US4144073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable composition for the manufacture of relief printing plates
Assignee: BASF SE
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Filing: 1977-10-06
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Granted: 1979-03-13
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Expires: 1997-10-06
Abstract
Abstract Photopolymerizable compositions for the manufacture of relief printing plates, especially relief plates for making mats, comprising an alcohol-soluble linear polyamide, a photoinitiator and a mixture of (a) a diether or triether obtained from 1 mole of an aliphatic diol or triol and from 2 to 3 moles of N-hydroxymethylacrylamide or N-hydroxymethylmethacrylamide and (b) an unsaturated ester-urethane obtained from 1 mole of toluylene diisocyanate and 2 moles of a hydroxyalkyl acrylate or methacrylate, (a) and (b) being mixed in specific ratios.
Inventors
- 👤 Bernd Bronstert
- 👤 Werner Lenz
- 👤 Heinrich Hartmann
- 👤 Heinz-Ulrich Werther
- 👤 Manfred Zuerger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/04; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
A photopolymerizable composition for the manufacture of letterpress printing plates or relief plates for making mats, which comprises a mixture of: (a) from 37 to 78% by weight of an alcohol-soluble linear polyamide, (b) from 0.01 to 5% by weight of at least one photoinitiator, (c) from 15 to 40% by weight of a diether or triether monomer (M 1 ) of the formula (CH.sub.2 ═CR.sup.1 --CO--NH--CH.sub.2 --O).sub.n R.sup.2 (I) where n is 2 or 3, R 1 is H or CH 3 (and the various R 1 are identical or different), and R 2 is an n-valent aliphatic radical of 2 to 6 carbon atoms, and (d) from 6 to 18% by weight of a monomer (M 2 ) of the formula ##STR4## where R 3 and R 4 are H or CH 3 (and are identical or different), A 1 and A 2 are alkylene of 2 or 3 carbon atoms (and are identical or different) and Z is 2,4-toluylene or 2,6-toluylene, the weight ratio of the monomer M 1 to the monomer M 2 being at least 1.5:1, the above percentages being based on the mixture of polyamide, photoinitiator and monomers.
Claim 2
Dependent Claim
194 words
A photopolymerizable composition for the manufacture of letterpress printing plates or relief plates for making mats, which comprises a mixture of: (a) from 37 to 78% by weight of an alcohol-soluble linear polyamide, (b) from 0.01 to 5% by weight of at least one photoinitiator, (c) from 15 to 40% by weight of a diether or triether monomer (M 1 ) of the formula (CH.sub.2 ═CR.sup.1 --CO--NH--CH.sub.2 --O).sub.n R.sup.2 (I) where n is 2 or 3, R 1 is H or CH 3 (and the various R 1 are identical or different), and R 2 is an n-valent aliphatic radical of 2 to 6 carbon atoms, and (d) from 6 to 18% by weight of a monomer (M 2 ) of the formula ##STR4## where R 3 and R 4 are H or CH 3 (and are identical or different), A 1 and A 2 are alkylene of 2 or 3 carbon atoms (and are identical or different) and Z is 2,4-toluylene or 2,6-toluylene, the weight ratio of the monomer M 1 to the monomer M 2 being at least 1.5:1, the above percentages being based on the mixture of polyamide, photoinitiator and monomers.
Claim 3
Dependent Claim
27 words
A photopolymerizable composition as set forth in claim 1, wherein the amount of monomer M 1 is from 25 to 35% by weight, based on the mixture.
Claim 4
Dependent Claim
27 words
A photopolymerizable composition as set forth in claim 1, wherein the amount of monomer M 2 is from 9 to 15% by weight, based on the mixture.
Claim 5
Dependent Claim
26 words
A photopolymerizable composition as set forth in claim 1, wherein the weight ratio of monomer M 1 to monomer M 2 is from 2:1 to 4:1.
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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |