US4961960A
Expired / Lapsed
US
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Photo-curable coating compositions
Assignee: Nippon Paint Co Ltd
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Filing: 1984-04-13
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Granted: 1990-10-09
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Expires: 2004-04-13
Abstract
Abstract There is provided a photo-curable coating composition comprising (a) a photo-curable monomer of polymer and (b) a compound having a blocked isocyanate group and at least one ethylenically unsaturated group.
Inventors
- 👤 Tamio Iimure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/6705; C08F; C08F290/00; C08F290/02; C08F290/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/81; C08G18/8141; C08G18/815; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S525/922
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
94 words
A photo-curable coating composition consisting essentially of (a) a photo-curable monomer or polymer having a plurality of ethylenically unsaturated groups in the molecule, and (b) an adduct of a polyisocyanate compound, an isocyanate group-blocking agent and a photo-polymerizable alcohol having at least one ethylenically unsaturated group; said component (a) being free of free or blocked isocyanate groups; wherein the total number of ethylenically unsaturated groups possessed by said components (a) and (b) is at least 4, said composition being photo-curable by activating radiation and subsequently further curable by heat to form a finished film.
Claim 2
Dependent Claim
94 words
A photo-curable coating composition consisting essentially of (a) a photo-curable monomer or polymer having a plurality of ethylenically unsaturated groups in the molecule, and (b) an adduct of a polyisocyanate compound, an isocyanate group-blocking agent and a photo-polymerizable alcohol having at least one ethylenically unsaturated group; said component (a) being free of free or blocked isocyanate groups; wherein the total number of ethylenically unsaturated groups possessed by said components (a) and (b) is at least 4, said composition being photo-curable by activating radiation and subsequently further curable by heat to form a finished film.
Claim 3
Dependent Claim
25 words
The photo-curable coating composition of claim 1 wherein said photo-curable monomer or polymer (a) has at least one hydrogen atom active with respect to isocyanate.
Claim 4
Dependent Claim
33 words
The photo-curable coating composition of claim 1 wherein the ratio of the number of blocked isocyanate group to the number of ethylenically unsaturated group of said component (b) ranges between 0.01 and 10.
Claim 5
Dependent Claim
39 words
The photo-curable coating composition of claim 1 wherein the proportion of said components (a) and (b) is adjusted so that the blocked isocyanate equivalent ranges between 0.02 and 5 per 1,000 g of their mixture on a dry basis.
Claim 6
Dependent Claim
20 words
The photo-curable coating composition of claim 1 further comprising a photo-sensitizer, and a volatile solvent free of active hydrogen atoms.
Claim 7
Dependent Claim
13 words
The photo-curable coating composition of claim 1 which is opaque to activating light.
Claim 8
Dependent Claim
37 words
A composition of claim 1 wherein said polyisocyanate compound is derived from dimethylenediisocyanate, tetramethylenediisocyanate, hexamethylenediisocyanate, dimer acid diisocyanate, isophoronediisocyanate, xylylenediisocyanate, tolylenediisocyanate, polymers of these isocyanate compounds, their condensates with water, or their adducts with trimethylolethane or trimethylolpropane.
Claim 9
Dependent Claim
31 words
A composition of claim 7 wherein said polyisocyanate is blocked by a secondary or tertiary alcohol, an active methylene compound, an oxime, a lactam, a phenol or a heterocyclic hydroxyl compound.
Claim 10
Dependent Claim
35 words
A composition of claim 8 wherein said polymerizable unsaturated alcohol is 2-hydroxyethyl acrylate, hexanediol monoacrylate, glycerol diacrylate, pentaerythritol triacrylate, a methacrylate corresponding to these esters, allyl alcohol, or a bisphenol A epoxy resin/acrylic acid adduct.
Claim 11
Dependent Claim
24 words
A composition of claim 1, wherein component (a) is a bisphenol A epoxy resin/acrylic acid adduct, diallyl phthalate, bis(2-acryloxyethoxyethyl)phthalate, trimethylpropane triacrylate or pentaerythritol tetracrylate.
Claim 12
Dependent Claim
31 words
A composition of claim 8, wherein the isocyanate group blocking agent is isopropanol, tertiary butanol, dialkyl malonate, acetylacetone, alkyl acetoacetate, acetoxime, methyl ethyl ketoxime, cyclohexanone oxime, ε-caprolactam, 3-hydroxy-pyridine, 8-hydroxyquinoline, or 8-hydroxyquinaldine.
Claim 13
Dependent Claim
21 words
A composition of claim 8, wherein the isocyanate group blocking agent is phenol, chlorophenol, cresol, p-tertbutylphenol, p-sec-butylphenol, p-sec-amylphenol, p-octylphenol, or p-nonylphenol.
Claim 14
Dependent Claim
72 words
A method of forming a protective coating on a surface which comprises the steps of applying the photo-curable coating composition of claim 1 on said surface to form a film, exposing the film to the irradiation of light having a wavelength from 200 to 500 nm for a sufficient length of time to cure the film, and heating the film at a temperature above 100° C. for a period over 10 seconds.
Claim 15
Dependent Claim
15 words
A method of claim 13 wherein the photo-curable coating composition of claim 15 is used.
Claim 16
Dependent Claim
71 words
A method of forming a protective coating on a surface comprising the steps of applying the photo-curable coating composition of claim 2 on said surface to form a film, exposing the film to the irradiation of light having a wavelength from 200 to 500 nm for a sufficient length of time to cure the film, and heating the film at a temperature above 100° C. for a period over 10 seconds.
Claim 17
Dependent Claim
71 words
A method of forming a protective coating on a surface comprising the steps of applying the photo-curable coating composition of claim 3 on said surface to form a film, exposing the film to the irradiation of light having a wavelength from 200 to 500 nm for a sufficient length of time to cure the film, and heating the film at a temperature above 100° C. for a period over 10 seconds.
Claim 18
Dependent Claim
71 words
A method of forming a protective coating on a surface comprising the steps of applying the photo-curable coating composition of claim 4 on said surface to form a film, exposing the film to the irradiation of light having a wavelength from 200 to 500 nm for a sufficient length of time to cure the film, and heating the film at a temperature above 100° C. for a period over 10 seconds.
Claim 19
Dependent Claim
71 words
A method of forming a protective coating on a surface comprising the steps of applying the photo-curable coating composition of claim 5 on said surface to form a film, exposing the film to the irradiation of light having a wavelength from 200 to 500 nm for a sufficient length of time to cure the film, and heating the film at a temperature above 100° C. for a period over 10 seconds.
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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) | 1993-10-08 | 1994-04-09 | 1994-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-08 | 1998-04-09 | 1998-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-08 | 2002-04-09 | 2002-10-09 | $7700.00 | Window Closed / Lapsed |