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Water-blown, flame retardant rigid polyurethane foam

A technology of rigid polyurethane and foam materials, which is applied in the field of polyurethane foam materials and can solve problems such as reducing long-term hydrolytic stability

Inactive Publication Date: 2008-12-03
BAYER MATERIALSCIENCE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These polyester-containing foams tend to have reduced long-term hydrolytic and "creep" stability, thus becoming a problem for applications other than insulating type foams

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] The present invention is further illustrated by the following examples, but the present invention is not limited by these examples. All amounts given in "parts" and "percentages" are to be understood as being by weight unless otherwise indicated. The following materials were used to prepare the foams of the examples:

[0054] Isocyanate A MDI prepolymer with 28.9% NCO content can be MONDUR MRP

[0055] Purchased from Bayer MaterialScience;

[0056] Polyol A is a sucrose-based polyether polyol with a hydroxyl value of 370-390;

[0057] Polyol B sucrose-propylene glycol-based polypropylene oxide polyether polyol, the hydroxyl value of which is 365-395;

[0058] Polyol C glycerol polypropylene oxide capped (capped) triol with a weight average molecular weight of

[0059] 675;

[0060] Polyol D glycerol polypropylene oxide-terminated triol with a weight-average molecular weight of 160;

[0061] Polyol E Aromatic polyester polyol with a hydrox...

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PUM

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Abstract

The present invention provides a flame-retardant polyurethane foam made with non chlorofluorocarbon / hydrogenated chlorofluorocarbon- containing blowing agents and without trimethylolpropane-based polyols that achieves a Class I rating as determined by a modification of the ASTM E-84 tunnel test and may find application in electronic cabinetry, architectural decorative moldings, and interior transportation vehicle walls.

Description

field of invention [0001] The present invention generally relates to polyurethane foam materials, and more particularly relates to flame-retardant water-blown rigid polyurethane foam materials meeting the requirements of ASTM E-84 for Class I materials. Background of the invention [0002] Polyurethane foams are used in many applications such as thermal insulation, packaging, upholstery, carpet backing, automotive fascias and structural materials. An important consideration in the use of polyurethane or other polymeric foams is the ability of these foams to resist ignition or to self-extinguish once the ignition source is removed. This factor becomes even more important if the foam is used in a confined space. [0003] As will be appreciated by those skilled in the art, the most common method of reducing the flammability of polyurethane foams is to add flame retardants to the foam formulation, such as compounds containing halogens or phosphorus. Although such compounds pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/42C08G18/48C08G18/66
CPCC08K5/52C08K5/12C08G2101/0058C08G2101/0025C08G18/4883C08J2205/10C08G2130/00C08K3/22C08G18/4018C08L75/04C08G2101/0083C08K5/5333C08G2110/0025C08G2110/0058C08G2110/0083C08G18/40C08G18/42C08G18/48C08G18/66
Inventor J·L·克拉蒂D·L·麦克卡尔蒙
Owner BAYER MATERIALSCIENCE AG
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