Graft polymer
US8101668B2 · kind B2 · utility
1Cited by
4References
26Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Aug 6, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L51/003
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a novel graft polymer that has excellent proton conductivity, is capable of regulating hydrogen permeability, methanol permeability, and the like, and can serve as a starting material for a polymer electrolyte membrane, which facilitates moisture balance control and efficient operation of a fuel cell. A polymer electrolyte membrane composed of such graft polymer is also provided. This graft polymer comprises a main chain comprising a hydroxyl group-containing polymer and a graft chain comprising a polymer containing a sulfonic acid group-containing monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.