Composition for waterproofing leathers


(57) Abstract:

Composition for waterproofing leathers, including polyorganosiloxane liquid polymethylsiloxane fluid, a crosslinking agent and a solvent, characterized in that, to increase water-resistant properties of the skin, which is stored under dynamic loads, as the cross-linking agent contains organophosphorus compounds of the following formula:

< / BR>
< / BR>
< / BR>
in the following ratio, wt.%:

Polyorganosiloxane liquid - 8 - 14,5

Polymethylsiloxane liquid - 7 - 15

Organophosphorus compound is 0.5 - 5

Solvent - Ostalnoe


Same patents:

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FIELD: leather industry.

SUBSTANCE: semifinished product is degreased, neutralized, dyed, and lubricated. Dyeing is performed in two washing-interrupted steps with anionic black dye consumed in amount 0.5-0.6% of the weight of semifinished product in each dyeing step. Lubrication is followed by retannage with chrome tanner in amount 0.6-1.0% of the weight of semifinished product (calculated for chromium oxide) and treatment with 0.8-1.0% of spindle oil.

EFFECT: achieved deep black color and high performance characteristics.

1 tbl, 5 ex

FIELD: tannery or furry production.

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EFFECT: the invention presents a device simple in its servicing, having a high reliability, more efficient realization of the process of impregnation, a possibility of its usage in an automatic production line.

2 dwg

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3 cl, 1 tbl

FIELD: chemical technology.

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EFFECT: improved preparing method.

5 cl, 1 tbl, 16 ex

FIELD: tanning industry.

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1 tbl, 15 ex

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1 tbl, 19 ex

FIELD: leather industry.

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EFFECT: improved preparing method, valuable properties of copolymers.

22 cl, 6 tbl, 6 ex

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1 dwg, 1 tbl

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2 tbl