KR910006358A - Alkylene oxide adducts and polyurethane foams prepared therefrom - Google Patents

Abstract

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Description

Alkylene oxide adducts and polyurethane foams prepared therefrom

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Claims (10)

A product having an average hydroxyl equivalent weight of 800 to 3000 and containing up to about 20% by weight of polymerized ethylene oxide, having ₃ to 4 active hydrogen atoms per molecule of C ₃ or higher alkylene oxide, and an average hydroxyl equivalent weight of 50 to 3000 A hydroxyl-terminated alkylene oxide addition suitable for use in the preparation of soluble polyurethane foams obtained by reaction with an initiator comprising at least one component (a) of 750 and containing 50% by weight of polymerized ethylene oxide. water. The component of the initiator according to claim 1, wherein the initiator further comprises component (b) having from 2 to 4 active hydrogen atoms per molecule and having an average hydroxyl equivalent of less than 500 and containing less than 25% by weight of polymerized ethylene oxide Alkylene oxide adduct in which (a) is present in an amount of from 5 to 50% by weight, based on the mixed weight of components (a) and (b). The alkylene oxide adduct according to claim 1 or 2, wherein component (a) of the initiator contains at least 60% by weight of polymerized ethylene oxide. The alkylene oxide adduct according to any one of claims 1 to 3, wherein the average hydroxyl equivalent of component (a) of the initiator is from 100 to 500, or from 175 to 400. The alkylene oxide adduct according to any one of claims 1 to 4, wherein component (a) of the initiator contains at least 70% by weight of polymerized ethylene oxide. The alkylene oxide of any one of claims 2 to 5, wherein component (a) of the initiator is present at 10 to 40, or 10 to 30 weight percent, based on the mixed weight of components (a) and (b). Adjunct. The method of claim 1, wherein the C ₃ , or higher alkylene oxide reacted with the initiator is 1,2-propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide and mixtures thereof. Phosphorus alkylene oxide adduct. The compound of claim 6, wherein the average hydroxyl equivalent weight is between 1000 and 2500; Component (a) containing 1,2-propylene oxide with an average hydroxyl equivalent weight of 175-400 and at least 70% by weight of polymerized ethylene oxide and an average hydroxyl equivalent weight of 50-500 with 2-4 active hydrogen atoms per molecule And an alkylene oxide adduct containing 1 to 7% by weight of polymerized ethylene oxide, which is a product reacted with an initiator comprising component (b) containing no polymerized ethylene oxide. A polyurethane foam prepared by reacting an alkylene oxide adduct according to any one of claims 1 to 8 in the presence of an organic polyisocyanate with a blowing agent, a surfactant and a catalyst. A polyol composition for producing a flexible polyurethane foam comprising from about 1 to about 99% by weight of an alkylene oxide adduct according to any one of claims 1 to 8. ※ Note: The disclosure is based on the initial application.