US4233395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable transfer material
Assignee: Hoechst AG
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Filing: 1979-01-17
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Granted: 1980-11-11
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Expires: 1999-01-17
Abstract
Abstract This invention relates to an improvement in a photopolymerizable transfer material comprising a flexible base, and a thermoplastic photopolymerizable copying layer, the improvement comprising including an adhesion-imparting substance at the boundary of said copying layer away from said base, said substance having the formula <IMAGE> in which n is 0 or an integer from 1 to 3, R1 is H or OH, R2 is H or COOR3, and R3 is an alkyl group having about 1 or 25 carbon atoms.
Inventors
- 👤 Kurt Klupfel
- 👤 Heide Sprengel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:55
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/389; G; G03; G03F; G03F7/00; G03F7/004; G03F7/085; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/155
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
161 words
In a photopolymerizable transfer material comprising a flexible base, and a thermoplastic photopolymerizable copying layer, said layer comprising (a) a thermoplastic polymeric binder, (b) a photopolymerizable acrylic or methacrylic ester which boils at a temperature of at least 100° C. and which contains at least one terminal, ethylenically unsaturated group, and (c) a photoinitiator activatable by actinic radiation, weight, based on the weight of the non-volatile components of the layer, of an adhesion-imparting substance effective to improve adhesion to copper or copper-alloys evenly distributed in the photopolymerizable copying layer and/or havng said adhesion-imparting substance in a separate, homogeneous, coherent layer on top of said copying layer on the opposite side of said flexible base, said adhesion-imparting substance having the formula ##STR4## in which n is 0 or an integer from 1 to 3, R 1 is H or OH, R 2 is H or COOR 3 , and R 3 is an alkyl group having from 1 to 25 carbon atoms.
Claim 2
Dependent Claim
161 words
In a photopolymerizable transfer material comprising a flexible base, and a thermoplastic photopolymerizable copying layer, said layer comprising (a) a thermoplastic polymeric binder, (b) a photopolymerizable acrylic or methacrylic ester which boils at a temperature of at least 100° C. and which contains at least one terminal, ethylenically unsaturated group, and (c) a photoinitiator activatable by actinic radiation, weight, based on the weight of the non-volatile components of the layer, of an adhesion-imparting substance effective to improve adhesion to copper or copper-alloys evenly distributed in the photopolymerizable copying layer and/or havng said adhesion-imparting substance in a separate, homogeneous, coherent layer on top of said copying layer on the opposite side of said flexible base, said adhesion-imparting substance having the formula ##STR4## in which n is 0 or an integer from 1 to 3, R 1 is H or OH, R 2 is H or COOR 3 , and R 3 is an alkyl group having from 1 to 25 carbon atoms.
Claim 3
Dependent Claim
24 words
A photopolymerizable transfer material according to claim 1 including a peelable protective coating on the side of the copying layer away from the base.
Claim 4
Dependent Claim
25 words
A photopolymerizable transfer material according to claim 1 in which the copying layer contains a polymeric binder which is soluble or swellable in aqueous-alkaline solutions.
Claim 5
Dependent Claim
22 words
A photopolymerizable transfer material according to claim 1 in which the copying layer is in the form of a dry, pre-fabricated layer.
Claim 6
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 2-mercapto-acetic acid-1-ethyl-hexyl-ester.
Claim 7
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 2-mercapto-acetic acid-n-octylester.
Claim 8
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 2-mercapto-acetic acid-isooctylester.
Claim 9
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 2-mercapto-acetic acid-decylester.
Claim 10
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 2-mercapto-acetic acid-octadecylester.
Claim 11
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 3-mercapto-propionic acid-methylester.
Claim 12
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 3-mercapto-propionic acid-dodecylester.
Claim 13
Dependent Claim
16 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 3-mercapto-propionic acid-octadecylester.
Claim 14
Dependent Claim
15 words
A photopolymerizable transfer material according to claim 1 in which the adhesion-imparting substance is 3-mercapto-propane-diol-(1,2).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |