flexible polyurethane foam

A flexible polyurethane foam technology, applied in the field of flexible polyurethane foam, can solve problems such as unsuitable comfort and support performance, difficulty in processing and molding, and use of unfavorable raw materials and components

Inactive Publication Date: 2011-11-30
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, many of these existing flexible polyurethane foams have one or more deficiencies, such as the use of unfavorable raw materials and components, the use of high numbers of components, processing and molding difficulties, unsuitable comfort and support properties, and densities greater than 100kg / m 3 , and the flammability when subjected to flexural fatigue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] The flexible polyurethane foams of Example 1 and Example 2 comprised the same formulation with the obvious difference that the formulation of Example 2 contained a flame retardant additive whereas the formulation of Example 1 contained no flame retardant additive. Additionally, the flexible polyurethane foams of Example 1 and Example 2 had the same percent height loss when subjected to 80,000 cycles of slamming. However, unexpectedly, even without the flame retardant additive, the flexible polyurethane foam of Example 1 is flame retardant according to the flammability test of California Technical Bulletin 117, while the flexure of the flexible polyurethane foam of Example 1 The amount of fatigue is irrelevant. Furthermore, since the flexible polyurethane foam of Example 1 does not contain flame retardant additives, the flexible polyurethane foam is cost-effective to manufacture.

[0096] In contrast, the flexible polyurethane foam of Comparative Example 4 failed the ci...

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Abstract

A flexible polyurethane foam having a density of less than 100 kg / m3 comprising the reaction product of a polyisocyanate composition and an isocyanate-reactive composition. The polyisocyanate composition comprises a polymeric diphenylmethane diisocyanate (MDI) component and a monomeric diphenylmethane diisocyanate (MDI) component containing 2,4'-MDI, the 2,4'-MDI The monomeric MDI is present in an amount greater than 35 parts by weight, based on 100 parts by weight of said monomeric MDI. The isocyanate-reactive composition comprises a primary hydroxyl-terminated graft polyether polyol and a second polyol different from the primary hydroxyl-terminated graft polyether polyol. The primary hydroxyl terminated graft polyether polyol comprises a carrier polyol and particles of copolymerized styrene and acrylonitrile. The weight average molecular weight of the carrier polyol is >3,500 g / mol.

Description

technical field [0001] The present invention relates generally to flexible polyurethane foams and methods of making said flexible polyurethane foams. More specifically, the present invention relates to flexible polyurethane foams having flame retardancy regardless of the amount of flex fatigue of said flexible polyurethane foams. Background technique [0002] Polyurethane foams are available in a wide range of stiffness, hardness and density. One type of polyurethane foam, flexible polyurethane foam, is especially useful for cushioning, supporting, and comforting furniture articles. For example, flexible polyurethane foam is often incorporated into furniture comfort articles such as padding and padding and into furniture support articles such as mattresses and spacers. [0003] Flexible polyurethane foam is generally flammable, especially when subjected to repeated compression and bending. Repeated compression and bending often lead to damage to the cellular structure of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/63C08G18/76
CPCC08G2101/0058C08G18/4072C08G18/7664C08G18/7671C08G18/632C08G2101/0008C08G2101/005C08G2110/0008C08G2110/005C08G2110/0058C08G18/40C08G18/63C08G2101/00C08J9/00
Inventor T·M·斯米伊森斯基S·E·沃杰斯科
Owner BASF SE
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