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5/21/2018 PYROVATEX Technical Brochure APRIL 20 2012 LR
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Textile Effects
PYROVATEXCP NEW
PYROVATEXCP-LFHandbook for techniciansflame retardants
Textile Competence
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Protection and Comfort
Uses 3
Mode of action 3
Checklist for optimum application of PYROVATEXCP NEW / CP-LF 4
Typical finishing process for PYROVATEXCP NEW / CP-LF 6
Combined flame retardant and water/oil repellent finishes 10
Importance of a safety margin for the durability of the finish 11
Change of shade 12
PYROVATEXCP NEW / CP-LF meets international standards 16
Care instructions / care labelling 18
Content
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Uses
PYROVATEXCP NEW / CP-LF is a flame-retardant finish for textiles of cellulose fibers and fabric blends with a synthetic
component of up to 25% (low blends; depending on fiber quality, fabric construction / weight and required FR standard).
The effects are resistant to washing at the boil and dry cleaning, provided the care instructions are observed (see care
instructions).
Chemistry
PYROVATEXCP NEW / CP-LF is based on a dialkylphosphonocarboxylic acid amide with the general formula:
PYROVATEXCP NEW / CP-LF, which is preferably used together with methylolamine precondensates, reacts with the
hydroxyl groups of the cellulose. Any unfixed PYROVATEXCP NEW / CP-LF or acid from the catalyst is removed by
alkaline washing off an integral step in the finishing process.PYROVATEXCP NEW / CP-LF is different from other flame retardant finishing systems in which resistance to washing is
mainly due to enlargement of the molecules of the finishing agent. Moreover, PYROVATEXCP NEW / CP-LF also differ
from flame retardant finishing products for synthetic fibers in its chemistry and the way it bonds to the fiber.
Mode of action
If flames or heat come into contact with flame retardant finished cellulose, a carbon scaffold is formed by dehydration
of the cellulose, counteracting heat penetration and the spread of fire. In contrast to untreated cellulose, almost noflammable gases are formed by pyrolysis and this stops combustion.
OR O P C
nH
2n C NHCH
2 OH
R O O
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Checklist for optimum application of
PYROVATEXCP NEW / CP-LF
Substrate
Weight per unit area Must not be less than 150 g/m2
Composition Cotton, viscose, linen
Any synthetic component must not exceed 15% (intimate blend with cellulose) if the
finished goods are required to pass a vertical test with edge flame application.
Higher synthetic fiber contents are feasible for goods required to pass horizontal
and surface flame impingement tests.
Dyeing / Printing Preliminary trials should be carried out to ascertain whether the dyes used are
suitable for a PYROVATEXfinish (shade, fastness, effect of pigment or dye).
Sulfur black dyeings must be thoroughly rinsed before the finish is applied.
Absorbency The goods must be suitably pretreated (desized, scoured) to insure good
absorbency. We advise against oxidative desizing because the tenacity is reduced.
pH The goods must be free of alkali and other extraneous matter and have a pH
of 5 7.
Machinery required
Pad mangle / Impregnation trough Permits a long dip
Stenter With overfeed and efficient ventilation and which can be heated up to 130C
(170C if used for curing). Batching device at exit.
Curing oven / Backer 4 5 min at 150C
Open width washing machine 5 boxes or more, winch or jig
Sanfor Machine If necessary
Protection and Comfort 4
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Process Control
Recipe The amount of PYROVATEXCP NEW / CP-LF necessary depends on the
standard specification to be met, the fiber, the weight per unit area and the
structure of the goods and must be determined by means of preliminary trials.
ULTRATEXFSA NEW orTURPEXACN NEWis recommended as the
softening agent for use with PYROVATEXCP NEW / CP-LF.
KNITTEXCHN is the best cellulose crosslinking resin and should generally
be used. For a softer handle and / or low formaldehyde emission during
finishing in combination with PYROVATEX CP-LF, it can be replaced by
KNITTEX MLF NEW*.
* available for Europe
For finishing cotton fabrics, phosphoric acid is the preferred catalyst for optimum
results.
Liquor pick-up No less than 70%.
Drying Tension, temperature, residual moisture, plastic film wrapping if curing is not tofollow immediately, stenter ventilation, nonwoven filter, if necessary.
Curing Temperature, machine ventilation and nonwoven filter, if necessary.
Washing Off Neutralization time and temperature, alkali addition, adequate rinsing and pH of
goods.
Check
The finished goods must be tested for flame retardance in accordance with the relevant standards. The durability of the
finish is then tested on fabric that has been washed as required to the standard appropriate to the end-use.
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Typical finishing process for
PYROVATEXCP NEW / CP-LF
Suggested recipes
The amount of PYROVATEXCP NEW / CP-LF can be increased if very high flame retardancy is needed.
Increase the pickup by using penetration agents. ULTRATEX/ TURPEXcan be diluted approximately 1:1 with water and then added to the bath.
The mixture is diluted with cold water to required volume.
Phosphoric acid, diluted with water, is added last.
Impregnation
The goods are impregnated on a pad mangle. Adequate liquor pick-up is essential (70 90%, depending on weight and
structure of the goods) and can be achieved by a combination of absorbent fabric and long contact of the goods with the
liquor (padding speed).
PYROVATEXCP NEW or
PYROVATEXCP-LF
KNITTEXCHN or
KNITTEXMLF NEW
ULTRATEXFSA NEW or
TURPEXACN NEW
INVADINEPBN
Phosphoric acid 80%
Work wear
350 450
50 80
30 60
5
20 24
Home textiles
280 350
40 60
30 60
5
18 22
Standard recipe (g/l)
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Drying
Dry on a stenter with maximum overfeed.
Drying temperature in the first zone 110C, in the other zones not more than 130C to minimize migration.
The goods should, if possible, be processed in a partial vacuum (air extraction) to avoid unpleasant odors in the work
place.
If the goods are not cured immediately, they must be prevented from absorbing moisture from the air by being rolled
up and wrapped in plastic film.
Non-cured PYROVATEXCP NEW / CP-LF finishes are hygroscopic. If the residual moisture on the goods is too
high, they may end up with a harsh handle as a result of migration.
Curing
Curing can be performed in a curing oven for 5 minutes at 150C or on a stenter for 30 60 seconds at 170C.
It is advisable to check the curing effect at regular intervals.
NoteDrying and curing should be carried out at maximum rate of air replacement. This largely prevents soiling of the machin-
ery. It has also been found useful to fit polyester or fiberglass nonwoven cloths onto the air filter grids. Soiled cloths can, if
necessary, be washed off, impregnated with 1% phosphoric acid, dried and used again. If the goods are to be batched up
after curing, it is advisable to cool them below 40C.
Washing off
To remove all non-fixed PYROVATEXCP NEW / CP-LF from the substrate and also the phosphoric acid used as a
catalyst for crosslinking, the goods must be washed off after curing, preferably within 24 hours.
Usually, they are washed off in an open width washing machine with no less than 5 boxes or in a winch. Smaller lengths
of material can be washed off in a jig.
Soda ash or caustic soda is added to the washing bath to neutralize the goods and to make the goods alkaline and
therefore reduce hydrolysis of the finish during storage of the finished goods. With a continuous process using open width
washing machines, soda ash must be added in proportion to the rate of fabric throughput. In order to achieve
continuous neutralization, the goods must remain in the alkaline bath for at least 2 minutes. They must then be thoroughly
rinsed with water (to avoid fish odor). After neutralizing and rinsing, they should be slightly alkaline (pH 8 9).
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Washing off on a jig Enter 35 g/l soda ash or
65 ml/l caustic soda 36B
Liquor ratio: 5 : 1
4 ends at room temperature
Change liquor 12 g/l soda ash or
22 ml/l caustic soda 36B
4 ends at 60 80C
Rinse 2 x 2 ends at 80 85 C for PYROVATEXCP NEW or
2 x 2 ends at 90 95 C for PYROVATEXCP-LF
2 ends at 40 45 C
add 3 5 g/l hydrogen peroxide
2 ends cold, with overflow
Washing off on the winch 20 40 g/l soda ash
50 60 C for 30 min for PYROVATEXCP NEW or
80 95C for 30 min for PYROVATEXCP-LF
Rinse, 45 50 C
add 3 5 g/l hydrogen peroxide
Rinse, cold
Drying
As in the previous stages of the finishing process, minimum tension is also required during drying, which is usually carried
out on a stenter with optimum overfeed. Knit goods can be provided with a top finish on the pad mangle, wet on wet.
SANFOR Treatment
In order to reduce shrinkage and improve handle, the goods can be processed with a SANFOR treatment, preferably on
a rubber blanket machine. They must contain 10 15% residual moisture when presented to the machine (heavy pressure
on rubber blanket). Experience has shown that the SANFOR treatment has in general less effect on goods that have been
finished with PYROVATEXCP NEW / CP-LF than on untreated fabrics.
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Combined flame-retardant and
water/oil repellent finishes
Recipe
Liquor pick-up: 70 90%
The goods must not contain any products with wetting properties. They can, if necessary, be scoured before being
treated, preferably in an acid bath.
In spite of the poor absorbency of the goods arising from the water-repellant effects, wetting agents must not be used
either in the finish bath or during washing off. If high water repellency or protection against chemicals is required, a wet-on-dry finish after treatment (top finish)
of the washed off goods is recommended:
40 100 g/l OLEOPHOBOLCP-C
and follow with drying and curing.
PYROVATEXCP NEW or
PYROVATEXCP-LF
KNITTEXCHN or
KNITTEXMLF NEW
TURPEXACN NEW
Phosphoric acid 80%
OLEOPHOBOLCP-C
350 450
50 80
20
20 24
80 100
Standard recipe (g/l)
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Different standards call for different levels of flame-retardants, i.e. different amounts of PYROVATEXCP NEW / CP-LF
are required to meet them. The flame retardant effect is essentially characterized by the phosphorus content (%P) of the
finished fabric. In this handbook, therefore, %P will normally be specified.
Figures 1 and 2 below show that a different amount of fixed phosphorus is needed to meet different flame retardance
standards.
The percentage phosphorus content of the goods at which the test is passed is called the limiting value. The two figures
above give the limiting phosphorus content that must be exceeded for specified items to pass a vertical burning test and a
match test.
Applying increasing amounts of PYROVATEXCP NEW / CP-LF to the goods and ascertaining the fixed amount of
phosphorus present when the test is passed determine this limiting value.
If the goods are tested after finishing, the standard is met if the fixed amount of phosphorus is slightly above the limiting
value. However, we recommend an amount at least 20%, and if technically feasible about 40%, more than the limiting
value. A safety margin of this order insures that the PYROVATEXCP NEW / CP-LF finish will still be effective after a
prolonged period of use.
Specimen calculation of amount to apply with allowance for safety margin: The test is passed if the fabric contains
1.4 % phosphorous. A 20% safety margin means an additional 0.26% phosphorus, a margin of 40% an additional
0.56% phosphorus. The total amount of phosphorus required on the textile would therefore be 1.68% and 1.96%
respectively.
The higher the amount of phosphorus above the limiting value needed to meet the standard specification, the more
durable the flame retardancy.
Importance of a safety margin
for the durability of the finish
2.0
1.8
1,6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.0
1.8
1,6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.0
1.8
1,6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
%P %P
Standard met Standard met
Limited Value = 1.4%P
Limited Value = 1.1%P
Standard NOT met Standard NOT met
Figure 1: Limiting value in vertical burning test
(EN ISO 15025)
Figure 2: Limiting value in match test
(BS 5852 ignition source 1)
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Change of shade
reactive dyes on CO
Reasons for change of shade and alteration of color
pH-value of the bath (3.1 - 3.5)
Alkaline washing-off process
Curing at high temperature
Vat and reactive dyestuffs are usually the most suitable dyes.
NOVACRONC
Yellow C-5G
Yellow C-R
Yellow C-2R
Yellow C-RG
Orange C-RN
Scarlet C-6G
Deep Red C-D
Red C-4B
Red C-2BL
Change of shade with
PYROVATEXCP NEW
3
4 5
4
4 5
4 5
4 5
2 3 Y
3 4
1
Xenon light
without CP NEW
5
6
5 6
5 6
4
4
5
4 5
5 6
Xenon light
with CP NEW
2
6 7
4 5
6
3 4
3 4
3 4
3 4
6
NOVACRONC
Blue C-R
Blue C-D
Navy C-RNavy C-BN
Yellow NP
Blue 4R
Turquoise GN
Change of shade with
PYROVATEXCP NEW
4 G
4
2 3 R3
4
3 4 R
4 5
Xenon light
without CP NEW
7
5
5 - 65
6 7
6
5 6
Xenon light
with CP NEW
6 7
3 4
3 42
6
6 7
4
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NOVACRONNC
Yellow NC
Brown NC
Olive NC
Grey NC
Change of shade with
PYROVATEXCP NEW
3 4
3 4
4
4
Xenon light
without CP NEW
6
5
6
6
Xenon light
with CP NEW
5 6
3
6
3 4
AVITERASE
Yellow SE
Red SE
Deep Blue SE
Change of shade with
PYROVATEXCP NEW
3 4
3
3 4 R
Xenon light
without CP NEW
6
4 5
4 5
Xenon light
with CP NEW
6
3
3 4
Y = yellower G = greener R = redder Bl = bluer
W = weaker De = deeper D = duller Br = brighter
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NOVACRONFN
Yellow FN-2R
Orange FN-R
Scarlet FN-6G
Brilliant Red FN-3GL
Red FN-R
Red FN-2BL
Blue FN-R
Brilliant Blue FN-G
Navy FN-BN
Yellow F-4G
Yellow NP
Orange BR
Change of shade with
PYROVATEXCP NEW
4
4 5
4
4
4 Bl
1
4 G
3 4 R
3
4 5
4
3 4
Xenon light
without CP NEW
5 6
4
4
5
4
5 6
7
6 7
4 5
4
6 7
6
Xenon light
with CP NEW
4 5
3 4
3
3
4
6
6 7
6 7
3
3 4
6
5
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NOVACRONS
Lemon S-3G
Yellow S-3R
Deep Orange S-4R
Red S-2G
Deep Cherry S-D
Red S-B
Ruby S-3B
Ocean S-R
Dark Blue S-GL
Navy S-G
Deep Night S-R
Black NN
Super Black G
Super Black R
Change of shade with
PYROVATEXCP NEW
4 5
4 5
2
4
2 3 Y
3 Bl
4
4 5
2
3 R
3 4
3
3
2 3 R
Xenon light
without CP NEW
4
4 5
3 4
3 4
4 5
4
5
6 7
4 5
4 5
4 5
5
5
5
Xenon light
with CP NEW
3 4
4 5
3
3
3 4
4
3 4
5 6
3
3
3 4
4
3
3
NOVACRONLS
Yellow LS-4G
Yellow LS-RN
Scarlet LS-2GRed LS-BN
Blue LS-3R
Brilliant Blue LS-G
Navy LS-G
Black LS-N-01
Turquoise GN
Change of shade with
PYROVATEXCP NEW
4 5
4 5
3 4 Y4
4
4
1 2 R
3
4 5
Xenon light
without CP NEW
4 5
6
3 44
6 7
6
4 5
4 5
5 6
Xenon light
with CP NEW
4
6
2 33
6
5
3
3 4
4
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Many countries have their own standards institutions that lay down a standardized burning behavior and specify it as a
standard. PYROVATEXCP NEW / CP-LF finishes meet the following standards:
Protective workwear
Europe EN ISO 11611 Welding and allied processes
EN ISO 11612 Clothing to protect against heat and flame
EN ISO 14116 Protection against heat and flame
EN ISO 15025 Method of test for limited frame spread
EN 61482-1-1 Electric arc test
EN 469 Requirements for protective clothing for firefighting
Germany DIN 66083 Classification for workwear
USA ASTM D6413 Test method for flame resistance of textiles
Decorative fabrics and curtains
Europe EN ISO 11925-2 Reaction to fire test for building products EN 13501-1 Classification of construction products and building elements
EN 13772 Burning behaviorcurtains and drapes
EN 13773 Classificationcurtains and drapes
Germany DIN 4102 B1 classification
United Kingdom BS 5867: Part 2 Specificationcurtains and drapes
Switzerland SNV 198898 Determination of the flammability
France NF P 92-503 to 507 M1 classification
Italy CSE RF 1/75
CSE RF 2/75
USA NFPA 701 Standard methods of fire tests for flame propagation of textiles
PYROVATEXCP NEW / CP-LF
meets international standards
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Upholstery fabrics
Europe EN 1021 Ignitability of upholstered furniture
Germany DIN 66084 Classification for upholstered furniture
United Kingdom BS 5852 Ignitability of upholstered seating
BS 7176 Resistance to ignition of upholstered furniture
France NF P 92-503 to 507 M1 classification
Mattress and bedding items
Europe EN 597 Ignitability of mattresses and upholstered bed bases
EN ISO 12952 Burning behavior of bedding items
EN 14533 Classification for bedding items
United Kingdom BS 7175 Ignitability of bedcovers and pillows BS 7177 Resistance to ignition of mattresses, divans, bed bases
Transportation
Europe Directive 95/28/EG Burning behavior of interior materials in vehicles
USA MVSS 302 Flammability of interior materials in passenger vehicles
FAR 25.853 Compartment interiors for aviation
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Where the after care instructions and/or labeling for the fabric after care use the International Symbols, it is important that
these symbols are qualified.
Qualification of the symbols
Care instructions
Care labelling
Required phrase
Do not use soap-based material
Do not acid rinse*
Avoid ironing or pressing with
open steam
Avoid overdrying dry low heat
Use "dry" foam only
Symbol Note
Washing temperature adjustable up to 95 C,
depending on goods
Do not use sodium hypochlorite bleach
Dry cleaning feasible in chlorinated and fluorinated
hydrocarbons with or without added water
Ironing temperature
depends on goods
Suitability for tumbler drying depends on goods
Shampoo
18Protection and Comfort
* if treated with PYROVATEX
CP NEW or CP-LF
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Do not use
soap-based material
Do not acid rinse*
Avoid ironing or
pressing with
open steam
Avoid overdrying
dry low heat
95C P
Do not use
soap-based material
Do not acid rinse*
Avoid ironing or
pressing with
open steam
Avoid overdrying
dry low heat
60C P
Use of the symbols
End-use: Workwear (depending on goods)
The standard which the fabric is claimed to meet is:
Frequent washing is necessary to avoid heavy soiling and to maintain the flame retardant properties.
End-use: Drapes/curtains, loose and fitted covers (depending on goods)
The standard which the fabric is claimed to meet is:
Annual washing is necessary to avoid heavy soiling and to maintain the flame retardant properties.
19Protection and Comfort
* if treated with PYROVATEX
CP NEW or CP-LF
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www.huntsman.com/textile_effects
HeadquartersHuntsman (Singapore) Pte Ltd
Textile Effects Division
152 Beach Road
#29-00 Gateway East
Singapore 189721
Telephone +65 6297 3363
Fax +65 6298 0037pr@huntsman.com
Region EuropeHuntsman Advanced Materials
(Switzerland) GmbH, Textile Effects
Klybeckstrasse 200
4057 Basel, Switzerland
Telephone +41 61 299 11 11
Fax +41 61 299 11 12
pr@huntsman.com
Region AmericasHuntsman International LLC
Textile Effects
3400 Westinghouse Blvd,Charlotte, NC 28273, USA
Telephone +1 704-587-5000Fax +1 704-587-5020
pr@huntsman.com
Region AsiaHuntsman Textile Effects
(China) Co. Ltd.
Flying Geese Mountain Industrial Park
Shilou Town, Panyu District, Guangzhou
511447, PR China
Telephone +86 20 3937 7000
Fax +86 20 8484 5222
pr@huntsman.com
Edition 2012
Copyright 2012 Huntsman. All rights reserved.All trademarks mentioned are registered trademarks of Huntsman Corporationor an afliate thereof in one or more, but not all countries.
IMPORTANT:The following supersedes Buyers documents. Sales of theproduct described herein (Product) are subject to the general terms
and conditions of sale of either Huntsman Advanced Materials LLC, or its
appropriate afliate. Huntsman warrants that at the time and place of delivery
all Products sold to Buyer shall conform to the specications provided to
Buyer by Huntsman.
While the information and recommendations included in this publication a re,
to the best of Huntsmans knowledge, accurate as of the date of publication,
NOTHING CONTAINED HEREIN (EXCEPT AS SET FORTH ABOVE REGAR-DING CONFORMANCE WITH SPECIFICATIONS PROVIDED TO BUYER
BY HUNTSMAN) IS TO BE CONSTRUED AS A REPRESENTATION OR
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, IN CLUDING BUT NOT
LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, NONINFRINGEMENT OF ANY INTELLECTUAL PRO-PERTY RIGHTS, OR WARRANTIES AS TO QUALITY OR CORRESPONDENCE
WITH PRIOR DESCRIPTION OR SAMPLE, AND THE BUYER ASSUMES ALL
RISK AND LIABILITY WHATSOEVER RESULTING FROM THE USE OF SUCH
PRODUCT, WHETHER USED SINGLY OR IN COMBINATION WI TH OTHER
SUBSTANCES.
No statements or recommendations made herein are to be construed as a
representation about the suitability of any Product for the particular appli-
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of such information and recommendations and the suitability of any Product
for its own particular purpose, and to ensure t hat its intended use of the
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The Product may be or become hazardous. The Buyer should obtain Material
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to the handling, use, storage, distribution and disposal of, and exposure to
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Please note that products may diff er from country to country. If you have any
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Huntsman is a member of:
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9600014eFebruary 2012, Printed in China.