Compatibilization of elastomer blends using ethylene/acrylate/acrylic acid terpolymers
AssigneeExxon Chemical Patents Inc.
InventorPalanisamy Arjunan
Life of this patent
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Abstract
This invention relates to a compatibilized rubber composition and a process for compatibilizing dissimilar rubber blends comprising blending an ethylene/acrylate/acrylic acid terpolymer with 2 or more different rubbers, selected from the group including, but not limited to, EPR, EPDM, CR, NBR, SBR and NR.
Claims14
A process for compatibilizing rubber blends consisting essentially of:
- blending a random terpolymer comprising ethylene, about 4 to about 40 weight % of acrylate or methacrylate, and about 1 to about 10 weight % of acrylic acid or methacrylic acid with nitrile rubber and a second rubber selected from the group consisting of ethylene propylene rubber, styrene butadiene rubber, natural rubber and ethylene propylene diene termonomer rubber ,optionally carbon black, and optionally, a vulcanization system.
A compatibilized rubber blend comprising:
- (A) nitrile rubber;
- (B) ethylene propylene rubber, or ethylene propylene diene terpolymer;
- (C) ethylene/acrylate/acrylic acid random terpolymer comprising ethylene, about 4 to about 40 weight % of acrlyate or methacrylate, and about 1 to about 10 wt. % of acrylic acid or methacrylic acid;
- (D) optionally carbon black;
- (E) optionally a vulcanization system;
- and,
- (F) optionally one or more fillers, lubricants, plasticizers, tackifiers, coloring agents, blowing agents, or antioxidants.
A process for compatibilizing rubber blends consisting essentially of:
- blending a random terpolymer comprising ethylene, about 4 to about 40 weight % of acrylate or methacrylate, and about 1 to about 10 weight % of acrylic acid or methacrylic acid with nitrile rubber and a second rubber selected from the group consisting of ethylene propylene rubber, styrene butadiene rubber, natural rubber, and ethylene propylene diene rubber, carbon black, a vulcanization system and optionally one or more other filler, lubricants, plasticizers, coloring agents, blowing agents or antioxidants.
A composition of matter comprising a random terpolymer comprising ethylene, about 4 to about 40 weight % of acrylate or methacrylate, and about 1 to about 10 weight % of acrylic acid or methacrylic acid;
- nitrile rubber;
- and
- a second rubber selected from the group consisting of ethylene propylene diene termonomer rubber, ethylene propylene rubber, styrene butadiene rubber and natural rubber;
- and
- optionally carbon black;
- and
- optionally a vulcanization system;
- and
- optionally one or more other fillers, lubricants, plasticizers, tackifiers, coloring agents, blowing agents or antioxidants.
Dependencies are inferred from the claim text.