Flexible polypropylene resin

Details Flexible polypropylene resin Flexible polypropylene resin

2005-02-15

2005-02-15

Mulcahy, Peter D. (Department: 1713)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S581000, C524S582000, C524S583000

Reexamination Certificate

active

06855756

ABSTRACT:
The present invention relates to a soft polypropylene resin having a melt index falling in a specific range, prepared by melting and kneading a substantial propylene homopolymer or a propylene copolymer composition each having specific properties in the presence of a radical-generating agent.According to the present invention, capable of being provided at a good productivity is a soft polypropylene resin which is useful as an alternative for a polyvinyl chloride resin in the fields of films, sheets, construction materials and the like and which is excellent in fluidity.

REFERENCES:
patent: 6156846 (2000-12-01), Tsuruoka et al.
patent: 6423782 (2002-07-01), Yukimasa et al.
patent: 6632885 (2003-10-01), Morizono et al.
patent: 497590 (1992-08-01), None
patent: 6-116391 (1994-04-01), None
patent: 7-247318 (1995-09-01), None
patent: 8-12713 (1996-01-01), None
patent: 2000-248020 (2000-09-01), None

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