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Title:
ONE-COMPONENT TYPE POLYURETHANE PREPOLYMER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/022470
Kind Code:
A1
Abstract:
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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Inventors:
SHEN CHENG (CN)
WANG NAN (CN)
SUN GANG (CN)
SUZUKI MASAYUKI (JP)
XIONG JIAWEN (CN)
LI WEI (CN)
Application Number:
PCT/CN2019/099388
Publication Date:
February 11, 2021
Filing Date:
August 06, 2019
Export Citation:
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Assignee:
DOW GLOBAL TECHNOLOGIES LLC (US)
SHEN CHENG (CN)
WANG NAN (CN)
SUN GANG (CN)
SUZUKI MASAYUKI (JP)
XIONG JIAWEN (CN)
LI WEI (CN)
International Classes:
C08G18/10; C08G18/24; C08G18/40; C08G18/48; C08G18/76; C09D175/08; C09J175/08
Foreign References:
US6077456A2000-06-20
CN102408866A2012-04-11
CN104995226A2015-10-21
CN102666624A2012-09-12
US20060020101A12006-01-26
Other References:
See also references of EP 4010389A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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