Elastomeric compositions comprising hydrocarbon polymer additives
First Claim
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1. An elastomeric composition comprising:
- a) at least one elastomer; and
b) a hydrocarbon polymer additive, wherein the hydrocarbon polymer additive comprises from 70 weight % to 90 weight % piperylene, from 5 weight % to 15 weight % cyclic components, and from 5 weight % to 20 weight % styrenic components;
wherein the hydrocarbon polymer additive is substantially free of amylene or contains less than 10 weight % amylene;
wherein the hydrocarbon polymer additive is substantially free of isoprene; and
wherein the hydrocarbon polymer additive has a Tg of from 48°
C. to 53°
C.
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Abstract
Provided are elastomeric compositions comprising at least one elastomer and a hydrocarbon polymer additive. Preferably the hydrocarbon polymer additive comprises from 60 to 90% piperylene, from 5 to 15% cyclic components, from 5 to 20% styrenic components, up to 5% isoprene, up to 5% indenic components, and up to 10% amylene. Also provided are elastomeric compositions comprising at least one elastomer and a hydrocarbon polymer additive, wherein the hydrocarbon polymer additive has a molecular weight of from 520 to 650 g/mole and a glass transition temperature (Tg) of from 48 to 53° C. The elastomeric compositions are particularly useful in making tires and other cured rubber articles.
27 Citations
17 Claims
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1. An elastomeric composition comprising:
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a) at least one elastomer; and b) a hydrocarbon polymer additive, wherein the hydrocarbon polymer additive comprises from 70 weight % to 90 weight % piperylene, from 5 weight % to 15 weight % cyclic components, and from 5 weight % to 20 weight % styrenic components;
wherein the hydrocarbon polymer additive is substantially free of amylene or contains less than 10 weight % amylene;
wherein the hydrocarbon polymer additive is substantially free of isoprene; and
wherein the hydrocarbon polymer additive has a Tg of from 48°
C. to 53°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cured rubber article comprising an elastomer and a hydrocarbon polymer additive, wherein the hydrocarbon polymer additive comprises from 60 weight % to 90 weight % piperylene, from 5 weight % to 15 weight % cyclic components, and from 5 weight % to 20 weight % styrenic components;
- wherein the hydrocarbon polymer additive is substantially free of amylene;
wherein the hydrocarbon polymer additive is substantially free of isoprene; and
wherein the hydrocarbon polymer additive has a Tg of from 48°
C. to 53°
C. - View Dependent Claims (13, 14, 15)
- wherein the hydrocarbon polymer additive is substantially free of amylene;
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16. A cured elastomeric composition obtained by the process of blending an elastomer with from 5 to 50 phr of at least one hydrocarbon polymer additive, and vulcanizing the blend;
- wherein the at least one hydrocarbon polymer additive comprises from 60 weight % to 90 weight % piperylene, from 5 weight % to 15 weight % cyclic components, and from 5 weight % to 20 weight % styrenic components;
wherein the at least one hydrocarbon polymer additive is substantially free of isoprene, contains less than 10 weight % amylene, and contains less than 5 weight % indenic components; and
wherein the at least one hydrocarbon polymer additive has a Tg of from 48°
C. to 53°
C. - View Dependent Claims (17)
- wherein the at least one hydrocarbon polymer additive comprises from 60 weight % to 90 weight % piperylene, from 5 weight % to 15 weight % cyclic components, and from 5 weight % to 20 weight % styrenic components;
Specification