The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1976
Filed:
Apr. 12, 1976
Dean G Laurin, Mount Prospect, IL (US);
Baxter Laboratories, Inc., Deerfield, IL (US);
Abstract
There is disclosed thermoplastic silicone copolymers having polyarylcarbonate and polyarylester constituents covalently bound to a polydiorganosiloxane constituent. The copolymer is produced by reacting a dihydric phenol with a difunctional polydiorgano siloxane, an organo-diacid halide or with alkyl or aryl ester of an organo-diacid, and with phosgene or other suitable carbonate precursors. The reactions are carried out in suitable organic solvents that solubilize the reagents and the resulting copolymer, in the presence of conventional catalysts. In another embodiment a solvent system is eliminated and the condensation polymerization is carried out in a molten system.