Polyether esters as flame retardants for polyurethane flexible foams

A foamed plastic, polyurethane technology, applied in transportation and packaging, vehicle safety arrangement, pedestrian/occupant safety arrangement, etc., can solve the problem of high flammability of foamed plastics

Inactive Publication Date: 2005-08-03
BAYER MATERIALSCIENCE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, surprisingly, the flammability of the foam obtained by this method is higher than that of pure polyether flexible foam.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] raw material

[0037] Polyol

[0038] Polyol A: PO / EO adduct of glycerol and propylene glycol mixture, OH value 56 (under the trade name Arcol  1105 available from Bayer AG)

[0039] Polyol B: polyester polyol based on adipic acid, phthalic anhydride and ethylene glycol, OH number 64 (under the trade name Desmophen  PEP 175A is available from Bayer AG)

[0040] Polyol C: Polyester polyol based on adipic acid, isophthalic acid and diethylene glycol, OH number 112 (under the trade name Desmophen  VP.LS 2782 available from Bayer AG)

[0041] Polyol D: EO adduct of a mixture of phthalic anhydride, diethylene glycol and ethylenediamine, OH value 310, functionality 2 (under the trade name Desmophen  VP.PU 1431 available from Bayer AG)

[0042] Polyol E: PO adduct of phthalic anhydride, diethylene glycol, sorbitol and ethylenediamine mixture, OH value 435, functionality 2.8 (trade name Desmophen  VP.PU 20AP74 available from Bayer AG)

[0043] flame retardant ...

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Abstract

Flexible polyurethane foams that satisfy the requirements of FMVSS 302 are produced by reacting a polyisocyanate with a polyol component that includes: (1) from 90 to 99 parts by weight of a polyether polyol having an OH value of from 20 to 200 mg KOH / g and functionality of from 2 to 4 and (2) from 1 to 10 parts by weight of a polyether ester polyol having an OH value of from 150 to 450 mg KOH / g and a functionality of from 2 to 3 in the presence of a blowing agent, catalyst and stabilizer. The foams thus produced are useful as cushioning for furniture and automotive applications.

Description

technical field [0001] The present invention relates to flexible polyurethane foams meeting Federal Motor Vehicle Safety Standard 302 ("FMVSS 302") and methods of making and using the foams. Background technique [0002] Flexible polyurethane ("PUR") foams are obtained by reacting one or more polyols and one or more organic polyisocyanates in the presence of one or more blowing agents and catalysts. The foamed plastics are widely used, for example, as carpet pads, linings, mattresses, cushions, furniture upholstery materials, insulation materials and the like. Foam plastics made from polyisocyanates and polyester polyols with suitable auxiliaries and additives, having a bulk density of about 35 kg / m 3 , can meet the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 302. However, this ester-type PUR foam is inferior to existing ether-type PUR foams in many properties. For example, compared with ether-type PUR foam, ester-type PUR foam has poorer open cell, lowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/38C08G18/40C08G101/00C08J9/00C08J9/14
CPCC08G2101/0008C08J9/14C08J2375/04C08G18/3885C08J9/0038C08G18/4018C08K5/523C08G2110/0008C08L75/04
Inventor T·德赖尔R·罗尔斯M·戈斯纳S·迈尔-阿伦斯
Owner BAYER MATERIALSCIENCE AG
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