C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 53/00 (2006.01) C08K 3/34 (2006.01) C08L 23/08 (2006.01) C08L 23/18 (2006.01) C08L 23/16 (2006.01)
Patent
CA 2077033
POLYPROPYLENE RESIN COMPOSITION ABSTRACT OF THE DISCLOSURE A polypropylene resin composition comprising: (A) 45 to 70% by weight of an ethylene-propylene block copolymer synthesized under the process comprising the steps of; (a) polymerizing propylene with a Ziegler- Natta catalyst to obtain a highly crystalline polypropylene that contain not less than 97% by weight of a fraction insoluble in boiling n-heptane, and (b) copolymerizing ethylene with the polypropylene (a), and which (a) contains 0.5 to 10% by weight of ethylene, (b) contains 5 to 20% by weight of a fraction being soluble in p-xylene at room temperature and having an intrinsic viscosity value of not less than 2 (measured in decalin at 135°C), (c) has a melt-flow index value of 30 to 100g/10 min., and, (d) has a value of flexure modulus of not less than 18,000 kg/cm2, (B) 10 to 20% by weight of an amorphous ethylene- propylene copolymer having (a) an ethylene content of 70 to 90% by weight, (b) a Mooney viscosity value (ML1+4 at 100°C) of 5 to 20, (C) 5 to 15% by weight of an ethylene-.alpha.-olefin copolymer having (a) an .alpha.-olefin content of 5 to 15% by mole, (b) a value of gravity of not more than 0.91, and (c) a melt-flow index value of 2.2 to 50 g/10 min. at 230°C, (D) 1 to 10% by weight of an amorphous ethylene- butene copolymer having (a) a butene content of 10 to 25% by weight, and (b) a Mooney viscosity value (ML1+4, at 100°C) of 5 to 20, (E) not more than 15% by weight of a talc that (a) has an average diameter D50 of from 1.0 to 3.0 µm, and (b) does not contain a particle having a diameter of 10 µm or more, wherein the component (B) is rubber reinforced by lamellae of components (C) and (D).
Fukui Osamu
Iwai Hisayuki
Nakano Yoshifumi
Nishio Takeyoshi
Nomura Takao
Cassan Maclean
Ube Industries Ltd.
LandOfFree
Polypropylene resin composition 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, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polypropylene resin composition will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1897100