Electrocoating process using shear stable cationic latex
US4608139A · kind A · utility
29Cited by
1References
8Claims
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Key dates
| Filing date | Jun 21, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Jun 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Cationic electrocoat latices, containing blocked isocyanate crosslinker and which are usually unstable toward pumping and shear forces, can be stabilized by conducting the emulsion polymerization in a solvent-water mixture containing from about 20 to 30 percent solvent. Ethanol is a preferred solvent. Preferably the crosslinker is first emulsified and then added to the emulsion polymerization system prior to or during polymerization to produce mechanically stable latex that is virtually free of grit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.