发明名称 |
Process for preparing TPU molding compositions |
摘要 |
A process for the continuous production of a thermoplastic molding composition containing a mixture of TPU and a (co)polymer is disclosed. The process comprises (a) introducing into an extruder under time and temperature conditions sufficient to bring about the formation of thermoplastic polyurethane a (co)polymer, and polyurethane-forming components comprising A) an organic diisocyanate, B) a linear polyol having terminal hydroxyl groups and a molecular weight of 500 to 5000, and C) a chain extender having a molecular weight of 60 to 500, and upon completing the formation of said polyurethane (b) discharging the resulting TPU/(co)polymer mixture from the extruder. Importantly, the (co)polymer contains a flow enhancer and the molar ratio of the NCO groups in A) to the groups which react with NCO in B) and C) is 0.9 to 1.2.
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申请公布号 |
US5696205(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19960629983 |
申请日期 |
1996.04.08 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
MUELLER, FRIEDEMANN;BRAEUER, WOLFGANG;HOPPE, HANS-GEORG;WUSSOW, HANS-GEORG;HEIDINGSFELD, HERBERT;MEISTER, WILLI;SCHULTE, BERNHARD;WINKLER, JUERGEN |
分类号 |
B29C67/24;C08G18/08;C08G18/42;C08G18/65;C08G18/66;C08L75/00;C08L75/04;(IPC1-7):C08G18/04 |
主分类号 |
B29C67/24 |
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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