US4332857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer composition and a method for treating a plastics substrate using the same
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1980-02-04
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Granted: 1982-06-01
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Expires: 2000-02-04
Abstract
Abstract A primer composition is prepared by dissolving in an organic solvent one or more diacryloyloxy compounds of the formula: ##STR1## (wherein X is a hydrogen or methyl group; Y is a linear or branched-alkylene group having less than 8 carbon atoms or a binding group selected from the group consisting of ##STR2## n is an integer of from 1 to less than 10). Such primer composition is used as an adhesive inner layer to bond a top-coating finish to a plastic substrate.
Inventors
- 👤 Susumu Taniyama
- 👤 Goro Shimaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:25
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/046; C08J7/12; C08J7/16; C08J2369/00; C08J2433/00; C08J2433/04; C08J2433/06; C08J2433/10; C08J2433/12; C08J2483/00; C08J2483/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A method for treating a plastic substrate which comprises coating a plastic substrate with the primer composition prepared by dissolving in an organic solvent one or more diacryloyloxy compounds of the formula: ##STR5## (wherein X is a hydrogen or methyl group; Y is a linear or branched-alkylene group having less than 8 carbon atoms or a binding group selected from the group consisting of ##STR6## n is an integer of from 1 to less than 10), drying the primer-coated plastic substrate to provide a dry primer coating consisting essentially of said one or more diacryloyloxy compounds, coating the dry primer-coated substrate with a curable resin-containing top-coating finish and curing the finish.
Claim 2
Independent Claim
111 words
A method for treating a plastic substrate which comprises coating a plastic substrate with the primer composition prepared by dissolving in an organic solvent one or more diacryloyloxy compounds of the formula: ##STR5## (wherein X is a hydrogen or methyl group; Y is a linear or branched-alkylene group having less than 8 carbon atoms or a binding group selected from the group consisting of ##STR6## n is an integer of from 1 to less than 10), drying the primer-coated plastic substrate to provide a dry primer coating consisting essentially of said one or more diacryloyloxy compounds, coating the dry primer-coated substrate with a curable resin-containing top-coating finish and curing the finish.
Claim 3
Dependent Claim
25 words
A method of claim 1 in which the organic solvent is at least one member selected from the group consisting of alcohols, ethers and ketones.
Claim 4
Dependent Claim
25 words
A method of claim 1 in which 0.1 to 50% of diacryloyloxy compound based on the weight of the composition is dissolved in the solvent.
Claim 5
Dependent Claim
23 words
A method of claim 1 in which the diacryloyloxy compound is prepared by bisphenol A with epihalohydrin and acrylic acid or methacrylic acid.
Claim 6
Dependent Claim
19 words
A method of claim 1 in which the primer-coated plastic substrate is dried at a temperature of 80°-130° C.
Claim 7
Dependent Claim
21 words
A method of claim 1 in which the plastic substrate is a polycarbonate and the organic solvent is the ethyleneglycol monoalkylether.
Claim 8
Dependent Claim
36 words
A transparent product obtained by the process of claim 1 comprising a polycarbonate or polymethyl methacrylate substrate coated with said primer and wherein said primer is coated with said top-coating finish which comprises an organoalkoxysilane compound.
Claim 9
Dependent Claim
15 words
A method of claim 1 in which the plastics substrate is a transparent plastic substrate.
Claim 10
Dependent Claim
17 words
A method of claim 8 in which the transparent plastic is a polycarbonate or a polymethyl methacrylate.
Claim 11
Dependent Claim
25 words
A method of claim 1 in which the primer-coated plastic substrate is dried at a temperature within the range of from 30° to 150° C.
Claim 12
Dependent Claim
17 words
A method of claim 1 in which the curable resin-containing top-coating finish is an organoalkoxysilane compound-containing lacquer.
References Cited (Backward Citations)
US3707397A
Cited
US3935346A
Cited
US4199421A
Cited
GB2018619A
Cited
WO1980000942A1
Cited
US4210699A
Cited
US4197335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |