Solid polymeric electrolytes for electrochromic devices having reduced acidity and high anodic stability
US5327281A · kind A · utility
39Cited by
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10Claims
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Key dates
| Filing date | Apr 23, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Apr 23, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1525
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Polymer electrolytes comprising co-polymers of vinylic, protonic acids and N,N' dialkyl substituted acrylamides and methacrylamides with high anodic stability, reduced acidity and high mechanical stiffness suitable for electrochromic devices, such as windows, mirrors and information displays. A preferred embodiment of the invention is a co-polymer with a composition of 30% 2-acrylamido-2-methyl propane sulfonic acid, 50% N,N dimethyl acrylamide and 20% water by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.