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US 5,288,806 AGranted
Thermoplastic olefins with low viscosity
AssigneeExxon Chemical Patents Inc.
InventorAndrew J. Peacock
Life of this patent
Estimating the term…
Abstract
This invention relates to a ternary blend of 20 to 50 wt. % of random propylene copolymer of approximately 2% ethylene, 10 to 40 wt. % ethylene/propylene rubber, and 20 to 50 wt. % high density polyethylene for use as a molded article.
Claims20
A composition of matter consisting essentially of:
- a) about 20 to about 60 wt % random propylene copolymer (RCP) having about 1.5 to about 6 mole percent .alpha.-olefin comonomer;
- b) about 10 to about 30 wt % ethylene/.alpha.-olefin rubber having a viscosity higher than a) or c) (ER);
- and
- c) about 20 to about 50 wt % polyethylene (HDPE) with a density of 0.94 g/cm.sup.3 or above,
- said wt % being based upon the total weight of a, b and c, said composition of a), b) and c) and the mixture of a) and c) having a melt flow ratio of 2 g/ 10 min. or more at 230.degree. C.
2 more elements
A composition consisting essentially of
- a) about 20 to about 60 wt % random propylene copolymer having about 1.5 to about 6 mole percent .alpha.-olefin comonomer;
- b) about 10 to about 30 wt % ethylene/.alpha.-olefin rubber having a viscosity higher than a) or c);
- c) about 20 to about 50 wt % polyethylene with a density of 0.94 g/cm.sup.3 or above, said wt % being based upon the total weight of a, b and c;
- and
- d) a filler in an amount of up to 100 parts filler per 100 parts of the combination of a, b, & c, said composition of a), b), and c) and the mixture of a) and c) having a melt flow ratio of 2 g/ 10 min. or greater at 230.degree. C.
2 more elements
A composition consisting essentially of:
- a) about 35 to about 50 wt % random propylene copolymer containing about 1.5 to about 4.5 mole percent ethylene;
- b) about 15 to about 30 wt % ethylene/.alpha.-olefin rubber having a viscosity higher than a) or c);
- c) about 25 to about 45 wt % polyethylene with a density of 0.94 g/cm.sup.3 or above;
- and
- d) optionally, filler present at 100 parts per 100 parts of the combination of a, b and c, said composition of a), b) and c) and the mixture of a) and c) having a melt flow ratio of 2 g/10 min. or greater at 230.degree. C.
2 more elements
A process for producing the polymeric composition comprising, blending, a), b) and c).
Dependencies are inferred from the claim text.