CN104231723A - Colloidal-graphite-containing viscosity depressant for printing ink and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of offset printing and in particular relates to a colloidal-graphite-containing viscosity depressant for printing ink and a preparation method thereof. The colloidal-graphite-containing viscosity depressant for printing ink is prepared from the following raw materials in parts by weight: 10-13 parts of acrylic emulsion with solid content of 40-50%, 15-18 parts of diethylene glycol, 4-5 parts of Chinese wood oil, 1-2 parts of N,N'-ethylene bisstearamide, 1-3 part of polyisobutylene succinic anhydride, 1-3 parts of microcrystalline wax, 0.1-0.2 part of colloidal graphite powder, 2-3 parts of sorbitol anhydride monolaurate, 1-2 parts of alkyl dimethyl polysiloxane and 1-2 parts of auxiliary. The colloidal-graphite-containing viscosity depressant for printing ink has the advantage that acrylic emulsion, Chinese wood oil, microcrystalline wax and colloidal graphite ingredients are mixed for preparing uniform and stable emulsion, the preparation method is simple, no volatile toxic substance is produced, viscosity of printing ink can be rapidly reduced after the colloidal-graphite-containing viscosity depressant is added into printing ink, body of the printing ink is not damaged, wettability of the printing ink is improved, transferability is improved, and printing effect of the blended printing ink is excellent.

Description

A kind of ink viscosity depressant containing oildag and preparation method thereof

Technical field

The present invention relates to offset printing technology field, be specifically related to a kind of ink viscosity depressant containing oildag and preparation method thereof.

Background technology

In offset printing process, the viscosity of ink has larger impact to printing quality, when ink viscosity is excessive, and wiping weak effect, transitivity is poor, easy colored version, causes paper to occur the phenomenon such as plucking, shedding, in actual use, need to use viscosity depressant to reduce the viscosity of ink, commercially available viscosity depressant is mainly made up of Vaseline, wax class and oil substances, but this kind of viscosity depressant use range is narrower, and the inadequate environmental protection of production process.

Summary of the invention

The object of the invention is to, provide a kind of ink viscosity depressant containing oildag and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of ink viscosity depressant containing oildag and preparation method thereof, it is characterized in that, this viscosity depressant is made up of the raw material of following weight part: ACRYLIC EMULSION 10-13, the Diethylene Glycol 15-18 of solid content 40-50%, tung oil 4-5, ethylenebis stearic amide 1-2, polyisobutylene butanedioic anhydride 1-3, Microcrystalline Wax 1-3, oildag powder 0.1-0.2, sorbitanmonolaureate 2-3, alkyl-dimethyl based polysiloxane 1-2, auxiliary agent 1-2;

Described auxiliary agent is made up of the raw material of following weight part: 400-600 order talcum powder 1-3, glycerine 3-4, silicone emulsion 1-3, the inferior sodium phosphate 0.2-0.3 of solid content 50-60%, deionized water 4-6, preparation method is: be first dissolved in deionized water by inferior sodium phosphate, add talcum powder again, after grinding machine for grinding 30-40min sent into by gained material, gained material is at 60-80 DEG C after complete drying, to drop into again in glycerine, high-speed stirring is dispersed in glycerine to it, finally add silicone emulsion again, continue dispersed with stirring 1-2h, to obtain final product.

Described a kind of ink viscosity depressant containing oildag and preparation method thereof, its preparation method is:

(1) first Microcrystalline Wax is heated to 60-70 DEG C, after its complete melting, adds tung oil, ethylenebis stearic amide, sorbitanmonolaureate, high-speed stirring mixing 30-50min, stir and terminate rear mixture to be cooled to room temperature for subsequent use;

(2) by for subsequent use after oildag powder and alkyl-dimethyl based polysiloxane mixed grinding 20-30min;

(3) step (1) gained material is slowly added in ACRYLIC EMULSION uniformly, and constantly stir, after material adds, then add step (2) gained material and other remaining component, continue dispersed with stirring 1-2h, to obtain final product.

Viscosity depressant of the present invention is not containing the composition of the volatile harmful toxic matter of mineral wet goods, ACRYLIC EMULSION is mixed with compositions such as tung oil, Microcrystalline Wax, oildag powder, prepare a kind of uniform and stable emulsion, volatility toxicant can not be produced in its production process, add the viscosity that can reduce ink after in ink fast, do not damage ink body bone, improve the wettability of ink, improve and transmit transitivity, finally obtain gratifying printing effect.

Embodiment

Embodiment

The viscosity depressant of the present embodiment is made up of the raw material of following weight part: the ACRYLIC EMULSION 10 of solid content 50%, Diethylene Glycol 18, tung oil 4, ethylenebis stearic amide 1, polyisobutylene butanedioic anhydride 1, Microcrystalline Wax 2, oildag powder 0.1, sorbitanmonolaureate 2, alkyl-dimethyl based polysiloxane 1, auxiliary agent 1.

Wherein auxiliary agent is made up of the raw material of following weight part: the silicone emulsion 2 of 600 order talcum powder 2, glycerine 4, solid content 60%, inferior sodium phosphate 0.2, deionized water 5, preparation method is: be first dissolved in deionized water by inferior sodium phosphate, add talcum powder again, after grinding machine for grinding 40min sent into by gained material, gained material is at 60-80 DEG C after complete drying, to drop into again in glycerine, high-speed stirring is dispersed in glycerine to it, finally add silicone emulsion again, continue dispersed with stirring 1.5h, to obtain final product.

The preparation method of this viscosity depressant is:

(1) first Microcrystalline Wax is heated to 60-70 DEG C, after its complete melting, adds tung oil, ethylenebis stearic amide, sorbitanmonolaureate, high-speed stirring mixing 40min, stir and terminate rear mixture to be cooled to room temperature for subsequent use;

(2) by for subsequent use after oildag powder and alkyl-dimethyl based polysiloxane mixed grinding 30min;

(3) step (1) gained material is slowly added in ACRYLIC EMULSION uniformly, and constantly stir, after material adds, then add step (2) gained material and other remaining component, continue dispersed with stirring 1h, to obtain final product.

Add this viscosity depressant by 3% of ink by weight during use, printing after stirring, can be started.

Claims (2)

1. ink viscosity depressant containing oildag and preparation method thereof, it is characterized in that, this viscosity depressant is made up of the raw material of following weight part: ACRYLIC EMULSION 10-13, the Diethylene Glycol 15-18 of solid content 40-50%, tung oil 4-5, ethylenebis stearic amide 1-2, polyisobutylene butanedioic anhydride 1-3, Microcrystalline Wax 1-3, oildag powder 0.1-0.2, sorbitanmonolaureate 2-3, alkyl-dimethyl based polysiloxane 1-2, auxiliary agent 1-2;

Described auxiliary agent is made up of the raw material of following weight part: 400-600 order talcum powder 1-3, glycerine 3-4, silicone emulsion 1-3, the inferior sodium phosphate 0.2-0.3 of solid content 50-60%, deionized water 4-6, preparation method is: be first dissolved in deionized water by inferior sodium phosphate, add talcum powder again, after grinding machine for grinding 30-40min sent into by gained material, gained material is at 60-80 DEG C after complete drying, to drop into again in glycerine, high-speed stirring is dispersed in glycerine to it, finally add silicone emulsion again, continue dispersed with stirring 1-2h, to obtain final product.

2. a kind of ink viscosity depressant containing oildag and preparation method thereof as claimed in claim 1, its preparation method is:

(1) first Microcrystalline Wax is heated to 60-70 DEG C, after its complete melting, adds tung oil, ethylenebis stearic amide, sorbitanmonolaureate, high-speed stirring mixing 30-50min, stir and terminate rear mixture to be cooled to room temperature for subsequent use;

(2) by for subsequent use after oildag powder and alkyl-dimethyl based polysiloxane mixed grinding 20-30min;

(3) step (1) gained material is slowly added in ACRYLIC EMULSION uniformly, and constantly stir, after material adds, then add step (2) gained material and other remaining component, continue dispersed with stirring 1-2h, to obtain final product.