Composition to obtain a pigment forms printing ink

 

(57) Abstract:

Usage: getting ink for artificial leather, oilcloth, etc., the inventive mixer for dry substances are mixed, wt. including: a copolymer of vinyl chloride with vinyl acetate (VA - 15) 100, oleic acid 1 - 3, silicon dioxide 1 - 5, plasticizer 30 - 50, stearic acid calcium 0.5 to 3, pigment 40 - 70. Then on mixing rollers get pigmentary form. Film with a print-based pigment form has the tolerance to 5% NaCl, HCL and NaOH 4 - 5 score. table 1.

Known composition for pigment form (PF) printing ink, comprising a copolymer of vinyl chloride, organic and inorganic pigments.

The disadvantage of this technical solution is the instability of the printed picture to the effects of weak salts, acids and alkalis.

The need for sustainability of the printed picture to the effects of these reagents is due to the fact that the printed material (dining oilcloth) in contact with food products that contain salty, acidic and alkaline environments, it leads to rapid abrasion of the printed image.

The purpose of the invention is the obtaining of printing ink for artificial CLASS="ptx2">

This objective is achieved in that the composition for pigment forms of printing ink, comprising a copolymer of vinyl chloride, organic and inorganic pigments, optionally contains a plasticizer, silicon dioxide, oleic acid, stearic acid calcium, and a copolymer of vinyl chloride with vinyl acetate contains from 12 to 16% of vinyl acetate in the following ratio, wt.h.:

The copolymer vinilla - reed-vinyl acetate 100 Pigments 40-70 silicon Dioxide 1-5 Oleic acid 1-3

Stearic acid calcium 0.5 to 3 Plasticizer 30-50

The collection of data essential features allows you to ensure this goal by increasing the density of the structured polymeric shell formed by adsorption on a solid surface of the pigment particles, the copolymer as a result of joint action of oleic acid and silicon dioxide. The use of PF that contains the data of the additive allows to obtain a printing ink high quality.

In the manufacture PF uses the following components: silicon dioxide (Aerosil) GOST 14922-77; oleic acid GOST 7580-55; copolymer VA-15 GOST 12099-75; stearic acid calcium THAT 6-14-722-76; di(2-ethylhexyl) phthalate /DOP) GOST with 8,728-th 5S TU 6-14-588-79; the yellow solid TO THE C-14-659-79), inorganic pigments (titanium dioxide GOST 9808-84).

Formulation of printing inks, wt.h.:

Polyvinyl chloride WM - penziony 100 Polymethylmethacrylate 0-80 Cyclohexanone 600-1200 ethyl Acetate 500-1220 Pigment form 20-90

Printing ink prepared by stirring (using a blade mixer at a temperature of 705about(C) printing varnish and pigment forms obtained in the form of granules or film.

The print on the film was produced on the printing and coating machine.

P R I m e R 1. Was previously prepared pigment form of the following composition, wt.h.: The copolymer VA-15 100 Oleic acid 1 silica 1 Plasticizer 30

The pure pigment blue phtalocyanines 50

Stearic acid calcium 0,5

The required number of components were mixed in the mixer for dry mixtures at a temperature of 40-50aboutC for 5 minutes Pigmentary form received on mixing rolls by mixing the composition at a temperature of 70aboutC for 5 min.

A printing ink was prepared according to the above recipe and technique.

P R I m e R s 2 and 3. Same as in example 1. Film properties are shown in table.

P R I m e R s 4-7. Same as in PR is hypoxia organic and inorganic pigments: /green phtalocyanines "W"; /red 5S; /a yellow solid; titanium dioxide.

P R I m e R s 8-9. Same as in example 1. However, the material properties are presented in columns 10 and 11 for values outside the minimum and maximum limits on all essential features.

P R I m e R s 10-11. Same as in example 1. Material properties are presented in columns 12 and 13 when the content in the composition of oleic acid beyond the minimum and maximum declared values.

P R I m e R s 12, 13. Same as in example 1. Material properties are presented in columns 14 and 15 when the content in the composition of silicon dioxide, beyond the minimum and maximum declared values.

P R I m e R s 14, 15. Same as in example 1. Material properties are presented in columns 16 and 17 when the content in the composition of the plasticizer beyond the minimum and maximum declared values.

P R I m e R s 16, 17. Same as in example 1. Material properties are presented in columns 18 and 19 when the content in the composition of the pigment chistogolovka phthalocyaninato beyond the minimum and maximum declared values.

Tests for resistance to weak salts, acids and alkalis were carried out according to GOST 11279.4-88 "Methods for the determination of color stability CB paint allows it to achieve its goals. In addition, the advantage of the proposed pigmentary form is to improve working conditions in pre-production with automated dosing and long-term storage final form of pigments.

COMPOSITION TO OBTAIN PIGMENTARY FORMS of PRINTING INK, comprising a copolymer of vinyl chloride, organic and inorganic pigments, characterized in that as a copolymer of vinyl chloride composition comprises a copolymer of vinyl chloride with vinyl acetate containing 12-16% vinyl acetate, and further comprises silicon dioxide, a plasticizer, oleic acid and stearinovokisly calcium in the following ratio, wt.h:

Copolymer of vinyl chloride with vinyl acetate - 100

Pigment - 40 - 70

Silicon dioxide - 1 - 5

Oleic acid - 1 - 3

Stearinovokisly calcium - 0,5 - 3

Plasticizer - 30 - 50

 

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