发明名称 |
Polymethylene polyphenylamine modified diamine chain extenders and polyurea elastomers therefrom. |
摘要 |
<p>Reaction injection molded polyurea elastomers are disclosed that are derived from the reaction of (1) an aromatic polyisocyanate; (2) primary or secondary amine terminated polyethers; and (3) a novel aromatic amine extender combination comprising (a) an aromatic diamine having at least one of the positions ortho to each amine group substituted by a lower alkyl group and (b) a polymethylene polyphenylamine. The blending of (2) and (3) affords novel polyamine blends which are useful for preparing the polyurea elastomers of this invention.</p><p>The use of the polymethylene polyphenyl amine component allows for the retention of the good physical properties of the prior art polyureas while at the same time effecting a cost reduction in the preparation of this useful class of polymers. </p> |
申请公布号 |
EP0219709(A2) |
申请公布日期 |
1987.04.29 |
申请号 |
EP19860113144 |
申请日期 |
1986.09.24 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
EWEN, JAMES H.;GUERRERO, JOHN O. |
分类号 |
C08G18/00;C08G18/10;C08G18/32;C08G18/65;C08G18/66;(IPC1-7):C08G18/32;C08G18/50 |
主分类号 |
C08G18/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|