Coating system settable by heat
US6313234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/934
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A heat settable, coating system of carboxyl-functional polyester resins, polyfunctional epoxy compounds and/or .beta.-hydroxy alkyl amides, as well as further customary additives, if required. The coating system contains at least one linear carboxyl-functional polyester resin of up to 10 mol-part of isophthalic acid and at least 90 mol-parts of at least a further dicarboxylic acid from the group of aromatic dicarboxylic acids with 8 to 16 C-atoms, aliphatic dicarboxylic acids with 6 to 22 C-atoms and cycloaliphatic dicarboxylic acids with 8 to 16 C-atoms, and at least 90 mol-parts of at least one branched aliphatic diol with 4 to 12 C-atoms, and up to 50 mol-parts of at least one linear aliphatic diol with 2 to 22 C-atoms and/or at least one cycloaliphatic diol with 6 to 16 C-atoms as the binder resin. Also a process for producing thermosetting coating systems of carboxyl-functional polyester resins, wherein binder resin, at least one cross-linking agent from the group of polyfunctional epoxy compounds and .beta.-hydroxy alkyl amides and, if required, further customary additives are mixed into the melt at 90 to 130.degree. C., extruded, removed, granulated, comminuted and screened …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.