Polynetwork EPDM rubber

Details Polynetwork EPDM rubber Polynetwork EPDM rubber

1985-12-30

1987-04-28

Pertilla, Theodore E.

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...

524511, 525 68, 525285, 525903, 525919, C08L 5104, C08K 304

Patent

active

046615547

ABSTRACT:
Polynetwork EPDM rubber is EPDM rubber containing both ionomeric and covalent cross-links, and can be formed by treating EPDM rubber with maleic acid or anhydride or fumaric acid to attach succinic groups to the rubber, forming an ionomer thereof with a polyvalent metal oxide, hydroxide or salt, and then covalently cross-linking the rubber, for example, by sulfur vulcanization. Compositions are shown containing the polynetwork rubber in combination with oil and black, optionally in blends with high-diene hydrocarbon rubber, such as natural rubber.

REFERENCES:
patent: 3287440 (1966-11-01), Giller et al.
patent: 4010223 (1977-03-01), Caywood
patent: 4244843 (1981-01-01), Hashimoto et al.
patent: 4410656 (1983-10-01), Coran et al.

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