A ONE-COMPONENT TYPE POLYURETHANE PREPOLYMER COMPOSITION

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United States of America Patent

APP PUB NO 20220403165A1
SERIAL NO

17597709

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Abstract

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A one-component type polyurethane prepolymer composition comprises a reaction product formed through a reaction between reactants comprising (a) at least one polyisocyanate, and (b) a polyol blend comprising at least one bifunctional polyether polyol, wherein the bifunctional polyether polyol is a homopolymer of propylene oxide, homopolymer of butylene oxide, or copolymer of alkylene oxide, and has a number average molecular weight from 3000 g/mol to 9000 g/mol, and at least one trifunctional polyether polyol, wherein the trifunctional polyether polyol is a copolymer of alkylene oxide and end-capped with 10 wt % to 28 wt %, by the total weight of the trifunctional polyether polyol, of ethylene oxide, and has a number average molecular weight from 5000 g/mol to 8000 g/mol, wherein the bifunctional polyether polyol and the trifunctional polyether polyol are present in a parts by weight ratio from 4:1 to 2.5:1, and wherein the polyisocyanate and the polyol blend are present in a parts by weight ratio of from 1:7 to 1:2.5.

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Patent Owner(s)

Patent OwnerAddress
DOW GLOBAL TECHNOLOGIES LLCMICHIGAN USA MICHIGAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Wei Shanghai, CN 2284 14552
Shen, Cheng Shanghai, CN 43 112
Sun, Gang Shanghai, CN 134 1808
Suzuki, Masayuki Yokohama, JP 451 6359
Wang, Nan Shanghai, CN 270 961
Xiong, Jiawen Shanghai, CN 10 3

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