发明名称 |
Method of preparing an aliphatic polyurea spray elastomer system |
摘要 |
This invention concerns a method for the preparation of polyurea elastomers, comprising: (a) reacting an amine chain extender with dialkyl maleate to form an aspartic ester, wherein the chain extender has a molar amount of amine groups that is less than the moles of dialkyl maleate; (b) blending the aspartic ester with one or more polyoxyalkyleneamines to prepare a resin blend; (c) contacting the resin blend with an isocyanate under conditions effective to form a polyurea elastomer. This invention also concerns a a polyurea elastomer, comprising the reaction product of (a) a resin blend containing one or more polyoxyalkyleneamine and an aspartic ester and (b) an isocyanate, wherein the aspartic ester in the resin blend comprises a reaction product of an amine chain extender and a dialkyl maleate, wherein the mole ratio of amine functionality in the amine chain extender to dialkyl maleate or fumarate is greater than 1:1.
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申请公布号 |
US6013755(A) |
申请公布日期 |
2000.01.11 |
申请号 |
US19970815154 |
申请日期 |
1997.03.11 |
申请人 |
HUNTSMAN PETROCHEMICAL CORPORATION |
发明人 |
PRIMEAUX, II, DUDLEY J.;ZIMMERMAN, ROBERT L.;HILLMAN, KENNETH M. |
分类号 |
C08G18/10;C08G18/38;C08G18/48;C08G18/50;(IPC1-7):C08G18/32;C08G18/46 |
主分类号 |
C08G18/10 |
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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