发明公开
EP0368577A2 Crystalline polypropylene and compositions thereof
无效
Kristallines Polypropylen und daraus gefertigte Zusammensetzungen。
- 专利标题： Crystalline polypropylene and compositions thereof
- 专利标题（中）： Kristallines Polypropylen und daraus gefertigte Zusammensetzungen。
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申请号： EP89311433.0申请日： 1989-11-03
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公开(公告)号： EP0368577A2公开(公告)日： 1990-05-16
- 发明人: Kakugo, Masahiro , Sadatoshi, Hajime , Sakai, Jiro , Wakamatsu, Kazuki , Chikaishi, Kazuhiro , Kojima, Toshiro , Nomura, Hideo , Fukao, Tomohisa
- 申请人： SUMITOMO CHEMICAL COMPANY, LIMITED
- 申请人地址： 5-33 Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka JP
- 专利权人： SUMITOMO CHEMICAL COMPANY, LIMITED
- 当前专利权人： SUMITOMO CHEMICAL COMPANY, LIMITED
- 当前专利权人地址： 5-33 Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka JP
- 代理机构： Dixon, Donald Cossar
- 优先权： JP279934/88 19881104; JP290921/88 19881116
- 主分类号： C08L23/10
- IPC分类号： C08L23/10
摘要：
A crystalline polypropylene has a ratio of weight average molecular weight to number average molecular weight of 10 or more, preferably 15 or more, an intrinsic viscosity (η) of from 0.8 to 5.0 dl/g (measured in tetralin at 135°C), a cold xylene-soluble content of not more than 4% by weight, a density (d) of 0.910 g/cm or more (measured at 23°C), and a long period (L) (Å) (measured at 25°C by a small-angle X-ray scattering method) satisfying:
L ≦ Lc = 6667d - 5894
wherein d is the density at 23°C and Lc is a value (Å) obtained by Lc =6667d - 5894.
The crystalline polymer can be compounded with 1 ppm to 20 wt% of an alpha-olefin or vinylcyloalkane whose homopolymer melts at at least 270°C, the composition produced having (d) and (L) as above; part of the composition can be block copolymerized.
Catalysts for producing the polymer are described.
The product as a powder is melted and moulded to shape. The mouldings have good rigidity, heat resistance and surface hardness.
L ≦ Lc = 6667d - 5894
wherein d is the density at 23°C and Lc is a value (Å) obtained by Lc =6667d - 5894.
The crystalline polymer can be compounded with 1 ppm to 20 wt% of an alpha-olefin or vinylcyloalkane whose homopolymer melts at at least 270°C, the composition produced having (d) and (L) as above; part of the composition can be block copolymerized.
Catalysts for producing the polymer are described.
The product as a powder is melted and moulded to shape. The mouldings have good rigidity, heat resistance and surface hardness.
公开/授权文献
- EP0368577B1 Crystalline polypropylene and compositions thereof 公开/授权日：1995-05-17
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