CS251465B1 - Processing agent intended for the processing of textile substrates - Google Patents

Abstract

The solution relates to a treatment agent intended for the refinement of textile substrates with adjustable hardness and adhesion, based on aqueous dispersions of thermosetting acrylate copolymers. The essence lies in the fact that thermosetting acrylate copolymers consist of a polymer component with a plasticizing effect, which consists of 20 to 30 wt. % styrene, 65 to 70 wt. % butyl acrylate, 1 to 5 wt. % isobutoxymethylacrylamide and 1 to 6 wt. % methacrylic acid and a polymer component with a hardening effect, which consists of 40 to 50 wt. % methyl acrylate, 40 to 50 wt. % ethyl acrylate, 3 to 7 θ/o wt. % methyl acrylamide and 1 to 5 wt. % N-methylolacrylamide, with the representation of individual types of copolymers being in the range of 0.1 to 99.9% by weight.

Description

I 251465 3

BACKGROUND OF THE INVENTION The invention relates to a treatment composition for hardening textile substrates with an adjustable hardness and a tacky base of aqueous dispersions of thermoreactive acrylate copolymers, wherein the conditions are chosen such that the appropriate selection of co-polymers and their representation results in a desiccant providing the desired the properties of the treated textile material such as hardness, tackiness, feel, dimensional stability, water resistance, resistance to chemical cleaning and others.

It is known that acrylate alone is a relatively complex copolymer of multiple components. In order to achieve the desired properties over a wide range, a number of these complex systems are required, which imposes high demands on the development of the production of individual dispersions. The present invention represents the composition and application described in the following patents: U.S. Pat. USSR No. 136 557, No. 219 198; pat. US 3 288 740, No. 3,389,110; pat. V. Brit. No. 1,001,715, No. 1,100,569, No. 1,132,265; pat. NSRč. 1,645,180; pat. Franc. No. 1478,487, No. 1,478,877.

Special attention deserves pat. U.S. Pat. No. 2,552,178, which addresses the stiffness and tackiness of a film acrylate reinforcing agent using an inert filler such as titanium dioxide, powdered asbestos or talc with a defined particle size.

The disadvantage of the known state is the fact that the selection of the individual components of the system as well as their percentage representation is usually done by the statistical method. This method, together with the choice of suitable test methods for the desired resultant fabric-treated fabric material, allows the desired properties of the textile substrate to be obtained. This state of the art now allows for the practical observation, only the empirical characterization of the application of acrylate dispersions to achieve the desired properties of textile substrates.

The above-mentioned drawbacks are eliminated by the present invention, wherein the treatment composition for the hardening and adhesive stiffness of textile substrates is based on aqueous dispersions of thermoreactive acrylate copolymers with a content of 2 to 55% by weight of a non-volatile component. with optional further auxiliaries from the group of crosslinking agents, surfactants, fillers, prepara- tions and colorants, is comprised of teroreactive acrylate copolymers consisting of a polymeric component with a plasticizing effect which consists of 20 to 30 wt. % styrene, 65 to 70% by weight of butyl acrylate, 1 to 5% by weight; % isobutoxymethylacrylamide and 1 to 6 wt. of methacrylic acid and of a polymeric component with a stiffening effect, which comprises 40 to 50% by weight of methyl methacrylate, 40 to 50% by weight of methyl methacrylate; % ethyl acrylate, 3 to 7 wt. % methylacrylamide and 1 to 5% by weight; N-methylolacrylamide, wherein the proportions of the copolymers are from 0.1 to 99.9% by weight. The advantage of the formulation agent of the invention is the fact that in its application! from a predetermined ratio of acrylate dispersions, we can determine the resulting adjustment effect. This is mainly the desirability of the required "hardness, tackiness, and hence the refinement of the refined fabric, the discovery of selected utility properties, in particular dimensional stability, water resistance and maintenance resistance by washing and chemical cleaning. Another advantage of the combination of the dressing composition with other additives for special treatment, e.g. hydrophobic, non-flammable, anti-microbial, non-soiling, dirt-proofing, anti-yarn treatment and the like. A suitable foaming agent may be applied to the fabric substrate in the form of a foam alone or with the addition of special treatment agents. Other advantages of the inventive sealing agent include ecological aspects, since the addition of a plasticizer component may limit or eliminate the addition of an external plasticizer that has a detrimental effect on the working environment and on the properties of the final product. , mainly from the durability of the plasticizing effect. These advantages are complemented by the technical and economic availability of the basic ingredients and the inexpensive implementation of the textile refining in the operating conditions.

The composition according to the invention can be used in the treatment of woven and non-woven fabrics with a smooth, hair-like structure using, for example, effective yarns. It can be applied as a bond layer, an impregnating agent, a foam, a discrete layer in the form of drops, a binder for bonding short-fiber particles - flakes, a binder for multi-layered aggregates and the like.

The processing medium of the present invention is documented, but not limited, by the following example. Example

Processing composition comprising a ter-moreactive type A acrylate copolymer (polymeric plasticizer) with a composition: styrene - 26% by weight. butyl acrylate - 68 wt. isobutoxymethylacrylamide - 3% by weight methacrylic acid - 3% by weight. and a thermoreactive type B copolymer (polymeric hardener component) comprising: methyl methacrylate - 45 wt. ethyl acrylate - 46 wt. methylacrylamide - 6 wt. N-methylolacrylamide - 3% wt.

Claims (1)

The following table shows the variation in the changing weight ratio of said copolymer A and B copolymers. Table weight% B Hardness according to ČSN 673076 Adhesion * Minimum film-forming temperature * (° C) 99,9 80 2,000 20,5 90 67 2,000 20,5 80 54 2,000 20,5 70 43 2,000 18 , 0 60 32 1500 14.0 50 22 1000 9.0 40 13 500 6.0 30 7 20 2.0 20 4 20 2.0 10 3 20 2.0 0.1 2.2 20 2.0 * J Šňupárek ml., L. Formánek: Aqueous Dispersions of Synthetic Polymers, SNTL, Prague 1979, p. 175; 173; OBJECT OF THE PREPARATION A treatment composition for the hardening of textile substrates with adjustable hardness and tackiness, based on aqueous dispersions of thermoreactive acrylate copolymers with a non-volatile content in the range of 2 to 55% by weight. with optionally further auxiliaries of a group of cross-linking agents, surfactants, fillers, preparations for special treatment of aberrations, characterized in that the thermoreactive acrylate copolymers consist of a polymeric component with a plasticizing effect, the invention comprising 20 to 30% wt. % styrene, 65 to 70 wt. % butylacrylate, 1 to 5 wt. % isobutoxymethylacrylamide and 1 to 6 wt. methacrylic acid and a polymeric component with a hardening effect, which consists of 40 to 50% by weight. % methyl methacrylate, 40 to 50 wt. % ethyl acrylate, 3-7% by weight of methyl acrylamide and 1-5% by weight. N-methylolacrylamide, wherein the proportions of the individual copolymers are in the range of 0.1 to 99.9% by weight.