Patent · US Active

Efficient process of vulcanization of nonconjugated conductive polymers including rubbers

US8017694B2 · kind B2 · utility

0Cited by
1References
12Claims
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Inventor

Key dates

Filing dateOct 2, 2008
Grant dateSep 13, 2011
Priority date—
Expiry dateOct 2, 2028

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08J2321/00
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Nonconjugated conductive polymers, which are all polymers that have a ratio of double bonds to total bonds of less than ½ are doped with iodine to produce compositions with unexpected characteristics in this invention. The mechanical and elastomeric properties of a nonconjugated polymer can be enhanced by doping the polymer with an electron acceptor such as iodine, in order to cure the polymer. Among the nonconjugated polymers are the cis-1,4-polyisoprene, cis-1,4 polybutadiene, styrene-butadiene copolymers (SBR), ethylene-propylene-diene monomer and poly (β-pinene). A heated mixture of iodine and sulfur produces a faster rate of vulcanization of rubber than using sulfur alone.

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