The way velour finish

 

(57) Abstract:

The invention relates to leather manufacture, and can be used in the formulation of the velour of fine raw material of cattle. The method includes drying, Taiko, double Taiko, a breakdown in the drum, the fourth Taiko, stretching the skin and causing them impregnating soil containing kationaktivnaya polyurethane dispersion, kationaktivnaya additive based on the condensation products of amines and fatty acids and water. The method allows to get the velour of small cattle hides with high performance properties. table 1.

The invention relates to leather manufacture, and can be used in the formulation of the velour of fine raw material of cattle.

There is a method of finishing of leather, obtained from the skins of cattle direct course, including vacuum drying, double Taiko with intermediate hides, double grinding, a breakdown in the drum and drying at full length on the frames /SU, 1491887, A1, class C 14 C 13/00, 1989/.

The closest analogue of the proposed technical solution is the way to finish velour, obtained from the skins of cattle reverse, including drying, aging, The .17/.

The disadvantage of these methods is that they do not provide a velour leather with high fastness to dry and wet friction.

The technical result of the invention is the improvement of operational properties velour small raw cattle.

This result is achieved by the fact that in the way of finishing velour, including drying, Taiko and a breakdown in the drum, after serious additionally produce twice Taiko, and after laying in the drum additionally carry out the fourth Taiko, stretching the skin and causing them impregnating primer of the following composition, wt.%

Kationaktivnaya polyurethane dispersion - 9,0-10,0

Kationaktivnaya additive based on the condensation products of amines and fatty acids - 18,0 - 20,0

Water - the Rest

Additional double grave after grave, fourth grave, stretching skin and applying a sealing of soil containing, wt.%: kationaktivnaya polyurethane dispersion 9,0 - 10,0, kationaktivnaya additive based on the condensation products of amines and fatty acids 18,0 - 20,0, water, rest, after laying in the drum allows you to get the velour of small raw cattle Scot condensation of amines and fatty acids are used, for example, Roda Fill K, Icafiller KT, Kitefix-9289-046-046-89-375-96 (a complex salt of acetic or formic acid and Diethylenetriamine), Cationic fat THAT 6-14-852-94 (the product of esterification of the triethanolamine synthetic fatty acid, treated with a mixture of wetting agent and formic acid).

The method is as follows:

Velour derived from hides and skins dairy calf skin, virostko or half-reverse by known techniques, finish by drying saves, three serious breakdown in the drum, the fourth grave and stretch marks on the frames. Then the Assembly map on the skin caused impregnating primer of the following composition, wt.%: kationaktivnaya polyurethane dispersion 9,0 - 10,0, kationaktivnaya additive based on the condensation products of amines and fatty acids 18,0 - 20,0, water the rest. The flow rate of 100-120 g/m2.

The composition is prepared by the sequential mixing kationaktivnaya polyurethane dispersion, kationaktivnaya additives and water at the stated ratio of the components.

Example 1. Velour received return stroke of the dairy calf skin by known techniques, is subjected to drying saves, triple taike, the breakdown in the drum, the fourth taike and stretching on the frames. Then on the skin caused impregnating g is C - 18,0, and water - 73,0.

Example 2. Velour received return stroke of virostko by known techniques, trim, as in example 1, but after stretching of the skin caused impregnating primer of the following composition, wt.%: kationaktivnaya polyurethane dispersion Idrotan 1286 K - 9,5, kationaktivnaya additive Icafiller KT - 19,0 and water - 71,5.

Example 3. Velour received return stroke of half by known techniques, trim, as in example 1, but after stretching of the skin caused impregnating primer of the following composition, wt.%: kationaktivnaya polyurethane dispersion Roda Pur K-312 - 10,0, cationic fat - and water 20,0 - 70.

Example 4. Velour received return stroke of the dairy calf skin by known techniques, trim, as in example 1, but after stretching of the skin caused impregnating primer of the following composition, wt.%: kationaktivnaya polyurethane dispersion Roda Pur K-312 - 8,0, cationic additive Kitefix - 17.0% and water - 75,0.

Example 5. Velour received return stroke of virostko by known techniques, trim, as in example 1, but after stretching of the skin caused impregnating primer of the following composition, wt.%: kationaktivnaya polyurethane dispersion Idrotan 1286 K - 11,0, cationic fat - 21,0 and water - 68,0.

The results of the test is about how trim velour allows to obtain the elastic skin of the small of raw cattle with high performance properties.

Way to finish velour, including drying, Taiko and a breakdown in the drum, characterized in that after serious additionally produce twice Taiko, and after laying in the drum additionally carry out the fourth Taiko, stretching the skin and causing them impregnating primer of the following composition, wt.%:

Kationaktivnaya polyurethane dispersion - 9,0 - 10,0

Kationaktivnaya additive based on the condensation products of amines and fatty acids - 18,0 - 20,0

Water - The Rest

 

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