FR2497968A1 - MATERIAL FOR DIAZOTYPY HAS ONE OR TWO CONSTITUENTS - Google Patents

Abstract

THE INVENTION RELATES TO A MATERIAL FOR DIAZOTYPIA HAS ONE OR TWO CONSTITUENTS WITH SIGNIFICANTLY IMPROVED LIGHT STABILITY. THE DIAZO IMPROVED SYSTEM CONTAINS AN ADDITION OF CUII SALTS OF ORGANIC CARBOXYLIC ACIDS AS DISCOLORATION INHIBITORS. THESE COPPER SALTS ARE EASY TO SYNTHEIZE AND HAVE NO ACTION ON SENSITOMETRIC PROPERTIES.

Description

The invention relates to a diazo material

  typie with better stability in the light of image dyes.

  The image dyes of materials for diazo

  typie are subject to a significant load on dielectric materials due to irradiation on the reading apparatus and processes for duplicating diazo materials on diazo. That's why, in addition to maintaining all other properties

  such as sensitivity, the power of resolu-

  the copulation activity and the ability to duplicate,

  the light stability of image dyes is a

  essential meter of high efficiency diazo systems.

  It is possible to some extent to improve the discoloration resistance of the azo dyes formed, by appropriate substitution on the diazonium components and / or couplers. However 'the result or effectiveness

  is mediocre for a relatively large synthesis need.

  It has therefore proved more advantageous to add to the diazo system specific compounds which suppress discolouration under the conditions existing in the reading and light exposure apparatus. These inhibitors

  Discoloration must then fulfill several secondary conditions.

  such as compatibility with the system, an appropriate maximum absorption (as much as possible more absorbent in short wavelengths than diazo components), stability in processing processes and good accessibility. Heretofore sterilized phenols have been used as additives (German patent application DE PS 1772 981), ethylene diamines (German patent application DE AS 1,797,322) and 3-anilinopyrazole (German application). DD-WP G 03 c / 221 629). The disadvantage of these compounds lies in their relatively low efficiency or action and partly in the need for substantial synthesis which is necessary for the preparation of the substances. Phosphoric acid anilides (German Application DD-WP C 03 c 222 062) are relatively easy to prepare, but are detrimental to

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  to duplication.Among all the compounds described so far, it is obvious that they retain the stability to light

  that for a while, until they are themselves

same destroyed.

  The object of the invention is to improve

  the light stability of diazo materials.

  The compounds used up to now to increase the stability to light have the disadvantage of having

  action too weak in the long run.

  The invention proposes to provide additives to the diazotype material which stabilize dyes

  in such a way that it no longer occurs, or only

  Few fading effects, even under a light exposure of several hours. All other properties of the material, however, must be preserved. This result is achieved according to the invention by the fact that the material for one or two component zonation contains

  inhibitor, one or more Cu (II) salts of

organic carboxylic acids.

  It is possible to use Cu (II) salts of organic carboxylic acids, such as, for example, unirradiated saturated aliphatic monocarboxylic acids (acidic).

  decanic), branched saturated aliphatic

  ethylacetic), unbranched unsaturated aliphatics (acid

  propionic), branched unsaturated aliphatics (methacrylate

  lique), aromatic (salicylic acid), araliphatic (acidic)

  mandelic), cyclic aliphatics (cyclohexane

  carboxylic acid), heterocyclic (isonicotinic acid), saturated aliphatic dicarboxylic acid (adipic acid), unsaturated aliphatic (maleic acid), aromatic

  (phthalic acid), hydroxycarboxylic acids (lactic acid

  that), halogenated carboxylic acids (dichloroacetic acid,

  propionic acid), ketoacids (pyruvic acid) and tricarboxylic acids (citric acid). The Cu (II) fractions are easy to synthesize (see GMELINS, Handbuch der anorganischen Chemie, Volume Cu) and, when used as inhibitors, they lead to a considerable increase in light fastness of the diazo materials. . They have good system compatibility, so that all the other requirements of a diazo system such as duplicability, thermal stability and sensitivity are fully satisfied. For the preparation of a diazotype casting solution, the copper salts are mixed with a diazonium salt, a stabilizing acid and optionally with one or more coupling agents and then dissolved in a

  polymer solution.This solution to flow is then applied

on a layer support.

  Suitable diazonium salts include

  among others the salts of 2-aminobenzene diazonium, 4-

  aminobenzene diazontum, 4-thenzenzene diazonium and phenylene diamines. Suitable coupling agents are all known hydroxyl group-containing coupling agents such as, for example, 2-hydroxy-3-naphthamides, 2,3-dihydroxynaphthalenes, resorcinol or naphthol. Suitable binders include cellulosic derivatives, vinyl polymers, copolymers of vinyl chloride and vinyl acetate, polystyrenes, mixed polymers of acrylates and acrylic acid, polyethylene oxides. The material can

  besides containing the usual additives such as a stabilized acid

  The support materials for the photosensitive layer can be polymer sheets, for example polyethylene terephthalate triacetate cellulose, paper, paper, and the like.

transparent, glass and a metal.

EXAMPLE

  In 1000 ml of a 10% cellulose acetate solution, a diazo system consisting of 4.5 was introduced. 2 moles of diazonium salt, 5.3. 10'2 moles

  of copulation agent, 1.7. 102 moles of paratoluene acid

  sulfonic acid and from 10O3 to 10-1 mole of Cu (II) salts of an organic carboxylic acid. This mixture was cast on a support of 10 to 15 m 2 of polyethylene terephthalate and a transparent film was obtained. The image dye was produced by development in a basic and submissive medium

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  one for 15 hours at Xenotest. The results are reported in the following table. As diazonium salts, the following were used:

  (I) 2,5-diethoxy-4-morpholino-tetrachloroborate

  benzene diazonium, (II) 2,5-dibutoxy-4-morpholinobenzene diazonium tetrachlorozincate and as coupling agents: (1) orthoanisidide of 2-hydroxy-3-naphthoic acid

  (2) 2,4-Dimethoxy-5-chloroanilide of 2-hydroxy-3- acid

naphthoic

  (3) 2-methyl-4-chloroanilide of 3-hydroxy-3- acid

naphtolque

  (4) 2-hydroxy-3-2-methyl-4-methoxyanilide

naphthoic

  (5) 2-hydroxy-3-2-methyl-3-nitroanilide

naphthoic (6) resorcinol

(7) -naphthol.

  Characteristics of: Substance used: Constituents: Agents of: Discoloration rate h: neck on Xenotest of carboxylic acid amount diazonlum copulation after Xenotest 15

  name 1 quantity. - with inhibitor: without inhi.

  - -: ^: | _biter Monocarboxylic acid; Propionate of: saturated, unbranched aliphatic bU (II)

C1-C12

  Cu (II) butyrate: Caproate of: Cu (II): Cu (II) acetate Laureate: Cu (II) DZ, 36'10 'mol: -2: 2,13.10-2mol: -2: 3, 55'10-2 mol:: 4, 73'10'2mol: -2: 9,4710-2mol:: 2,: 3'102mol: -2: 2,13'10'2mol: 2, 09'102mol: 1.72 10O2mol: 1.72.10-2mo1: 1.72.10-2mol: -2: 2.73O10 ml: 2, 21'102mol: I II II II II II II I II II II I II II

: (1) / (6 [

: (1) (6): (7): (5) (2): (3)

: (1) 1 (6)

(1) (6) (5)

(1) / (6)

  : (1) 0% 24%% 0% 0% 8% 3% 14% 51% 29%%% 51% 49% c. 0% 24% 0% 0%% 51% 26% 43% 2%% 42% 47%% - P. Co No - s Characteristics of Substance used Constituents Agents of discoloration rate after carboxylic acid name quantity diazonium copulation Xenotest from 15h

with inhibitor without

  _______________________ biteur Aliphatic monocarboxylic acid Pival Nate -2 Cu (II) 3.77 10 2mol I (1) / (6) 3% 27% saturated, 2.26 10'2mol II (1) 0% 51% branched 1 , 50 10-2moi II (7) 0% 30% C4-C10 2.26 10'2moi II (2) 0% 50% 1.50 '10'2mol II (3) 0% 39% 2.26 10' 2mol II (4) 9% 34% Aliphatic monocarboxylic acid, 2 unsaturated oleate U (II) 1'908 10'2mol II (1) 8% 51% unsaturated i1.90 10'2mol II (6) 0% 26% unbranched.1, 90 10-2mol II (3) 8% 39%

Acid .. Rpnzoate 51% ..

  Monocarboxylic acid e Cu (II) 6.55 10'2mol II (1) 11% 51% aromatic Monocarboxylic acid Phenylaceous 9.00 10 2mol I (1) / - 6) 5% 24% araliphatic CUm (I7) 50 10'2mol II (7) 0% 90%

  ,,,,,, ,, ,,,,,,,,,,,,,. ,,,,. ,,. ,,, L ,.

  Characteristics of Substance Used Constituents Fade Rate Agents After

  the carboxylic acid name quantity diazonium copulation Xenotest of 15h without i nhi-

  _______________ _. with bitumen inhibitor

_........

  Aliphatic monocarboxylic acid Chloroacetate 3.01.10: 2mol II (1) 8% 47% halosubstituted Cu (II) Malonic acid dicarboxylic acid 1.24. 102mol II (1) 17% 51% Cu (II) aliphatic, saturated Dicarboxylic acid, aliphatic, maleate of -2 unsaturated Cu (II) 1,35'10 mol. II (1) 19% 51% Dicarboxylic acid, aromatic Phthalate 1, 20 10'2mol II (1) 17% 51% Cu (II) Tricarboxylic acid Citrate 1,25'10 2mol II (1) 20% 51% Cu (II) keto-add Pyruvate -2. Cu (II) 1.50'10 mol II (1) 20% 51% Hydroxycarboxy acid Lactate 1.81. 10'2mol II (1) 18% 51% liquefaction Cu (II) Heterocyclic acid Isonicotate 1.23'10 2 mol II (1) 18% 51% Cu (II) r * - NO o oq co

Claims (4)

  l.Material for one or two-component diazotype   killing agents with discoloration inhibitors, characterized in that, as an inhibitor of discoloration, it contains one or more   Cu (II) salts of organic carboxylic acids.   2. One or two-component diazotype material   killing agents with discoloration inhibitors according to the   1, characterized in that as an inhibitor of discoloration   it contains one or more Cu (II) salts of monocarboxylic acids organic boxylics.   3. One or two-component diazotype material   containers with discoloration inhibitors according to the   1, characterized in that as an inhibitor of discoloration   it contains one or more Cu (II) salts of dicarboxylic acids organic licks.   4.Material for one or two-component diazotype   killing agents with discoloration inhibitors according to the   1, characterized in that, as a bleaching inhibitor,   it contains one or more salts of Cu (II) organic tricarboxylic.