Water-dispersion varnish for electrodeposition
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsEiki Jidai, Hiroshi Ono, Kyoichi Shibayama
Life of this patent
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Abstract
Acrylonitrile, an acrylic ester such as ethyl acrylate, n-propyl acrylate, n-butyl acrylate, isopropyl acrylate, n-hexyl acrylate and the like are copolymerized with a cross-linkable monomer, an unsaturated organic acid and a vinyl monomer in a one-step or two-step operation to prepare a water-dispersion varnish for electrodeposition which has excellent dispersion stability and gives a coated film having excellent scrape abrasion resistance and high cut-through temperature.
Claims5
A process for preparing a water-dispersible varnish which can be used for electrodeposition, which consists essentially of:
- copolymerizing from 30-65 weight percent acrylonitrite;
- from 5-30 weight percent of ethyl acrylate, n-propyl acrylate, n-butyl acrylate, isopropyl acrylate or n-hexyl acrylate;
- from 2-10 weight percent of glycidyl methacrylate, n-methylol acrylamide, allyl glycidyl ether, methacrylamide or acrylamide, from 2-8 weight percent of acrylic acid, methacrylate acid or maleic anhydride and from 15-35 weight percent of styrene, methyl methacrylate, alpha-methyl styrene or vinyl acetate.
A water-dispersion varnish which is prepared by copolymerization of 30-65 weight percent acrylonitrile;
- 5-30 weight percent of ethyl acrylate, n-propyl acrylate, n-butyl acrylate, isopropyl acrylate or n-hexyl acrylate;
- 2-10 weight percent of glycidyl methacrylate, n-methylol acrylamide, allyl glycidyl ether, methacrylamide or acrylamide;
- 2-8 weight percent acrylic acid, methacrylic acid or maleic anhydride;
- and 15-35 weight percent of styrene, methyl methacrylate, alpha-methylstyrene or vinyl acetate.
A coated product having high scrape abrasion resistance and a high cut-through temperature, wherein the coating, comprises:
- a resin prepared by copolymerizing 30-65 weight percent of acrylonitrile;
- 5-30 weight percent of ethyl acrylate, n-propyl acrylate, n-butyl acrylate, isopropyl acrylate or n-hexyl acrylate;
- 2-10 weight percent of glycidyl methacrylate, n-methylol acrylamide, allyl glycidyl ether, methacrylamide or acrylamide, 2-8 weight percent of acrylic acid, methacrylic acid or maleic anhydride and 15-35 weight percent of styrene, methyl methacrylate, alpha-methylstyrene or vinyl acetate.
Dependencies are inferred from the claim text.