摘要:
A compound of the general formula I ##STR1## in which D denotes a 1,2-naphthoquinone-2-diazide-4-sulfonyl or - 5-sulfonyl radical,R.sup.1 denotes an alkylene group andR.sup.2 denotes a hydrogen atom, an alkyl group or a group R.sup.1 --OH,or of the general formula II ##STR2## in which X denotes an alkylene group, an arylene group or a group of the formulaNH--Y--NH, wherein Y is an alkylene group or an arylene group,R.sup.3 denotes an alkylene group, which may be interrupted by ether oxygen atoms,n is a number from 1 to 40 andm is a number from 0 to 50,the ratio m:(m+n) being from 0:100 to 95:100 and R.sup.1 and D having the above-indicated meaning, are disclosed. The compounds may be used in positive-working photosenitive materials for the production of printing plates and photoresists. Compounds according to formula II do not require an addition of polymeric binders.
摘要:
A positive-working radiation-sensitive mixture is described which is composed of a compound having at least one C--O--C bond which can be split by acid, a compound which forms a strong acid when irradiated, a binder which is insoluble in water and soluble in aqueous-alkaline solutions, and a resin having solubility properties which differ from those of the binder and which is selected from (1) a polyurethane resin obtained from an organic isocyanate and a polymer which contains hydroxyl groups, (2) a polyvinyl alkyl ether, (3) an alkyl acrylate polymer, or (4) a hydrogenated or partially hydrogenated derivative of colophony. As a result of the resin additives, photoresist layers are obtained which have good adhesion to the support, good flexibility, good latitude in developing and good resolution.
摘要:
Polymers capable of being cross-linked by light, which comprise units having lateral substituted 1-carbonyloxy-1H-naphthalene-2-one groups of the formula ##SPC1##Where R is hydrogen or methyl; R.sub.1 is a streight-chain or branched, saturated or unsaturated hydrocarbon radical having from 1 to 3 carbon atoms, in which a hydrogen atom may be substituted by cyano, (C.sub.1 to C.sub.2) alkoxy, carbo-(C.sub.1 to C.sub.2)-alkoxy, (C.sub.1 to C.sub.2)acyl or (C.sub.1 to C.sub.2)acyloxy and R.sub.2 and R.sub.3, independently, each are (C.sub.1 to C.sub.4)alkyl or chlorine; and R.sub.4 is (C.sub.1 to C.sub.4)alkyl, nitro, chlorine or bromine, are provided.
摘要翻译:能够通过光交联的聚合物,其包含具有式WHERE R为氢或甲基的侧取代的1-羰基氧基-1H-萘-2-酮的单元; R 1是具有1至3个碳原子的链状或支链,饱和或不饱和的烃基,其中氢原子可以被氰基,(C1-C2)烷氧基,碳 - (C1-C2) - 烷氧基, (C1至C2)酰基或(C1至C2)酰氧基,R2和R3独立地为(C1至C4)烷基或氯; 并且R4是(C1-C4)烷基,硝基,氯或溴。
摘要:
A light-sensitive, diazonium group-containing polycondensation product is described which comprises(a) an optionally substituted diphenylamine-dianzonium salt I.(b) a compound corresponding to the formula IIR.sup.4 --O--CH.sub.2 --R.sup.5 (II) whereinR.sup.4 is H, alkyl or acyl, andR.sup.5 is an optionally substituted aromatic radical, and(c) a compound corresponding to the formula IIIR.sup.6 --O--CH.sub.2 --R.sup.8 --CH.sub.2 --O--R.sup.7 (III) whereinR.sup.6 and R.sup.7 are H, alkyl, or acyl andR.sup.8 is the radical of a compound selected from the group consisting of aromatic hydrocarbons, phenols, phenolethers, aromatic thioethers, aromatic heterocyclic compounds, and organic acid amides,with the radicals resulting from compound II being directing linked to the units of the diazonium salt I.In the production of the polycondensation product, I is first condensed with II and then with III. The product is suitable for use as a light-sensitive substance in recording materials, particularly in printing plates, and yields light-hardening products which have an increased oleophilicity.
摘要:
This invention relates to a photo-cross-linkable polymer containing units each having a 2-pyridone side group. The invention also relates to a photosensitive copying material including the novel photo-cross-linkable polymer.
摘要:
This invention relates to an improvement in the process for the preparation of screen printing stencils by an electroplating method, which comprises coating a metallic matrix, provided in the manner of a screen with dots of insulating material, with a photoresist layer, exposing the photoresist layer imagewise and developing it by washing out, and rendering those areas of the photoresist layer which have remained in place electrically conductive in the course of imaging, electrodepositing metal up to a desired height on the conductive image stencil and on the matrix ridges surrounding the insulating screen dots, and removing the patterned screen printing stencil thus obtained from the matrix, the improvement which comprises rendering the photoresist layer conductive only on its surface and before developing.
摘要:
This invention relates to a light-sensitive copying composition for the preparation of screen printing stencils comprising a condensation product of an aromatic diazonium compound in admixture with a hydrophilic hardenable binder, the condensation product containing at least one unit each of the general types A(-D).sub.n and B which are connected by bivalent intermediate members derived from a condensable carbonyl compound, whereinA is a radical of a compound containing at least two isocyclic or heterocyclic aromatic nuclei, which compound is capable of condensation in at least one position with an active carbonyl compound in an acid medium,D is a diazonium salt group attached to an aromatic carbon atom of A,n is an integer from 1 to 10, andB is a radical of a compound free of diazonium groups, which compound is capable of condensation in at least one position with an active carbonyl compound in an acid medium,And wherein the anion of the diazonium salt is derived from an aliphatic monosulfonic acid having 1 to 6 carbon atoms.
摘要:
A photopolymerizable mixture is described which contains a polymeric binder, a polymerizable compound and an acridine compound of the general formula I ##STR1## as photoinitiator, in which R.sup.1 denotes an optionally substituted alkyl or acyl group,R.sup.2, R.sup.3 are identical or different and denoteand R.sup.4 hydrogen or halogen atoms or optionally substituted alkyl or acyl groups,R.sup.5, R.sup.6 are identical or different and denoteand R.sup.7 hydrogen or halogen atoms or optionally substituted alkyl, aryl or acyl groups, or groups of the formula II ##STR2## The photoinitiators yield a mixture having high photosensitivity and have a lower tendency to diffusion than the known 9-phenylacridine.
摘要:
Light-hardened photoresist layers are stripped by treating the layer with an aqueous solution of an organic quaternary ammonium base and, optionally a strong inorganic base. The resulting layer residues are dispersed as relatively small flakes which do not become lodged between conducting paths.
摘要:
A photosensitive mixture comprised of(a) a diazonium salt polycondensation product comprising recurring units of the formulas A--N.sub.2 X and B, which units are linked by bivalent intermediate members derived from a carbonyl compound which is capable of condensation, wherein the A--N.sub.2 X units are derived from aromatic diazonium compounds that are capable of condensation with formaldehyde, and the B units are derived from compounds which are free from diazonium groups and are also capable of condensation with formaldehyde in a strongly acidic medium;(b) a compound which can be polymerized by a free-radical process;(c) a photopolymerization initiator; and(d) a polymeric binder that is insoluble in water, but soluble in organic solventscan be used in the production of photosensitive printing plates and photoresists.