Organosilicone having a carboxyl functional group thereon
US5596061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Apr 12, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A polysiloxane composition is provided having the formula ##STR1## wherein: R.sub.1, can be R.sub.2 or at least one pyrrolidone containing group of the general formula: ##STR2## wherein; R.sub.5 is hydrogen, lower alkyl or alkali metal; F, is linear or branched alkylene of 1-12 carbon atoms; n is 0 or 2; n.sup.1 is 0 or 1; n.sup.2 is 0 or 1; and B is --NR.sub.9, sulfur or oxygen, wherein R, is hydrogen or lower alkyl; with the proviso that when n is 0 and n.sup.2 is 1, n.sup.1 is 1, when n is 2 and n.sup.2 is 1, n.sup.1 is 0 or 1 and when n is 2 and n.sup.2 is 0, n.sup.1 is 0; PA0 R.sub.2 is selected from alkyl, aryl and olefinic (vinyl); PA0 R.sub.3 and R.sub.4, are selected from alkyl, aryl, capped or uncapped polyoxyalkylene, alkaryl, aralkylene or alkenyl; PA0 a is an integer from 0 to 50,000; and PA0 b is an integer from 0 to 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.