Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-08-31
1992-10-27
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 93, 524291, 524349, 524350, C08K 547
Patent
active
051589974
ABSTRACT:
Disclosed is an olefin polymer-based thermoplastic elastomer comprising a propylene polymer material, an amorphous olefin copolymer rubber, and optionally a semicrystalline, essentially linear ethylene-C.sub.3-4 alpha-olefin copolymer, having incorporated therein zinc salts of certain mercapto compounds and sterically hindered di-tertiary butyl phenol compounds. The compositions exhibit good retention of properties at elevated temperatures.
REFERENCES:
patent: 2997456 (1961-08-01), Mills
patent: 3112300 (1963-11-01), Natta et al.
patent: 4036912 (1977-07-01), Stricharczuk
patent: 4125509 (1978-11-01), Vostovich
patent: 4260661 (1981-04-01), Walters et al.
patent: 4824883 (1989-04-01), Walters et al.
Himont Incorporated
Hoke Veronica P.
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