Self-crosslinking cationic resin emulsions for use in electrodeposition paints
US4176099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1978 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Feb 2, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/901
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous emulsions of binders for cathodically depositable aqueous coating compositions comprising emulsions of 10 to 99.9 percent by weight of a self-crosslinking polycondensation resin or polymerization resin, and 0.1 to 90 percent by weight of one or more basic urethane component which is the reaction product of (A) 1 mole of polyisocyanate with (B) at least 1 mole dialkylalkanolamine and a monohydroxyalkyl(meth)acrylate and/or a monohydroxyalkoxy(meth)acrylate and/or a monohydroxyallylether of a polyol. Component (B) whch optionally can include a saturated and/or unsaturated fatty alcohol or fatty acid will have an NCO-value of substantially zero. The basic content of the emulsion is at least 0.5, and the double bond number is at least 0.5. The emulsions have excellent stability without use of additional emulsifiers and films obtained from coating compositions containing the emulsions have good adhesion characteristics, cure at relatively low temperatures and relatively short curing times to provide films having excellent resistance to water, chemicals, and corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.