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US 12,252,563 B2Granted
Isobutylene-containing compositions and articles made thereof
AssigneeExxonMobil Engineering & Technology Company
InventorsSunny Jacob, Sujith Nair, Yuan-Ju Chen
Life of this patent
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Abstract
An elastomer composition can comprise a C4 to C7 isoolefin; a non-halogenated alkylstyrene; a halogenated alkylstyrene; and optionally a diolefin, wherein the C4 to C7 isoolefin is not the same as the diolefin. Optionally, the elastomer composition can be blended with a butyl rubber and/or a halobutyl rubber. Such blends that also comprise additives may be suitable for producing tire components such as innerliners.
Claims18
A composition comprising:
- about 70 parts per hundred parts rubber (phr) to about 90 phr of a halobutyl rubber;
- and
- about 10 phr to about 30 phr of an elastomer composition,
- wherein the elastomer composition comprises:
- a C4 to C7 isoolefin;
- a non-halogenated alkylstyrene;
- and
- a halogenated alkylstyrene,
- wherein the non-halogenated alkylstyrene and the halogenated alkylstyrene cumulatively are present in the elastomer composition in the amount of about 3 wt % to about 15 wt % based on the elastomer composition;
- and
- wherein the halogenated alkylstyrene is present at from 0.1 mol % to 2 mol % relative to the non-halogenated alkylstyrene;
- wherein the sum of the phr of the halobutyl rubber and the phr of the elastomer composition is about 100.
9 more elements
Dependencies are inferred from the claim text.