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US4326010A
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Additive in a photopolymerizable composition for reducing its adhesion to a support film
Assignee: EIDP Inc
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Filing: 1979-06-15
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Granted: 1982-04-20
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Expires: 1999-06-15
Abstract
Abstract Polyesters such as polycaprolactone have been found to be useful as an additive in photopolymerizable compositions for reducing adhesion to a support film.
Inventors
- 👤 Richard D. Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:33
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F7/004; G03F7/027; G03F7/032; G03F7/033; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1452; Y10T428/1462; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A method for reducing the adhesion between a support film and a photopolymerizable composition comprising polymeric binder, monomer and photoinitiator by incorporating into said composition an effective amount up to 4% based on the weight of the composition of an aliphatic polyester adhesion reducing agent selected from the group consisting of polyesters of hydroxy monocarboxylic acids or lactones thereof, and polyesters of dicarboxylic acids and diols, having an average molecular weight of 1500 to 40,000.
Claim 2
Independent Claim
75 words
A method for reducing the adhesion between a support film and a photopolymerizable composition comprising polymeric binder, monomer and photoinitiator by incorporating into said composition an effective amount up to 4% based on the weight of the composition of an aliphatic polyester adhesion reducing agent selected from the group consisting of polyesters of hydroxy monocarboxylic acids or lactones thereof, and polyesters of dicarboxylic acids and diols, having an average molecular weight of 1500 to 40,000.
Claim 3
Dependent Claim
20 words
The method of claim 1 in which the polyester contains the repeating unit ##STR3## wherein x is 2 to 8.
Claim 4
Dependent Claim
35 words
The method of claim 1 in which the polyester contains the repeating unit ##STR4## wherein x is 2 to 8 and A is a linear or branched alkylene group containing 2 to 8 carbon atoms.
Claim 5
Dependent Claim
22 words
The method of claim 1 in which the effective amount of polyester is from 0.1 to 3% by weight of the composition.
Claim 6
Dependent Claim
11 words
The method of claim 1 in which the polyester is polycaprolactone.
Claim 7
Dependent Claim
13 words
The method of claim 1 in which the binder is an acrylic polymer.
Claim 8
Dependent Claim
59 words
A photopolymerizable composition comprising polymeric binder, monomer, photoinitiator and an effective amount up to 4% based on the weight of the composition of an aliphatic polyester adhesion reducing agent selected from the group consisting of polyesters of hydroxy monocarboxylic acids, or lactones thereof and polyesters of dicarboxylic acids and diols, having an average molecular weight of 1500 to 40,000.
Claim 9
Dependent Claim
59 words
A photopolymerizable composition comprising polymeric binder, monomer, photoinitiator and an effective amount up to 4% based on the weight of the composition of an aliphatic polyester adhesion reducing agent selected from the group consisting of polyesters of hydroxy monocarboxylic acids, or lactones thereof and polyesters of dicarboxylic acids and diols, having an average molecular weight of 1500 to 40,000.
Claim 10
Dependent Claim
20 words
The composition of claim 7 in which the polyester contains the repeating unit ##STR5## wherein x is 2 to 8.
Claim 11
Dependent Claim
35 words
The composition of claim 7 in which the polyester contains the repeating unit ##STR6## wherein x is 2 to 8 and A is a linear or branched alkylene group containing 2 to 8 carbon atoms.
Claim 12
Dependent Claim
22 words
The composition of claim 7 in which the effective amount of polyester is from 0.1 to 3% by weight of the composition.
Claim 13
Dependent Claim
11 words
The composition of claim 7 in which the polyester is polycaprolactone.
Claim 14
Dependent Claim
13 words
The composition of claim 7 in which the binder is an acrylic polymer.
Claim 15
Dependent Claim
16 words
A photopolymerizable element comprising a layer of the composition of claim 7 on a support film.
Claim 16
Dependent Claim
14 words
The photopolymerizable element of claim 13 in which the support film is poly(ethylene terephthalate).
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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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |