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:
Dec. 07, 2004
Filed:
Oct. 04, 2002
Andrew Lennard Lewis, Surrey, GB;
Richard Paul Redman, Surrey, GB;
Biocompatibles UK Limited, Surrey, GB;
Abstract
A zwitterion containing an adduct having the formula (I) wherein Z is a zwitterionic group; X is an electron withdrawing group selected from the group consisting of carbonyl and sulphone groups, sulphonium and phosphonium salts; R is a difunctional organic group; A is O or NR where R is hydrogen or lower alkyl; R and R are independently selected from hydrogen and C -C alkyl groups; and R is hydrogen or an organic group; R is an organic group, preferably an optionally substituted alkyl group, an organopolysiloxane group, an organosilyl group or an oligo alkoxyalkyl group. The invention additionally provides processes for the production of such an adduct, polymers formed therefrom, coating processes and compositions comprising an adduct or polymers produced therefrom.