Composition for treatment of porous surfaces


D21H19/02 - Metal coatings (D21H0019660000 takes precedence);;

 

(57) Abstract:

Use: for surface treatment of porous substrates such as paper, concrete or wood. The inventive mixed in wt.h: latex 100; urea 5-8; aminecontaining compound is 0.01-0,064. As a latex, a mixture of polystyrene and butadienestyrene latex in a ratio, respectively, from 1.5: 1.0 to 4:1. As aminecontaining compounds are used urea-formaldehyde resin modified with epichlorohydrin, or Bodmin 115, or ketamin AB, or aminobutyric acid or aminocaproic acid, or an aminobenzoic acid. table 1.

The invention relates to the preparation of the composition for surface treatment of porous substrates such as paper, concrete or wood.

Well-known practice of improving the quality and expanding the range of, for example, paper products Wallpapers, due to their surface treatment that creates a protective surface film. To create such a protective film is most suitable compositions based on polymeric water-insoluble substances in the form of aqueous dispersions. As the dispersion of materials in such compositions are widely used betadecay essence and the achieved result is a composition for treatment of porous surfaces mainly, the paper containing polystyrene latex and butadienestyrene latex [2]

The composition contains polystyrene latex and butadienestyrene latex at a ratio respectively of from 1:1 to 5.2:1.

Known composition being applied to the paper substrate, increases the whiteness of the product, but also greatly improves the printing properties that occurs due to use as filler homopolymer and get opaque coverage.

However, the achieved increase in white enough.

The aim of the invention is to increase the whiteness of the paper substrate, as well as expansion of the range causing equipment as a result of increasing resistance of the composition to mechanical stress during use of the composition for application.

This is achieved by a composition for treatment of porous surfaces containing polystyrene latex and butadienestyrene latex, further comprises urea and aminecontaining compound selected from the group consisting of urea-formaldehyde resin modified with epichlorohydrin Bodmin, katamin AB, aminobutyric acid, aminocaproic acid and aexav), wt.h. the latex mixture 100; urea 5-8; aminecontaining compound of 0.001-0,064.

The composition contains polystyrene and butadienestyrene latexes at a ratio respectively of from 1.5:1 to 4:1.

The composition has high aggregative resistance in conditions where there are large mechanical impact during application of the composition on the surface by conventional spray or doctorname shafts. Achieved the specified property of the composition due to the introduction of urea. However, the urea being introduced in the composition constituting the aqueous dispersion may be subjected to hydrolysis and lead to undesired destabilization of the latex. To ensure that this did not happen, in part prompted to enter the aminecontaining compound selected from the group consisting of urea-formaldehyde resin modified with epichlorohydrin, Bodmin, katamin AB, aminobutyric acid, aminocaproic acid and leinosentie acid acts as a stabilizer of urea.

Used in the proposed composition of Bodmin and ketamin AB mastered by the industry and are available on the following regulatory documents.

Katamin AB technical about the; admin 115 technical product produced according to TU 6-10-21-89.

The invention is illustrated by the following examples.

Example 1. Composition for coating a paper substrate is prepared by mixing the components with their following ratio wt.h. butadienestyrene latex (DMA-GP) 30; polystyrene latex (PS-100) 70; urea 8; Bodmin 115 0,064.

The mixing is carried out in the mixer frame type with speed 60-100 rpm the Order of mixing the following components. The apparatus is poured while stirring butadiene-methylmethacrylate latex, polystyrene latex, urea and Bodmin.

The resulting composition with a viscosity of 12 to 14 with the OT-4 is applied onto the paper pneumospray. A lot of nanos 15 g/m2.

The test results of the finished product is presented in the table.

Example 2. The composition of the coating to the paper substrate prepared by mixing the following components at a ratio, by weight.h. DMA-65 SE 20; PS-100 80; urea 5; ketamin AB 0,0025.

Mixing carried out analogously to example 1. The resulting composition with a viscosity of 12-14 put on paper. A lot of nanos 15 g/m2.

The test results of the finished product presented to the I following components at a ratio, wt.h. DMA-HP 40; PS-100 60; urea 8; aminobutyric acid of 0.01.

Mixing carried out analogously to example 1. The resulting composition with a viscosity of 12-14 to put on a paper using the gun. A lot of nanos 15 g/m2.

The test results presented in the table.

Example 4. Composition for application to a paper substrate prepared by mixing the following components at a ratio, by weight.h. DMA-HP 30; PS-100 70; urea 10; aminobutyric acid 0,004.

Mixing carried out analogously to example 1. The resulting composition with a viscosity of 12-14 to put on a paper using the gun. A lot of nanos 15 g/m2.

The test results presented in the table.

Example 5 (the prototype). composition for application to a paper substrate prepared by mixing the following components at a ratio, by weight.h. PS-100 50; DMA-65 SE 50.

The maturation of the mixture is performed within 24 hours the resulting composition with a viscosity of 12-14 to put on a paper basis using pneumonocytes. A lot of nanos 15 g/m2.

The test results of the finished product is presented in the table.

The use of the proposed composition can achieve a high level of whiteness and the t to use pneumocephaly and doctordee shafts, i.e., causing the equipment, which causes large mechanical impact on the stock.

When using pneumonocytes and gear shafts proposed composition behaves normally, not coagulates and being put on such a porous substrate like paper, wood or concrete, allows to obtain a treated surface.

Composition for treatment of porous surfaces containing polystyrene latex and butadienestyrene latex, characterized in that it further contains urea and aminecontaining compound selected from the group consisting of urea resin, modified with epichlorohydrin, Bodmin 115, katamin AB, aminobutyric acid, aminocaproic acid or aminobenzoic acid in the following ratio, wt.h.

The latex mixture 100

Urea 5 8

Aminecontaining compound of 0.01 0,064

while polystyrene latex and butadienestyrene latex taken at their value, respectively, from 1.5 to 1 to 4 to 1.

 

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