Patent · US Active

Sulfonated telechelic polycarbonates

US7687595B2 · kind B2 · utility

2Cited by

9References

22Claims

0Family size

Assignee

Sabic Innovative Plastics B.V. · NL

Inventors

Daniel J. Brunelle · Scotia, US
Martino Colonna · Bologna, IT
Maurizio Fiorini · Bologna, IT
Corrado Berti · Lugo, IT
Enrico Binassi · Bologna, IT

Key dates

Filing date	Aug 6, 2007
Grant date	Mar 30, 2010
Priority date	—
Expiry date	Feb 19, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G64/307
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A sulfonated telechelic polycarbonate is described which is produced by melt synthesis. A dihydroxy compound is reacted with a sulfobenzoic acid salt, then with an activated carbonate. The method results in a sulfonated telechelic polycarbonate which has a high percentage of sulfonated end groups, is soluble, and is transparent.

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