Heat-curable resin compositions for powder paints
US4087479A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Aug 27, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31511
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A heat-curable resin composition obtained by mixing (A) a polyester resulting from the depolymerization of a polyester of a high degree of polymerization comprising an aromatic dicarboxylic acid and an aliphatic dialcohol using a compound containing about 2 to about 12 carboxyl groups per molecule with (B) a polyoxirane compound containing about 2 to about 100 oxirane groups per molecule. A heat-curable resin composition obtained by adding to the above resin composition a salt formed between an aliphatic monocarboxylic acid containing 2 to 20 carbon atoms and an element of Group II of the Periodic Table as a curing accelerator is an especially superior material for powder paints. Powder paints prepared from these heat-curable resin compositions provide coatings having superior appearance and properties upon baking after coating by a method such as an electrostatic spray coating method or a fluidized dip coating method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.