Patent EP0081280B1 successfully refreshed from Google Patents.
EP0081280B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photopolymerisable materials for use in producing stencils for screen printing
Assignee: Sericol Ltd
•
Filing: 1982-09-16
•
Granted: 1985-12-11
•
Expires: 2002-09-16
Abstract
No abstract record available.
Inventors
- 👤 John Robert Curtis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:31
CPC Classifications
C; C07; C07D; C07D335/00; C07D335/04; C07D335/10; C07D335/12; C07D335/14; C07D335/16; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; G03F7/12; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/122; Y10S430/123
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
127 words
An aqueous photopolymerisable composition comprising one or more terminally ethylenically unsaturated monomers, which are dispersible, miscible or soluble in water, one or more tertiary nitrogen-containing compounds optionally containing terminal ethylenic unsaturation as accelerators, a water-soluble colloid, and a water-soluble photoinitiator of the formula: where R' is halogen, alkyl, alkoxy, alkylthio, nitro, amino, alkylamino, dialkylamino, hydroxyalkylamino, alkanoylamino, benzoylamino, N-alkanoyl-N-benzoylamino, sulphonamido or acetyl, R 2 is alkylene of 1 to 4 carbon atoms, n is 0, 1 or 2, m is 1 or 2, and A is-COOH,-S0 3 H,-OS0 3 H, or-OCO-X-COOH (where X is such that HOOC-X-COOH is a di- or tri-carboxylic acid of up to 8 carbon atoms), the aforesaid alkyl, alkoxy, and alkanoyl residues containing up to 4 carbon atoms each, or a water-soluble salt thereof.
Claim 2
Dependent Claim
127 words
An aqueous photopolymerisable composition comprising one or more terminally ethylenically unsaturated monomers, which are dispersible, miscible or soluble in water, one or more tertiary nitrogen-containing compounds optionally containing terminal ethylenic unsaturation as accelerators, a water-soluble colloid, and a water-soluble photoinitiator of the formula: where R' is halogen, alkyl, alkoxy, alkylthio, nitro, amino, alkylamino, dialkylamino, hydroxyalkylamino, alkanoylamino, benzoylamino, N-alkanoyl-N-benzoylamino, sulphonamido or acetyl, R 2 is alkylene of 1 to 4 carbon atoms, n is 0, 1 or 2, m is 1 or 2, and A is-COOH,-S0 3 H,-OS0 3 H, or-OCO-X-COOH (where X is such that HOOC-X-COOH is a di- or tri-carboxylic acid of up to 8 carbon atoms), the aforesaid alkyl, alkoxy, and alkanoyl residues containing up to 4 carbon atoms each, or a water-soluble salt thereof.
Claim 3
Dependent Claim
27 words
A composition according to claim 1 comprising one or more terminally ethylenically mono-unsaturated monomers, and one or more terminally ethylenically di- or tri-unsaturated monomers as cross-linking agents.
Claim 4
Dependent Claim
21 words
A composition according to claim 2, in which the mono-unsaturated monomer is one or more of acrylamide, N-methylolacrylamide, methacrylamide and N-vinyl-pyrrolidone.
Claim 5
Dependent Claim
42 words
A composition according to claim 2 or 3, in which the di- or tri-unsaturated monomer is one or more of polyethylene glycol (200) diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, tetraethylene glycol diacrylate, N,N'-methylene-bis-acrylamide, N,N'-trimethylene-bis-acrylamide, N,N'- hexamethylene-bis-acrylamide, trimethylol-propane triacrylate, and pentaerythritol triacrylate.
Claim 6
Dependent Claim
26 words
A composition according to any of claims 1 to 4, in which the said accelerator is triethanolamine, methyldiethanolamine, ethyl-diethanolamine, N,N-dimethylaminoethyl acrylate, N,N-diethylaminoethyl acrylate or Uvecryl P101.
Claim 7
Dependent Claim
23 words
A composition according to any of claims 1 to 5, in which the said colloid is polyvinyl alcohol, polyvinylpyrrolidone, gelatin, hydroxyethyl-cellulose, or hydroxypropyl-cellulose.
Claim 8
Dependent Claim
31 words
A composition according to any of claims 1 to 6 in which the said photoinitiator is 2-(carboxymethoxy)-thioxanthone, 2-(3-carboxypropoxy)-thioxanthone, 2-(3-sulphopropoxy)-thioxanthone, 2-(2-sulphoethoxyethoxy)-thioxanthone, 3,4-dimethyl-2-(3-sulphopropoxy)-thioxanthone, each as free acid or as a water-soluble salt thereof.
Claim 9
Dependent Claim
32 words
A composition according to any of claims 1 to 7, which also contains a cationic surfactant which is a polyoxyethylene or polyoxypropylene compound containing at least one tertiary nitrogen atom per molecule.
Claim 10
Dependent Claim
17 words
A composition according to any of claims 1 to 8, which also contains an inert polymer emulsion.
Claim 11
Dependent Claim
19 words
A composition according to any of claims 1 to 9, which also contains a colouring agent and/or a filler.
Claim 12
Dependent Claim
13 words
A composition according to claim 10 which contains a thioindigoid or indigoid dyestuff.
Claim 13
Dependent Claim
59 words
A composition according to any of claims 1 to 11 comprising, by weight of the said composition, 40 to 80% of water, 4 to 30% of the terminally ethylenically unsaturated monomers, 0.7 to 6% of the tertiary nitrogen-containing compound, 4to 14% of the colloid, 0 to 5% of a cationic surfactant, and 0.1 to 5% of the said photoinitiator.
Claim 14
Dependent Claim
92 words
A composition according to claim 12 comprising, by weight of the said composition, 50 to 70% of water, 3 to 8% of monofunctional terminally ethylenically unsaturated monomers, 0.5 to 9% of difunctional such monomers, 0 to 2% of trifunctional such monomers, 1 to 4% of tertiary nitrogen-containing compounds, 6 to 10% of the colloid, 5 to 15% (based on solids content) of a polymer emulsion, 0 to 3% of a cationic surfactant, 5 to 12% of a filler, 0 to 3% of a plasticizer, and 0.12 to 1.8% of the said photoinitiator.
Claim 15
Dependent Claim
16 words
A support sheet coated with a composition according to any of the preceding claims and dried.
Claim 16
Dependent Claim
19 words
A screen for screen printing coated with a composition according to any of claims 1 to 13 and dried.
Claim 17
Dependent Claim
22 words
The use of a composition according to any of claims 1 to 13 in the production of a stencil for screen printing.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.