The method of processing of fur skins

 

(57) Abstract:

The method relates to the processing of fur skins and can be used in Cyrano-dyeing production to prepare for dyeing with acid dyes. The method includes retanning water composition of fur skins, containing a tanning agent, chloride and sodium carbonate. As a tanning agent drug use based polyacetale low molecular weight alcohols and additives in quantities of 10 to 12 g/L. When it is introduced in two stages - at the beginning of treatment and after 2.0 to 2.5 hours Then carry out the neutralization and dyeing with acid dyes. The technical result is to reduce the weight and increase the area of the semifinished fur skins. 1 C.p. f-crystals, 2 tab.

The invention relates to light industry, in particular the fur sub-sectors, and can be used in Cyrano-dyeing production to prepare for dyeing with acid dyes.

A method of processing of rabbit by retanning aqueous composition containing, g/l: sodium chloride - 20,0; chrome tanning agent (the basicity 35%) - 3,0; surfactants (nonionic) is 0.5; sodium carbonate - 0,45, neutralization and dyeing with acid dyes. Retanning is carried out at 42oIn Vnoi task we address the inventive method of processing of fur skins is to reduce the weight and increase the area of the semifinished fur pelts.

This object is achieved by the proposed method of processing of fur skins. The essence of the proposed method consists in the aggregate of the following essential characteristics sufficient to achieve the technical result: in the method of processing of fur skins by retanning water composition that includes tanning agent, chloride and sodium carbonate, to neutralize and dyeing acid dyes, when doublepane as tanning agent drug use "tanning agent M" in the amount of 10-12 g/l, while it is introduced in two stages: at the beginning of treatment - 4,0-5,0 g/l and 2-2 .5 hours - 6,0-7,0 g/l

Thus, retanning perform the composition in the following ratio of components, g/l:

Sodium chloride - 20,0 - 25,0

The drug, "the tanning agent M - 10,0 - 12,0

Sodium carbonate - 0,5 - 0,75

Water To liters

Considering the whole set of essential features, the inventive method of processing of fur skins meets the condition of "novelty."

The drug, "the tanning agent M" is issued by the industry-based technical condition is cularly alcohols and special additives.

Comparative analysis of the proposed technical solutions to the prototype (table. 1) allows you to highlight the distinctive features of the proposed method, namely, when doublepane as tanning agent drug use "tanning agent M" in the amount of 10-12 g/l, while it is introduced in two stages: at the beginning of treatment - 4,0-5,0 g/l and 2-2 .5 hours - 6,0-7,0 g/l

The present invention may be found to comply with the condition of "inventive step", so as not detected known technical solutions that have the signs consistent with its hallmarks.

The inventive method are optimal, since the output beyond the specified technical result is not achieved.

Data supporting the achievement of the claimed technical result is shown in table.2.

On standardized indicators skins fully meet the requirements of GOST.

The skins are treated by the proposed method according to the scheme shown in table. 1. Specific examples of the proposed method of processing of fur skins are given in table.1 (examples 1-3).

The proposed method for the processing of fur skins was tested under production conditions. Rezultati square skins, on average, 5%;

to reduce the weight of a semi-finished product, on average, 15%;

to improve the environment of production due to elimination of chromium compounds.

Based on the above we can conclude: the proposed technical solution is new and meets the condition of "inventive step", as known from the prior art revealed no effect of distinguishing essential features of the claimed method on the achievement of the technical result. Using the proposed method provides this technical result, which indicates compliance of this invention the term "industrial applicability".

1. The method of processing of fur skins by retanning water composition that includes tanning agent, chloride and sodium carbonate, to neutralize and dyeing acid dyes, characterized in that when doublepane as tanning agent drug use based polyacetale low molecular weight alcohols in quantities of 10 to 12 g/l, while it is introduced in two stages: at the beginning of treatment - 4,0-5,0 g/l and 2-2,5 h - 6.0-7.0 g/l

2. The method according to p. 1, characterized in that the retanning provide a composition containing, g/l:

Sodium chloride - 20,0 - 25,0

Preparation on the basis of p is

 

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