The way to obtain dye compositions for polymeric materials

 

(57) Abstract:

Purpose: universal ink composition for coloring polymers and materials based on them. Universal ink composition was prepared in the extruder by the softening at 80 - 90oWith a mixture of a carrier and a dye stuff, extruding the melt at 100 - 110oWith, cooling and pelletizing. At the same time as media use ataxiophobia with a molecular mass of 800 - 4500, epoxy 2 - 11% and an acid number of 0.3 to 3.0 mgKOH/g General formula given in the description. The mass ratio of epoxyoligomer: dye 95 to 20 : 5 to 80. Pigment concentrate evenly and intensely stains the various polymers with good light and migration fastness. 3 table.

The invention relates to a method for coloring compositions for reduction of various polymers and materials based on them.

Staining of polymers in bulk directly when their processing is hindered by insufficient thermal stability of the majority of the coloring matter, a significant expense, the necessary processing of the granules excipients to increase the adhesion to them viscozisers the Torah during the transition from one color to another, a possible decrease of durability of products with the introduction of pigments into the polymer mass [1]

The most promising is the coloration of polymers using compositions with a high content of pigments and dyes [2,3]

However, the main disadvantages of these compositions are: low thermal and migration resistance, toxicity and the presence of a large number of agglomerates.

Known composition for coloring powdered polymers of polyethylene wax [4]

This composition improves the compatibility of the polymer with pigment to achieve uniform dispersion of pigments.

However, painted the proposed composition of the polymer composition has a low heat and light resistance and has a low migration resistance.

In industry widely used concentrates of pigments (CSP) [5]

For example, an SCP-301 yellow (TU 6-05-05-149-81) includes, cadmium yellow 30; titanium dioxide 10; high-pressure polyethylene 24; polyethylene wax 36.

UPC add to the unpainted thermoplastic (polyolefin) in the process of processing material in the amount of 4% to obtain a colored film materials. However, the quality of the magnetic resonance dispersion. When mixing the UPC with the polymer is not uniform dyeing plastics, especially plastic materials. In addition, the composition has a low thermal stability due to the presence of low molecular weight compounds of polyethylene wax, as well as poor resistance to sweetalba aging. You should indicate high toxicity RMS due to the presence of cadmium.

A method of obtaining compositions with a high content of pigments [6] which includes the following stages:

premixing of the components;

plasticize initial mixture components;

the extrusion of the melt;

granulation.

The disadvantages of this method are:

the duration of the technological process;

elevated temperature mixing components of the composition;

the presence of agglomerates;

uneven coloring and limited color gamut;

reduced physical and mechanical characteristics of colored products.

Object of the invention to develop a method of obtaining universal dye compositions, allowing evenly and intensively to paint different polymers to reduce the temperature and duration This is achieved by in the method of obtaining universal dye compositions as media use ataxiophobia with m m 800-4500, epoxy number of 2-11% and acid value of 0.3 to 3.0 mgKOH/g General formula:

CCH-CH2-OR-O-CH2--CH2-C-M (I) where R is the residue of epoxy resins containing aromatic and/or aliphatic chain;

M aryl, alkyl or hetaryl

when the ratio of the components epoxyoligomer: dye (95-20): (5-80), respectively, plastical mixture is carried out at 80-90aboutWith, and extruding the melt at 100-110aboutWith subsequent cooling of the melt and granulating.

The proposed method allows to obtain universal colouring composition based on apocolyptica, dyes and pigments of different chemical nature for the dyeing of various classes of polymers, such as polyolefins, polyvinyl chloride, polystyrene, polyacrylates, and other Specified coloring composition obtained by dispersing the melt resin carrier pigments and/or soluble in organic dyes. The variation in the length and composition of the oligomeric chain and modifying the remainder of the carboxylic acid (M) it is possible to achieve properties of the proposed resin composition, need to be universalhospitals with different polymers within significantly greater than the content of pigments in the polymer, required to obtain intense colors in a variety of colors. In addition, there is a number of additional positive effects, which are usually achieved by the introduction of special additives in polymer compositions. As a colouring substance use organic and/or inorganic pigments, polimerisation dyes, including oligomeric and their mixtures, for example:

the pigment cadmium yellow;

titanium dioxide rutile modifications;

pigment red; pigment red 5S;

pigment blue phtalocyanines;

the fat-soluble dye yellow "W";

N-CH3< / BR>
the fat-soluble dye green antrahinonovye.

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P R I m e R 1. In the granulator (extruder) continuous load epoxyoligomer 1 (see tab. 1) and pigment blue phtalocyanines alpha stable modification in the ratio of 80:20. The process of softening is carried out at 80-90aboutWith, and extruding the melt at 100-110aboutC for 3-4 min Obtained the composition of the coloring matter in the form of paste is applied to the paint alkyd or unsaturated polyester lacquers and enamels, nitrocellulose materials, as well as various thermoplastics.

P R I m m e R 2. is Oseni 50:50. The process of softening is carried out at 80-90aboutWith, and extruding the melt at 100-110aboutC for 3-4 min Obtained the composition of the coloring matter in the form of paste is used for coloring paints and various polymers.

P R I m e R 3. In the granulator continuous load epoxyoligomer 3 (see tab.1) and the pigment cadmium yellow in the ratio of 70:30. The process is conducted as described in example 1. The resulting composition is applied as described in examples 1 and 2.

P R I m e R 4. In the granulator download epoxyoligomer 4 (see tab.1), pigment blue phtalocyanines and titanium dioxide in a ratio of 80:10:10. The process is conducted as described in example 1. The resulting composition is granulated using a cooling head. Granules are spherical or cylindrical shape with a size of 3-5 mm are used for the dyeing of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyacrylates, polyurethanes and other thermoplastic.

P R I m e R 5. In the granulator download epoxyoligomer 5 (see tab.1), the pigment cadmium yellow and titanium dioxide in a ratio of 80:15:5. The process is conducted as described in example 1. The obtained pellets of the composition of the coloring matter used as described in example 4.

P R I m e R 7. In the granulator download epoxyoligomer 7 (see tab.1) and the dye green antrahinonovye in the ratio 20:80. The process and obtaining pellets as described in example 4. The application described in example 6.

P R I m e R 8. In the granulator download epoxyoligomer 8 (see tab.1), a fat-soluble dye green antrahinonovye and titanium dioxide in a ratio of 60:35:10. The process of obtaining a composition and its use is described in example 4.

P R I m e R 9. In the granulator download epoxyoligomer 9 (see tab.1), a fat-soluble dye yellow "W" and titanium dioxide in a ratio of 60:35: 10. The process of obtaining a composition and its use is described in example 4.

P R I m e R 10. In the granulator download epoxyoligomer 10 (see tab.1) and pigment red 5S in the ratio of 60:40. The process of obtaining and applying the composition carried out as described in example 4.

On the basis of the obtained compositions dyes are made of painted resin composition with the content of the coloring matters of 0.3% Properties of dye compositions and coated polymeric materials are given in table.2 is significant (1.5-3 times) to improve the physical and mechanical properties of various colored polymeric materials, to increase light and migration fastness, to reduce processing time and reduce energy consumption and to extend the field of application of the new compositions of dyes. High coloring ability of the proposed compositions allows 5-10 times to reduce the content of the coloring compositions of the coated polymeric material in comparison with traditionally used concentrates of pigments.

The WAY to OBTAIN DYE COMPOSITIONS FOR POLYMERIC MATERIALS, including media and the coloring matter into the hopper of the extruder, plastical their mixture, extruding the melt, followed by cooling and granulating, characterized in that as the carrier used aphasiology with a molecular mass of 800 - 4500, epoxy 2 - 11% and an acid number of 0.3 - 3.0 mg KOH/g General formula:

< / BR>
where R is the residue of epoxy resins containing aromatic and/or aliphatic chain;

M - aryl, alkyl or hetaryl,

when the mass ratio epoxyoligomer : colorants 95 to 20 : 5 to 80, respectively, plastical mixture is carried out at 80 - 90oWith, and extruding the melt - in 100 - 110oC.

 

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