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EPOXY RESIN ADHESIVE COMPOSITIONS CONTAINING AN ISOCYANATE TERMINATED POLYURETHANE PREPOLYMER AND A CHAIN EXTENDER
EPOXY RESIN ADHESIVE COMPOSITIONS CONTAINING AN ISOCYANATE TERMINATED POLYURETHANE PREPOLYMER AND A CHAIN EXTENDER
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机译:包含异氰酸酯封端的聚氨酯预聚物和链延长剂的环氧树脂胶粘剂组合物
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1329112 Epoxy resins modified by polyurethanes or polythiourethanes DOW CHEMICAL CO 17 Nov 1970 [17 Nov 1969] 54692/70 Headings C3B C3P and C3R A curable resin composition comprises: (I) a polyglycidyl ether of a polyhydric phenol or of an alcohol, and (II) 5-50 parts by wt. per 100 parts of I of a modifier, compatible with I, having reactive terminal groups which is obtained from 2 moles of an organic diisocyanate (optionally in admixture with an organic monoisocyanate), 1 mole of a polymer, M.W. 500-5000, containing reactive hydrogen atoms and containing in its chain flexibilizing groups -O-, -S-, -CO-, -OCONH-, -CONH-, -NHCONH-, -SCONH-, -OSiO- or -C = C-C- and 1 mole of a material X-R-XSP1/SP or in which each X and XSP1/SP is independently SH, OH, NH 2 or COOH, R is an aliphatic or aromatic group; XSP11/SP and XSP111/SP each represent an organic radical containing an epoxy or thioepoxy group and RSP1/SP is a hydrocarbon radical. Typical examples of II are prepared from: (1) propylene oxide-propylene glycol polyether polyol (M.W. 2000), toluene diisocyanate and 4-mercaptobutanol; (2) a polyester of adipic acid and tripropylene glycol, toluene diisocyanate and 4-mercaptobutanol; and (3) a hydroxyl terminated butadiene - acrylonitrile polymer (85 : 15), toluene diisocyanate, phenyl isocyanate and 4-mercaptobutanol.
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