SU1161415A1 - Composition of carbon paper coating - Google Patents

Abstract

1, STANDARD COATING OF COPY PAPER, containing soot-based gent, indulin, methyl-violet dye, 1b, oleic acid, oil, ionic polymeric extractant, paraffin, wax-mont nf wax and non-tarred brown wax, which is designed to be used in order to get a wax. It contains the product of crystallization of cbjporo wax from gasoline with a temperature of Utabelode 85–86 ° C, an acid number of 87–90, an acid content of 26–29, and a resin content of 1.86 -2.00% with trace the ratio of the components of composites ъ MaS t / o Pigment based on carbon black 22,1-23,7 Indulin 0.7-1.3 Methyl violet dye 1.0-2.5 Oleic acid2, 8-4.3 Oil 23.0-29 , 0 Ionogenic polymeric dispersant 0.4-1.6 Paraffin 4.0-8.0 Wax-montan raw 12.0-28.5 Specified buroa with coal tarred wax 11.4-24.0 2. Composition POP.1, characterized in that as a pigment it contains carbon black or a mixture of carbon black with iron oxide monohydrate. a 3. The composition of POP.1, distinguished by the fact that, as the ionic polymer dispersant 01, it contains sodium butadiene rubber or a copolymer of butadiene and 2-metip-5-vinshpyridine mol.m. 3000-30000.

Description

I The invention relates to the production of carbon paper and can be used in pulp and paper industry in the manufacture of reusable carbon paper. The purpose of the invention is to increase the gloss and decrease the mark-up. As a pigment based on carbon black, this composition contains carbon black channel channel marks DG-100 or kiln brands PGM-3ZN or its mixture with iron oxide monohydrate (yellow iron oxide pigment). As an oil, mineral oil is used, for example, industrial I-20A , or a mixture of mineral and vegetable (castor) oils .. As an ionic polymeric dispersant, the coating paper composition of carbon paper contains sodium butadiene rubber with a plasticity of 0.62-0.66 or a copolymer of butadiene and 2-methyl-5-vinsh1-pyridine with a mole, 3000 -30000. These components can be added to the coating paper of copying paper individually or in the form of special carbon black paste PUM-30-10 or PUM-60-10. The introduction of lignite wax, which is not tarred by crystallization from gasoline into the composition of the coating of copied paper, increases the gloss value and reduces its marring. This effect is due to the ability of the wax during the crystallization of the melt to form a hard film on the surface, due to the low resin content, higher hardness and high dropping temperature. Resin-free lignite wax with a resin content of above 2.0% and a dropping point below has a lower saponification number (below 87). With the introduction of such a wax into the composition of the copy coating, there is no significant reduction in marmaria and an increase in gloss. Wax with a resin content below 1.86% can only be obtained by multiple crystallization from benzine with a decrease in product yield, while the dropping point of the wax is not increased slightly with a simultaneous increase in the saponification rate. Increasing the hardness of the wax causes a simultaneous increase in the hardness of the copier coating, which reduces the adhesion of the coating to the base paper. A small change in the acid number of ububal wax, which is not tarred by crystallization from gasoline, does not have a noticeable effect on the performance of carbon paper. When using a wax-blend mixture of raw and de-tarred brown coal wax obtained from gasoline, the ratio of waxes varies from 2.5: 1 to 1: 2, with an increase in the content of montana wax in this mixture, the copying coating decreases and increases mark-up, with the introduction of an unlimited amount of de-tarred brown coal wax, dispersion of the composition is difficult and the coating uniformity is disturbed, which, in turn, also reduces the amount of gloss of the coating. PRI me R 1 (according to the invention). A jacketed reactor and a stirrer are loaded with paraffin, crude wax, and tarry-free lignite wax, salt-free crystallization from gasoline, with a dropping temperature (Ubbeloh) 85 ° C, saponification number 87, acid number 29, resin content 1.86%. The wax mixture is melted with stirring. PUM-30-10 black carbon paste (TU 38.11517-81), containing PGM-3ZN furnace black, I-20A industrial oil, and a butadiene copolymer and 2-methyl, are gradually added to the resulting melt. -5-vinylpyridine, a solution of Indulin oleates and methyl-violet dye in oleic acid, which is prepared from individual dyes in a known manner, iron oxide monohydrate and an additional amount of I-20A industrial oil. The mixture is stirred at 100-110 ° C until a homogeneous mass is obtained, which is then frayed once in the spray room. Get copy coating containing, wt.%: Soot PGM-ZZN 17,8i monohydrate of iron oxide 5,0 j Indulin 0,7; Aetyl violet dye 2,3, oleic acid 4, OJ in industrial oil I-20A - 29.0; with a polymer of butadiene and 2-methyl-5-vinylpyridine 1,2; paraffin 4,0 J. wax-montan crude 12,0; Brown coal wax, mineralized crystallization from gasoline, 24.0. The copy coating is applied on a base paper with a mass of 1 m - 16 g when applied to a paint tray using a wire scraper; size of the pump is 10 g / m. Black copy paper is obtained, which is tested according to GOST 489-82. The number of simultaneous and consecutive copies, marking of coatings of carbon paper and smearing of prints on copies are determined. In addition, using the GGF-4B gloss meter, the gloss index of the paper copying coating is determined. The test results are shown in the table. PRI me R 2 (according to the invention). The composition of the coating copying boom containing, wt.%: Carbon black PM-40N 18, iron oxide monohydrate 4.0; Indulin 1,3, methyl violet dye 2.5; oleic acid 2.8; Indus; I-20 A stream oil 17.0; castor oil 6, OJ-butadiene rubber 0.4; paraffin 8.0; crude wax 28.5; A lignite wax, deresinated by crystallization from gasoline, with a drop-point temperature, an amount of gold, 90, an acid number of 29 and a tar content of 2.0%, 11.4; and copy paper with this coating is obtained and tested as in Example 1. The test results are listed in the table. Note 3 (according to the invention). The composition of the coating of copy paper containing, in wt.%: Carbon black channel duo DG-100 18.5; ferric oxide monohydrate 5.2 | Indulin 1.0; methyl violet dye 1.0 oleic acid 4.3, industrial oil I-20A 26.1; sodium butadiene rubber 1.6; paraffin 8.0; wax montan sc 15.5; A lignite wax, degummed from crystallization from gasoline, with a dropping point, an admixture number of 87.6, an acid number of 26.0, and a resin content of 1.9% -18.8, is prepared analogously to example 1 with the difference that The oils are prepared by repeated grinding in a paint mill. Copy paper receive and test as in example 1. The test results are shown in the table. Example 4 (according to the invention). The composition of the coating of carbon paper containing, in wt.%: Carbon black ПЗМ-ЗЗН 22,3J Indulin 1.0; methyl violet dye 2,5; oleic acid 3,5; industrial oil I-20 A 19.3; castor oil 6.0; a copolymer of butadiene and 2-methyl-5-vinylpyridine 0.4; paraffin 5.0; crude wax 28.0; A lignite wax, deresined by crystallization from gasoline, with a dropping point of 86 ° C, an amount of ore, 89, an acid number of 29 and a resin content of 1.92% -12.0, is prepared analogously to example 1 with the difference that butadiene and 2-methyl-5-vinyl-pyridine are introduced into the composition by adding to the remaining components of the PUM-60-lf carbon black paste (TU 33.11520-82). Copy paper is prepared and used as in Example 1. The test results are shown in the table .. Example 5 (prototype). The composition of the coating of carbon paper, content, wt.%: Carbon black ПЗМ-ЗЗН 17.8; iron oxide monohydrate 5.4; Indulin 1.0; methyl violet dye 2,5; oleic acid 3,5, industrial oil I-20A 26,0; Castor oil 5.0; sodium butadiene rubber 0.8, paraffin 3.0; wax montan crude 18.5; wax-montan bleached 16.5, and copy paper with this coating is prepared and tested as in example t. The test results are shown in table Example 6 (control). The composition of the coating of carbon paper containing, in wt.%: Soot PSH-ZZN 18,0; ferric oxide monohydrate 5.0j Indulin 1.0, methyl-violet dye 2.5; oJ unsubstituted acid 4.0; industrial oil I-20A 26, Oi sodium butadiene rubber 0.5;

51

paraffin 9.0; wax montan crude 8.0; Brown coal wax, degraded from crystallization from gasoline, with a dropping temperature, saponification number 90, acid number 29 and resin content 2.0% -26.0, and transfer paper are prepared and tested as in example t.

An example (control), the Cossack Coating Stand, content, wt.%: Carbon black ПЗМ-ЗЗН 18jO; iron oxide monohydrate 5.0; Indulin 1.0; Methyl violet dye 2.5; oleic acid, 0 industrial oil I-20 L 26.0; sodium butadiene rubber 0.5, para

61415b

Fin 9.0, wax-montan crude B, 0 {brown-coal wax, not crystallized from gasoline, with a dropping temperature, 90 ohm, acid number 29, and 2% resin content - 26.0.

Copy paper is prepared and tested as in Example 1. In this case, the composition of the coating is difficult to disperse and unevenly applied on the base paper. Stripes are observed on the copier, the quality of prints on copies is uneven.

15 The test results are shown in the table.

The uniformity of the intensity of impressions

Mark-off, optical units Note. Number Number

No satisfactory entertaining simultaneous impressions for all examples 8, consecutive impressions 18.

Claims (3)

1. COMPOSITION OF COATING COPY PAPER containing soot-based pigment, Indiline, methyl violet dye, oleic acid, oil, ionic polymer dispersant, paraffin, wax-mont.an raw and non-tarred brown coal wax, distinguishing with the aim of To increase the gloss and reduce the setting, it contains, as a non-tarred brown coal wax, a crystallization product of crude wax from gasoline with a Ubbelod drop point of 85-86 ° С, a saponification number of 87-90,. an acid number of 26-29, a resin content of 1.86-2.00%, followed by the ratio of components to VA, wt.%: Pigment based soot 22.1-23.7 Indulin 0.7-1.3 Methyl violet dye 1.0-2.5 Oleic Sour that 2.8-4.3 ' Oil 23.0-29.0 Ionogenic poly measured dispersion gator 0.4-1.6 Paraffin 4.0-8.0 Wax- * Montan raw 12.0-28.5 The specified buro • coal supply tar wax 11.4-24.0 (/ from 2. The composition according to claim 1, characterized in that as a pigment it contains carbon black or a mixture of carbon black with iron oxide monohydrate. 3. The composition according to claim 1, which consists in the fact that as an ionic polymer dispersant it contains sodium butadiene rubber or a copolymer of butadiene Y 2-metip-5-vinylpyridine with a mol.m. 3000-30000. 1,161