公开(公告)号：US4904743A

公开(公告)日：1990-02-27

申请号：US235001

申请日：1988-08-22

申请人： Akira Sano ,  Motohiko Yoshizumi ,  Nobuya Takenuki ,  Kazuo Matsuura

发明人： Akira Sano ,  Motohiko Yoshizumi ,  Nobuya Takenuki ,  Kazuo Matsuura

IPC分类号： C08F8/20 ,  C08F8/22

CPC分类号： C08F8/22

摘要： A modified olefinic polymer is obtained by fluorinating an ethylene/.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene/.alpha.-olefin copolymer being prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said solid catalyst component containing at least magnesium and titanium:(i) Melt index: 0.01-100 g/10 min(ii) Density: 0.860-0.910 g.cm.sup.3(iii) Maximum peak temperature (Tm) as measured according to a differential scanning calorimetry (DSC) should be not lower than 100.degree. C.(iv) Insolubles in boiling n-hexane should be not less than 10% by weight.