Production of polyolefins having improved properties

Details Production of polyolefins having improved properties Production of polyolefins having improved properties

2006-03-28

2006-03-28

McClendon, Sanza L. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S113000, C522S157000, C522S150000, C522S160000, C522S161000

Reexamination Certificate

active

07019044

ABSTRACT:
A process for producing polypropylene having increased melt strength, the process comprising (i) homopolymerising polypropylene or copolymerising propylene with one or more comonomers selected from ethylene and C4 to C101-olefins to produce a polypropylene homopolymer or copolymer respectively having a double bond concentration of at least 0.1 per 10,000 carbon atoms, (11) irradiating the polypropylene with an electron beam having an energy of at least 5 MeV and at radiation dose of at least 5 kGray, and (iii) melting and mechanically processing the melt of polypropylene to form long chain branches on the polypropylene molecules.

REFERENCES:
patent: 2948666 (1960-08-01), Lawton
patent: 5047446 (1991-09-01), DeNicola, Jr.
patent: 5411994 (1995-05-01), Galli et al.
patent: 5414027 (1995-05-01), DeNicola et al.
patent: 5554668 (1996-09-01), Scheve et al.
patent: 5560886 (1996-10-01), Saito et al.
patent: 5731362 (1998-03-01), Scheve et al.
patent: 5820981 (1998-10-01), Williams et al.
patent: 5883151 (1999-03-01), Raetzsch et al.
patent: 6136926 (2000-10-01), Raetzsch et al.
patent: 6632854 (2003-10-01), Charlier
patent: 6699919 (2004-03-01), Charlier
patent: 2198651 (1997-08-01), None
patent: 0190889 (1986-08-01), None
patent: 0351866 (1990-01-01), None
patent: 0451804 (1991-10-01), None
patent: 0519341 (1992-12-01), None
patent: 0520773 (1992-12-01), None
patent: 0634441 (1995-01-01), None
patent: 0678527 (1995-10-01), None
patent: 0799839 (1997-10-01), None
patent: WO 97/08216 (1997-03-01), None

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