In-mold primer coating for thermoplastic substrates
US6720076B2 · kind B2 · utility
8Cited by
11References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Sep 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An in-mold primer coating adapted to be applied in-mold to a thermoplastic substrate and heat cured to form a thermoset surface coating on the molded substrate. The in-mold primer coating comprises a coreactive polymerizable composition comprising an epoxy-acrylate oligomer having a molecular weight from about 350 to about 2500, a hydroxyl functional acrylate or methacrylate, a vinyl aromatic monomer such as styrene, and a small amount of acrylic or methacrylic acid, with the balance being other diacrylate and/or other ethylenically unsaturated monomer(s), if any.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.