Patent · US Expired

Cycloolefin copolymer resins having improved optical properties

US6951898B2 · kind B2 · utility

7Cited by
4References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 10, 2001
Grant dateOct 4, 2005
Priority date—
Expiry dateApr 23, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08K5/103
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A cycloolefin copolymer resin having a Hunter b color value of less than 1.0, which resin comprises:

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