Aqueous Thermosetting Acrylic Enamel Containing Metallic Flake Pigment
Abstract
Abstract The aqueous thermosetting acrylic coating composition contains 0.25-1% by weight of uniformly dispersed metallic flake pigments and has the following film-forming constituents: 1. AN ACRYLIC POLYMER OF STYRENE AND/OR METHYL METHACRYLATE, AN ALKYL ACRYLATE OR AN ALKYL METHACRYLATE OTHER THAN METHYL METHACRYLATE, A HYDROXY ALKYL ACRYLATE OR A HYDROXY ALKYL METHACRYLATE AND AN Alpha , Beta -UNSATURATED CARBOXYLIC ACID WHEREIN THE POLYMER HAS AN ACID NUMBER OF 35-150 AND A CARBOXYL/HYDROXYL RATIO OF 1:0.2 TO 1:1.8; AND 2. A WATER-SOLUBLE OR WATER-DISPERSIBLE ALKYLATED MELAMINE FORMALDEHYDE RESIN; THE IMPROVEMENT USED WITH THIS COATING COMPOSITION COMPRISES 0.5-5% BY WEIGHT, BASED ON THE WEIGHT OF THE FILM-FORMING CONSTITUENTS, OF AN ACRYLIC COPOLYMER OF 75-95% BY WEIGHT OF AN ALKYL ACRYLATE HAVING 1-8 CARBON ATOMS IN THE ALKYL GROUP AND 5-25% BY WEIGHT OF ACRYLIC ACID OR METHACRYLIC ACID AND HAS A WEIGHT AVERAGE MOLECULAR WEIGHT OF 2,500 TO 45,000; THE NOVEL COATING COMPOSITION IS USEFUL AS AN EXTERIOR FINISH FOR AUTOMOBILE AND TRUCK BODIES.
Inventors
- 👤 Carlo James Di
Bibliographic Details
Claims Analysis
Total Claims: 8References Cited (Backward Citations)
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