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US4640950A Thixotropic polyurethane resin compositions 失效
触变性聚氨酯树脂组合物

Thixotropic polyurethane resin compositions
Abstract:
A polyurethane resin composition which comprises (1) a polyurethane prepolymer in the form of liquid or solution, (2) colloidal silica and (3) a siloxane compound having a polyoxyethylene chain in the molecule maintains an excellent thixotropy even after solvents and additives are added and kneaded as the case may be.
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