发明授权
- 专利标题: Light-weight polyester film and process for its production
- 专利标题(中): 轻质聚酯薄膜及其生产工艺
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申请号: US828146申请日: 1992-01-30
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公开(公告)号: US5204418A公开(公告)日: 1993-04-20
- 发明人: Kenji Yasue , Eiji Y. Yamamoto , Katsuyuki Toma , Minoru Kishida , Yoshiaki Kozuka
- 申请人: Kenji Yasue , Eiji Y. Yamamoto , Katsuyuki Toma , Minoru Kishida , Yoshiaki Kozuka
- 申请人地址: JPX Amagasaki
- 专利权人: Unitika Ltd.
- 当前专利权人: Unitika Ltd.
- 当前专利权人地址: JPX Amagasaki
- 优先权: JPX3-032238 19910131
- 主分类号: C08J5/18
- IPC分类号: C08J5/18 ; C08J9/00 ; C08L33/24 ; C08L35/06 ; C08L67/00 ; C08L67/02 ; C08L79/00 ; C08L79/08
摘要:
A light-weight polyester film which comprises (A) from 50 to 95% by weight of a crystalline polyester resin and (B) from 5 to 50% by weight of a maleimide copolymer, said maleimide copolymer being dispersed in the film in the form of particles having diameters of from 0.1 to 20 .mu.m and fine voids being present in the film, and which has an apparent specific gravity of from 0.3 to 1.1, wherein said maleimide copolymer comprises from 30 to 50 mol % of a maleimide monomer group, from 30 to 70 mol % of an aromatic vinyl monomer group, from 0 to 40 mol % of an unsaturated dicarboxylic anhydride monomer group and from 0 to 40 mol % of other copolymerizable monomer group, and said maleimide copolymer has a glass transition temperature higher by at least 10.degree. C. than the crystalline polyester resin.
公开/授权文献
- US6073467A Catalyst gauzes for gaseous reactions 公开/授权日:2000-06-13