Elastomeric copolymers, copolymer compositions, and their use in articles

A technology of copolymers and polymers, applied in the field of elastomer copolymers, can solve problems such as the influence of other properties of polymers

Inactive Publication Date: 2012-07-11
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when different components are introduced and / or blended with isoolefin-based polymers, other properties of the polymers may be negatively affected, and the presumed tendencies in terms of impermeability and blending properties are not always demonstrated. in this way

Method used

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  • Elastomeric copolymers, copolymer compositions, and their use in articles
  • Elastomeric copolymers, copolymer compositions, and their use in articles
  • Elastomeric copolymers, copolymer compositions, and their use in articles

Examples

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Embodiment approach

[0149] A. A copolymer of an isoolefin having 4 to 7 carbon atoms and an alkylstyrene having a substantially uniform composition distribution and comprising from about 8 to about 12% by weight of an alkylstyrene and from about 1.1 to about 1.5 wt% halogen and wherein said copolymer has a Mw / Mn ratio of less than about 6;

[0150] B. The copolymer of embodiment A, wherein the halogen is selected from chlorine or bromine;

[0151] C. The copolymer of embodiment A or B, wherein said alkylstyrene is p-methylstyrene and said isoolefin comprises isobutylene;

[0152] D. The copolymer of any of the above embodiments A-C, wherein the alkylstyrene is functionalized with a halogen, and up to 25 mole % of the alkylstyrene is so functionalized;

[0153] E. The copolymer of embodiment D, wherein 10-25 mol % of said alkylstyrene is halogen functionalized;

[0154] F. The copolymer of any of the preceding embodiments A-E, wherein said copolymer is blended with a second polymer to form a com...

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Abstract

A copolymer is formed from an isoolefine having from 4 to 7 carbon atoms and an alkylstyrene. The copolymer has a substantially homogeneous compositional distribution. The copolymer has from about 8 to about 12 wt% of alkylstyrene and at least 85 wt% of isoolefine. The copolymer is preferably halogenated with about 1.1 to about 1.5 wt% of a halogen. The copolymer may in elastomeric nanocomposites. To obtain a good dispersion of the nanoclay in a formulated compound, at least one cure accelerator is selected from the group consisting of mercaptobenzothiazole disulfide, mercaptobenzothiazole, cyclohexyl benzothiazole disulfide, dibutyl thiourea, tetramethylthiuram disulfide, 4-4- dithiodimropholine, zinc dimethyldithiocarbamate, and zinc dibutylphosphorodithiate.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of prior US Provisional Application Serial No. 61 / 241,280, filed September 10, 2009, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to elastomeric copolymers, compositions comprising said elastomeric compositions and the use of said copolymers in articles. More specifically, the present invention relates to halogenated C4-C7 isoolefin-based copolymers having improved performance properties and blending characteristics. Background technique [0004] The adoption of new technology polymers and compounds by the tire and rubber industry has resulted in many product performance improvements. For example, in the 1970s, new technology carbon blacks for tire treads produced improvements in treadwear. In the 1980s, using SiCl 4 and TiCl 4 The spread of coupled rubber has resulted in reduced tire rolling resistance and impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08K9/04C08L23/22
CPCC08K9/04C08K3/346C08L23/22C08L23/02C08L2666/06
Inventor M·B·罗德格尔斯翁卫青J·P·索森R·N·韦布S·雅格布
Owner EXXONMOBIL CHEM PAT INC
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