Polypropylene resin composition, method for its production,...

Details Polypropylene resin composition, method for its production,... Polypropylene resin composition, method for its production,...

2005-06-28

2005-06-28

Mullis, Jeffrey (Department: 1711)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S194000

Reexamination Certificate

active

06911497

ABSTRACT:
A polypropylene resin composition having a melt flow rate of 70 to 120 g/10 min (at 230° C., 2.16 kgf-load), a flexural modulus of 1300 to 4000 MPa and an IZOD impact strength of 30 to 100 kJ/m2, wherein the composition is obtained by adding a small amount of an organic peroxide to a mixture comprising 60 to 80% by weight of a specific propylene-ethylene block copolymer made up of a propylene homopolymer portion and a propylene-ethylene random copolymer portion, a rubber which is a copolymer of ethylene and at least one α-olefin having a melt flow rate of 2 to 10 g/10 min (at 190° C., 2.16 kgf-load), and inorganic filler (C), and kneading the combined ingredients at a temperature of 170 to 280° C.

REFERENCES:
patent: 4626565 (1986-12-01), Kawai et al.
patent: 5449738 (1995-09-01), Koura et al.
patent: 5473021 (1995-12-01), Koura et al.
patent: 5747576 (1998-05-01), Sobajima et al.
patent: 5990220 (1999-11-01), Sobajima et al.
patent: 6087443 (2000-07-01), Sadatoshi et al.
patent: 6284355 (2001-09-01), Nagata et al.
patent: 6326434 (2001-12-01), Lee et al.
patent: 6608130 (2003-08-01), Zanka et al.
patent: 6635705 (2003-10-01), Itoh et al.
patent: 08-283487 (1996-10-01), None

Affiliated with

Also associated with

Rating

Polypropylene resin composition, method for its production,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polypropylene resin composition, method for its production,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polypropylene resin composition, method for its production,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3516697