Composition for printing products with pvc film coating

 

(57) Abstract:

The invention relates to patterned colors fibrous polymeric materials and, in particular, to the process of printing products with PVC film coating. In contrast to the known printed compositions similar purpose proposed composition contains an acrylic binder together with precondensation thermosetting salt with the additional introduction of a special drug (MK-1), which is a mixture of polyethylene emulsion and silicone compounds. In the proposed structure drastically reduced concentration of organic solvents. Its formulation includes the following components, wt.%: organic pigment - 1,5-7,0; polyvinylchloride resin is 1.0 to 1.5; organic solvent - 3,0-5,0; acrylic emulsion - 8,0-10,0; precondensed thermosetting resin - 4,0-5,0; the catalyst is 0.5 to 1.0; the plasticizer is 2.0 - 2.5; drug MK-1 - 1,0-2,0; thickener (3,5-7,0% aqueous p-p) - else. As a result of applying the proposed composition of the opportunities of color design products with a film coating due to the implementation of textile pigments, improved working conditions due to the reduction of the concentration of the organisation is continuing its stickiness with increasing water-repellent properties. The use of the proposed structure can be implemented at the enterprises, which will include drawing pictures on products with PVC film coating (artificial leather, dining oilcloth and others). 5 table.

The invention relates to processes of dyeing and finishing production and, in particular, compositions for patterned coloring products with a film of polyvinylchloride (PVC) coating.

Known compositions for printing on products with PVC film coating containing polyvinyl chloride (PVC) resin, the binder (for example, polymethyl methacrylate, a copolymer of vinyl acetate with acrylic compounds, polyurethane dispersions, and others ), organic solvent (cyclohexanone, ethyl acetate, isopropanol and others) in high concentrations (60-80% ), plasticizer (alkylphenolate), and adjuvants [1, 2] the Use of these compounds difficult, due to the presence in the printing inks of a large number of organic solvents and the need to remove vapors from the work area with subsequent regeneration in special units. Drawing pictures on the product can be made on the equipment for gravure printing firm "Colombo" with pomoshyu m/min.

It is also known the use of compounds with palaemoninae sagastume based gasoline fractions, binder and cross-linking agents, polyurethane latexes (e.g., TIC-85) and dispersions [3]

Closest to the invention is a composition designed to produce drawings on products with PVC film coating using dyes, soluble in organic solvents, the receipt of which includes the following components [4] wt.

PVC resin (C 7058M, C 7059M) 5-6

Polymethylmethacrylate (SALW-M) 2-3

Cyclohexanone 30-50

The ethyl acetate 60-40

Microlith (dye) 3-1

May be replaced with ethyl acetate to butyl acetate (50%), polymethylmethacrylate on methacrylate-90. In the preparation of printing inks for color Pets introduction microliths to 2.5 wt.h. on 100 wt.h. PVC resin.

Preparation of printing inks is long (2-3 h) the dissolution of PVC resin in organic solvents in combination with methyl methacrylate and solutions microliths. After mixing of the components of the printing ink is brought by ethyl acetate to a viscosity (3010 with the device VZ-246 or 2-5 Pas). The dry residue 113% When using organic pigments p is VCE to obtain particles with a size of not more than 3010-6m (these pigments do not include grades for use in the textile industry).

In the process of drawing on products with PVC coating printing ink is applied to the shaft gravure printing, where the excess skin is removed squeegee having a reciprocating motion. After drawing each figure, the material is dried with hot air at a temperature of 95-130oC.

When applying this composition may receive enough of bright colors with limited resistance to friction.

The disadvantages of this structure are: the difficulties associated with the use of high concentrations of cyclohexanone and ethyl acetate in the stages of preparation, use and storage of printing inks (toxicity, explosion and fire hazards, deterioration of working conditions, the need for special equipment for ventilation and vapor recovery and others); the reduction of mechanical strength of the PVC-film coating, due to the high solvent concentrations, increasing its stickiness; lack of stability of the colors, especially the wet friction; the need to use a limited range of special dyes (microliths).

the basis of textile pigments with a low concentration of organic solvent (cyclohexanone) and auxiliary products provide a stable fixation of the pigment particles on the surface of the film PVC coating. The application of the proposed structure allows to increase the strength of colors to friction and mechanical strength of the PVC-film coating while reducing its stickiness and making hydrophobic effect.

The task is achieved by the fact that the composition of the printing inks to get the picture on the products with PVC film coating comprising an organic pigment, PVC resin, and the binder and the plasticizer is introduced organic solvent (cyclohexanone) in low concentration, foaming agent, precondensed thermosetting resin, a crosslinking catalyst, a thickener and a mixture of polyethylene emulsion with the organic silicon compound (drug, MK-1) in the following ratio, wt.

Organic pigment 1,5-7,0

PVC resin 1,0-1,5

Cyclohexanone 3,0-5,0

The foaming agent (acrylic emulsion) 8,0-10,0

Precondensed thermosetting resin 4,0-5,0

The catalyst for the crosslinking of 0.5-1.0

The plasticizer (dioctylphthalate) of 2.0-2.5

A mixture of polyethylene emulsion and silicone compounds (drug, MK-1) 1,0-2,0

Thickener (3,5-7,0% aqueous p-which, after drying (50-60oC) heat treated at 110-135oC. under these conditions, there is a superficial dissolution of the PVC film under the action of small amounts of cyclohexanone and are prerequisites for maintaining its mechanical strength while reducing the stickiness of the material and products based on it. Surface dissolution of the film at the same time contributes to a more durable adhesive fastening tapes that hold the particles of the organic pigment. Increasing the strength of the colors to the friction caused by the use as the film-forming acrylic emulsion containing carboxyl groups with a high affinity (adhesion) to the polyvinyl chloride. Properties of acrylic emulsion are shown in table.1.

Finally, the fixation of pigment (including stamps for the textile industry) with the formation of stains, resistant to abrasion, is achieved with the proposed composition of precondensed thermosetting resins, which contributes to hardening colors on the mechanism, known for the traditional technology of printing fibrous textile materials pigments (in the presence of a catalyst stitching).

Thus, the distinctive Pris PVC-film coating and adhesive securing it to the pigment in the film binders for textile printing mechanism.

Another distinctive feature of the proposed printed composition is the use of it together with the plasticizer of the drug MK-1, the properties of which are reflected in the table.2.

The use of this drug, together with the plasticizer (dioctylphthalate) gives the film printing inks and printed material increased softness and elasticity due to the presence in its composition of a polyethylene emulsion. However, the presence of organosilicon component informs PVC film increased hydrophobic properties, reduces its stickiness, the overall consumer quality printed products, including increasing the strength of colors to friction when using pigments intended for the textile industry.

The achievement of these positive effects of using the claimed composition is possible if the exact recommended intervals concentrations of its components, the optimal values are due to the following reasons:

the amount of pigment is selected based on the requirements coloration design products with PVC coating;

the content of the PVC resin is reduced several times on sravnenie;

acrylic emulsion is introduced into the composition in an amount to provide a permanent, elastic, transparent and mechanically strong film, able to retain particles of pigment dye;

the concentration ratio of film-forming substance, precompensate thermosetting resin and a catalyst for crosslinking is common for the technology textile pigment printing;

the amount of thickener is determined by its thickening ability, which depends on the viscosity of the printing ink. The latter should have the value of providing the product with PVC-coated figure with a clear path, high rownameu and colour intensity. Recommended thickeners these concentrations are (in aqueous solution) value of from 3.5 to 7.0%

the concentration of the drug MK-1 lies in the range of 1.0 to 2.0% since the deviation from these values, and in the absence of this drug indicators of quality printed PVC film coating is markedly reduced (table.3).

Given the characteristics of the properties of the other components of the inventive printed composition:

the dioctylphthalate (di-2-atraxis-phthalate) (GOST 8728-77) low-toxic product with MPC-1 mg/m3. BR>
PVC resin (brand C7058 M and C 7059 M) (GOST 14332-78). Is a homogeneous white powder with MPC, mg/m3: PVC-dust-6,0; vinyl chloride 30,0; HCI-5,0; CO-20,0. Flash 624oC; the Autoignition temperature of 500oC;

precondensed thermosetting resins: in the inventive composition is recommended to use the well-known finishing products of this type (metasin, glycitin, carbamoyl TSEM) and new drugs for a similar purpose, the properties of which meet the following requirements:

metasin GY (TU 6-14-700-82) a mixture of derivatives of methylaniline, colorless, clear, thin liquid mass fraction of the main substances, 68-70; pH of 7.5-8.5; mass fraction of free formaldehyde and not more than 0.75; the warranty period of storage, not more than 8 months.

carbamoyl MT-2 (TU 2484-120-0574685-93) composition based on dimethyldodecylamine, light yellow mobile liquid mass fraction of the main substances 67-68% pH 10% solution of 7.5-8.5; mass fraction of free formaldehyde and not more than 0.75% guaranteed shelf life not more than 2 months.

In table.4 shows specific examples of compositions for preparation of drawings for products with PVC film coating.

According to the proposed technical re is Italia specified concentration injected PVC resin, pre-dissolved in cyclohexanone, and then dioctylphthalate, acrylic emulsion, precondensed thermosetting resin, the drug MK-1 crosslinking catalyst and pigment. The resulting composition was thoroughly mixed until a homogeneous mass is required for printing viscosity (2-4 fold or 30 with the device VZ-246).

In table. 5 presents comparative data on qualitative indicators of printing products (two types) with PVC film coating using featured in the application (examples 1-5) and of known composition, by which you can judge the advantage of the proposed compositions compared to the prototype.

Composition for printing products with PVC film coating comprising an organic pigment, a polyvinylchloride resin, cyclohexanone and acrylic binder, characterized in that as an acrylic binder, it contains acrylic emulsion of butyl acrylate, methyl methacrylate and methacrylic acid at a mass ratio of their 55 38 7 and additionally precondensed thermosetting resin, a crosslinking catalyst, a plasticizer, a drug MK-1 on the basis of polyethylene emulsion and silicone compounds and thickener in the form 3,5 7,0% aqueous who Oriana resin 1,0 1,5

Cyclohexanone 3,0 5,0

Acrylic emulsion based, butyl acrylate, methyl methacrylate and methacrylic acid 8,0 10,0

Precondensed thermosetting resin 4,0 5,0

The catalyst for the crosslinking 0,5 1,0

The plasticizer 2,0 2,5

The drug MK-1 on the basis of polyethylene emulsion and organosilicon 1,0 2,0

Thickener (3,5 7,0% aqueous solution) Ostalnoe

 

Same patents:

FIELD: textiles and paper.

SUBSTANCE: non-woven fabric is proposed, on the visible surface of which the ink composition is applied comprising from about 40 wt % to about 80 wt % of the dry weight of the ink of linking agent - aziridine oligomer with at least two aziridine functional groups. Also an absorbing article is proposed comprising a liquid-permeable upper layer, an absorbing core and a liquid-impermeable lower layer that contains the specified non-woven fabric with the said applied ink composition. The application of ink on the non-woven fabric can be carried out by the method of flexography or a method of ink-jet printing.

EFFECT: printed non-woven fabric has high resistance to abrasion even in case of its contacting with fatty substance.

16 cl, 2 dwg, 2 tbl, 2 ex

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