Flexible polyurethane foam with reduced flammability

A polyurethane foam, flexible technology, applied in the field of polyurethane foam, can solve problems such as affecting foam properties

Active Publication Date: 2021-09-03
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the level of melamine needs to be high, which negatively affects the foam properties

Method used

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Experimental program
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example

[0033] All parts and percentages are by weight unless otherwise indicated. As used herein, the term combustion modification, flame retardant and similar terms refer to the performance of the material in the laboratory flammable test, and does not mean the performance of the actual fire condition.

[0034] Mainly use the following materials:

[0035] Voranol TM 6150 is a three-functional polyol (EO)-fenced trifunctional polyol (available from Dow Chemical) for producing high-elastic (HR) foam.

[0036] VORALUX TM The HF 505 is a high MW EO-enclosed hexafunctional polyol (available from Dow Chemical) for the production of HR foam.

[0037] Voranol TM The CP 1421 is an open agent having a high EO content and contains three functional polyols (commercially available from Dow Chemical Company).

[0038] High-elastic (HR) PIPA 20% is PIPA polyol, based on triethanolamine and TDI 80 / 20 polyisocyanate in HR carrier polyol Original position reaction.

[0039] NIAX TM The A-300 is an amine ...

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PUM

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Abstract

A method of forming flexible polyurethane foams that pass the BS 5852:2006 source V (Crib 5) test. The method includes providing a modified polyisocyanate polyaddition (PIPA) 5 polyol obtained by combining a PIPA polyol dispersion with at least one polyol having a melting point above zero degrees Celsius and in the presence of Formed by contacting carboxylic acids in a carrier solvent. Based on the total weight of the PIPA polyol dispersion, the PIPA polyol dispersion has a polyol liquid phase content of 60 wt % to 90 wt % and a solid particle phase content of 10 wt % to 40 wt %. Based on the total weight of the polyol blend of the PIPA polyol and at least one other polyether polyol, from 10 weight percent (wt %) to 80 wt % of the modified PIPA polyol is combined with 90 wt % to 20 wt % of At least one other polyether polyol combination, wherein the polyether polyol is formed from propylene oxide and ethylene oxide and has an equivalent weight of 1,000 to 2,000 and a functionality of 3 to 6. The combination of the modified PIPA polyol and the polyether polyol is reacted with a polyisocyanate and a blowing agent to form the flexible polyurethane foam.

Description

Technical field [0001] The present disclosure relates to polyurethane foams, and more particularly to flexible polyurethane foams with reduced flammability. Background technique [0002] Polyurethane foams are typically prepared by reacting with polyisocyanates with polyols, which are typically a hydroxyl functional polyoxyalkylene polyether polyol. By controlling the functionality of the polyisocyanate and the molecular weight and functional degree of the polyol, it is possible to prepare a polyurethane foam from a particularly soft flexible foam to a very hard foam. [0003] In order to improve the mechanical properties of the polyurethane foam, the polyol containing the dispersion solid has become common. Commonly used polyol dispersion, such as a so-called "graft polyol", which is a stable dispersion of a vinyl polymer, typically an homopolymer or copolymer of acrylonitrile and styrene. Such polyols can increase the carrying capacity of the polyurethane foam, for example, whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/3492C08K5/54C08G18/18C08G18/22C08G18/24C08G18/34C08G18/08C08G18/40C08G18/48C08G18/76C08G18/66C08G101/00
CPCC08G18/4829C08G18/4833C08G18/4841C08G18/6688C08G18/7621C08G18/163C08G18/168C08G18/18C08G18/1833C08G18/222C08G18/244C08K5/34922C08G18/409C08G18/4816C08K5/54C08G2110/0083C08G2110/005C08G2110/0008C08G18/485
Inventor L·波切利F·M·卡萨蒂P·库克森
Owner DOW GLOBAL TECH LLC
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