Composition for sheet kriostrukturirovaniya collagen containing material

 

(57) Abstract:

Usage: recycling of tannery waste and manufacturing leather imitation materials for footwear and leather industry. The inventive cryostructures composition contains, by weight.h.: dispersed newblance collagen containing raw materials from the skins of cattle 0,005-0,5; water-soluble melamineformaldehyde resin is 0.3 to 1.5; spongy waste tanned with chromium salts leather 3-6; sodium carbonate is 0.5 to 1.5, water 92-96,6, the pH of the composition is 7-10. table 1.

The invention relates to the leather industry, as it includes the composition of the waste of skin and a crosslinking agent to obtain a sheet kriostrukturirovaniya leather imitation material collagen type, which can be used in the footwear, leather industry, as well as for the walls, such as the cabin of a vehicle.

Known composition from a mixture of waste tanned and redoubling skin and formaldehyde as a crosslinking agent for ristrutturare order to obtain a collagen sheet leather imitation material. However, obtained from this composition sheet leather imitation material has h the th and redoubling skin and urea-formaldehyde resins as crosslinking agent for sheet leather imitation material made of collagen without ristrutturare. While urea-formaldehyde resins used in water-soluble form in the hydrophobic phase as colloidal aqueous dispersion. When it is added to the aqueous collagen dispersion is absorbed resin fibers. Next enter the water dispersion or emulsion adhesive agent, postponed the fibers on the surface of the cationic resin. Stage ristrutturare is missing, the resulting material has a low porosity and high rigidity, which brings it closer in properties to cockatoo, and not to an elastic porous skin.

Also known composition for sheet kriostrukturirovaniya collagen containing material [1] containing dispersed newblance collagen containing raw materials from the skins of cattle, polymer cross-linking agent is a water-soluble melamineformaldehyde resin, a pH regulator and water. The resulting material has insufficient mechanical strength.

An object of the invention is the improvement of physico-mechanical properties kriostrukturirovaniya collagen leather imitation material.

To achieve these objectives, the composition as a pH regulator contains carbonate intothree the W in the following ratio of the components of the composition, wt.h. Dispersed newblance collagen - containing raw materials from skins of large horn - cattle (counting on dry matter) of 0.005 to 0.5 water Soluble melamine-formalde - Gena resin is 0.3 to 1.5 Spongy waste tanned Sol - mi chrome leather (counting on the dry matter) 3-6 sodium Carbonate is 0.5 to 1.5 Water 92-96,6

As a raw material containing collagen from the skins of cattle use, for example, holeway split hides and skins of bovine (TU 17-06-89-93) or spillway parings of hides of cattle (TU 17-422-74). Getting dispersed nedubrovo collagen containing raw material is carried out according to the method of obtaining collagen paste [2]

Spongy waste tanned with chromium salts leathers are obtained by razvlechenija waste tanned with chromium salts skin in a known rasoolallah type ROLL (Germany) or Conduct. Device for razvlechenija contains a pair of movable elements with jagged or rough surface. Waste tanned with chromium salts skins are, for example, the waste stage of planing chrome-tanned leather, containing chromium which is about 2-4 wt. [3]

As the water-soluble melamine-formaldehyde resin may be used, for example, water-soluble chalk the way. To spongy dispersion of waste tanned leather (RADSCH) add the dispersion nedubrovo collagen (DNAs with), polymer component, which serves as a crosslinking agent to produce a pH adjustment using Na2CO3to the required size, the composition is thoroughly mixed. Then the resulting mass is formed into sheets on the trays, freeze in the temperature range from -5 to -20aboutWith defrost. The resulting sheets are dried and pressed to obtain collagen leather imitation material.

The receiving sheet kriostrukturirovaniya collagen leather imitation material based on the proposed composition is illustrated by the following examples.

P R I m e R 1. 500 g of spongy waste tanned with chromium salts leather (RTSH) humidity of 40% is mixed with 600 ml of water, add 350 g of 3% aqueous dispersion nedubrovo raw material containing collagen from the skins of bovine DNAs with), mix. Then to the resulting mass is added 1 l of 5% aqueous solution of melamine-formaldehyde resin (ISF), mix, add water until the total content 9640 ml and adjust pH to 8 by adding (KN) of carbothane Na2CO3. The resulting homogenized mixture of the obtained composition, shown in the table.

For the implementation of ristrutturare composition is placed in a layer on the trays, freeze at temperatures from -12 to -15aboutC for 8 h, then thawed, dried, and pressed.

Examples 2 and 3 carried out analogously to example 1. The composition for sheet kriostrukturirovaniya material and properties kriostrukturirovaniya collagen sheet material shown in the table.

COMPOSITION FOR SHEET KRIOSTRUKTURIROVANIYA COLLAGEN containing MATERIAL including dispersed newblance collagen containing raw materials from the skins of cattle, polymer cross-linking agent is a water-soluble melamineformaldehyde resin, a pH Adjuster and water, characterized in that as a pH-regulator it contains sodium carbonate, and the pH of the composition is 7 to 10, and further comprises a spongy waste tanned with chromium salts skins in the following ratio of the components of the composition, wt.h.

Dispersed newblance collagen containing raw materials from the skins of cattle (in terms of dry substance) 0,005 0,5

Water-soluble melamineformaldehyde resin 0,3 1,5

5

Water 92,0 96,6

 

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