Perfluorinated organo substituted cyylosiloxanes and copolymers prepared from these cyclosiloxahes
US5914420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compositions of unstrained perfluorinated organo substituted cyclosiloxanes of formula (I): ##STR1## wherein m is an integer of 1 to 12; n is an integer of 1 to 4; X is a divalent radical which may include O, NH, N(CH.sub.3), OC(O), NHC(O), N(CH.sub.3)C(O)CH.sub.2 ; and R.sup.F is a perfluorinated straight chain or branched chain monovalent alkyl radical of 1 to 25 carbon atoms; or R.sup.F is a perfluorinated ether radical of the general formula (II): ##STR2## wherein p is an integer of 1 to 10 are described, along with copolymer compositions prepared from these cyclopolysiloxanes and from mixtures of these cyclosiloxanes and other siloxanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.