Lengthened difunctional perfluoropolyether oils and rubbers prepared therewith
US5677406A · kind A · utility
5Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Oct 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/161
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a difunctional perfluoropolyether oil, prepared by reacting a perfluoropolyether diol oil having a weight average molecular weight (Mw) of 1500 to 3000 with a chain lengthener selected from the group consisting of diacid chlorides and difunctional diisocyanates, and to perfluoropolyether rubbers prepared from these chain-lengthened oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.