Use of tertiary aminic compounds containing at least three active hydrogens in the preparation of polymers containing perfluoropolyethereal chains
US4849493A · kind A · utility
4Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | May 6, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8054
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Non-fluorinated tertiary aminic compounds, comprising two or more functional groups containing at least three active H, of the hydroxyl or aminic or thiol type, are utilized, in the form of a homogeneous mixture with perfluoropolyethers having hydroxy end groups, to prepare by means of polycondensation and cross-linking reaction with fluorinated or non-fluorinated polyisocyanates, carried out in the absence of catalysts, the corresponding polymers containing the perfluoropolyethereal chain deriving from the perfluoropolyether having hydroxy end groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.