Patent · US Expired

Process for hydrogenation of conjugated diene polymer

US6881797B2 · kind B2 · utility

3Cited by
3References
24Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 21, 2003
Grant dateApr 19, 2005
Priority date—
Expiry dateJun 7, 2023

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08C19/02
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A process for hydrogenation of a conjugated diene polymer. The conjugated diene polymer in an inert organic solvent is brought into contact with hydrogen in the presence of a hydrogenation catalyst composition to selectively hydrogenate the unsaturated double bonds in the conjugated diene units of the conjugated diene polymer. The hydrogenation catalyst composition includes: (I) a titanium compound; (II) a compound represented by formula (II): wherein L is a Group IVB element, R is C1-C12 alkyl or C1-C12 cycloalkyl, X can be the same or different and is C1-C12 alkyl, C1-C12 alkoxy, C1-C12 cycloalkoxy, halogen, or carbonyl; and (III) a trialkylaluminum compound.

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