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US 2020/0199302 A1Published application
Organic silicon compound-modified copolymer and urethane composition including same
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMunenao HIROKAMI, Yuji ANDO
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Abstract
An organic silicon compound-modified copolymer having structural units represented by formula (1) and formula (2) and having a hydroxyl group at at least one end has excellent compatibility with alcohol compounds and isocyanate compounds and also gives a cured product having excellent water repellency and moisture resistance. (In the formulas, an asterisk * represents a bond to an adjacent structural unit, each R1 independently represents a C1-10 alkyl group or C6-10 aryl group, and n represents an integer of 1 or higher.)
Claims4
An organic silicon compound-modified copolymer comprising:
- a structural unit of formula (1) below;
- a structural unit of formula (2) below;
- and a hydroxyl group at at least one end:
- wherein asterisk * is a bond to an adjacent structural unit, R1 is each independently a C1-C10 alkyl group or C6-C10 aryl group, and n is an integer of 1 or higher.
1 more element
Dependencies are inferred from the claim text.