Hydroxyalkyl carbamate-containing resins for cathodic electrodeposition and method of making the same
US4484994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1984 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Feb 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D163/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cathodically electrodepositable, self-cross-linkable polymer is a hydroxyalkyl carbamate-containing resin having at least one tertiary amine and at least two hydroxyalkyl carbamate groups per molecule. The polymer is made by reacting an epoxy resin having an average epoxy equivalent weight of from about 300 to about 10,000 with one or more amines having at least one secondary amine group and at least one hydroxyalkyl carbamate group or precursor thereof. Hydrophobic amines may be co-reacted to enhance hydrophobicity of the polymer. An electrodeposition bath is made by acidifying the polymer to form an aqueous dispersion. A low temperature-curable coating is attained by utilization of the polymer with a suitable quaternary or ternary compound catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.