Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-10-01
1993-10-05
Seccuro, Jr., Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525323, 525240, 525194, 525 53, C08L 2310, C08L 2326, C08L 2318, C08F29708
Patent
active
052506312
ABSTRACT:
Polypropylene impact copolymer compositions and visbroken derivatives thereof demonstrate a good balance of low temperature properties and resistance to stress whitening when the homopolymer phase is at least predominantly homopolymeric polypropylene and the rubber phase comprises a major proportion of ethylene with a minor proportion of .alpha.-olefin of at least 4 carbon atoms and a minor proportion of propylene.
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patent: 4334040 (1982-06-01), Fujii et al.
patent: 4454306 (1984-06-01), Fujii et al.
patent: 4535125 (1985-08-01), McCullough
patent: 4734459 (1988-03-01), Cecchin et al.
Meyers, III Otto O.
Seccuro, Jr. Carman J.
Shell Oil Company
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