Textile Effects PYROVATEX CP NEW PYROVATEX CP-LF Library/a... · PYROVATEX® CP NEW / CP-LF is a flame-retardant finish for textiles of cellulose fibers and fabric blends with a

Textile Effects

PYROVATEX® CP NEWPYROVATEX® CP-LFHandbook for technicians—flame retardants

Textile Competence

Protection and Comfort

Uses 3

Mode of action 3

Checklist for optimum application of PYROVATEX® CP NEW / CP-LF 4

Typical finishing process for PYROVATEX® CP 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

PYROVATEX® CP NEW / CP-LF meets international standards 16

Care instructions / care labelling 18

Content

Uses

PYROVATEX® CP 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

PYROVATEX® CP NEW / CP-LF is based on a dialkylphosphonocarboxylic acid amide with the general formula:

PYROVATEX® CP NEW / CP-LF, which is preferably used together with methylolamine precondensates, reacts with the

hydroxyl groups of the cellulose. Any unfixed PYROVATEX® CP NEW / CP-LF or acid from the catalyst is removed by

alkaline washing off – an integral step in the finishing process.

PYROVATEX® CP 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, PYROVATEX® CP 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 no

flammable gases are formed by pyrolysis and this stops combustion.

OR — O P — CnH2n — C — NHCH2 — OHR — O O

— —

— —

——

3Protection and Comfort

Checklist for optimum application of PYROVATEX® CP 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 PYROVATEX® finish (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 130ºC

(170ºC if used for curing). Batching device at exit.

Curing oven / Backer 4 – 5 min at 150°C

Open width washing machine 5 boxes or more, winch or jig

Sanfor Machine If necessary

Protection and Comfort 4

Process Control

Recipe The amount of PYROVATEX® CP 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.

ULTRATEX® FSA NEW or TURPEX® ACN NEW is recommended as the

softening agent for use with PYROVATEX® CP NEW / CP-LF.

KNITTEX® CHN 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 to

follow 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.


Typical finishing process for PYROVATEX® CP NEW / CP-LF

Suggested recipes

• The amount of PYROVATEX® CP NEW / CP-LF can be increased if very high flame retardancy is needed.

• Increase the pickup by using penetration agents.

• ULTRATEX® / TURPEX® can 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).

PYROVATEX® CP NEW or

PYROVATEX® CP-LF

KNITTEX® CHN or

KNITTEX® MLF NEW

ULTRATEX® FSA NEW or

TURPEX® ACN NEW

INVADINE® PBN

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)


Drying

• Dry on a stenter with maximum overfeed.

• Drying temperature in the first zone 110ºC, in the other zones not more than 130ºC 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 PYROVATEX® CP 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 150ºC or on a stenter for 30 – 60 seconds at 170ºC.

It is advisable to check the curing effect at regular intervals.

Note

Drying 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 40ºC.

Washing off

To remove all non-fixed PYROVATEX® CP 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).


• Washing off on an open-width washing machine (PYROVATEX® CP NEW)

Method 1: Padding

35 g/l soda ash or65 ml/l caustic soda (36°Bé)

12 g/l soda ash or 22 ml/l caustic soda (36°Bé)

rinse with 12-15 liter water per kilogram fabric

3 – 5 g/l hydrogen peroxide

30°C60°C 60°C 60°C 60°C 60°C60°C 60°C 45°C

Method 2




60°C 60°C 60°C 60°C 60°C60°C 60°C 45°C

The pH of the finished fabric must not be below 8 – 9.


30°C

• Washing off on an open-width washing machine (PYROVATEX® CP-LF)

Method 1: Padding




30°C60°C 95°C 95°C 95°C 75°C60°C 60°C 45°C

Method 2




60°C 95°C 95°C 95°C 75°C60°C 60°C 45°C



30°C





Washing off on a jig Enter 35 g/l soda ash or

65 ml/l caustic soda 36°Bé

Liquor ratio: 5 : 1

4 ends at room temperature

Change liquor 12 g/l soda ash or

22 ml/l caustic soda 36°Bé

4 ends at 60 – 80°C

Rinse 2 x 2 ends at 80 – 85 °C for PYROVATEX® CP NEW or

2 x 2 ends at 90 – 95 °C for PYROVATEX® CP-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 PYROVATEX® CP NEW or

80 – 95°C for 30 min for PYROVATEX® CP-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 PYROVATEX® CP NEW / CP-LF than on untreated fabrics.


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 OLEOPHOBOL® CP-C

and follow with drying and curing.

PYROVATEX® CP NEW or

PYROVATEX® CP-LF

KNITTEX® CHN or

KNITTEX® MLF NEW

TURPEX® ACN NEW

Phosphoric acid 80%

OLEOPHOBOL® CP-C

350 – 450

50 – 80

20

20 – 24

80 – 100

Standard recipe (g/l)


Different standards call for different levels of flame-retardants, i.e. different amounts of PYROVATEX® CP 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 PYROVATEX® CP 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 PYROVATEX® CP 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)


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.

NOVACRON® C

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

PYROVATEX® CP 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

NOVACRON® C

Blue C-R

Blue C-D

Navy C-R

Navy C-BN

Yellow NP

Blue 4R

Turquoise GN


PYROVATEX® CP NEW

4 G

4

2 – 3 R

3

4

3 – 4 R

4 – 5

Xenon light

without CP NEW

7

5

5 - 6

5

6 – 7

6

5 – 6

Xenon light

with CP NEW

6 – 7

3 – 4

3 – 4

2

6

6 – 7

4


NOVACRON® NC

Yellow NC

Brown NC

Olive NC

Grey NC


PYROVATEX® CP 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

AVITERA™ SE

Yellow SE

Red SE

Deep Blue SE


PYROVATEX® CP 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


NOVACRON® FN

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


PYROVATEX® CP 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


NOVACRON® S

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


PYROVATEX® CP 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

NOVACRON® LS

Yellow LS-4G

Yellow LS-RN

Scarlet LS-2G

Red LS-BN

Blue LS-3R

Brilliant Blue LS-G

Navy LS-G

Black LS-N-01

Turquoise GN


PYROVATEX® CP NEW

4 – 5

4 – 5

3 – 4 Y

4

4

4

1 – 2 R

3

4 – 5

Xenon light

without CP NEW

4 – 5

6

3 – 4

4

6 – 7

6

4 – 5

4 – 5

5 – 6

Xenon light

with CP NEW

4

6

2 – 3

3

6

5

3

3 – 4

4


Many countries have their own standards institutions that lay down a standardized burning behavior and specify it as a

standard. PYROVATEX® CP 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 behavior—curtains and drapes

EN 13773 Classification—curtains and drapes

• Germany DIN 4102 B1 classification

• United Kingdom BS 5867: Part 2 Specification—curtains 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

PYROVATEX® CP NEW / CP-LF meets international standards


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


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


* if treated with PYROVATEX® CP NEW or CP-LF

Do not use

soap-based material

Do not acid rinse*

Avoid ironing or

pressing with

open steam

Avoid overdrying

dry low heat

95°C P• • •

Do not use

soap-based material

Do not acid rinse*

Avoid ironing or

pressing with

open steam

Avoid overdrying

dry low heat

60°C 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.


* if treated with PYROVATEX® CP NEW or CP-LF

www.huntsman.com/textile_effects

HeadquartersHuntsman (Singapore) Pte LtdTextile Effects Division152 Beach Road#29-00 Gateway EastSingapore 189721Telephone +65 6297 3363Fax +65 6298 [email protected]

Region EuropeHuntsman Advanced Materials(Switzerland) GmbH, Textile EffectsKlybeckstrasse 2004057 Basel, SwitzerlandTelephone +41 61 299 11 11Fax +41 61 299 11 [email protected]

Region AmericasHuntsman International LLCTextile Effects3400 Westinghouse Blvd, Charlotte, NC 28273, USATelephone +1 704-587-5000Fax +1 [email protected]

Region AsiaHuntsman Textile Effects (China) Co. Ltd.Flying Geese Mountain Industrial ParkShilou Town, Panyu District, Guangzhou511447, PR ChinaTelephone +86 20 3937 7000Fax +86 20 8484 [email protected]

Edition 2012Copyright © 2012 Huntsman. All rights reserved.All trademarks mentioned are registered trademarks of Huntsman Corporation or an affiliate thereof in one or more, but not all countries.

IMPORTANT: The following supersedes Buyer’s documents. Sales of the product described herein (“Product”) are subject to the general terms and conditions of sale of either Huntsman Advanced Materials LLC, or its appropriate affiliate. Huntsman warrants that at the time and place of delivery all Products sold to Buyer shall conform to the specifications provided to Buyer by Huntsman.

While the information and recommendations included in this publication are, to the best of Huntsman’s 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, INCLUDING 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 WITH 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-cation of Buyer or user or as an inducement to infringe any patent or other intellectual property right. Buyer is responsible to determine the applicability of such information and recommendations and the suitability of any Product for its own particular purpose, and to ensure that its intended use of the Product does not infringe any intellectual property rights.The Product may be or become hazardous. The Buyer should obtain Material Safety Data Sheets and Technical Data Sheets from Huntsman containing detailed information on Product hazards and toxicity, together with proper shipping, handling and storage procedures for the Product, and should com-ply with all applicable governmental laws, regulations and standards relating to the handling, use, storage, distribution and disposal of, and exposure to the Product. Buyer shall also take all steps necessary to adequately inform, warn and familiarize its employees, agents, direct and indirect customers and contractors who may handle or be exposed to the Product of all hazards pertaining to and proper procedures for safe handling, use, storage, trans-portation and disposal of and exposure to the Product, and the containers or equipment in which the Product may be handled, shipped or stored.

Please note that products may differ from country to country. If you have any queries, kindly contact your local Huntsman representative.

Huntsman is a member of:

(Ecological and Toxicological Association of Dyes and Organic Pigments Manufacturers)

9600014e—February 2012, Printed in China.

Documents

Textile Effects PYROVATEX CP NEW PYROVATEX CP-LF Library/a... · PYROVATEX® CP NEW / CP-LF is a flame-retardant finish for textiles of cellulose fibers and fabric blends with a