发明名称 |
Process for the production of elastic molded articles |
摘要 |
Elastic molded articles having a closed surface layer are made from polyurea elastomers by the reaction injection molding technique. These polyurea elastomers are prepared from a polyisocyanate in which all of the isocyanate groups are aromatically bound, a polyether and a diamine. The polyether has at least two isocyanate-reactive groups and a molecular weight from 1800 to 12,000. At least 50% of the isocyanate-reactive groups in the polyether are pjrimary and/or secondary amino groups. The diamine has a molecular weight from 108 to 400 and primary and/or secondary aromatically bound amino groups. Known auxiliary agents and additives may also be employed.
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申请公布号 |
US4774263(A) |
申请公布日期 |
1988.09.27 |
申请号 |
US19820443414 |
申请日期 |
1982.11.22 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
WEBER, CHRISTIAN;WIRTZ, HANS;SEEL, KLAUS |
分类号 |
C08G18/00;C08G18/50;C08G18/65;C08G18/66;(IPC1-7):C08G18/14 |
主分类号 |
C08G18/00 |
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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