发明授权
US5218058A Flexible elastic polyurethane films a process for their preparation and
their use
失效
柔性弹性聚氨酯薄膜的制备及其应用的过程
- 专利标题： Flexible elastic polyurethane films a process for their preparation and their use
- 专利标题（中）： 柔性弹性聚氨酯薄膜的制备及其应用的过程
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申请号： US527512申请日： 1990-05-23
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公开(公告)号： US5218058A公开(公告)日： 1993-06-08
- 发明人: Gerhard Zeitler , Gerhard Lehr
- 申请人： Gerhard Zeitler , Gerhard Lehr
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 主分类号： B29C67/04
- IPC分类号： B29C67/04 ; B29K75/00 ; C08G18/66 ; C08J5/18 ; C08K3/22 ; C08K3/36 ; C08L75/04
摘要：
The present invention deals with flexible elastic polyurethane films, efficaciously having a thickness from 0.3 to 3 mm, prepared by sintering powdered thermoplastic polyurethanes, having:(a) a melt index of from 50 to 350, measured at 190.degree. C. with a compression force of 21.6 kg, and(b) a Shore A hardness of from 80 to 98, preferably while using from 0.05 to 1 part by weight of powdered aluminum oxide and/or silica gel per 100 parts by weight of said thermoplastic polyurethane, utilizing a heated mold.The polyurethane films are preferably used for coating molded articles used in the interior of motor vehicles.
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