Polyolefin compositions containing high and low molecular weight

Details Polyolefin compositions containing high and low molecular weight Polyolefin compositions containing high and low molecular weight

1994-09-23

1996-03-12

Michl, Paul R.

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

Synthetic resins

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

525193, 525211, C08L 2310, C08L 2304, C08L 2316

Patent

active

054986710

ABSTRACT:
The present invention relates to polymer compositions having improved adhesion for coating materials. The compositions include 40-90% by weight of a polyolefin, 10-50% by weight of a first rubber component and 1-20% by weight of a second rubber component. The first rubber component is preferably an ethylene propylene diene rubber having a weight average molecular weight of 50,000 to 300,000, while the second rubber is an ethylene-propylene diene rubber having a number average molecular weight of about 2,000 to 10,000.

REFERENCES:
patent: 4536547 (1985-08-01), Lundberg et al.
patent: 4843128 (1989-06-01), Cesare
patent: 5011891 (1991-04-01), Spenadel et al.
patent: 5162441 (1992-11-01), Nakata et al.
patent: 5239000 (1993-08-01), Kim et al.
Rubber World Blue Book, Materials & Compounding Ingredients for Rubber, "Ethylene-Propylene-Diene Terpolymers (EPDM)", 1975, pp. 406-410

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