SU301007A1 - HEAT-DETERMINED DIAZOTYPIC M / CTERIAL - Google Patents

Description

Thermally known thermoelectric properties1) 1st diazotinic material, a state of a substrate and one or several layers containing diazoconditions, azo-composition, an acidic stabilizer, and a display of the most recent substance that evolves volatile axion. NiN-disubstituted amides of aliphatic or aromatic acids are used as the manifestation of food.

Material with such spectators is not sufficiently resistant to heat and humidity of air during long storage. In addition, the contrast of developed horse is significantly lower than the contrast of horse meat that is gluchennoy when it appears ammonia. In many cases, the copy contrast decreases if the material is stored long enough before exposure.

The temperature of the tracing paper is strongly influenced by the ironing of the background, and the color of the dye in the thermoconium formed by the combination more or less rapidly changes. The temperature during the process should not be high (not higher), but the duration of this I1cssss should not be very large (from 5 to 15 seconds).

This is a relatively short time for the production of relatively low temperatures.

Disamen-1 biurets are used as a developing substance.

/ R, H.N - CO - NH - CO - N

R, where RI and R2 are alkyl, cycloalkyl. aryl or

aralkyl;

or RI and R2 together with the nitrogen atom form a heterocyclic residue.

The table below gives a series of NiN-disubstituted biurets and their cladding temperatures.

Ethnuretic biurets are stable at temeture and about 100 ° C, and also resistant to hydrolysis and decompose only at higher temperatures. As tsmperera grows, the number of bases increases, the amount of HN1 is released, per unit of time. At temneterours between 130 and 160 ° C, the amount of excreted base is sufficient for manifestation. Good results are obtained with biurets, the melting points of which are precisely within these limits.

Neither the diazo type material consists in the fact that one or several NiN-disubstituted biurets are applied directly onto the substrate, together with the binder, after which the usual two-component diazo type layer is applied on the same side. The heat-sensitive layer may contain one or more azo-components. In this case, only the diazo compound in the photosensitive layer is combined with acid additives. You can also put a photosensitive layer between the substrate and the heat sensitive layer. When using gas-permeable substrates, the photosensitive and heat sensitive layers can be applied to different sides of the substrate. In this case, especially horsepowers, such biurets, which during thermolysis, in addition to ammonia, form aliphatic amines with high vapor pressure, i.e. compounds in which the residues Ri and R2 are alkyl groups with up to 8 carbon atoms. Volatile bases formed during thermolysis diffuse through the substrate into the photosensitive layer. The diazocompound and azo-component should be in the photosensitive layer.

Finally, the developer may be in the same layer along with the diazo compound, azo compound and acidic additives. For this purpose, only those disubstituted biurets that are sufficiently soluble in the aqueous solutions of sensitizers used are suitable.

Most of biurets are thoracic soluble in water. Therefore, they are used in the form of a toicodisperse phase in combination with a bonding agent, and sometimes with an inorganic pigment: and as a separate layer.

The amounts of the product and the bond are selected so that in the heat sensitive layer there is 1 weight. H. Pro Vitel came: axis about 0.25-0.5 weight. h svyazhego The optimum amount of product should be 3-5 g per 1 m of surface. In order for the surface of the heat-sensitive layer to be smooth and non-adhesive, it is advisable to introduce thin-dispersing inorganic substances, for example, pigments, into the heat-sensitive layer. It is best of all if the amounts of iro vitel and inorganic pigment in the heat sensitive layer are related to each other as 1: 0.2-1: 0.4.

As substrates, conventional diazotinium substrates can be used. It is best to apply transparent or opaque. It is also possible to use multilayer paper or silt, for example, from cellulose acetate, cellulose acetobutyrate, polyesters, cellulose hydrate or polyamides, as well as textile materials.

As the binder used, e.g., poliviiilatsetat, poliviiilhlorid, polivinilideihlorid, formilpolivinilatsetal, butirilpoliviiilatsetal, starch, proizBodn; e cellulose, polyvinyl pyrrolidone, poly-N-RL nnlL -metplatsetamnd or polyvinyl snirt.

As inorganic, topodisperse pigments for heat-sensitive layers 1, for example, silicic acid, aluminum silicates, titanium dioxide or barium sulphate are used.

Copier material can be applied for thermographic copier. Usually, for this purpose, a copying material is placed between the original and the source of infrared radiation so that the side to be copied and heat sensitive

a layer of copying material touched. When exposed to infrared rays, the unlit parts of the image heat up more than the lighter ones. This heating is sufficient to decompose the display and make a copy. It is good if the copies prepared in this way are then fixed by irradiating all their fineness. Otherwise, the copier material may stain with subsequent heating. Conrosal material gives copies of good but the background, contrast, tracing paper and light. The resulting copies of these properties practically do not differ from the copies obtained when developing ammonia.

EXAMPLE 1: 1-1a a white paper substrate is applied with a dispersion of the following composition (in weight parts): 100 water, 4 poly-K-vinyl-K-methylacetamide, 2.5 polyviiylacetate disnersions Ovinnanas Z50 / 25vZ ), 2,6 tons of silicic acid {aerosil), 2,6 tons of silicic acid (siloid), 15 S, K-diethylbio retum.

The substrate coated with “a layer of dispersion is present at 90-OO C in a stream of air,

after which the next sensitizing solution (in weight parts) is papos per layer. 3 citric acids, 4 thioureas, 2 sodium naphthalene salts 1, 3, 6-trisulfonic acid, 2.3 sodium salts of 2,3-dioxy acid, 1: 6-6 sulfonic acids,

1 4-dimethylaminobenzene diazoate chloride as a double salt with zinc chloride, 7.5 zinc chloride, 0.02 saponin, 2.5 isopronyl alcohol, 80 water. A paper substrate treated in this way is formed in a stream of air at 90-100 ° C.

EXAMPLE 2: On a white paper substrate, the dispersion of the following composition (by weight h.): 100 water, 4 nol-N-vi11Iln p | rolidone (luviskol K 90), 2.5 polyvinyl acetate)

disiercias (movilit DMC2), 2.5 then code-silicate silica (Aerosil),

2,5 fine silicic acid (silond), 15 N-urei. Carbonicobiol or irolidine.

Paper sheets in the conditions of

The meter 1 is copied through the original, and then incubated for about 7 seconds under the rollers heated to 140-145 ° C. Non-illuminated places are covered with a dye layer. Dark blue azo dyes on a transparent white background. Example 3. A white paper substrate usually used in diazotnpy is coated on one side with a dispersion of the following composition (in weight parts): 100 iodine, 4 poly-N-vinyl-K-methylacetamide (K 91), 2.5 polyvinyl acetate dispersion (winnapas Z50 / 25vL), 2.5 rice starch, 3.5 finely dispersed silicon ACID (aerosil), 15 N-methyl-N-benzyl biuret. This substrate coated with a layer of dispersion is dried at 70-90 ° C in a stream of air and then sensitized with a solution whose composition (by weight hours) is as follows; 4 tartaric acid, 1.9 aluminum sulphate, caffeine, 5 thiourea, 2 sodium suns naphthalene1, 3,6-trisulphonic acid, 0.02 sanonin, 0.6, 2,3-dioxynaphthalene, 0.65 6-bromo-2- hydroxy-3-naphthoic acid in the form of its N-methyl-piperazide, 3 glycerol, 6 isopropyl alcohol, 3 glacial acetic acid, 0.75 4-mo: rfolino-2, 5-D Imethoxybenzene diazonium chloride and zinc chloride , 5 zinc chloride and 70 water. After sensitization, the paper substrate is dried at 70-90 ° C. Example 4. A dispersion is used which has the following composition (by weight hours): 100 water, 4 POLY-S-vinyl-S-Methylacetamide {K 91), 2.5 polyvinyl acetate dispersion (Movilite DMC2), 4 fine dispersed silicic acid ( Aerosil), 2 rice starch, 15 N-ureidocarbonylheptametilenimina. The resulting material has a high sensitivity. It is exposed through the original copied and then kept for about 5 seconds under rollers heated to 140-145 ° C. A shaded image appears in the unlit areas. Copies are distinguished by high contrast and rich blue with a violet hue on a transparent white background. Example 5. On a paper substrate for a blueprint, a dispersion of the following composition (by weight h) is applied on one side: 100 water, 4 poly-N-vinyl-N-methyl acetamide (K 88.1), 2.5 polyvinyl acetate dispersion ( vinapas-Z 50/25 vL), 2.5 finely divided silicic acid (azrosil), 2.5 finely dispersed silicic acid (siloid), 2 rice starch and 15 K, N-diethylbiuret. The resulting material is dried with air flow at 90-100 ° C and then sensitized with a solution having the following composition (in weight parts): 3 sulfosalicylic acid slots, 4 thiourea. 2 sodium naphthalene-1, 3, b-trisulphonic acid, 1 sodium salt of 2,3-dioxynaphthalene-6-sulphonic acid, 2 resorcin, 1, 4-diethylamine 1 Nobenzene nazonium chloride in the form of a double salt with zinc chloride, 7.5 chloride, 2, 5 isolate alcohol, 1 glacial acetic acid, 0.02 saponin and 75 water. shat at 90-th SO, light up in the usual way and then contact about 10 ce :. with rollers heated to 140-145 ° C. Contrast mines are created with rich, neutral black images on a transparent white background. EXAMPLE 6. On a transporait paper, usually used in Dmatipine, a dispersion of the following composition is applied on one side (in weight parts): 100 water, 8 polyvinyl alcohol (Gosenol NR05), 2.5 polyvinyl acetate dispersion ( Movilite DMC 2), 3.5 tonnes of silicic acid (cnloid), 1.5 S-ureidocarbonyl-2,5-dimethylpyrrolidine. The resulting material is dried and then a sensitizing solution of the following composition (by weight h) is applied to it: 4 sulfosalicylic acid, 4 thiourea, 2.5 naphthalene-1,3 sodium salt, 6-trisulfonic acid, 3 resorcin, 0.3 2 , 3-dioxynaphthalene, 1,6 4-D1Nmethylaminobenzene-diazonium chloride in the form of a double salt with zinc chloride, 0.3 4-morpholino -2,5 - diethoxybenzene diazonium tetrafluoroborate, 5 zinc chloride, 0.5 caffeine, 0.02 CaPanine, 2 isopropyl alcohol, 2 glacial acetic acid and 75 water. It is dried in the usual way at 90 ° C. C. The sheet of paper treated in this way is irradiated in the usual way and heated for about 8 seconds to 140-145 ° C. The made shoal is distinguished by an exceptional contrast of a dark brown azo dye on a white background. It is well suited for use as an intermediate original for further reproduction. EXAMPLE 7: On the hydrophilic side of a polyester film, the dispersion anion dispersion is as follows; its composition (in weight parts); 100 water, 4-poly-α-vinyl-N-methylacetamide (K 88.1), 2.5 polyvinyl acetate dispersion (Vinapas Z50 / 25vL), 2.5 finely dispersed silicic acid (siloid), 15 Y, 1 - diethylbiuret. The film with the applied layer is formed prn 90-100 ° С, after which it is treated with a solution having the following composition (in weight parts) 3 sulphosalcinyl O1 acid, 4 thiourea, 2.5 sodium salt, naphthalene-1, 3, 6-tr, nulfonic acids, 3 resorcinol, 1, 2, 4-dirylaminobenzodiazonium tetrafluoroblug, 7.5 chloric zinc, 0.02 saponin, 2.5 isopropanol, 2.5 glacial acetic acid, and 0 water. The sensitization is followed by a fresh horn at 90-100 ° C. The film is illuminated in the usual way and kept for about 9 seconds under the grooves heated to 140 - 45 ° C. Contrast mop with a juicy brown image on a white feather is obtained. A copy can be used as a transit original for further deceleration.

sensitization a solution of the following composition (in weight parts): 2.5 citric acid, 4.5 zinc chloride, 2.5 sodium salt. naphthalium1, 3, b-trisulfonic acid, 4 thiourea, 0.02 saponin, 2.3 and sodium 2,3-dioxynaphthalene-5-sulfonic acid salts. 1,4 4- (1-ethyl-, (3-hydroxyethyl) -amiobenzene diazo: nium-chloride in the form of a double salt with zinc chloride, 2 isoghopropyl syirt, 80 water.

Sensitized paper is dried in the usual way with 90-100 ° C. Then a trace of the following composition is applied to its reverse side (part by weight): 100 water, 3 ioliviil films (N 30-98), ;;, 5 polyviliylate dispersion (viiiapas Z 50 / 25vL), 5 finely dispersed - silicic acid (siloid) and 15 NiN-dimethylburet.

After: Drying at 90-100 ° С a sheet of diazotine paper is illuminated and then loosened for about 10 seconds under the rollers heated to 145-150 ° С. The mine is characterized by an exceptional contrast of the soya blue azo dye on a transparent white background.

Aqueous dispersions are used to form the heat-sensitive layers in H rovers 1-8, which are prepared by grinding all substances in a ball or colloid mill.

The particle size of the disubstituted biuret at the same time decreases to 5-15 microns. The dispersion is applied on the substrate in such a way that after drying the weight of the biuret is about 3-5 g / l.

The made diazo-type materials that have not been exposed to exposure are stored for at least 5-7 days under conditions of 70% relative humidity and a temperature of 40 ° C.

Ureido Formulas

T. Il., ° С

Ra

140-142 SNS

Csh

The loss of contrast in a copy made of a stored material is negligible compared to a freshly prepared copy material of the same structure.

Subject invention

1. A thermopunable d-nazothiae material consisting of a substrate, one or several layers containing diazosoedeyii, azo-composition, an acidic stabilizer and a malignant substance releasing a volatile base, characterized in that substance, it contains NbN-disubstituted biurets of formula

/.R. HsN - CO - NH - CO - N

R,

where RI and Rs are alkyl, cycloalkyl, aryl or

aralkyl;

or R, and together with the nitrogen atom form a heterocyclic residue.

2. A diazothiene material, i.e., characterized in that it consists of a substrate, a layer containing the developing substance, and a layer containing the diazo compound and the azo component.

3. Diazotypical material of claim I, characterized in that it consists of a porous substrate, which on one side contains a layer with nanoparticles, and on the other side, a layer with diazoconnection and azo-composition.

SzN7

H CsN7

124-126 С4Н9 Н С4Н9 136-139

(CH3) 2CH2CH2 (CH3) 2SP2 CHO 130-132

and sbn

116-118

n seP

13