Hydrophilic fluoropolymer
US9676909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention pertains to a process for the manufacture of a grafted fluoropolymer [polymer (Fg)], said process comprising reacting: A) at least one fluoropolymer comprising at least one functional group selected from the group consisting of a hydroxyl group and a carboxylic acid group [polymer (F)], B) at least one polyoxyalkylene (POA) of formula (I): RB—(CH2—O)x—(CH2CHRAO)n—(CH2—O)x′—RC, wherein at least one of RB and RC is a reactive group comprising at least one heteroatom selected from oxygen and nitrogen different from the hydroxyl group, the remaining, if any, being a —[O]z—CH3 alkyl group, wherein z is 0 or 1, RA is a hydrogen atom or a C1-C5 alkyl group, x and x′, equal to or different from each other, are independently 0 or 1, and n is an integer comprised between 2 and 1000, preferably between 5 and 200, C) optionally, in the presence of at least one catalyst, and D) optionally, in the presence of at least one organic solvent (S). The present invention also pertains to grafted fluoropolymers obtained from said process and to uses of said grafted fluoropolymers for manufacturing porous membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.