US4048379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersion varnish for electrodeposition
Assignee: Mitsubishi Electric Corp
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Filing: 1975-04-24
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Granted: 1977-09-13
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Expires: 1995-04-24
Abstract
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.
Inventors
- 👤 Eiki Jidai
- 👤 Hiroshi Ono
- 👤 Kyoichi Shibayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:22
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/18; C09D133/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
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.
Claim 2
Dependent Claim
80 words
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.
Claim 3
Dependent Claim
39 words
The process of claim 1, wherein the copolymerization reaction is effected by first reacting those monomer components which have a Tg less than room temperature and then reacting those components having a Tg at least equal to room temperature.
Claim 4
Dependent Claim
13 words
The process of claim 1, wherein all ingredients are reacted in one step.
Claim 5
Dependent Claim
64 words
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.
Claim 6
Dependent Claim
64 words
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.
Claim 7
Dependent Claim
79 words
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.
Claim 8
Dependent Claim
79 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |