US4247621A
Expired / Lapsed
US
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Original pattern plate obtained by use of photo-sensitive resin composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1976-03-26
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Granted: 1981-01-27
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Expires: 1996-03-26
Abstract
Abstract An original pattern plate obtained by the use of a photo-sensitive resin composition comprising: (A) an unsaturated polyester having an acid value of from 10 to 40 and having not less than 50% by mole of unsaturated acids in the acid component, (B) a photo-polymerizable, ethylenically unsaturated compound which essentially contains a compound having a photo-polymerizable, ethylenically unsaturated linkage and at least one hydroxyl group, (C) a melamine compound of the formula: (C.sub.3 H.sub.6-(m+n) N.sub.6)(CH.sub.2 OH).sub.m (CH.sub.2 OR).sub.n wherein R is an alkyl group having 1 to 4 carbon atoms, m is from 0 to 6, n is from 0 to 6 and m+n is from 1.5 to 6, or its condensate having an average condensation degree of not more than 4, (D) a photo-polymerization initiator, and (E) a thermal polymerization inhibitor, the weight proportion of the components (A), (B) and (C) satisfying the relationships of the following equations: 1/5≦B/(A+B)≦3/5 and 1/50≦C/(A+B+C)≦1/5, which is improved in mechanical strength, particularly in resistance to heat and pressure.
Inventors
- 👤 Takezo Sano
- 👤 Tadanori Inoue
- 👤 Yukikazu Uemura
- 👤 Akihiro Furuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:07
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; C; C08; C08L; C08L67/00; C08L67/06; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/118; Y10S430/12; Y10S430/121
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
197 words
A process for preparing an original pattern plate which comprises exposing a photo-sensitive resin plate comprising a support material and a layer of a photo-sensitive resin composition consisting essentially of: (A) an unsaturated polyester having an acid value of from 10 to 40 and having not less than 50% by mole of unsaturated acids in the acid component; (B) a photo-polymerizable, ethylenically unsaturated compound which essentially contains a compound having a photo-polymerizable, ethylenically unsaturated linkage and at least one hydroxyl group; (C) a melamine compound of the formula: (C.sub.3 H.sub.6-(m+n) N.sub.6) (CH.sub.2 OH).sub.m (CH.sub.2 OR).sub.n wherein R is an alkyl group having 1 to 4 carbon atoms, m is from 0 to 6, n is from 0 to 6, and m+n is from 1.5 to 6, or its condensate having an average condensation degree of not more than 4; (D) a photo-polymerization initiator; and (E) a thermal polymerization inhibitor, the weight proportions of the components (A), (B), and (C) satisfying the relationships of the following equations: 1/5≦B/(A+B)≦3/5 and 1/50≦C/(A+B+C)≦1/5, to actinic light through a negative, removing the non-exposed part therefrom to develop an image, followed by keeping the resultant plate at a temperature under which heat-hardening proceeds.
Claim 2
Dependent Claim
197 words
A process for preparing an original pattern plate which comprises exposing a photo-sensitive resin plate comprising a support material and a layer of a photo-sensitive resin composition consisting essentially of: (A) an unsaturated polyester having an acid value of from 10 to 40 and having not less than 50% by mole of unsaturated acids in the acid component; (B) a photo-polymerizable, ethylenically unsaturated compound which essentially contains a compound having a photo-polymerizable, ethylenically unsaturated linkage and at least one hydroxyl group; (C) a melamine compound of the formula: (C.sub.3 H.sub.6-(m+n) N.sub.6) (CH.sub.2 OH).sub.m (CH.sub.2 OR).sub.n wherein R is an alkyl group having 1 to 4 carbon atoms, m is from 0 to 6, n is from 0 to 6, and m+n is from 1.5 to 6, or its condensate having an average condensation degree of not more than 4; (D) a photo-polymerization initiator; and (E) a thermal polymerization inhibitor, the weight proportions of the components (A), (B), and (C) satisfying the relationships of the following equations: 1/5≦B/(A+B)≦3/5 and 1/50≦C/(A+B+C)≦1/5, to actinic light through a negative, removing the non-exposed part therefrom to develop an image, followed by keeping the resultant plate at a temperature under which heat-hardening proceeds.
Claim 3
Dependent Claim
29 words
The process according to claim 1, wherein the unsaturated polyester is the one obtained by condensation of an unsaturated dicarboxylic acid, a saturated dicarboxylic acid and a polyhydric alcohol.
Claim 4
Dependent Claim
24 words
The process according to claim 2, wherein the molar ratio of the unsaturated dicarboxylic acid to the saturated dicarboxylic acid is 1 or more.
Claim 5
Dependent Claim
33 words
The process according to claim 2, wherein the unsaturated dicarboxylic acid is at least one selected from the group consisting of maleic acid, fumaric acid, itaconic acid and citraconic acid, and their anhydrides.
Claim 6
Dependent Claim
39 words
The process according to claim 2, wherein the saturated dicarboxylic acid is at least one selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, succinic acid, adipic acid, norbornanedicarboxylic acid and tetrahydrophthalic acid, and their anhydrides.
Claim 7
Dependent Claim
66 words
The process according to claim 2, wherein the polyhydric alcohol is a compound of the formula: ##STR3## wherein R' is hydrogen or methyl, and k is an integer of 1 to 10, a compound of the formula: HO--CH 2 ) l OH wherein l is an integer of 1 to 5, neopentyl glycol, bishydroxyethyl terephthalate, cyclohexane dimethanol, hydrogenated bisphenol A, glycerol or pentaerythritol, or their mixtures.
Claim 8
Dependent Claim
27 words
The process according to claim 6, wherein the polyhydric alcohol is ##STR4## wherein R' is hydrogen or methyl and k is an integer of 2 to 4.
Claim 9
Dependent Claim
74 words
The process according to claim 1, wherein the compound having a photo-polymerizable, ethylenically unsaturated linkage and at least one hydroxyl group is at least one selected from the group consisting of 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, glycerol monoacrylate, glycerol diacrylate, pentaerythritol monoacrylate, pentaerythritol diacrylate, pentaerythritol tiracrylate, diethylene glycol monoacrylate, triethylene glycol monoacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, glycerol monomethacrylate, glycerol dimethacrylate, pentaerythritol monomethyacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethyacrylate, diethylene glycol monomethacrylate, triethylene glycol monomethacrylate and methylolacrylic amide.
Claim 10
Dependent Claim
14 words
The process according to claim 1, wherein the melamine compound is hexamethoxymethylmelamine or hexabutoxymethylmelamine.
Claim 11
Dependent Claim
11 words
An original pattern plate prepared by the process of claim 1.
Claim 12
Dependent Claim
18 words
The process according to claim 1, wherein the unsaturated polyester has an acid value of 10 to 40.
References Cited (Backward Citations)
US2760863A
Cited
US3595664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |