Method for making aqueous polyimide electrocoating mixtures
US4065420A · kind A · utility
3Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1975 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Dec 17, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method is provided for making stable electrocoatable polyimide mixtures having a high water content. A solution of polyimide in a dipolar aprotic solvent is heated in the presence of base resulting in a transitory viscosity decrease. Major amounts of water can thereafter be added to the mixture during its reduced viscosity state to produce a stable aqueous mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.