Patent US4532021A successfully refreshed from Google Patents.
US4532021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adherent ultraviolet cured coatings
Assignee: Stamicarbon BV
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Filing: 1984-05-07
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Granted: 1985-07-30
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Expires: 2004-05-07
Abstract
Abstract Ultraviolet-curable liquid coating compositions are disclosed in which improved adhesion to metal and plastic surfaces is obtained. This improvement is obtained by using, in admixture: (1) from 10% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of an alpha, beta-monoethylenic monocarboxylic acid in which the alkyl group contains 2-4 carbon atoms; and (2) from 40% to 90% of total resin solids of radiation-curable ethylenically unsaturated liquid. The coating composition includes photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and the components are present in solution in at least about 10% of inert volatile organic solvent.
Inventors
- 👤 Edward J. Murphy
- 👤 Ronald J. Lewarchik
- 👤 Jeffrey W. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:05
CPC Classifications
C; C09; C09D; C09D4/00; C09D4/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
185 words
An ultraviolet-curable liquid coating composition exhibiting improved adhesion to metal and plastic surfaces comprising, in admixture: (1) from 10% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of an alpha,beta-monethylenic monocarboxylic acid in which the alkyl group contains 2-4 carbon atoms, the balance of the copolymer, except for the amine monomer, being constituted by monomers having no reactive group other than the single ethylenic group, at least 40% of said copolymer being copolymerized methyl methacrylate and at least 15% of the copolymer being copolymerized C 2 -C 12 alkyl ester of acrylic or methacrylic acid; and (2) from 40% to 90% of total resin solids of radiation-curable ethylenically unsaturated liquid, said coating composition including photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and said components being present in solution in at least about 25% of inert volatile organic solvent in which the solvent content of said solution contains at least 30% of a C 1 -C 4 alkanol.
Claim 2
Dependent Claim
185 words
An ultraviolet-curable liquid coating composition exhibiting improved adhesion to metal and plastic surfaces comprising, in admixture: (1) from 10% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of an alpha,beta-monethylenic monocarboxylic acid in which the alkyl group contains 2-4 carbon atoms, the balance of the copolymer, except for the amine monomer, being constituted by monomers having no reactive group other than the single ethylenic group, at least 40% of said copolymer being copolymerized methyl methacrylate and at least 15% of the copolymer being copolymerized C 2 -C 12 alkyl ester of acrylic or methacrylic acid; and (2) from 40% to 90% of total resin solids of radiation-curable ethylenically unsaturated liquid, said coating composition including photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and said components being present in solution in at least about 25% of inert volatile organic solvent in which the solvent content of said solution contains at least 30% of a C 1 -C 4 alkanol.
Claim 3
Dependent Claim
27 words
A coating composition as recited in claim 1 in which the solvent content of said solution contains said alkanol in admixture with butyl acetate and a ketone.
Claim 4
Dependent Claim
14 words
A coating composition as recited in claim 2 in which said alkanol is isopropanol.
Claim 5
Dependent Claim
17 words
A coating composition as recited in claim 1 in which said ethylenically unsaturated liquid comprises liquid polyacrylate.
Claim 6
Dependent Claim
15 words
A coating composition as recited in claim 5 in which said liquid polyacrylate is hydroxy-functional.
Claim 7
Dependent Claim
17 words
A coating composition as recited in claim 4 in which said liquid polyacrylate is trimethylol propane diacrylate.
Claim 8
Dependent Claim
16 words
A coating composition as recited in claim 4 in which said liquid polyacrylate is pentaerythritol triacrylate.
Claim 9
Dependent Claim
16 words
A coating composition as recited in claim 1 in which said monocarboxylic acid is acrylic acid.
Claim 10
Dependent Claim
17 words
A coating composition as recited in claim 8 in which said tertiary amine monomer is dimethyl substituted.
Claim 11
Dependent Claim
25 words
A coating composition as recited in claim 8 in which said components (1) and (2) are present in a weight ratio of 40:60 to 60:40.
Claim 12
Dependent Claim
38 words
A coating composition as recited in claim 4 in which said coating composition includes from 3% to 30% of resin solids of monoethylenically unsaturated liquid selected from the group consisting of triallyl cyanurate, N-vinyl pyrrolidone and dimethyl acrylamide.
Claim 13
Dependent Claim
21 words
A coating composition as recited in claim 11 in which from 5% to 20% of said monoethylenically unsaturated liquid is present.
Claim 14
Dependent Claim
17 words
A coating composition as recited in claim 12 in which said monoethylenically unsaturated liquid is N-vinyl pyrrolidone.
Claim 15
Dependent Claim
25 words
A coating composition as recited in claim 11 in which said composition is rendered sensitive to ultraviolet light using a mixture of benzophenone and diethoxyacetophenone.
Claim 16
Dependent Claim
179 words
An ultraviolet-curable liquid coating composition exhibiting improved adhesion to metal and plastic surfaces comprising, in admixture: (1) from 40% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of acrylic acid in which the alkyl group contains 2-4 carbon atoms, the balance of the copolymer, except for the amine monomer, being constituted by monomers having no reactive group other than the single ethylenic group, at least 40% of said copolymer being copolymerized methyl methacrylate and at least 15% of the copolymer being copolymerized C 2 -C 12 alkyl ester of acrylic or methacrylic acid; and (2) from 40% to 60% of total resin solids of radiation-curable ethylenically unsaturated liquid comprising hydroxy-functional polyacrylate liquid, said coating composition including photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and said components being present in solution in from 25% to 50% of inert volatile organic solvent comprising at least 30% of isopropanol in admixture with butyl acetate.
Claim 17
Dependent Claim
179 words
An ultraviolet-curable liquid coating composition exhibiting improved adhesion to metal and plastic surfaces comprising, in admixture: (1) from 40% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of acrylic acid in which the alkyl group contains 2-4 carbon atoms, the balance of the copolymer, except for the amine monomer, being constituted by monomers having no reactive group other than the single ethylenic group, at least 40% of said copolymer being copolymerized methyl methacrylate and at least 15% of the copolymer being copolymerized C 2 -C 12 alkyl ester of acrylic or methacrylic acid; and (2) from 40% to 60% of total resin solids of radiation-curable ethylenically unsaturated liquid comprising hydroxy-functional polyacrylate liquid, said coating composition including photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and said components being present in solution in from 25% to 50% of inert volatile organic solvent comprising at least 30% of isopropanol in admixture with butyl acetate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |