Huntsman%20Spray%20Polyurea%20Booklet[1].pdf

8/14/2019 Huntsman%20Spray%20Polyurea%20Booklet[1].pdf

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Section 1Over a decade ago, the concept of polyurea sprayelastomer technology was introduced by chemistsat Texaco Chemical Company (now HuntsmanCorporation) in Austin, Texas. This new applicationwas based upon the reaction of an isocyanatecomponent with an amine blend to produce apolyurea elastomer system. Since this seminal work,a number of advances in both the chemistry andapplication equipment for polyurea have enabledpolyurea elastomer coatings to complete (and oftentimes displace) their traditional counterpart in thecommercial arena. Recent legislation regarding volatileorganic compounds (VOC) in coatings has furtherheightened market interest in polyurea coatings. Thisinformation packet is assembled to provide the coatingsexpert, and novice alike, with background, starting-point formulation, and application information forthese unique polymer systems.

The ConceptThe catalyst-free isocyanate/amine reaction is nor-mally quite rapid, proceeding to completion withina few seconds. Working times (gel times) generallyfall within the sub-five second range, thus requiringspecialized mixing and application equipment.Two-component spray equipment equipped withimpingement mixing has proven efficient andentirely adequate for sufficient blending and rapiddispensing of the polyurea raw materials. It is chieflythis equipment that allows polyurea technology to

venture outside of the realm of Reaction Injection

Molding (RIM).

DefinitionA polyurea coating/elastomer is derived from areaction of an isocyante component and a resinblend component. The isocyanate can be aromaticor aliphatic in composition. It can be a monomer,polymer, or any variant reaction of isocyanates,quasi-prepolymers, or a prepolymer. The prepolymer,or quasi-prepolymer can be made of an amine-terminated polymer resin, or hydroxyl-terminatedpolymer resin. The resin blend must be made up

of amine-terminated polymer resins, and/or amineterminated chain extenders. The amine-terminatedpolymer resins will not have any intentional hydroxylmoieties. Any hydroxyls are the resultant fromincomplete conversion to the amine-terminatedpolymer resin.The resin blend may also containadditives, or non-primary components. These addi-tives may contain hydroxyls, such as pre-dispersedpigments in a polyol carrier.

For clarification purposes, a polyurethane/polyurehybrid is a reaction with an isocyanate and a resinblend. The resin blend will contain an amine-terminatepolymer resin and a hydroxyl containing polyol. Itmay, or may not contain catalysts.

TechnologyPolyurea spray elastomers can be formulated fromingredients which produce either conventional orlight-stable products. Conventional polyureas use

JEFFAMINE polyetheramines with aromaticisocyanates and chain extenders, and therefore widevelop the characteristic amber or yellow colorwhen exposed to sunlight. However, unlike withpolyurethanes, no chalking or cracking is observedin polyureas. Pigmentation, usually with carbonblack, improves the resistance to discoloration anmasks its effects.

In contrast, polyurea spray elastomers based on

JEFFAMINE

polyetheramines, aliphaticisocyanates and amine chain extenders are light-stable and do not change color or chalk in sunlight

As would be expected, light-stable polyureas aremore expensive than those based on conventionalproducts, due to higher costs of raw materials.

The Polyurea AdvantagePolyurea elastomer coatings offer many advantageover their traditional counterparts (i.e. polyurethanepolyurethaneurea hybrids). The following highligha number of polyureas advantageous attributes.

1. Fast cure. Polyurea can be sprayed on sloped(and even vertical) surfaces without drip or runformation. Foot traffic can resume on coatingsapplied to horizontal surfaces within 30 second

2. Water insensitivity. Relative moisture and tem-perature insensitivity during application. Littleeffect is encountered with adhesion or coatingperformance due to weather variations (i.e. highumidity, temperature, and residual moisture).

3. 100% Solids. Two-component, one-coat systemcan be sprayed or poured at a 1:1 volume ratioEliminates the need for multi-coat applicationsIt is environmentally friendly.

4. Excellent physical properties. Including tensilestrength, tear strength, and elongation. (SeeTable I page 6).

5. Thermal stability. Stable up to 350F.

6. Pigment compatible. Colorants can be added tchange appearance and light-stability.

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7. Formulation flexibility. Can be formulated into productsranging from soft to hard elastomers.

8. Reinforcible. Reinforcement fibers can be incorporatedduring application.

9. Adaptable. Can be applied by a number of ways suchas sprayed or poured.

Sprayed polyurea elastomers have exhibited excellentadhesion to clean substrates such as concrete, wood,asphalt and fresh blasted steel. However, as with otherrapid cure coatings, the rapid cure of polyurea systemscan sometimes limit surface wetting and penetration ofsubstrate surfaces for mechanical bonding. For thisreason the end users are cautioned to test the adhesionof the sprayed elastomer films on target substrates toassess bonding of the coating. In certain cases surface

primers and adhesion promoters may be necessary. Inaddition, because the polyurea film exhibits such robustphysical properties and remains intact as it is pulledfrom the substrate's surface, greater adhesion may benecessary for specific applications.

Basic ChemistryPolyurea systems have been defined to be the reaction ofan isocyanate or isocyanate pre-polymer with a resin blendthat consists of amine functional species. The syntheticscheme for a simple polyurea is depicted in the figure below.

A key advantage of polyurea spray coatings is that theamine/isocyanate reaction is very fast, predictable, andconsistent. In contrast, polyurethane elastomers requirehigh levels of catalyst packages which can cause degregationof the elastomer and usually possess tight processingparameters regarding temperature and humidity ranges.The following figure offers a structural comparison ofgeneric polyurethanes and polyureas.

While polyols are often utilized in the construction ofisocyanate pre-polymers used in polyurea spray systems,these specialty pre-polymers, such a Huntsman's line ofRUBINATE isocyanates, are produced without thecatalysts that are usually required to promote the reactionof isocyanates and polyols. Polyols are not to be addedinto the amine resin blend, if the elastomer is consideredto be a true polyurea, but polymer systems that doincorporate polyols into the resin blend are commonly

referred to as hybrid systems. The term hybrid refers tothe presence of both polyurea and polyurethane linkageswithin the system, and it should be noted that manytimes these materials do not offer the same performanceor processing profiles as true polyureas.

Typically, aromatic isocyanates are reacted withJEFFAMINE amines and diethyltoluene diamine (DETDA).The isocyanate component functions as the systems rigidhard block while the JEFFAMINE amine segmentsare commonly referred to as the systems soft block.These specialty amines generally possess soft, flexible

polyoxypropylene backbones that significantly contributeto the hydrophobic/waterproof nature of the respectivepolyurea coatings. These alternating hard block/soft blockpolymer units are linked by DETDA, which is commonlyreferred to as the chain extender of the system.

OCN R NCO + HO R' OHcatalyst

( O C(O)NH R NH C(O)O R' )nPOLYURETHANE

OCN R NCO + H2N R' NH2

( NH C(O)NH R NH C(O)NH R' )nPOLYUREA

P' R'

H2N NH2

R + OCN R" NCO

AMINE ISOCYANATEAliphatic or Aromatic Aliphatic or Aromatic

P' R'

( NH NH NH NH R" )n

R

POLYUREA

O O

Formosa wharf pilings.


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Spray EquipmentProcessing of spray polyurea coatings requiresspecialized, high pressure/high temperature,impingement mix equipment. The capability ofheating the components prior to mixing is a keyattribute of the spray equipment, as it was foundthat heating of the materials prior to spray wasnecessary to reduce system viscosity (i.e. the A(isocyanate) and B (amine resin blend) components).

Viscosity reduction improves the mix, flow, andleveling of the applied material and leads to significantimprovements in the performance and appearanceof the coating.

To ensure proper mixing, we have found that theuse of a high-pressure proportioner and a spray orpour gun are essential. In our laboratories we havehad excellent results with the following commerciallyavailable equipment from Gusmer Corporation.

Gusmer Model H-3500 or MARKSMAN highpressure proportioner.

Gusmer Model GX7 high-pressure spray gun.Gusmer Model AR-C high-pressure pour gun.

System output: 5 lb/min to 30 lb/min

Other Available Equipment IsSupplied By Glas-CraftGlas-Craft Super Maxi or MH Dispensing

Systems.Glas-Craft Model Probler Dispensing Gun.

Equipment Processing parameters:Hydraulic pressure 400-550 psiSystem pressure 2000-3000 psiComponent temperature (at spray head)B-component 140-165F

A-component 140-165F

1. The isocyanate index (NCO/reactive amine)should be maintained at 1.05/1.00.

2. Unless variable ratio equipment is used, the ratioof the A-component to the B-component must bemaintained at 1.0/1.0 by volume, which is usually1.1 to 1.2/1.0 by weight

Application AreasThe mere concept of instant, high-performancecoatings has peaked the interest of many that possessan entrepreneurial spirit, as well as those with vividimaginations. In the infancy of this new polyureatechnology, spray applications of structures and objects,too numerous to fully inventory, were attempted.

As already mentioned, the reaction of the isocyanacomponent with the amine blend is generally a verapid, predictable reaction. The fast reactivity allowfor rapid return to service for coating application wor

The current polyurea technology allows for thepreparation of both aromatic and aliphatic (lightstable) elastomer systems. By selection of theappropriate isocyanate component and amine blenda variety of system reactivities are possible. In facslower systems can be utilized for a variety ofsealant/caulk-type applications.

Given these attributes, polyurea elastomer systemare well-suited for a myriad of application areasincluding: pipeline coatings, secondary containmensynthetic stucco coatings, concrete coatings, railccoatings, foam and EPS coatings, tank linings, paproduction, truck-bed liners, various waterproofinapplications, and floor joint/seam sealants. In additio

to these uses, polyurea continues to be evaluatedfor use in numerous niche applications that requihigh performance coatings with near immediatereturn to service.

Section 2 Raw MaterialsPolyurea elastomer systems are based upon formulatiothat can be finely tuned for an application. Just asin a complex cooking recipe, a number of chemic

ingredients (raw materials) are incorporated intothis two-component system. It is not uncommon utilize five or ten function-specific additives inaddition to the isocyanate component and amineblend. Below is a brief summary of the types ofreagents that are commonly incorporated into polyurformulations. In Section 3, entitled Polyurea PhysicaProperties, specific admixtures are presented andthe impact of their varying constitutions upon coatiperformance and properties discussed.

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A coating on marine pilings


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Amine Compounds(B Components)The amine blends used in the application of polyureaelastomer systems are often referred to as theB-component(or resin blend). As mentioned in SectionI, the B-components multi-functional, amine terminated-polyethers and chain extenders are used in conjunctionwith the quasi-isocyanate prepolymers comprising the

A-component to form the polyurea backbone.

At the heart of the B-component mixture are HuntsmanCorporations JEFFAMINE amines. These compoundsare amine-terminated ethylene oxide and propyleneoxide-based polyethers exhibiting molecular weights from~200-5000 g/mole. Suitable JEFFAMINE products forpolyurea elastomer technology include:

Resin componentsviscosities range from about 800 to1100 cps (800 to 1000 mPa.s) at room temperature

(77F, 25C) and 140 to 170 cps (140 to 170 mPa.s) at150F (65C).

The JEFFAMINE polyetheramines are based upon theirbackbone and structure type, which are largely responsiblefor the low moisture vapor transmission rates in thecorresponding polyurea systems. The primary amine groupsin these molecules react rapidly and consistently with theisocyanate components, obviating the need for catalysts.

Isocyanate Component(A-Component)The isocyanate component is a soft block quasi-prepolymerbased on commercially available isocyanates, such asMDI for aromatic systems and IPDI for aliphatic systems.

Viscosities of the isocyanate quasi-prepolymer componentsvary with the formulations employed and are typicallyunder 3000 cps (3000 mPa.s) at room temperature(77 F, 25C) and under 500 cps (500 mPa.s) at normalprocessing temperatures of 150F (65C).

Approx. Approx.Product Molecular Functionality

Weight Amine Group

JEFFAMINET-5000 5000 3

JEFFAMINED-2000 2000 2

JEFFAMINET-403 400 3



9009

9257

9258

9259

9272

9433

9480

9483

9484

9485

IsocyanatesPolyurea Prepolymer

High Functionality

High 2,4' Polymeric

Water-Emulsifiable MDI

Moisture Cure Prepolymer

High 2,4' Liquid Pure

Polyurea Prepolymer

Polyurea Prepolymer

Polyurea Prepolymer

High 2,4' Polymeric

Description2.1

2.9

2.3

2.7

2.0

2.01

2.0

2.0

2.0

2.6

Fn16.0 262 1000

30.2

31.8

29.5

8.0

31.9

5.5

15.0

16.0

31.2

%NCO

139

132

142

525

132

271

280

262

135

Eq. Wt.

900

40

275

3000

18

600

300

300

130

Viscosity eps @25C

Rubinate Specialty Isocyanates

Concrete-secondary containment


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Chain ExtendersA second set of amines reagents, referred to aschain extenders, play a key role in both processingtime and the ultimate properties of the respectivecoatings. As with isocyanate components, chainextenders can be either aliphatic or aromatic innature. Aliphatic species are utilized in applica-tions where light stability is a high priority;however, these chain extenders are significantlymore expensive. Listed are common chain

extenders used in polyurea elastomer systems:

Other AdditivesThe B-component mixture can contain a host ofother additives that serve a variety of functions inthe ultimate polyurea elastomer system. Whennecessitated by certain difficult substrates, siloxane-based adhesion promoters can be utilized. Forapplications where a rough morphology is desired(e.g. truck-bed liners), texturing agents such as washed

sand or calcium sulfonate can be incorporated. Focaulk applications a thixotrope, such as fumed silicis required to maintain dispersion of the otherB-components. A variety of UV-stabilizers and antoxidants from Ciba, Cytec and Clariant are alsoformulated into coatings by addition to the B-component side. Polyurea elastomer technology is alsoamenable to the use of colorants. Two commonly

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Table 1. Isocyanate Analysis In Polyurea Spray Application

Isocyanates A B C DRUBINATE9009 100

RUBINATE9480 100

RUBINATE9483 100

RUBINATE9484 100

NCO, % 16 15.5 15 16

Resin Blend

JEFFAMINED-2000 54.8

JEFFAMINET-5000 9.6

EthacureTM100 25.4

TiO2 10.2

Silane A-187 0.9

Physical Properties

Gel time, sec 1.5 5.0 6.5 4.5

Tack free time, sec 6.5 8.0 9.0 7.5

Tensile strength, psi 2287 2876 2492 3113

Elongation, % 241 519 518 514

Tear strength, pli 357 485 476 508

Shore D hardness (0sec/10sec) 46/39 47/40 43/36 50/43

Modulus, 100% 1477 1230 1172 1400

Modulus, 300% 1896 1713 2115

Chain Extender Manufacturer Type

ETHACURE100 Albermarle Aromat

ETHACURE300 Albermarle Aromat

UNILINK4200 UOP LLC Aromat

CLEARLINK1000 UOP LLC Aliphat

Isophoronediamine(IPDA) Various Aliphat


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encountered pigments are titanium dioxide and carbonblack, with the latter being capable of masking themajority of effects caused by UV-exposure. A number ofJEFFAMINEpolyetheramine-based pigments dispersionsare offered through Day-Glo Corporation, which ultimatelyafford a wide array of possible coating colors.

The adhesion promotor utilized in our researchdevelopments has been the Silane A-187, manufacturedby OSi Specialties.

Polyurea System AvailabilityHuntsman Corporation manufactures andsells the family of JEFFAMINE poly-etheramines and isocyanates that are the keyingredients in polyureas.These JEFFAMINE

polyetheramine products are supplied toqualified formulators who blend, evaluate andsell polyurea systems to applicators and endusers. A list of system formulators who can

supply applicators with blended polyurea spraysystems is available from HuntsmanCorporation. These formulators will also supplythe technical service support and work withtheir applicator customers to supply materialsthat are designed to meet the specific needsof those applications. Huntsman Chemicalalso supplies isocyanates utilized in polyureasformulations, through the HuntsmanPolyurethane group.

Section 3Polyurea Physical Properties

A wide range of final polyurea products are possible,ranging from soft rubbers to hard elastomers. The tablesbelow are intended to illustrate the versatility of polyureaelastomers that are possible from this technology. It isstrongly recommended to polyurea applicators andcustomers to thoroughly evaluate polyureas, prior tocommercial application, to insure material suitability inthe intended service. No warranties are intended or impliedby Huntsman Corporation.

Hard Elastomers For Spray

MDI Based Prepolymer E F G H% NCO 15.4 17.9 19.6 20.4

Resin Blend

JEFFAMINED-2000 57.45 40.00 33.50 22.00

JEFFAMINED-400 16.00 20.00 26.00

JEFFAMINET-5000 10.64 10.00 10.00 10.00

ETHACURE100 21.28 19.00 21.50 27.00

UNILINK4200 10.64 15.00 15.00 15.00

Processing

Index 1.10 1.10 1.10 1.10

Iso/Resin volume ration 1.00 1.00 1.00 1.00

Iso/Resin weight ration 1.12 1.15 1.16 1.17

Physical Property

Gel Time (s) 5.5 4.5 3.5 2.5

Tack-Free Time (s) 10.0 9.5 6.5 4.0

Hardness (0 s) D51 D55 D61 D70

(10 s) D42 D47 D52 D61

Tensile Strength (psi) 2662 3084 2772 3522

Elongation (%) 532 472 268 73

Modulus (100%) 1173 1383 1946

Modulus (300%) 1753 2112

Load (psi) 19.3 23.7 30.5 39.0

Tear Strength (pli) 482 461 541 716

Synthetic stucco coatings using polyureasprays are commercially available now.

(EPS, polyurethane board etc.)


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Softer/Caulk Formulations

Chemical Resistance Testing ForPolyurea Spray ElastomersPolyurea spray elastomer systems are 100% solids,two-component spray systems which have extremelyfast reactivities and cure times. This technology issimilar to the high-performance polyurethane systems

currently used, except for several key points. In thepolyurea spray technology, JEFFAMINE poly-oxyalkylene diamines and triamines have replacedthe polyols, amine chain extenders are utilized, andcatalysts have been eliminated.

Spray elastomer systems based on this polyureatechnology are good candidates for both coating annon-coating-type applications. In either applicatiocase, the chemical resistance of the coating matericould be of major importance.

There are many factors, which affect the chemicaresistance of elastomer systems. These include:

Application design.

Elastomer system formulation.

Service and exposure temperature.

Type and amount of impurities, thatcould be present in the chemicaland/or environment.

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Soft Elastomers For Spray

MDI Based Prepolymer A B C D

% NCO 10.5 11.7 12.9 13.9

Resin Blend

JEFFAMINED-2000 70.11 66.45 63.83 61.5

JEFFAMINE

D-400 JEFFAMINET-5000 10.54 11.07 10.64 10.6

ETHACURE100 9.33 12.51 15.32 17.8

UNILINK4200 10.02 9.97 10.21 9.99

Processing

Index 1.10 1.10 1.10 1.10

Iso/Resin volume ration 1.00 1.00 1.00 1.00

Iso/Resin weight ration 1.09 1.10 1.10 1.1

Physical Property Gel Time (s) 20.0 13.5 8.0 6.5

Tack-Free Time (s) 120.0 30.0 25.0 13.5

Hardness (0 s) A56 A67 A76/D36 A85/D

(10 s) A49 A61 A69/D27 A79/D

Tensile Strength (psi) 1146 1426 2520 227

Elongation (%) 1063 998 1014 803

Modulus (100%) 254 365 538 683

Modulus (300%) 482 624 892 105

Load (psi) 9.8 17.7 13.3 15.

Tear Strength (pli) 220 270 329 364

Aromatic Polyurea Sealant SystemsThree Minute Gel-Time Target

Dual Syringe, Static Mix Applied

1 2 3

Isocyanate Component

Rubinate 9480 100 100 100

JEFFSOLPC

Amine Resin Blend

JEFFAMINED-2000 50 51 41

JEFFAMINET-5000 10 11 19

UNILINK4200 37 33 37

CABOSIL M-5

Index 1.30 1.30 1.30

ISO/resin vol ration 1:1 1:1 1:1

Physical Properties/Performance Characteristics

Three Minute Gel Time Target

1 2 3Gel Time 4 min 2 min 3 min

Tensile Strength (psi) 1297 1910 1564

Tear Strength (pli) 363 414 408

Percent Elongation 546 650 552

Shore D Hardness 42 / 30 41 / 32 42 / 32

Modulus, 100% (psi) 547 717 682

Modulus, 300% (psi) 841 1068 1017


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Table 2. describes the chemical resistance of polyureapolymers. The polyurea systems utilized, are standardspray elastomer systems, including both aromatic andaliphatic based elastomers. It is believed that these systemsgive a good representation of each particular typetechnology. For testing purposes, both ASTM D1308and ASTM D3912 methods were utilized. These testswere performed at 25C with visual obser-vations being noted at the end of the testprocedures. Because of the simplicity ofthese tests and due to the factors listedabove, which are beyond the control ofHuntsman Corporation, no guaranteeor warranty concerning the use of theseelastomer systems is either intended orimplied, thus the chemical resistanceshould be determined on actual polyureaelastomers that are to be used. These testresults are reported to serve as a guide tothe applicability of polyurea spray elas-

tomers in a variety of applications. It isthe responsibility of each system supplierand/or end user to assess the suitabilityof polyurea spray elastomers for specificapplications.

ASTM D 1308: Effect OfHousehold Chemicals OnClear And PigmentedOrganic FinishesThis test describes the spot testor watchglassmethod to simulate exposure of the

coating through possible spillage. Each

chemical was in contact with the elastomer system for aperiod of seven days, except where noted. Visual obser-

vations were made on the elastomer daily and additionalchemical was added as needed. The tested area was cov-ered with a watch glass to inhibit evaporation and/or con-tamination of the chemicals. Chemicals used as well asresults can be found in Table 2.

Table 2 Chemical Resistance ASTM D 3912CHEMICAL 12-MONTH EXPOSURE

Methanol Swelling, < 48 hrs

Gasoline Slight surface change, no hardness loss

Diesel fuel No visible damage

Toluene Swelling, < 24 hrs

MTBE Slight surface change

5% MTBE/Gasoline Slight surface change

Motor Oil Slight surface change, no hardness lossHydraulic Fluid Slight surface change, no hardness loss

2-Methylbutane No visible damage

Water/Room temperature No visible damage

Water/82C, 14 days No visible damage

10% NaCl/Water/Room temp No visible damage

10% NaCl/Water/50C, 14 days No visible damage

10% Sugar/Water No visible damage

Sulfuric Acid/5% No visible damageSulfuric Acid/10% No visible damage

Hydrochloric Acid/5% No visible damage

Hydrochloric Acid/10% No visible damage

Phosphoric Acid/10% No visible damage

Ammonium Hydroxide/10% No visible damage

Ammonium Hydroxide/20% No visible damage

Sodium Hydroxide/10% No visible damage

Sodium Hydroxide/20% No visible damageSodium Hydroxide/50% Slight surface discolor, no hardness loss

Sodium Hydroxide/1%, 50C, 14 days Slight surface discolor, no hardness loss

Potassium Hydroxide/10% No visible damage

Potassium Hydroxide/20% Slight surface discolor, no hardness loss

Acetic Acid/10% No visible damageTruck bed liners; a large after marketapplication using polyurea coatings


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In addition to the Chemical Resistance chart abovechart, we have included a comparative Polymer guide(Table 3) to familiarize customers with the relativeperformance ranking of the polyurea chemistry withother available polymer systems. The informationdescribed here along with Table 2 can render ageneral guide of the chemical and performancebenefits of polyureas.

Health And SafetyPotential health and safety hazards associated withthe spray application described in this bulletin mayarise from both the toxicological properties of thechemical components and from the mechanicalaspects of the high pressure equipment involved.

Before undertaking any spray work, the applicatorshould be thoroughly familiarize themselves with thesafe operation of the equipment and should followall instructions and safety precautions provided bythe manufacturer of the equipment. Particular careshould be taken that the spray nozzle is neverdirected toward ones face or body or other workersduring operation.

Under normal equipment operating conditions, theIsocyanate Component and the Resin Componentof the polyurea spray system react almost instanta-neously so that there is not an excess of eitherisocyanate or amine exiting from the spray nozzle.However, even under ideal operating conditions, versmall amounts of unreacted MDI (4, 4-diphenylmethane diisocyanate), or IPDI (isophorone

10

Table 3 Comparative Polymer Performance

Performance Type Polyurea Polyurethane Polyester Epoxy Vinyl Ester Acrylic PolysulfidPhysical strength Low-High Low-Mid High High High Mid-High Low-Mid

Elongation High High Low Low Low Low-Mid High

Impact resistance High Mid-High Mid Mid Mid Mid-High Mid-High

Abrasion resistance High Mid-High Mid-High Mid-High Mid-High Mid-High Mid

Adhesion to concrete Low-High Low-Mid Mid High Mid Low-Mid Low-Mid

Cure shrinkage Low Low High Low High High Low

Permeability Low Mid-High Low Low Low Low-Mid Mid-HighUV Resistance Mid-High Low-High Mid-High Low Mid High High

Creep Low High Low-Mid Low-Mid Low-Mid Low-Mid High

Temperature Limit Low-High Mid Low-Mid Mid-High Mid-High Mid Low-Mid

Chemical Resistance

Mineral acids Low-Mid Low-Mid Mid-High Mid-High Mid-High Mid Low-Mid

Organic acids Mid Low-Mid High Mid High Mid Low-Mid

Alkalis Mid-High Low-Mid Mid High High High Low-Mid

Chlorinated solvents Low-Mid Low-Mid Low-Mid Low-Mid Mid-High Low-Mid Low-Mid

Oxygenated solvents Low-Mid Low-Mid Low-High Low-High Mid-High Low-High Low-MidHydrocarbon solvents Low-Mid Low-Mid Mid-High Mid-High Mid-High Low-High Low-Mid

Salts High Mid-High High High High High Mid-High

Water High Low-High Mid-High Mid-High Mid-High Mid-High Low-High

Successful rail car coatings (5 years to date)


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diisocyanate) depending on the formulation of theIsocyanate Component, or DETDA (diethyltoluenediamine) or IPDA (isophorone diamine), depending onthe formulation of the Resin Component, may be presentas an aerosol or vapor.

Exposure to MDI or IPDI aerosol or vapors from theIsocyanate Component may result in irritation of theeyes and respiratory tract. Repeated inhalation of MDIaerosol or vapor may produce a hypersensitivity reactionof the respiratory tract similar to an asthma-like response.Individuals with preexisting asthmatic conditions, orwho have been previously sensitized to isocyanates mayrespond to very low concentration isocyanate exposures.

Dermal contact with the Isocyanate Components mayresult in dermal irritation. However, repeated dermalcontact may result in a delayed-contact hypersensitivityreaction (rash). In addition, cross sensitizationreactions(sensitization to more than one isocyanate from exposure

to a single isocyanate) have been demonstrated for anumber of isocyanates, including IPDI and TDI (toluenediisocyanate).

Exposure to DETDA or IPDA aerosol or vapors from theResin Component may result in moderate to severe irritationof the eyes and respiratory tract. Dermal contact withDETDA may result in moderate to severe dermal irritation.IPDA is considered to be corrosive to eyes and skin.Repeated dermal contact with DETDA may result in adelayed-contacthypersensitivity

reaction (rash).

Chronic (two year)feeding studies in ratsusing DETDA haveresulted in causedchanges in the pancreas,liver, thyroid and eyes.An increase in thenumber of male ratswith liver and thyroidtumors and female rats

with liver and mammarygland tumors was alsoobserved. The No EffectLevel (NOEL) for organtoxicity (other than livereffects), and for liverand thyroid tumors was35 ppm. The NOEL formammary gland tumors

was 10 ppm. Due to study design, a NOEL could not beestablished for chronic liver toxicity.

Prior to handling or using any component of a polyureaspray system or engaging in polyurea spray work, themanufacturers Material Safety Data Sheet (MSDS) forboth the Isocyanate Component and the Resin Componentshould be reviewed for their recommendations forappropriate respiratory and dermal protection measureswhen handling, using or spraying their products.

Although workplace exposure limits have not beenestablished for DETDA and IPDA, the American Conferenceof Governmental Industrial Hygienists (ACGIH) hasestablished a threshold limit value (TLV) of 0.005 ppmfor MDI and IPDI.

To minimize any risk due to exposure to the chemicalsused or the particulate matter created in polyurea sprayapplications, spraying should be done only in a well-ven-

tilated location (either outdoors or by use of mechanicalfans), or in a properly ventilated spray booth. Applicatorsshould wear, as minimum respiratory protection, ahalf-face mask respirator. In areas with poor ventilation,or where oxygen supply is threatened, supplied air breathingequipment must be worn. In addition, protective gloves,coveralls, and safety glasses should be worn.

Architectural coatings (commercial amusement parks, trade shows, movie set back drops etc.)


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Tel: 713-235-6000Fax: 713-235-6977

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Customer ServiceRepresentatives

Tel: 800-231-3104

Tel: 800-624-6417

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#14-05/08 Gateway WestSingapore 189720Tel: 65-390-0370Fax: 65-296-3368

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Tel: 886-2-8596-1919Fax: 886-2-2586-3467

Huntsman do BrasilRua Andre de Leao, 21004762-030Sao PauloSPBrazilTel: 55-11-5696-9312Fax: 55-11-5521-9953

Huntsman CorporationCanada Inc.256 Victoria Road SouthGuelph, Ontario N1E 5R1 Canada

Tel: 519-824-3280Fax: 519-824-0755

Huntsman de Mexico,S.A. de C.V.

Angel Urraza Num. 303Col. Insurgentes San BorjaC.P. 03100 Mexico, D.F.Tel: 525-687-2558Tel: 525-687-7551Fax: 525-687-0991

Emergency AssistanceFor transportation emergenciesonly, call CHEMTREC800-424-9300.

For all other emergencies, call409-722-8381, our 24-houremergency number in Port Neches,Texas.

For More Literature Or InformationPlease Call The Nearest Huntsman Corporation Office.

2001 Huntsman CorporationWarning: Polyurea products manufactured from these chemicals may present a fire hazard if improperly used. Each manufacturer or user of such products should determinewhether there is potential hazard in a specific application and take the necessary precautions.Huntsman Corporation warrants only that its products meet the specifications stated herein. Typical properties, where stated, are to be considered as representative of currentproduction and should not be treated as specifications. While all the information presented in this document is believed to be reliable and to represent the best available dataon these products, NO GUARANTEE, WARRANTY , OR REPRESENTATION IS MADE, INTENDED, OR IMPLIED AS TO THE CORRECTNESS OR SUFFICIENCYOF ANY INFORMATION, OR AS TO THE SUITABILITY OF ANY CHEMICAL COMPOUNDS FOR ANY PARTICULAR USE, OR THAT ANY CHEMICAL COM-

POUNDS OR USE THEREOF ARE NOT SUBJECT TO A CLAIM BY A THIRD PARTY FOR INFRINGEMENT OF ANY PATENT OR OTHER INTELLECTUAL PROP-ERTY RIGHT. EACH USER SHOULD CONDUCT A SUFFICIENT INVESTIGATION TO ESTABLISH THE SUITABILITY OF ANY PRODUCT FOR ITS INTENDEDUSE. Products may be toxic and require special precaution in handling. For all products listed, user should obtain detailed information on toxicity, together with proper ship-ping, handling, and storage procedures, and comply with all applicable safety and environmental standards.

Main Offices: Huntsman Corporation / P.O. Box 27707 / Houston, Texas 77227-7707 / 713-235-6000

Technical Services Section: P.O. Box 15730 / Austin, Texas 78761 / 512-459-6543

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