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US 5,352,739 AGranted
Compatibilization of elastomer blends
AssigneeExxon Chemical Patents Inc.
InventorPalanisamy Arjunan
Life of this patent
Estimating the term…
Abstract
This invention relates to a compatibilized rubber composition and a process for compatibilizing polar/nonpolar rubber blends comprising blending compatiblizers such as ethylene/vinyl acetate copolymer, ethylene/methacrylate copolymer EPDM or EP rubber grafted with a polar monomer such as methyl methacrylate.
Claims12
A process for compatibilizing elastomer blends comprising blending:
- 1) polychloroprene;
- 2) a nonpolar elastomer of ethylene-propylene rubber (EP) or ethylene-propylene-diene rubber (EPDM);
- with 0.1 to 60 phr of a compatibilizer having a number average molecular weight in the range of from about 15,000 to 150,000 consisting essentially of the heptane soluble portion of a alkyl methacrylate grafted EP or EPDM, said alkyl group having 1 to 12 carbon atoms.
A process to improve heat aged properties of a chloroprene elastomer blend comprising blending:
- 1) polychloroprene;
- 2) a nonpolar elastomer of ethylene-propylene rubber (EP) or ethylene-propylene-diene rubber (EPDM);
- with 0.1 to 60 phr of a compatibilizer having a number average molecular weight in the range of from about 5,000 to 150,000 consisting essentially of the heptane soluble portion of a alkyl methacrylate grafted EP or EPDM, said alkyl group having 1 to 12 carbon atoms.
Dependencies are inferred from the claim text.