Novel polyelectrolyte copolymer and mixed polymers and composites thereof
US5008339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1988 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Jul 8, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A mixed polymer material is formed of a polyelectrolyte ternary copolymer having a hydrophobic backbone and containing 10 to 90 percent unsubstituted portions and the remainder being substituted with hydrophilic groups such as a styrene ternary copolymer of the formula: ##STR1## where R.sup.1 is alkyl, preferably ethyl, and R.sup.5 is hydroxyalkyl, preferably hydroxethyl. The ternary copolymer self-segregates into discrete hydrophilic and hydrophobic domains and is believed to act as a template to segregate the polyelectrolyte into the domains. The mixed polymer has large ion-exchange capacity, very high effective diffusion constants of incorporated counter-ions and prolonged retention of multiply-charged counter-ions. The mixed polymer forms a stable and effective coating for electrodes for electrocatalytic applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.