BASF - PVP and More_2009_Brochure

7/31/2019 BASF - PVP and More_2009_Brochure

1/20

www.luvitec.com

PVP and more ...

LUVITEC, LUVICROSS

and COLLACRALVAL

Versatile specialty polymersfor technical applications.

A broader base for your success


2/20

2 | PVP and more ... | LUVITEC, LUVICROSS and COLLACRALVAL

Soluble in many systems

Hygroscopic

Film formation

Adhesion

Initial tack

Complex formation

Dispersing

Stabilization

Solubilization

Crosslinkability

Stable in a wide pH range

Biological compatibility

Toxicologically safe

Binding

Polyvinylpyrrolidone (PVP) is a polymer with wide ranging properties such as:


3/20


It was in late 1930s' that Professor Walter Reppe of BASF first

invented and patented the polymer, PVP. In the more then 70 years

since that significant milestone, we have been continuously

advancing its development to further its applications.

Originally used as a plasma substitute, PVP was introduced to a

wide variety of applications in pharmacy, cosmetics and industrial

production.

BASF's PVP homo- and copolymers are known under the

following brand names for technical applications

LUVITEC,

LUVICROSS,

and

COLLACRALVAL

It has always been our philosophy to provide customers with

solutions to their problems. We view our success as the ability

to bring you specific answers to your problems with our PVP

solutions.

We strongly believe in and welcome mutual collaboration with

you to come together and jointly conceptualize new solutions

with PVP. We hope this brochure is the start of this process.

Foreword

PVP has many unique performance features, enabling its continued

development into many new and different applications. More obvious

examples include agricultural, adhesive, electronic, membrane and

metal quenching.


4/20


Contents

1. Selected examples and possible uses

in technical applications

1.1 LUVITEC vinylpyrrolidone homo- and copolymers 5

1.2 LUVICROSS crosslinked vinylpyrrolidone homopolymer 7

1.3 COLLACRALVAL special hydrophobic modified

vinylpyrrolidone/vinylacetate copolymer 7

2. LUVITEC

2.1 Vinylpyrrolidone homopolymers LUVITEC K-grades 8

2.1.1 Product range 9

2.1.2 Typical product properties 10

2.2 Vinylpyrrolidone copolymers LUVITEC and

COLLACRALVAL 13

2.2.1 Product range 14

2.2.2 Product description 15

2.3 Comparison between homo- and copolymers 17

3. LUVICROSS

3.1 Product range and description 18

3.2 Typical product properties 19


5/20


Field of application Advantages/function of the polymer

1. Selected examples and possible uses

in technical applications1.1 LUVITEC vinylpyrrolidone homo- and copolymers

Adhesives

Glue sticks Provides high degree of initial tack, outstanding adhesion and bonding to paper.

Hot-melt adhesives Good adhesion, especially to glass, metal, paper and plastic surfaces (e.g. PP, PE, PET);

particularly suited to the production of remoistenable or water-soluble adhesives.

Skin adhesives Viscosity modification, toxicological ly safe, ready crosslinking and formation of hydrogels

important properties in the production of flexible, skin-adhesive gels that adhere well.

Agriculture

Seed coating and treatment High performance film forming adhesives in combination with the compatibility to active

ingredients like insecticides and fungicides. Polymer coating prevents damage from frost,

promotes germination and provides improved protection against attack by fungus and mold.

Seed pelletizing Binder of granules and pellets for improved durabil ity and the ability of the seed to be sown

including dust reduction.

Crop protection Improved adhesion of the active ingredients to the plant. Stabilization of active ingredients,

solubilization and dispersion.

Fertilizer Binder in granulated form and dispersant of ingredients, for example dye to achieve a

homogenous colored coating; reduction of dust.

Ceramics Good adhesion, binding and compatibility with raw materials in combination with complete

combustion to improve binding, glaze and color fixation in ceramics.

Coatings and Inks

Dispersions and paints Use as protective colloid/dispersant and for viscosity modification.

Catheter coating Exploitation of the hygroscopicity and crosslinkability of VP polymers for the production

of catheter coatings having a low coefficient of friction.

Antifogging coating, Good film formation and adhesion properties as well as crosslinkability for the

(e. g. ski and diver goggles, production of colorless, transparent coatings having antifogging properties on glass,

and cockpit windows) polycarbonate and polymethyl methacrylate surfaces.

Inks Dispersants, improve ink flow and adhesion of the ink to nonporous surfaces.

Electrical/electronic

Screens Use as photoresist in the black matrix process (production of the graphite matrix) in

color screen tubes for improved picture contrast and image resolution.

Batteries Coating and binder in electrode manufacture.

(e. g. NiCd, NiH, Li ions)

Printed circuit boards Temporary or permanent coating of printed circuit boards. Fixation of and protective

colloid for noble metal suspensions (e.g. Pd).

Chemical Mechanical Polishing Additive for the production of CMP slurries.(CMP)


6/20



Membranes

Ultra- and microfiltration for: Adjust pore size and pore size distribution; increase membrane permeability;

- biomedical applications production of hydrophilic membrane by crosslinking; prevent fouling.

(e.g. dialysis) Main use in Polysul fone (PSU), Polyethersulfone (PES) and Polyvinylidene fluoride (PVDF)

- water purification membranes. High biocompatibility, especially with blood and toxicologically safe.

- waste water treatment

- food processing

(e.g. beer and wine filtration)

Metallurgy

Metal quenching baths Control of the cooling process and characteristic by adjusting viscosity.

Aqueous systems provide safer handling (no fire or fume risk) and easy disposal.

Paper

Coating of ink-jet paper The coating improves the absorption of printing ink by increasing the viscosity of the ink

on contact with paper; prevents ink from migrating and smearing.

Specialty paper Improves printability and gloss; use as dispersant and as binder for optical brighteners.

Photography

Photographic film/paper Control of grain growth and grain size distribution of silver halide crystals; prevent fogging;

immobilize optical brighteners or dyes; prevent diffusion into other layers of the film;

increase color luster and image contrast; binder in the halo prevention layer.

Developing solution As accelerator in developing solution.

Polymerization Emulsifier for emulsion polymerization; protective colloid for lattices; adjustment of the

rheological properties of lattices. Dispersion of pigments

Textiles + Fibers

Glass fibers Protective colloid and film-forming agent in sizing; prevents fiber splicing; auxiliary in

processing and weaving.

Plastic fibers Blended with plastic fibers to improve moisture transportation.

Textile fibers Auxiliary in the textile dyeing process; use as a textile surface finish.


7/20


1.2 LUVICROSS

crosslinked vinylpyrrolidone homopolymer


Polymer dispersions

Thickener Thickening agent for polymer dispersions and other water-based systems, especially

for mixtures with low filler load. Wide pH application range between 3 8, with optimal

thickening at a pH-value of 5. For adjustment of optimal flow and coating properties.

Protective colloid Manufacturing of resin dispersions and for mixing resin solutions into polymer dispersions.


Coatings

Ink-jet papers and films Fixing of pigments and other components of coating formulations as well as

adsorption of solvents for ink-jet papers and films.

Filter aid for technical applications Complexation of polar compounds, like dyes, polyphenols and nitro compounds.

Granules and tablets

Color pigments Accelerate the disintegration of granules in aqueous formulations and stabilize

the suspension obtained.Agrochemicals Accelerate the disintegration of granular formulations (disintegrant).

1.3 COLLACRALVAL special hydrophobic modified

vinylpyrrolidone/vinylacetate copolymer


8/20


2. LUVITEC

2.1 Vinylpyrrolidone homopolymers LUVITEC K-grades

Soluble in many systems

Hygroscopic

Film formation

Adhesion

Initial tack

Complex formation

Dispersing

PVP is a white, hygroscopic powder with a weak characteristic

odor. In contrast to most polymers, it is readily soluble in water and

a large number of organic solvents, such as alcohols, amines, acids,

chlorinated hydrocarbons, amides and lactams. On the other hand,

the polymer is insoluble in the common esters, ethers, hydrocarbons

and ketones.

PVP is markedly hygroscopic. This property combined with outstan-

ding film formation, initial tack and adhesion to different materials,

high capacity for complex formation, good stabilizing and solubilizingcapacity, insensitivity to pH changes, ready radiation-induced cross-

linkability as well as good biological compatibility have made PVP one

of the most frequently used specialty polymers.

PVP is synthesized by free-radical polymerization of N-vinylpyrrolidone

in water or alcohols with a suitable initiator. By selecting suitable

polymerization conditions, a wide range of molecular weights can be

obtained, extending from low values of a few thousand daltons to

approximately 2.2 million daltons.

O

Stabilization

Solubilization

Crosslinkability

Stable in a wide pH range

Biological compatibility

Toxicologically safe

Binding

LUVITEC K-grades Versatile polymers for technical applications


9/20


K-value* Solids pH-value Residual NVP Brookfield-RVT

content in %* (10% solution) * content in ppm* Viscosity 3

in mPas at 23 C*

BASF offers a wide range of vinylpyrrolidone

homopolymers with different molecular weights

(K-values) under the name LUVITEC K. The

products are available as a powder or as

aqueous solutions. Characteristic parameters

of all LUVITEC K-grades are listed in Table 1.

Details of the test methods and product

specifications are available on request.

High molecular weight PVP powders

LUVITEC K 80, K 85, K 90 and K 90 HM

are packed under an inert gas atmosphere

to maintain its molecular weight. This pack-

aging guarantees a storage stability of the

powder product in the original container at

room temperature for at least 3 years.

2.1.1 Product range

Table 1: Characteristic parameters for LUVITEC K-brands1 Packaging under an atmosphere of nitrogen2 Preserved3 Solid content in %/spindle/rpm

* all data in this publication are approx. values. It does not necessarily form part of the product

specification. A detailed product specification is available from our local BASF representative

LUVITEC K 17 15 19 95.0 100.0 3.0 7.0 100 80 180

powder (40/2/100)

LUVITEC K 30 27 33 95.0 100.0 3.0 7.0 100 80 140

powder (30/1/50)

LUVITEC K 801 74 82 95.0 100.0 5.0 8.0 100 2500 7000

powder (20/6/100)

LUVITEC K 851 84 88 95.0 100.0 5.0 9.0 100 5000 20000

powder (20/6/50)

LUVITEC K 901 88 92 95.0 100.0 5.0 9.0 100 10000 25000

powder (20/7/100)

LUVITEC K 90 HM1 92 96 95.0 100.0 5.0 9.0 100 15000 30000

powder (20/7/100)

LUVITEC K 30 27 33 29.0 31.0 4.0 8.0 100 80 140

solution approx. 30% (30/1/50)

LUVITEC K 60 52 62 34.0 36.0 7.0 9.0 300 2000 20000


LUVITEC K 85 CQ2 83 88 19.0 21.0 7.0 9.0 100 5000 15000


LUVITEC K 90 CQ 90 98 9.5 10.5 7.0 9.0 50 300 1500


LUVITEC K 90 90 98 19.0 21.0 7.0 9.0 100 10000 40000


LUVITEC K 115 CQ2 114 130 10.5 11.5 7.0 9.0 50 2000 5000



10/20


waterabsorptionin%

rel. humidity in %

90

80

70

60

50

40

30

20

10

025 50 1000 75

Ash

The ash content is determined by heating the sample to

800 C for 6 h. All LUVITEC K-grades show an ash con-

tent of 0.02%. Details of the method can be obtained

on request (Table 3).

Viscosity

The rise in viscosity with increasing concentration depends

essentially on the K-value. While in the case of the low mo-

lecular weight K 17 and K 30 grades, a 5 10% increasein concentration has only a slight effect on the viscosity,

changes by a factor of 5 or more can be found for the high

molecular weight products (Fig.1).

Molecular weight

The average molecular weight (Mw) of the LUVITEC

K-grades extends from a few thousand daltons to about

2.2 million daltons. The number-average molecular weight

(Mn) rises in parallel with this from around 2,000 daltons

to around 400,000 daltons. The weight average and thenumber average were determined by GPC analyses;

viscosityin

mPasat23C1000

Solids content in %

100

102 5 10

LUVITEC

K17

LUVITEC

K30

LUVITE

CK6

0

LUVIT

EC

K80LU

VITEC

K90LU

VITE

C

K90

K-value 97

K-value 90

K-value 80

K-value 55

K-value 30

K-value 17

K-value 116

LUVITE

C

K115

2.1.2 Typical product properties

Figure 1: Dependence of the viscosity on the solids content of aqueous

LUVITEC K-solutions; Brookfield RVT Viscometer, spindle 3,

100 rpm at room temperature

Figure 2: Moisture absorption of LUVITEC K-grades (film thickness: 2 mm)

at 23 C after saturation

calibration was done with narrowly distributed PVP

samples which had previously been characterized by

light scattering (Table 3).

Glass transition temperature

With the exception of LUVITEC K 17 powder, the glass

transition temperatures of LUVITEC K homopolymers

lie within a similar, relatively high temperature of 175

180 C (Table 3).

Particle size distribution

The particle size spectrum of the LUVITEC K powder

grades varies considerably since different drying proces-

ses are used to produce the powder (Table 3).

Color

The color is determined using aqueous solutions according

to the method of the European Pharmacopoeia. A guide

value lighter than BY5/B5/R6 applies to all LUVITEC

K-grades. Details of the method can be obtained on request

(Table 3).


11/20


Compatibility and Film Forming Properties

The outstanding compatibility of Polyvinylpyr-

rolidone with a huge number of compounds

like organic and inorganic salts, dyes, active

compounds, plasticizers, bacteria, blood

opens up a wide field of opportunity and ap-

plications for LUVITEC in different industries.

Polyvinylpyrrolidone films are clear, transparent,

hard and brittle.These properties can beselectively modified, for example, tack and

brittleness, by using plasticizers like: water,

glycerin, glycol, polyglycols, fatty acid

derivates, phthalates, Hexamoll, sorbitol,

cellulose derivates.

Hygroscopicity

The marked hygroscopicity of PVP is suffi-

ciently well known. Moisture absorption isalmost independent of the molecular weight.

The moisture content curve (Figure 2),

determined using a 2 mm PVP film, is

characteristic of all LUVITEC K-grades.

Acetic acid

1,4-Butanediol

Butanol

Butylamine

Chloroform

Cyclohexanol

Diethylene glycol

Dimethyl acetamide

Dimethyl sulfoxide

Ethanol

Ethylene diamine

Ethylene glycol

Formic acid

Glycerin

Isopropanol

Methanol

Methylene chloride

Methylcyclohexanone

N-Methylpyrrolidone

Poly(ethylene glycol) 400

Propanol

Propylene glycol

Pyrrolidone

Triethanolamine

Vinylpyrrolidone

Water

Acetone

Butane

Carbon tetrachloride

Chlorobenzene

Cyclohexane

Cyclohexanone

Diethyl ether

Dimethyl ether

Dioxane

Ethyl acetate

Hexane

Methyl acetate

Methyl ethyl ketone

Mineral oil

Petroleum ether

Propane

Tetrahydrofuran

Toluene

Xylene

Insoluble in

Table 2: Selected solvents for LUVITEC K-gradesDialysis Membrane Module based on LUVITEC/ULTRASON-

Hollow Fiber Membranes

One of the outstanding properties of PVP is its universal solubility both in

hydrophobic and in extremely hydrophilic solvents (Table 2). To produce so-

lutions of PVP from powder, it is advisable to add the powder to the solvent

in portions while stirring; in this way, formation of lumps of powder can be

avoided.

When using higher molecular weight PVPs and also when producing more

concentrated solutions, the rate of dissolution can be significantly increased

by raising the temperature to 50 C 60 C.

Soluble in

Solubility of PVP


12/20


Crosslinkability

High molecular weight LUVITEC K-grades (for example

LUVITEC K 90) can be crosslinked at elevated tempera-

ture (70 90 C) by adding small quantities of a peroxide

(for example tert.-butyl peroxipivalate, H2O2/CuCl2) or

persulfate in aqueous solution and under nitrogen. By

contrast, aqueous LUVITEC K 30 solutions can best be

crosslinked by raising the pH to 11 at elevated tempera-

ture (approximately 90 C) under nitrogen. PVP films can

be crosslinked even at room temperature by radiationcuring (electron beam, gamma or X-rays) using 0.5

10 megarads.

Crosslinking is also known with UV light in the presence

of a UV initiator (for example 4,4'-diazidostilbene-2,2'-

di-sodium sulfonate) at 350 380 nm and a light intensity

of 0.2 0.5 mW/cm2. When crosslinked, PVP becomes

insoluble in all solvents. In contrast to soluble PVP, cross-

linked PVP is capable of swelling only in polar solvents

(for example water or ethanol). The extent of swelling de-

pends on the crosslinking density. On account of its out-

standing adhesion and physiological compatibility, weaklycrosslinked PVP with a high water content (hydrogel) is

employed as a skin-adhesive gel.

Table 3: 1 LUVITEC K 90 powder * all data in this publication are approx. values. It does not necessarily form part of the product


Typical properties of the LUVITEC K-grades

LUVITEC K 17 K 30 K 60 K 80 K 85 K 90 K 90 HM K 115

Molecular weight (GPC):

Mw in kDa* 9 50 450 850 1100 14001 1800 2200

Mn in kDa* 2 14 140 200 250 3251 375 400

Ash content in %* 0.02

Rel. Viscosity 1.09 1.25 1.93 3.09 3.74 5.09 5.69 12.2

(1% in water, 23 C (5%: (0.1%:

capillary viscometer)* 1.53) 1.33)

Glass transition 110 175 175 180 180 180 180 180temperature in C (DSC)*

Particle size in m*

(Sympatec-Helos Rodos) only only

X10% 15 25 available 60 90 90 90 available

X50% 25 75 as 160 180 180 180 as

X90% 100 130 solution 320 350 350 350 solution

Color (10% solution, brighter than BY5/B5/R6

according to Europ.

Pharmacopoeia)*

Moisture absorption 20 (50 % rel. humidity, 23 C)

at saturation in %* 40 (75% rel. humidity, 23 C)


13/20


An attractive extension of the PVP product range

with specifically modified properties

By incorporating selected comonomers into the VP poly-

mer chain, specific properties of the VP homopolymers

(LUVITEC K-grades) can be modified. This opens up a

variety of possibilities for new applications. Such comono-

mers include vinylacetate (VA) and N-vinylcaprolactam

(VCAP).

Figure 3 illustrates the different properties copolymers

as compared to VP homopolymers.

2.2. Vinylpyrrolidone copolymers LUVITEC and COLLACRALVAL

Figure 3: Modified VP polymers: specific changes of product properties

LUVITECVA 64

PVP

LUVITECVPC 55 K65 W COLLACRAL

VAL

Reduced moisture

absorptionand tackiness

Improved

thickenerperformance

Reduced moistureabsorption and

improved meltingbehavior

Modified VP polymers


14/20


2.2.1Product range

Table 4: The LUVITEC copolymer and COLLACRALVAL product range:

an overview of characteristic parameters

* all data in this publication are approx. values. It does not necessarily form part of

the product specification. A detailed product specification is available from our

local BASF representative

LUVITEC

VA 64 W VA 64 P COLLACRAL

VAL VPC 55 K 65 W

Product characteristics VP/VA VP/VA VP/VA VP/VCAP

Comonomer content in %* 40 40 hydrophobic modified 50

Supplied as aqueous solution powder aqueous solution aqueous solution

Solids content in %* 49 51 95.0 29 31 29 31

K-value* 26 34 26 34 50 60 62 68

pH-value (10% in H2O)* 5.0 7.0 3.8 6.0 3.5 6.0 6.0 8.0

Gardner color scale (20% in H2O)* 3

Brookfield RVT 1000 3000 1000 3000 1500 2800 8000 20000

Viscosity in mPas at 23 C / (LVT 50%, (LVT 50%, (30 %, ISO 3219 (RVT 30%,

in water in %* sp. 4/60 rpm) sp. 4/60 rpm) Shear rate: 25 rpm) sp. 5/20 rpm)

Residual monomer VP 100/ VP 100/ VP 100/ VP 100/

content in ppm* VA 300 VA 300 VA 100 VCAP 100

Moisture absorption in % 15 15 10 25

(23 C, 75% rel. humidity)*

Glass transition temperature 105 105 106 170

in C (DSC)*

Molecular weight Mw in kDa (GPC)* 65 65 250 750

Molecular weight Mn in kDa (GPC)* 15 15 40 125


15/20


LUVITEC VA 64

LUVITECVA 64

The moisture absorption of PVP can be redu-

ced specifically by the partial incorporation of

less hydrophilic comonomers, such as vinyl-

acetate (Figure 4). LUVITECVA 64, which

contains 40 wt.% of vinylacetate, has proved

its worth in numerous technical applications.

LUVITECVA 64 is nonionic. It's comonomer

ratio is optimized to make it soluble in bothwater and organic solvents such as ethanol,

isopropanol, n-propanol, glycerin, methylene

chloride, esters and ketones. LUVITECVA

64 powder is not soluble in ether or aliphatic

hydrocarbons without auxiliary solvents.

As compared with PVP homopolymers, the

glass transition temperature of LUVITEC

VA 64 of 105 C is significantly lower, giving

it a markedly improved melting behavior.LUVITECVA 64 can be extruded at approx.

130 140 C without the need for further

auxiliaries and is used in various areas as a

hot-melt adhesive.

waterabsorptionin%

rel. humidity in %

60

50

40

30

20

10

020 40 900 60 75

LUVITECVA64

LUVITEC K

O

OO

LUVITECVA 64 a vinylpyrrolidone/vinylacetate

copolymer with

reduced moisture absorption

improved melting behavior

Figure 4: Water absorption of a LUVITECVA 64 film as a function of the relative humidity at 23 C

after saturation in comparison with LUVITEC K

2.2.2Product description

Water absorption of LUVITEC

VA 64 and K


16/20


OO

LUVITEC VPC 55 K 65 W

LUVITECVPC 55 K 65 W

As in the case of LUVITECVA 64, moisture absorption compared to

the VP homopolymer can be reduced by the partial replacement of VP

by the less hydrophilic vinylcaprolactam. LUVITECVPC 55 K 65 W

is a good film former. The aqueous solution shows a reversible cloud

point at 65 C.

COLLACRALVAL

COLLACRAL is a special hydrophobic, modified vinylpyrrolidone/

vinylacetate copolymer with a glass transition temperature of approx.106 C. Due to the special modification, COLLACRALVAL can be

used as a thickener in a wide pH-range between 3 8, with optimal

performance at a pH of approx. 5.

In addition COLLACRALVAL can be used as protective colloid in

the production of resin dispersions and mixing preparation of resin

solutions with polymer dispersions.

LUVITECVPC 55 K 65 W a vinylpyrrolidone/vinylcaprolactam

copolymer with

reduced moisture absorption

reduced tackiness


17/20


2.3. Comparison between homo- and copolymers

Solubility LUVITEC

LUVITEC

LUVITEC

VA 64 VPC 55 K-grades

K 65 W

Product LUVITEC LUVITEC LUVITEC

properties VA 64 VPC 55 K-grades

K 65 W

The solubility was determined

with powder (or dried polymer

samples).

powder soluble, 5% and

20% solutions can be

produced

powder insoluble

1 = cloud point: approx. 65 C

1 Films cast from 20%,

aqueous solution; film

thickness: approx. 1 2 mm;

dried to constant weight

2 Method according to

Kempf (0 = low tack,

5 = high tack

suitable/available

Table 6: Special product properties

Table 5: Solubility

Product characteristics VP/VA VP/VCAP VP

Film formation1 clear, clear, clear,

colorless colorless, colorless,

brittle brittle

Tackiness2 1 0 5

Crosslinkability

Complex formation

Dyes

Product characteristics VP/VA VP/VCAP VP

Acetone

Cyclohexane

Dimethyl sulfoxide

Ethanol

Ethyl acetate

Ethylene glycol

Isopropanol

Methanol

Methylene chloride

Methyl ethyl ketone

N-Methylpyrrolidone

Tetrahydrofuran

Water 1


18/20


LUVICROSS a crosslinked and thus,

insoluble vinylpyrrolidone homopolymer, be-

longs to the class of products called PVPP

(polyvinylpolypyrrolidone).

The outstanding property of this crosslinked

polymer is its capacity to adsorb dissolved

substances.

Adsorption Swelling capacity

Chemical stability

3. LUVICROSS

3.1. Product range and description

LUVICROSS

Adsorption mechanisms and adsorbed compounds

Adsorption mechanisms

Hydrogen bonding

Dipolar interactions

Adsorbed compounds

Phenolic substances

Anionic dyes

H2O2

Iodine

Mycotoxins

*all data in this publication are approx. values. It does not necessarily form part of the product


Product characteristics VP homopolymer

Supplied as powder

Molecular weight* n.a. due to insolubility

Crosslinking agent in %* 2

Solids content in %* 94

pH-value (1% Susp. in water)* 5 8

Moisture absorption in % 30

(23 C, 75% rel. humidity)*

Water in %* (Karl Fischer) 6.0

Nitrogen in %* (Kjeldahl) 11.0 12.8

Ash content in % (800 C, 6 h)* 0.5

Heavy metals in ppm (as Pb)* 50

Soluble matter in water in %* 2.0

Residual monomer content

Vinylpyrrolidone in ppm

(GC, N-detector)* 25

Divinylimidazolidinone in ppm

(GC, N-detector)* 5

LUVICROSS

Characteristic parameters


19/20


O O

O

H3C

O

O

O O

HO

N=N-O

3S

-M+

LUVICROSS

A series of compounds are adsorbed in acid aqueous media or solvent mixtures by the forma-

tion of hydrogen bonds or as a result of dipolar interactions. These include for example phenolic

substances, synthetic or natural anionic dyes of the most varied categories, such as anionically

modified azo dyes, azomethine dyes and triphenylmethane dyes (Figure 5). Furthermore, myco-

toxins, such as the aflatoxins B1 and G1, zearalenone (Figure 6) or patulin are adsorbed to the

polymer. The hydrogen bonding can be completely reversed by increasing pH.

In addition, PVPP can form complexes with iodine or hydrogen peroxide in powder form or

from solutions. Unlike non-crosslinked, chainlike PVP, PVPP is insoluble in both organic andinorganic solvents. For this reason, no molecular weight can be determined for PVPP. The

chemical and physical crosslinking of the polymer renders LUVICROSS resistant to extreme

pH-values and elevated temperatures.

For guidance, 95% of the particles of the standard form of LUVICROSS are smaller than 300 m

The determination was carried out by means of laser diffraction on the powder.

3.2 Typical product properties

LUVICROSS: Interaction

Figure 5: Luvicross: Interaction with an anionic dyes Figure 6: Luvicross: Interaction with zearalenone


20/20

EDKV090

0e

=regist

eredtrademarkofBASFSE

Europe

BASF SE

Operating Division Dispersions and Pigments

Global Business Management

PVP Technical Applications

67056 Ludwigshafen, Germany

Phone: + 49621- 6097 999

Fax: + 49 621- 60 92 203

[email protected]

Addresses

NAFTA

BASF Corporation

Toll Free Phone: 800 395 5152 ext 2506

Direct Phone: +1 704 588-5280 ext 2506

Fax: +1 704 587-8171

www.basf.com/usa

South America

BASF Argentina S.A.

Phone: + 54 11 4317 ext 9618

ext 9660

Fax: + 54 11 4317 ext 9700

www.basf.com.ar

Asia

BASF South East Asia Pte. Ltd.

Phone: +65 6337-0330

Fax: +65 6430-9825

www.basf.com.sg

Date post:	05-Apr-2018
Category:	Documents
Upload:	elgendawy
View:	331 times
Download:	7 times

BASF - PVP and More_2009_Brochure

Documents