Compatibilization of dissimilar elastomer blends using ethylene/acrylate/acrylic acid terpolymers
AssigneeExxon Chemical Patents Inc.
InventorsPalanisamy Arjunan, Roma B. Kusznir
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.
Claims15
A process for compatibilizing elastomer blends consisting essentially of
- blending a random terpolymer comprising ethylene
- and about 4 to 40 weight % acrylate or methacrylate and about 1 to 10 weight % acrylic acid or methacrylic acid with an elastomer blend comprising at least one first elastomer selected from the group consisting of ethylene-propylene rubber, styrene-butadiene rubber, natural rubber and ethylene-propylene-diene rubber, and at least one second elastomer selected from the group consisting of neoprene rubber and nitrile rubber optionally, carbon black, and optionally, a vulcanization system.
A composition of matter consisting essentially of:
- a random terpolymer comprising ethylene and about 4 to 40 weight % acrylate or methacrylate and about 1 to 10 weight % acrylic acid or methacrylic acid,
- an elastomer blend comprising at least one first elastomer selected from the group consisting of ethylene-propylene rubber, styrene-butadiene rubber, natural rubber and ethylene-propylene-diene rubber, and at least one second elastomer selected from the group consisting of neoprene rubber and nitrile rubber;
- optionally, carbon black, and
- optionally, a vulcanization system.
A composition of matter consisting essentially of a blend of a random terpolymer comprising ethylene and about 4 to 40 weight % acrylate or methacrylate and about 1 to 10 weight % acrylic acid or methacrylic acid,
- an elastomer blend comprising at least one first elastomer selected from the group consisting of ethylene-propylene rubber, styrene-butadiene rubber, natural rubber and ethylene-propylene-diene rubber, ad at least one second elastomer selected from the group consisting of neoprene rubber and nitrile rubber,,
- carbon black,
- a vulcanization system and one or more of other fillers, lubricants, plasticizers, tackifiers, coloring agents, blowing agents or antioxidants.
The composition of claim 9 or 10 where the first elastomer is selected from the group consisting of ethylene-propylene rubber and ethylene propylene-diene rubber.
A compatibilized elastomer blend consisting essentially of:
- (A) polychloroprene;
- (B) ethylene-propylene rubber, or ethylene propylene-diene rubber;
- (C) a random terpolymer comprising ethylene and about 4 to 40 weight % acrylate or methacrylate and about 1 to 10 weight % acrylic acid or methacrylic acid;
- (D) optionally carbon black,
- (E) optionally a vulcanization system;
- and
- (F) optionally one or more of other fillers, lubricants, plasticizers, tackifiers, coloring agents, blowing agents or antioxidants.
Dependencies are inferred from the claim text.