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Additives Flame Retardants
Exactly your chemistry.
Exolit® for PolyurethaneApplication areas for Exolit grades
Exolit for Polyurethane
2
> Application areas for Exolit grades
Contents
Exolit for polyurethane 2
Flame retardants for polyurethane 4
Flexible polyether foam (slabstock and molded foam) 6
Flexible polyester foam (slabstock foams) 8
Rigid PU foam 10
Rigid PIR foam 12
Integral skin foam 13
Cast resins 14
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Exolit for polyurethane
With its Exolit grades the Pigments & Additives Division offers an ex-tensive range of flame retardants for polyurethane on a non-halogen basis.The Exolit grades exhibit following characteristics:
Exolit in the case of fire
Low smoke gas corrosivity> Reduced damage of installations
and buildings
Low smoke density> Extended escape time
Exolit-compatibility
Highly effective, low dosage, high polymer compatibility> Only slight influence on mechanical
properties
Excellent incorporation into matrix> No migration
Good recyclability of FR-Polyurethanes> Meet current and future consumer
recycling requirements
Because of these properties Exolit flame retardants contribute to meetingthe customer requirement regardingenvironmental impact and image.Polyurethane systems which incorpo-rate Exolit flame retardants can obtainthe most demanding fire tests, whilstretaining good mechanical properties.These features allow the materials tobe used in new and demanding fieldsof application.
Exolit-in final product
Excellent ageing stability> Low dosage, no migration, high
quality during life cycle
Attractive price/performance ratio> Competitive systems
Optimal emission behaviour> Minimization of the exposition risk
of volatile organic compounds (VOC)
* = Federal motor vehicle safety standard
Application area Test Description Classification
Under the brand name Exolit, Clariantsupplies non-halogenated environmen-tally friendly flame retardants with an assured future in polyurethaneapplications.
Their advantage lies in their effective-ness, which enables very low con-centrations to be used, while at thesame time meeting the most stringent requirements. In the event of fire involving Exolit-containing systems,
a reduction in smoke density is appa-rent. Since no halogen-containing flameretardants are required, no corrosivegases such as HCl or HBr are released.These properties are of great impor-tance in modern vehicle manufacture.
Flame retardants for polyurethane
Automotive FMVSS 302* Flammability SE > SE/NBR > SE/B > BCalifornia Techn. Bulletin 117 Fire resistancePBT VWT 709 VOC Emission ValueDIN 75201 Fogging characteristics Value
Construction DIN 4102 (Germany) Chimney test B1 > B2NF P 92-501 (France) Epiradiateur M1 > M2 > M3
Electrical & UL 94 (International) Burning time after ignition V0 > V1 > V2electronics HF1 > HF2 > HBF
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Polyurethane product overview
Products Supply form Flexible polyurethane foams Rigid polyurethane foams PUPolyether Polyester Integral PUR PIR Integral Casting/
skin skin moulding
Exolit AP 422 White powderExolit AP 462 White powderExolit AP 750 White powderExolit OP 550 Medium-viscosity liquidExolit OP 560 Medium-viscosity liquidExolit RP 6520 Red thixotropic dispersionExolit RP 6580 Red thixotropic dispersion
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Figure 3: VOC-Emissions of flexible polyether foams containing 6 php flame retardant,head space examination (5 h / 120 °C).
Cl-Diphos-phate 3)
ExolitOP 550
ExolitOP 560
TCPP 1) TDCPP 2) Cl-Diphos-phate 3 )
ExolitOP 550
ExolitOP 560
1mg
Figure 2: DIN 75201: Fogging condensates of flexible polyether foamscontaining 7.5 php flame retardant.
22.5 25.0 27.5 30.0 32.5 35.0Foam Density (kg/m3)
Flexible polyether foam (slabstock and molded foam)
Figure 1: MVSS 302: Minimum FR levels to achieve class SE of flexible polyetherfoams at different foam densities.
Advantages of Exolit:> Liquid reactive,
incorporable flame retardants > Low migration> Low emissions (e.g. low
fogging and VOC-values)> High flame retardant efficiency
through product life cycle> Only slight influence on
mechanical foam properties> Usable in conventional production
facilities by adding directly atthe mixing head
> Good performance in flame laminating processing (low smokeemission, good adhesion)
> In the case of fire, low smoke gas corrosiveness
Exolit OP 550 TDCPP 2 )
1) = Tris(chloroisopropyl)phosphate 2) = Tris(dichloroisopropyl)phosphate 3) = Tetrakis(2-Chloroethyl)dichloroisopentyldiphosphate
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12
8
4
0
(mg)
20
15
10
5
0
(php)
350
300
250
200
150
100
50
0
(ppm)
7
Products
Exolit OP 550 Liquid, medium viscosity, reactive phosphorus polyol (functionality approx. 2)Exolit OP 560 Liquid, medium viscosity, reactive phosphorus polyol (functionality approx. 2)
Application area Classification Addition rate
Automotive FMVSS 302 2-10 parts of Exolit OP 550 orClass SE OP 560/100 parts polyolDIN 75201 2-10 parts of Exolit OP 550 or(Fogging-test G) with <1 mg OP 560/100 parts polyol
Construction California TB 117 6-12 parts of Exolit OP 550 orOP 560/100 parts polyol
DIN 4102 6-12 parts of Exolit OP 550 orClass B2 OP 560/100 parts polyol
Advantages of Exolit:> No emissions
(e.g. low fogging and VOC-values)> Solid easily dispersible in polyol
(Exolit AP)> Usable in conventional production
facilities by adding directly into themixing head (Exolit OP)
Flexible polyester foam (slabstock foams)
> Highly effective> Only slight influence on
mechanical properties> No contribution to corrosive
gases in the case of fire> Reduced foam dripping
in the case of fire (Exolit AP)
Products
Exolit AP 422 White powder D50 15 µm, standard productExolit AP 462 White powder D50 20 µm, microencapsulated for moisture sensitive applications Exolit OP 560 Liquid, medium viscosity, reactive phosphorus polyol (functionality approx. 2)
Application area Classification Addition rate
Construction DIN 4102 8-10 parts Exolit AP 422 in combinationClass B2 with 8-10 parts Exolit OP 560 /
100 parts polyol
Automotive FMVSS 302 5-10 parts Exolit AP 422 or 2-10 partsClass SE Exolit OP 560/100 parts polyolDIN 75201 G (no fogging) 5-10 parts Exolit AP 422/100 parts polyolDIN 75201 G < 1 mg 2-10 parts Exolit OP 560/100 parts polyolPBT VWT 709 5-10 parts Exolit AP 422/100 parts polyolno VOC or FOG contribution
Electrical UL 94 10-20 parts Exolit AP 422/ Class HF1 100 parts polyol
The addition rate to achieve a specific fire classification depends heavily on the polyol, blowing agent and foam density.
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Figure 4: PBT VWT 709: Emission behaviour of flexible polyester foams in fire classification SE (FMVSS 302).
1) = Tris(dichloroisopropyl)phosphate* = Federal motor vehicle safety standard
TDCPP 1)*
(8 php)
Exolit OP 560(4 php)
Exolit AP 422(9 php)
no FR
VOC FOG
350
300
250
200
150
100
50
0
(ppm)
10
halogenated FR Exolit AP 422 no FR
CO HCI HCN
Figure 6: NBS Smoke chamber (ASTM-E 662): Combustion gas analysis of burning rigid,n-pentane based DIN 4102 B2 foams (flaming conditions)
Rigid PU foam
Advantages of Exolit AP:> Enables non-halogenated,
pentane based DIN 4102 B2 formulations
> Easily dispersible in polyols> Perfectly incorporated > No migration, no emissions > Only slight influence on
mechanical foam properties> Reduced smoke values
Advantages of Exolit RP:> Highly efficient> Meet high requirements
Advantages of Exolit OP:> Liquid, reactive (graftable)
phosphorus polyol > Compatible with conventional
production equipment by addingdirectly into the mixing head
1 2 3 4 5 6Time [min]
halogenated FR
no Fr
Exolit AP 422
Figure 5: NBS Smoke chamber (ASTM-E 662): Specific optical smoke densities of burning rigid, n-pentane based DIN 4102 B2 foams
250
200
150
100
50
0
(DS) Flaming conditions
1 2 3 4 5 6Time [min]
halogenated FR
no Fr
Exolit AP 422
100
80
60
40
20
0
(DS) Smoldering conditions
200
180
160
140
120
100
80
60
40
20
0
(ppm) Smoke gas analysis
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Products
Exolit AP 422 White powder D50 15 µm, standard productExolit AP 462 White powder D50 20 µm, microencapsulated for moisture sensitive applications Exolit OP 550 Liquid, medium viscosity, reactive phosphorus polyol (functionality approx. 2)Exolit OP 560 Liquid, medium viscosity, reactive phosphorus polyol (functionality approx. 2)Exolit RP 6520 Red thixotropic dispersion of highly stabilized red phosphorus, carrier: castor oilExolit RP 6580* Red thixotropic dispersion of highly stabilized red phosphorus, carrier: TCPP
The addition rate to achieve a specific fire classification depends heavily on the polyol, blowing agent and foam density.* = Contains halogen
Application area Classification Addition rate
Construction DIN 4102 15-50 parts of Exolit AP 422 Class B2 or AP 462/100 parts of polyol
(depending on the polyols and blowing agents used)
DIN 4102 15-30 parts of Exolit OP 550 Class B2 or OP 560/100 Parts of polyol
(depending on the polyols and blowing agents used)
DIN 4102 10-30 parts of Exolit RP 6520 Class B2 or RP 6580/100 parts of polyol
(additional parts of TCPP are depending on the systems used)
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Rigid PIR foam
Advantages of Exolit AP:> Easily dispersable in polyols> Perfectly incorporated > No migration, no emissions > Only slight influence on
mechanical foam properties> Reduced smoke values
Advantages of Exolit RP:> Highly efficient> Meets high requirements
(e.g. DIN 4102 B1)
Application area Classification Addition rate
Construction DIN 4102 5-10 parts Exolit AP 422 /Class B2 100 parts polyol (blowing agent
pentane, NCO index 250, combinedwith other non-halogenated liquid flame retardants)
Class B1 15 parts Exolit RP 6580/100 parts polyol (blowing agent R 141b,high NCO index combined with additional TCPP)
NF P 92-501 10-15 parts Exolit RP 6580/100 parts Class M1 polyol (blowing agent R 141b,
high NCO index combined with additional TCPP)
Products
Exolit AP 422 White powder D50 15 µm, standard productExolit AP 462 White powder D50 20 µm, microencapsulated for moisture sensitive applications Exolit RP 6580 Red thixotropic dispersion of highly stabilized red phosphorus, carrier: TCPP
The addition rate to achieve a specific fire classification depends heavily on the polyol, blowing agent and foam density.
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Integral skin foam
Advantages of the Exolit AP:> Fine cell foam structure > Solid material,
easily dispersible in polyol > No migration> Highly effective> No influence on mechanical
properties
> No plasticizing effects> Low smoke gas corrosivity in
the case of fire> No influence on foam recycling
(e.g. on glycolisis)
Products
Exolit AP 422 White powder D50 15 µm, standard productExolit AP 462 White powder D50 20 µm, microencapsulated for moisture sensitive applications Exolit AP 750 White powder, intumescent flame retardant system based on Exolit AP 422Exolit RP 6520 Red thixotropic dispersion of highly stabilised red phosphorus, carrier: castor oil
The addition rate to achieve a specific fire classification depends heavily on the polyol, blowing agent and foam density.
Application area Classification Addition rate
Construction DIN 4102 10-15 parts Exolit AP 422 / Class B2 100 parts polyol,
rigid integral skin foam
Electrical UL 94 10-15 parts Exolit AP 422 / Class 5V 100 parts polyol,
rigid integral skin foam
The extremely demanding requirements of railway and aircraft standards (e.g. DIN 5510, ABD 031) can be achieved with these highly effective flame retardants in special developed rigid and flexible integral skin formulations
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Cast resins
Advantages of the systems:> Low smoke gas corrosiveness
in the case of fire> Low filler content> Low processing viscosity and
good flow properties> Exolit RP 6520 does not affect the
electrical properties
Figure 7: Flame retardant concentrations in cast resins: Exolit combined with ATHcompared to pure ATH (aluminia trihydrate)
ATH Exolit AP 422 Exolit RP 6520
ATH ATH + RP 6520ATH + AP 422
350
300
250
200
150
100
50
0
(php) UL 94 V-0 (1.6 mm)
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Products
Exolit AP 422 White powder D50 15 µm, standard productExolit AP 462 White powder D50 20 µm, microencapsulated for moisture sensitive applications Exolit RP 6520 Red thixotropic dispersion of highly stabilized red phosphorus, carrier: castor oil
Application area Classification Addition rate
The addition rate to achieve a specific fire classification depends heavily on the polyol, blowing agent and foam density.
Electrical UL 94 10-15 parts Exolit AP 422 /Class V-1, 1.6 mm 100 parts polyolClass V-0, 1.6 mm 20-30 parts Exolit AP 422 combined
with 70-120 parts ATHClass V-0, 1.6 mm 15-25 parts Exolit RP 6520 combined
with 50-100 parts ATH /100 parts polyol
Transportation DIN 5510 25-35 parts Exolit AP 422 combinedClass S4 SR2 ST2 with 20 parts Exolit RP 6520
and 100 parts ATH
This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant’s products for its particular application. * Nothing included in this information waives any of Clariant’s General Terms and Conditions of Sale, which control unless it agrees otherwise in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing Clariant products, are available upon request and are provided in compliance with applicable law. You should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact Clariant.
* For sales to customers located within the United States and Canada the following applies in addition: NO EXPRESS OR IMPLIED WARRANTY IS MADE OF THE MERCHANTABILITY, SUITABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE OF ANY PRODUCT OR SERVICE.
® = Trademark of Clariant registered in many countries
© 2012 Clariant International Ltd DA
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Exactly your chemistry.
www.additives.clariant.com www.exolit.com [email protected]
Clariant International Ltd Business Unit Additives Business Line Flame RetardantsRothausstrasse 61 4132 Muttenz Switzerland Phone: +41-61-469-78 50 Fax: +41-61-469-7550