Patent · US Expired

Organosilane cured butyl rubber/polypropylene TPV

US6147160A · kind A · utility

41Cited by
21References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 30, 1998
Grant dateNov 14, 2000
Priority date—
Expiry dateNov 30, 2018

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08L2312/08
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

An improved process for the preparation of thermoplastic elastomers by hydrosilylation crosslinking of a butyl rubber component, in which a platinum containing hydrosilylation catalyst is used. The butyl rubber component includes a copolymer of at least isobutylene and an aromatic divinyl compound such as divinylbenzene. The copolymer of at least isobutylene and divinylbenzene is significantly easier to crosslink into a substantially insoluble rubber in a thermoplastic vulcanizate than isobutylene copolymers with only unsaturated repeating units from conjugated dienes. A crosslinked rubber component is obtained in the thermoplastic elastomer composition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.