Patent · US Expired

Polycarbonate resin compositions with improved transparency

US3945979A · kind A · utility

7Cited by
3References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 5, 1974
Grant dateMar 23, 1976
Priority date—
Expiry dateDec 5, 1994

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08K5/0041
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Compositions comprising a polycarbonate resin and a mixture of anthraquinone series colorants have excellent transparency.

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