Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1982-12-23
1984-03-27
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524505, C08K 334
Patent
active
044395736
ABSTRACT:
A polypropylene composition useful for producing a shaped article, for example, a bumper, having excellent rigidity, resistance to mechanical impact at a low temperature and superior lacquer-bonding property and appearance, comprises:
(A) 40% to 75% by weight of at least one crystalline ethylene-propylene block copolymer in which the content of the polymerized ethylene is in the range of from 5% to 10% by weight, in which the polypropylene component has a fraction thereof insoluble in boiling n-heptane, in an amount of 97% or more, in which a fraction of the block copolymer soluble in p-xylene at room temperature, has an intrinsic viscosity of from 2.5 to 4 determined in decahydronaphthalene at a temperature of 135.degree. C. and which has a melt flow index of from 11 to 70;
(B) 20% to 40% by weight of at least one amorphous ethylene-propylene copolymer having an intrinsic viscosity of from 1.0 to 2.0 determined in decahydronaphthalene at a temperature of 135.degree. C., and a Mooney viscosity ML.sub.1+4 of from 5 to 40 determined at a temperature of 100.degree. C.; and
(C) 5% to 20% by weight of talc in the form of fine particles having an average size of from 0.1 to 5 microns.
REFERENCES:
patent: 4363885 (1982-12-01), Fukui et al.
Fukui Osamu
Sanmiya Tsugumi
Sano Yutaka
Tanaka Kazuyoshi
Umemoto Yoshiro
Lilling H.
Marquis Melvyn I.
Toyota Jidosha & Kabushiki Kaisha
UBE Industries
LandOfFree
Propylene polymer 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 Propylene polymer composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propylene polymer composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1756739