CS275635B6 - Binder for pigment printing and dyeing of textiles - Google Patents

Abstract

The solution relates to a soft mixed binder based on acrylate copolymers for printing and dyeing with pigment dyes. The binder contains a mixture of two dispersion acrylate copolymers in a weight ratio of 90 to 40 to 40 to 60, one of which contains, in addition to conventional olefinically unsaturated monomers, at least 5% by weight of acrylic or methacrylamide or alkoxymethylacrylamide or alkoxymethylmethacrylamide with 2 to 5 carbon atoms in alkoxymethyl and the other contains, in addition to conventional olefinically unsaturated monomers, more than 50% by weight of alkyl acrylate, where alkyl has 3 to 6 carbon atoms, in combination with a dialkyl or diphenylpolysiloxane component with a viscosity of 50 to 50,000 mPa s in emulsion form, where alkyl has 1 to 2 carbon atoms, without or with modification of at least 1% by weight. % aminosilane, or EO-PO block copolymer, in a ratio of 1 to 15 to 100 parts by weight of the polysiloxane component to the mixture of the above acrylate copolymers

Description

The invention relates to a binder for pigment printing and dyeing textiles. Provides a soft feel to textile formations with high abrasion and light fastness.

Pigment dyes for varnishing textile materials are increasingly used. Simple fixation on practically all types and forms of textile products and lower production costs compared to other groups of dyes are, among other things, the main reasons for the growing importance of their use.

When printing or dyeing, pigment dyes are applied to the surface of textile structures purely mechanically by means of suitable binders. The properties of these binders are still a limiting factor for some purposes of using pigment dyes. Dyes with dye form films on the surface of the textile substrate after drying and fixing, which affect the feel of the product, all the more so the harder the film, the finer the fabric, the more porous and the like. For this reason, considerable attention has been and still is paid to the development of binders, focusing not only on the final feel, which should be as soft as possible, but also binding ability and resistance to washing baths or dry cleaning, which affects the consumer properties of printed or dyed products. .

According to prospectus materials or literature data, current binders are mostly based on suitable copolymers, in which the required properties are obtained by optimal selection of the ratio and properties of the individual basic monomer components. Due to the high requirements for the above properties, the pallet used was substantially narrowed to copolymers of butadiene-styrene, butadiene-acrylonitrile and acrylic acid derivatives.

Butadiene-based binders are relatively very soft and have a very good bonding ability and therefore good fastness to repeated washing, dry cleaning and dry and wet abrasion. However, their light stability does not meet current requirements. They age quickly and turn yellow, which greatly affects the hue and color fastness.

Binders based on acrylic acid derivatives show significantly better light fastness. However, with all the other positive features, they show a markedly stiffer feel, which limits their usability. Acrylic acid as a base allows a wide range of variants of derivatives based on polymers or copolymers with different film stiffness, which can optionally be further corrected by the addition of suitable plasticizers. However, experience has shown that the required softness of prints or dyeing with pigment dyes results in greater or lesser, but always reduced abrasion resistance. The combination of acrylate and butadiene types of binders did not bring significant improvement either.

The above-mentioned disadvantage is eliminated by the binder for pigment printing and dyeing of textiles based on specific systems of dispersion acrylate copolymers with the addition of polysiloxane additives. in a weight ratio of 90 to 10 to 40 to 60, wherein the dispersed acrylate copolymer A contains, in addition to other customary olefinically unsaturated monomers, at least 5 wt. % of acrylic or methacrylamide or alkoxymethylacryl or alkosylmethyl methacrylamide, wherein the alkoxymethyl has 2 to 5 carbon atoms and the second dispersed acrylate copolymer B contains, in addition to other customary olefinically unsaturated hydrocarbons, at least 50 wt. % of an alkyl acrylate, wherein the alkyl has 3 to 6 carbon atoms, and further from the polysiloxane component C, which is a dry matter mixture of the above copolymers A and B in a ratio of 1 to 15 to 100.

The polysiloxane component C used is a dialkylpolysiloxane, diphenylpolysiloxane or an α, ω-dialkyl or diphenylpolysiloxanediol having a viscosity of 50 to 50,000 mPa.s, where the alkyl has 1 to 2 carbon atoms, either as such or modified with aminosilane, epoxysilane or EO. -PO block copolymer.

CS 275635 B 6

Examples of the composition of the disperse acrylate copolymer A:

Composition of copolymers -% wt. AND II III styrene 25 27 - butyl acrylate 68 59 - methacrylamide - 10 - acrylic acid - 1 - methacrylic acid 4 - 1 acrylamide - - 5 ethyl acrylate - - 60 methyl methacrylate - - 30 N-methylolacrylamide - - 4 isobutoxymethyl methacrylate - 3 - N-isobutoxymethylmethacrylamide 3 - -

Examples of the composition of the dispersion acrylate copolymers B:

Composition of copolymers -% wt. AND II III acrylic acid 2 - 2 methacrylic acid - 1 - butyl acrylate 68 - - 2-ethylhexyl acrylate - 63 50 ethyl acrylate 30 - 48 styrene - 19 -

Components A, B, C have active substance contents in the range from 35 to 60% by weight.

By combining the individual components of the binder in the stated range of ratios, it is possible to control the properties of the film and thus also the printing or dyeing with pigment dyes. Against the prior art, a soft drop in pigment printing or dyeing (see table in Example 1) is achieved without affecting the abrasion stability. At the same time, all other stability is maintained, such as in water, washing, dry cleaning and the like.

The binder according to the invention does not differ from the commonly used binders in terms of application properties and conditions. It can therefore be used in the same concentration in all used prescriptions for printing pastes or dye baths when applying pigment dyes without changing the dosage of other necessary components of the application systems.

The binder can be used in all applications of pigment dyes. Machine cylinder printing, film printing, printing with flat stencils, rotary stencils and the like can be used for printing. In dyeing, all known methods of continuously applying a dye bath to textile sheets can be used, such as felting, some of the methods of minimal application, spraying and the like, with fulching being preferred as the most uniform. It also does not stick to the roll during rolling, which is a disadvantage of most acrylate dispersions. During dyeing, a non-creasing or chemical non-coagulating treatment can be carried out simultaneously by combining with the crosslinking agent and the catalyst in one bath.

CS 275635 Β 6

After printing or dyeing and drying, the binder must be crosslinked, which is the case with all types of acrylate binders by hot air treatment or steaming with superheated steam at atmospheric pressure in order to achieve optimal consumer properties and stability.

Example 1

The PES / b and 67/33 fiber blend fabric is printed with a paste consisting of

50.0 g C. I. Pigment Blue 15

950.0 g gasoline-free thickener.

000.0 g

The gasoline thickener has a composition

25.0 g thickener based on polyacrylic acid

20.0 g of urea

2.0 g nonionic emulsifier

120.0 g binder according to the invention, consisting of parts of copolymer A I 50% of parts of copolymer Β III 60% of parts of dimethylpolysiloxane of viscosity 350 mPa with 35%

15.0 g hexamethoxymethylmelamine 60%

5.0 g ammonia 24%

813.0 g water

000.0 g

After printing and drying, fixation is followed at 180 ° C for 30 seconds.

The following table shows the stiffness and abrasion stability achieved by the use of the binder according to the invention in comparison with the polyacrylic acid ester binders used:

rigidity mN abrasion binder used warp escape for drought for wet standard acrylic pojidio 13.92 7.34 3 to 4 2 to 4 soft acrylic binder 12.16 6.91 3 2 a binder according to the invention 10.60 5.92 3 to 4 2 to 3

Example 2

The viscose staple fabric is printed with a composition paste

40.0 g C.I. Pigment Orange 34

960.0 g semi-emulsion thickener

000.0 g

The semi-emulsion thickener has a composition

150.0 g sodium alginate 4%

12.5 g thickener based on polyacrylic acid. 20.0 g urea.

· 4.0 g nonionic. emulsifier

CS 275635 B 6 4

150.0 g binder according to the invention, consisting of Θ0 parts of copolymer A III 50% 20 parts of copolymer B II 50% of o, αΤ-diethylpolysiloxanediol with a viscosity of 8,000 mPa with 50%

200.0 g white spirit .3.0 g ammonia 24 ΐ

460.5 g water

000.0 g

After printing and drying, it is fixed for 35 s at 190 ° C.

Example 3

Printing the fabric with the printing paste according to Example 2, but the semi-emulsion thickener has the composition

150.0 g sodium alginate 4%.

12.5 g thickener based on polyacrylic acid

20.0 g urea

4.0 g nonionic emulsifier

150.0 g binder according to the invention, consisting of parts of copolymer A II 50% of parts of copolymer B II 50% of parts of copolymer -dimethylpolysiloxanediol, modified 5¾ epoxysilane with a viscosity of 22,000 mPa with 50 ¾

200.0 g white spirit

3.0 g ammonia 24%

460.0 g water

000.0 g

After printing and drying, it is fixed for 30 s at 180 ° C.

Example 4

Fabrics made of a mixture of PES / ba 50/50 fibers are dyed in an impregnating manner on a bath tub

3.0 g.l 1 C.I. Pigment Orange 34

50.0 g ^/.

15.0 gl ^- '''anti-migration agent

10.0 gl ¹ MgCl ₂ .6 H ₂ 0

1.0 gl ^- '' · wetting agent

After impregnation with a weight of 60%, the fabric is dried at 130 ° C and the dye is fixed for 20 s at 185 ° C.

During impregnation, the polyacrylate binder does not stick to the fulard roll.

Example 5

Cotton fiber fabrics are dyed in the impregnation manner of the bath

2.5 gl ^- '' CI Pigment Red 210.

70.0 g / ^- dimethyloldihydroxyethylene urea 50%

CS 275635 Β 6

50.0 g / ^l binder according to the invention, consisting of parts of copolymer A II 50% of parts of copolymer 40 I 40% of p-dimethylpolysiloxanediol modified with 3% aminosilane of viscosity 40,000 mPa with 60%

15.0 gl ” ¹ anti-migration agent

12.0 gl ” ¹ MgCl ₂ .6 H ₂ 0

1.0 gl ” ¹ wetting agent

After impregnation with a weight of 70%, the fabric is dried at 130 ° C and further heat-treated for 40 s at 180 ° C.

During impregnation, the binder does not stick to the fulard cylinder.

Example 6

Cotton fiber fabrics are dyed in the impregnation manner of the bath

5.0 gl ” ¹ CI Pigment Orange 34

50.0 g / ^{l of} dimethyloldihydroxyethylene urea

50.0 g / ^l binder according to the invention, consisting of parts of copolymer Al 50% of part of copolymer Β II 50% of parts of d, ar-dimethylpolysiloxanediol modified with 10% EO-PO block copolymer with a viscosity of 2,000 mPa with 50%

15.0 gl ” ¹ anti-migration agent

10.0 gl ” ¹ MgCl 1.6 H, 0

1.0 g.l citric acid

1.0 gl ^-1 nonionic wetting agent

After impregnation with a weight of 60%, the fabric is dried at a temperature of 130 ° C and further heat-treated for 25 s at 180 ° C. During impregnation, the binder does not stick to the fulard cylinder.

Claims (2)

PATENT CLAIMS A binder for pigment printing and dyeing textiles based on specific systems of dispersed acrylate copolymers with the addition of polysiloxane additives, intended for obtaining a very soft coloration discharge with high abrasion stability, characterized in that it contains two dispersed acrylate copolymers A and B by weight. ratio 90 to 10 to 40 to 60, wherein the dispersed acrylate copolymer A contains, in addition to other conventional olefinically unsaturated monomers, at least 5% by weight of acrylic or methacrylamide or alkoxymethylacrylic or alkoxymethylmethacrylamide, wherein alkoxymethyl has 2 to 5 carbon atoms, and a second dispersed acrylate copolymer B contains, in addition to other customary olefinically unsaturated monomers, at least 50% by weight of an alkyl acrylate, in which the alkyl has 3 to 6 carbon atoms, and a polysiloxane component C. having a viscosity of 50 to 50,000 mPa in an emulsion form based on dialkyl or diphenylpolysiloxane or tL, ar-dialkylpolysiloxanediol, wherein alkyl has a carbon number of 1 to 2, in a dry matter ratio of 1 to 15 to 100 parts by weight of polysiloxane component to mixture above said acrylate copolymers. 2. A binder according to claim 1, characterized in that the polysiloxane component having a viscosity of 50 to 50,000 mPa s comprises a dialkylpolysiloxane or a β-polysiloxanediol having a carbon number of 1 to 2, modified with at least 1% by weight of aminosilane, epoxysilane or EO-PO block copolymer. ^; .