US4696876A
Expired / Lapsed
US
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Photopolymerizable composition
Assignee: Polaroid Corp
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Filing: 1986-05-12
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Granted: 1987-09-29
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Expires: 2006-05-12
Abstract
Abstract Novel photopolymerizable compositions are provided which comprise a dye sensitizer, a linear polyethylenimine as a polymerization initiator and a free radical polymerizable ethylenic unsaturated monomer. In the preferred embodiments, the linear polyethylenimine is used in combination with lithium acrylate.
Inventors
- 👤 John J. Cael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:44
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; G03F7/032; G03F7/037; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/127; Y10S430/146
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
32 words
A photopolymerizable composition having an alkaline pH and comprising an ethylenic unsaturated monomer, a dye sensitizer, and a linear polyethylenimine, said dye sensitizer and said linear polyethylenimine providing a photopolymerization initiation system.
Claim 2
Dependent Claim
32 words
A photopolymerizable composition having an alkaline pH and comprising an ethylenic unsaturated monomer, a dye sensitizer, and a linear polyethylenimine, said dye sensitizer and said linear polyethylenimine providing a photopolymerization initiation system.
Claim 3
Dependent Claim
15 words
A photopolymerizable composition as defined in claim 1 wherein said pH is at least 9.
Claim 4
Dependent Claim
15 words
A photopolymerizable composition as defined in claim 1 wherein said dye sensitizer is methylene blue.
Claim 5
Dependent Claim
20 words
A photopolymerizable composition as defined in claim 1 wherein said ethylenic unsaturated monomer is a monovalent salt of acrylic acid.
Claim 6
Dependent Claim
16 words
A photopolymerizable composition as defined in claim 4 wherein said ethylenic unsaturated monomer is lithium acrylate.
Claim 7
Dependent Claim
12 words
A photopolymerizable composition as defined in claim 5 further including poly-N-vinyl pyrrolidone.
Claim 8
Dependent Claim
22 words
A photopolymerizable element comprising a support carrying an alkaline layer comprising lithium acrylate, a linear polyethylenimine, a dye sensitizer and poly-N-vinyl pyrrolidone.
Claim 9
Dependent Claim
22 words
A photopolymerizable element comprising a support carrying an alkaline layer comprising lithium acrylate, a linear polyethylenimine, a dye sensitizer and poly-N-vinyl pyrrolidone.
Claim 10
Dependent Claim
15 words
A photopolymerizable element as defined in claim 7 wherein said dye sensitizer is methylene blue.
Claim 11
Independent Claim
44 words
The method which comprises coating a support with an alkaline layer comprising lithium acrylate, a dye sensitizer, a linear polyethylenimine, and poly-N-vinylpyrrolidone, drying said layer, and storing said coated support in a low humidity environment whereby said lithium acrylate layer is maintained substantially non-photopolymerizable.
Claim 12
Independent Claim
44 words
The method which comprises coating a support with an alkaline layer comprising lithium acrylate, a dye sensitizer, a linear polyethylenimine, and poly-N-vinylpyrrolidone, drying said layer, and storing said coated support in a low humidity environment whereby said lithium acrylate layer is maintained substantially non-photopolymerizable.
Claim 13
Dependent Claim
18 words
The method of claim 9 including the step of humidifying said lithium acrylate layer to render it photosensitive.
Claim 14
Dependent Claim
12 words
The method of claim 9 wherein said dye sensitizer is methylene blue.
Claim 15
Dependent Claim
30 words
The method of claim 10, including the step of imagewise exposing said humidified lithium acrylate layer to radiation effective to initiate photopolymerization and form a photopolymer image in said layer.
Claim 16
Dependent Claim
18 words
The method as defined in claim 9 wherein the coating solution has a pH of at least 9.
Claim 17
Independent Claim
52 words
The method of forming a photopolymer image which comprises imagewise exposing a photopolymerizable alkaline composition comprising an ethylenic unsaturated monomer, a dye sensitizer and a linear polyethylenimine to light absorbed by said dye sensitizer, said dye sensitizer and said linear polyethylenimine providing a photopolymerization system, thereby affecting imagewise photopolymerization of said monomer.
Claim 18
Independent Claim
52 words
The method of forming a photopolymer image which comprises imagewise exposing a photopolymerizable alkaline composition comprising an ethylenic unsaturated monomer, a dye sensitizer and a linear polyethylenimine to light absorbed by said dye sensitizer, said dye sensitizer and said linear polyethylenimine providing a photopolymerization system, thereby affecting imagewise photopolymerization of said monomer.
Claim 19
Dependent Claim
12 words
The method of claim 14 wherein said dye sensitizer is methylene blue.
Claim 20
Dependent Claim
17 words
The method of claim 14 wherein said ethylenic unsaturated monomer is a monovalent salt of acrylic acid.
Claim 21
Dependent Claim
13 words
The method of claim 16 wherein said ethylenic unsaturated monomer is lithium acrylate.
Claim 22
Dependent Claim
12 words
The method of claim 17 wherein said photopolymerizable composition includes poly-N-vinyl pyrrolidone.
Claim 23
Dependent Claim
16 words
The method of claim 18 wherein said photopolymerizable composition is a coated layer on a support.
Claim 24
Dependent Claim
14 words
The method of claim 19 wherein said imagewise exposure is effected by a laser.
Claim 25
Dependent Claim
22 words
The method of claim 14 including the step of uniformly exposing said photopolymerizable composition to white light subsequent to said imagewise exposure.
Claim 26
Dependent Claim
13 words
The method of claim 20 wherein the resulting photopolymer image is a hologram.
Claim 27
Dependent Claim
24 words
The method of claim 14, including the step of stabilizing the resulting photopolymer image by treating it with a solution of a zirconium compound.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
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