发明名称 |
Epoxy-urethanes based on copolyesters |
摘要 |
Described are polyester-urethane-epoxy adhesives produced by reacting one or more diols with two or more dicarboxylic acids to form a polyester prepolymer; chain-extending the prepolymer with an organic diisocyanate to yield a hydroxy-terminated polyester-urethane; capping the urethane partially or completely with a dicarboxylic acid or anhydride of dicarboxylic acid; and finally reacting with an epichlorohydrin/bisphenol A-type epoxy resin, forming an epoxy polyester-urethane block copolymer. The resulting product may then be crosslinked in use as an adhesive.
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申请公布号 |
US4267288(A) |
申请公布日期 |
1981.05.12 |
申请号 |
US19790059888 |
申请日期 |
1979.07.23 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
BURKHART, DEAN C.;HARPER, LEE R.;SOMMERFELD, EUGENE G. |
分类号 |
C08G18/42;C08L75/06;C09J163/02;C09J175/06;(IPC1-7):C08L63/00 |
主分类号 |
C08G18/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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