发明名称 |
DRIVBRENSLEKORN BUNDNA MED POLYURETANER BASERADE PA POLYBUTADIENER MED HYDROXYLENDGRUPPER |
摘要 |
Salicylate ester-blocked polyisocyanates are of formula (Ie (where X is an organic gp. of valency n+m; R is H or 1-10C alkyl; R1 is 1-10C alkyl or 6-10C aryl; n is >=1; m is 0 or 1; m+n is >=2). - Used for reaction with polybutadiene with end OH gps. to form polyurethane prepolymers suitable as binders for rocket propellants. Pot life of the mixt. of binder and rocket fuel granules during casting at 28 degrees C is extended, which dissociation occurs at hardening temp., e.g. 63 degrees C, so that hardening time is not extended. |
申请公布号 |
SE7712842(A) |
申请公布日期 |
1978.05.16 |
申请号 |
SE19770012842 |
申请日期 |
1977.11.14 |
申请人 |
* THIOKOL CORPORATION |
发明人 |
W H * GRAHAM;I G * SHEPARD |
分类号 |
C08G18/00;B01J31/00;C06D5/00;C06D5/06;C07C67/00;C07C239/00;C07C269/02;C07C271/08;C07C271/58;C08G18/69;C08G18/78;C08G18/80;(IPC1-7):C07C125/06 |
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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