Patent · US Expired

Methods for producing and purifying 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers and polycarbonates derived therefrom

US7408016B2 · kind B2 · utility

11Cited by

13References

26Claims

0Family size

Assignee

Sabic Innovative Plastics B.V. · NL

Inventors

Gautam Chatterjee · Bengaluru, IN
Anantharaman Dhanabalan · Bengaluru, IN
Katherine Glasgow · Wake Forest, US
Vinod Kumar Rai · Bengaluru, IN
Suresh Shanmugam · Bengaluru, IN
Veeraraghavan Srinivasan · Bengaluru, IN

Key dates

Filing date	Oct 31, 2005
Grant date	Aug 5, 2008
Priority date	—
Expiry date	Mar 24, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L69/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A composition comprising a polycarbonate, wherein the polycarbonate has a weight average molecular weight of greater than 15,000, comprises more than 15 mole percent structural units derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimide:

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