DE2361950C3 - Pigment printing paste - Google Patents

Description

With the iso-acids and iso-alcohols you can the technical isomer mixtures are advantageously used.

Suitable esters can be solid in their pure form at 40 ^{3 C.} However, the technical products that are preferred here are generally not pure with regard to both the acid and the alcohol component, but contain more or less large amounts of other esters. As a result, as well as, if appropriate, by mixing isomers, the melting point is lowered in the desired manner. It is crucial for the suitability of the esters that they are liquid in the mixture present in the printing paste. Whether a certain ester or a certain ester vegetable is ^{liquid or solid in a certain color paste at 40 °} C. depends, among other things, on which further additives the color paste contains

The production of the printing paste and the printing are carried out in the usual way.

The effect of the esters to be added according to the invention, which increases the color yield and brilliance, is surprising, especially since esters were known as wetting agents and the opposite effect is to be expected from such would have been, insofar as the wetting agent is a diffusion of the aqueous phase into the binding agent and contains pigments, favoring the interior of the textile structure, which is known to yield color and brilliance are weakened.

The parts and percentages given in the examples are based on weight.

example 1

I. 40 parts of a 26% strength aqueous dye paste (C. I. Vat Orange 7 - Cl. 71 103),

115 parts of a 6 ° / _o aqueous solution of ammonium polyacrylsauerem,

120 parts of a 40 ° / ₀ aqueous dispersion of a copolymer of 60% n-butyl acrylate, 25% styrene, 10% acrylonitrile, 4% N-methylolacrylamide and 1% acrylic acid,
0.5 parts triethanolamine,
3 parts glycerine,

721.5 parts of water are combined and homogenized with stirring. Man receives a printing paste.

Yes Another printing paste is produced like I, but replacing 40 parts of water with Citric acid tri-decyl ester, which can be found under high-speed Stir emulsified into the paste. Both printing pastes are used for printing in a known manner A mixed fabric made of 65% polyester is used on a standard roller blind printing machine and 35% rayon. The prints with the paste Ia are clearly deeper in color and more brilliant.

Example 2

100 parts of a 40 ° / ₀ aqueous suspension of a copolymer of 50 mole percent maleic anhydride and 30 mole percent of vinyl methyl ether and 20 mole percent of vinyl propionate in toluene are

Stirring crosslinked by adding 0.8 parts of glycol (temperature 50 ³ C) and then gen with 30 parts of a 25 ° _o l \ ammonia solution. After neutralization has taken place, 20 parts of water are added and the mixture is stirred to form a highly viscous paste.

I. 70 parts of this paste are with

Stirring 742 parts of water. Then one by one

150 parts of a 40 ° / ₀ aqueous dispersion of a copolymer of 80% ethyl acrylate, 15% acrylonitrile, and 5% N-methylol methacrylamide,

3 parts of 25 ° / _o aqueous ammonia solution,
10 parts of a 25 ° / _o solution of Diammon-

phosphate in water and
25 parts of a 30% strength aqueous dye paste (CI Pigment Blue 15) are stirred in and distributed homogeneously.
A printing paste is obtained in this way.

Yes In a printing paste prepared as I, 50 parts of water are replaced by an iso-heptadecanedicarboxylic acid di- (2-ethylhexyl) ester, which is emulsified into the paste while stirring at high speed.

Both printing pastes are used for printing in a known manner on a conventional rotary film printing machine a cotton fabric. The prints made with paste Ia are much deeper in color and more brilliant.

Example 3

I. 30 parts of a 30% strength, aqueous dye paste (C. I. Pigment Red 146 - C. I. 12 485),

115 parts of a 6 ° / _o aqueous solution of ammonium polyacrylate,

150 parts of a 45 ° / ₀ aqueous dispersion of a copolymer of 70% butadiene, 29% styrene, and 1% acrylic acid and

705 parts of water are combined and homogenized with stirring. You get a printing paste.

Yes Another printing paste is prepared as I, but replacing 40 parts of water with 40 parts of 1,2,4,5-benzene-tetra-carboxylic acid tetraisodecyl ester, which is emulsified with high-speed stirring into the other ingredients that have already been homogenized.
Both printing pastes are used to print in a known manner on a conventional flat-film printing machine an absorbent paper fleece which is slightly wet-resistant

65% bleached pine sulphate pulp and
35% bleached beech sulphite pulp

exists and has a basis weight of 130 g / m ^a . The prints made with paste Ia are significantly more level, deeper in color and more brilliant than with paste I.

Claims (1)

1 2 ^ 80 carbon atoms from an aromatic or Claim: aliphatic, saturated or monounsaturated, branched or cyclic carboxylic acid with 6 to Printing paste based on pigments, 30 carbon atoms and 1 to 4 carboxyl groups Water and binders and optionally 5 and an aliphatic, saturated or simple Additives such as dispersing, thickening, anti-unsaturated, branched or unbranched alcohol foam agents and catalysts, g e k e η n- with 1 to 30 carbon atoms and 1 to 3 hydroxyl marks by a content of 1 to 6 groups or a mixture of such esters, weight percent, based on the total paste. These pigment printing pastes are used for printing at least one in the paste at 40 ⁰ C as an emul- io flat structure. With "flat structures" are meant liquid esters present with a total of textiles, such as woven fabrics, knitted fabrics, also nonwovens, paper, 16 to 80 carbon atoms from an aromatic leather and synthetic leather. The material can be aliphatic, saturated or simply inorganic or natural, natural or saturated, branched or cyclic carbo-synthetic nature, if it has only a certain acid with 6 to 30 carbon atoms and 1 to 15 capillarity or porosity. Suitable are 4 carboxyl groups and an aliphatic, for example natural or regenerated cellulose, saturated or monounsaturated, branched wool, polyacrylonitrile, polyester, polyethylene, glass, or unbranched alcohol with 1 to 30 carbon but not metal or extruded plastic atoms and 1 to 3 hydroxyl groups or a foil. Mixture of such esters. 20 According to the state of the art, as a rule the thickening necessary for a printing paste Achieved emulsification of gasoline in water. The Ver- turning of gasoline has the same time the entrance The invention relates to pigment printing pastes for the advantages described in terms of brilliance and Production brilliant and strongly colored with pigments 25 color strength of the print. The consequence of this is that it printed planar structures, such as textiles, paper, are not readily available through a thickener that Leather and plastic, to a large extent or dissolves in the aqueous phase and this a high total exclusion of gasoline. They contain low viscosity mediated, can be replaced. Here creates Amounts of certain aliphatic esters. the present invention remedy. It is known that in textile printing with fiber-based dyes, 1 to 6, preferably 2 to 5, Gefinen dyes advantageously low-foaming, equal weight percent, based on the printing paste, at least sizing wetting agents can be used, which are one of those according to the invention The esters used in other esters of branched higher aliphatic result in the same brilliance and color strength of the carboxylic acids and branched or unbranched pressure as the approximately 10 to 1 times the amount by weight of higher aliphatic alcohols contain. A 35 gasoline. These esters are esters of such or similar at temperatures down to 40 ⁰ C in the color paste at least advantageous use, preferably up when pigment printing will not suggested 25 ° C, present as emulsified liquid. They are because the use of wetting agents in pigment printing built up from an aromatic or preferably leads to the fact that the dye penetrates deep into the fabric or aliphatic, saturated or monounsaturated, knitted fabric, which increases the color yield and the 4 ° branched or cyclic carboxylic acid with 6 up to 30, color brilliance can be set. preferably 6 to 20 carbon atoms and 1 to Customary pigment printing pastes are usually 4 carboxyl groups and one aliphatic, saturated or monounsaturated, branched or built on the principle of an oil-in-water emulsion. The presence of non-volatile gasoline, unbranched alcohol of 1 to 30, preferably in printing pastes of this type, ensures particularly 45 8 to 18 carbon atoms and 1 to 3 hydroxyl brilliance and strongly colored prints. The proportion of the group. The esters contain a total of 16 to 80 carbon atoms, and gasoline in these printing pastes is generally preferably 18 to 70 carbon atoms. They can be 50 to 70 percent by weight. When printing, these are also released into the atmosphere and wastewater, both in terms of acid and gasoline. Alcohol component - substituents such as hydroxyl-Such high amounts of gasoline are in the sense of 50 or carry phenyl groups or chlorine atoms. The environmental protection that should be strived for is no longer acceptable. Gere esters are too volatile, higher are at 4O ⁰ C in the Printing without gasoline leads to a less brilliant rule. For example: and prints with little color strength. The present invention was therefore the object isostearic acid ester of a technical isodecyl based on developing a pigment printing paste, the 55 ester isomer mixture, the production of brilliant and strongly colored pigment isononanoic acid l. ^ - dodecanediol diester, prints with largely or completely excluded iso-heptadecanedicarboxylic acid-di- (2-ethylhexyl) - of petrol and thus ester, while protecting the environment, allowed. Iso-dodecane-1.n-diacid-di-Cg-oxo alcohol ester, It has now been found that this object is achieved with citric acid fatty alcohol esters with 8 to 30 C by pigment printing pastes, consisting of min atoms in the alcohol residue, at least one pigment, water and binders bicyclo [2.2.2] oct-7-ene-2,3,5,6-tetracarboxylic acid and, if necessary, additives such as dispersant, tetra-iso-tridecyl ester, thickening agents, antifoam agents and catalysts, bicyclo [2.2.2] oct-7-ene-2,3,5,6-tetracarboxylic acid characterized by a content of 1 to 6 Ge-tetra- (2-ethylhexyl) esters, percent by weight, based on the total paste, min- 1,2,4-benzenetricarboxylic acid tri-isodecyl ester, at least one in the paste at 40 ° C as emulsified pyromellitic acid tetra-isodecyl ester, Liquid present ester with a total of 16 to pyromellitic acid tetra (2-ethylhexyl) ester.