US3869292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive compositions and light-sensitive materials such as printing plates
Assignee: Shipley Co Inc
•
Filing: 1973-05-03
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Granted: 1975-03-04
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Expires: 1993-05-03
Abstract
Abstract Mixtures of light-sensitive compounds with vinylphenol resins constitute new light-sensitive compositions which are especially valuable for use as light-sensitive coatings of materials such as printing plates. The resin advantageously is a polymer or copolymer of ortho-vinylphenol, and the light-sensitive compound an aromatic ester or amide of an ortho-naphthoquinone diazide sulfonic or carboxylic acid. Aluminum foil offset plates coated with the compositions give remarkably long printing runs, due to the exceptional wear resistance and good adhesion exhibited by image areas which contain a vinylphenol resin.
Inventors
- 👤 Martinus T J Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:42
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; G03F7/008; G03F7/012; G03F7/022; G03F7/023; G03F7/0233; G03F7/038; G03F7/0381
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A LIGHT-SENSITIVE COMPOSITION FOR GRAPHIC ARTS SUCH AS FOR SENSITIZING PRINTING PLATES, COMPRISING A MIXTURE OF A LIGHTSENSITIVE DIAZO OR AZIDO COMPOUND AND, PER PART OF SAID COMPOUND, ABOUT 0.2 TO 20 PARTS BY WEIGHT OF A VINYL PHENOL RESIN PROUCED BY NORMAL VINYL POLYMERIZATION AND SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND COPOLYMERS OF ORTHO- META-, AND PARA-VINYL PHENOLS AND WHEREIN, WHEN SAID RESIN IS A COPOLYMER, THE COMONOMER OF THE COPOLYMER IS ANOTHER VINYL COMPOUND.
Claim 2
Dependent Claim
78 words
A LIGHT-SENSITIVE COMPOSITION FOR GRAPHIC ARTS SUCH AS FOR SENSITIZING PRINTING PLATES, COMPRISING A MIXTURE OF A LIGHTSENSITIVE DIAZO OR AZIDO COMPOUND AND, PER PART OF SAID COMPOUND, ABOUT 0.2 TO 20 PARTS BY WEIGHT OF A VINYL PHENOL RESIN PROUCED BY NORMAL VINYL POLYMERIZATION AND SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND COPOLYMERS OF ORTHO- META-, AND PARA-VINYL PHENOLS AND WHEREIN, WHEN SAID RESIN IS A COPOLYMER, THE COMONOMER OF THE COPOLYMER IS ANOTHER VINYL COMPOUND.
Claim 3
Dependent Claim
16 words
A light-sensitive composition according to claim 1, said resin being a polymer or copolymer of ortho-vinylphenol.
Claim 4
Dependent Claim
14 words
A light-sensitive composition according to claim 1, said light-sensitive compound being an ortho-quinone diazide.
Claim 5
Dependent Claim
24 words
A light-sensitive composition according to claim 1, said light-sensitive compound being an aromatic ester or amide of an ortho-naphthoquinone diazide sulphonic or carboxylic acid.
Claim 6
Dependent Claim
77 words
A light-sensitive composition for graphic arts such as for sensitizing printing plates, comprising a mixture of a light-sensitive aromatic ester or amide of an ortho-naphtho-quinone diazide sulfonic or carboxylic acid and, per part of said light-sensitive compound, about 0.2 to 20 parts by weight of a vinylphenol resin selected from the group consisting of homopolymers and copolymers of ortho-vinyl phenol and wherein, when said resin is a copolymer, the comonomer of the copolymer is another vinyl compound.
Claim 7
Dependent Claim
77 words
A light-sensitive composition for graphic arts such as for sensitizing printing plates, comprising a mixture of a light-sensitive aromatic ester or amide of an ortho-naphtho-quinone diazide sulfonic or carboxylic acid and, per part of said light-sensitive compound, about 0.2 to 20 parts by weight of a vinylphenol resin selected from the group consisting of homopolymers and copolymers of ortho-vinyl phenol and wherein, when said resin is a copolymer, the comonomer of the copolymer is another vinyl compound.
Claim 8
Dependent Claim
16 words
A light-sensitive printing plate comprising a support coated with a light-sensitive composition according to claim 1.
Claim 9
Dependent Claim
16 words
A light-sensitive printing plate comprising a support coated with a light-sensitive composition according to claim 2.
Claim 10
Dependent Claim
16 words
A light-sensitive printing plate comprising a support coated with a light-sensitive composition according to claim 3.
Claim 11
Dependent Claim
16 words
A light-sensitive printing plate comprising a support coated with a light-sensitive composition according to claim 4.
Claim 12
Dependent Claim
16 words
A light-sensitive printing plate comprising a support coated with a light-sensitive composition according to claim 5.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |