Patent · US Expired

Polyestercarbonates and methods for the direct incorporation of acids into polycarbonate chains by SSP

US6365702B1 · kind B1 · utility

3Cited by
5References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 31, 2001
Grant dateApr 2, 2002
Priority date
Expiry dateMay 31, 2021

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G63/80
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A method for preparing a polyestercarbonate copolymer using solid state polymerization and polyestercarbonates prepared thereby is described. The method comprises preparing a mixture comprising partially crystalline bisphenol A polycarbonate oligomer and hydroxy acids, aliphatic diacids, cycloaliphatic diacids, aromatic diacids or aromatic triacids and subjecting that mixture to solid state polymerization to afford a polyestercarbonate copolymer.

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