SU362051A1 - W * i "i'54?" 'I -' ^ iM. '^.'. ' P> & b1 Ply ^ ^ * - - Google Patents

Description

one

There is a method of finishing chrome leather using pearl staves, creating a pearl effect. There is also known a method of finishing chrome leather using aluminum powder, which is introduced into the upper UF of the coating layer with a colorless varnish.

The use of aluminum powder produces only a metallic spray effect.

A continuous gentle effect of pearlescent finish can be achieved on the skin, covered with a finish based on aqueous dispersions of polymers, if you apply a colored, moreover nitrocellulose film with aluminum powder over this coating.

In order to improve the effect of mother-of-pearl on the proposed method, nitrocellulose lacquer is dyed with alcohol or acetone-soluble dyes.

In order to expand the color range of the proposed method, water-soluble direct or acid dyes treated with salts or amines bases, for example ethanol or methyl, or ethylamines, are used for dyeing nitrocellulose lacquer.

A prerequisite for obtaining the desired effect is a sufficiently saturated color of nitro film in the color of the base coat. For tinting nitro films can

known alcohol- or acetone-soluble dyes (for example, alcohol-soluble nigrosin) should be used. Conventional water-soluble direct and acid dyes can be used to dye nitrocellulose in a first film if they are pre-treated with amines (e.g., ethanol amines or ethylamine) or their salts. It is also possible to proceed from the bases of amines, but at the same time it is necessary to introduce an equivalent amount of acid into the alcohol phase. The salts of the dyes with the amine, which are formed in the process, are well soluble in alcohol and acetone and can be introduced into the nitrocellulose lacquer. After drying do not migrate from the film, do not give fermentation.

Aluminum or bronze powder in such a colored film reveals a soft solid pearlescent effect on the skin.

Example 1. 10 wt. including soluble nigrosine dissolved in 750 weight. ethyl alcohol; the solution is introduced into a suspension consisting of 1000 wt. including colorless varnish KB, 750 ml of butyl acetate and 20 wt. including aluminum (or bronze) powder. The resulting paint is sprayed onto the skin, finished with polymer emulsion coatings. The skin is pressed and sealed with a colorless nitrous emulsion.

Example 2. To 10 wt. including dye direct brown 2 LC add 5 wt. including triethanolamine and 10 wt. including ethanol, stirred while heating until a homogeneous paste is formed, 750 weight is added with stirring. h. alcohol. The resulting solution was introduced into the suspension (as in Example 1).

Example 3. To 10 wt. including dye direct scarlet add 1 weight. including concentrated hydrochloric acid or 0.5 weight. including concentrated acetic acid, 3 wt. including triethylamine and 10 wt. including ethanol, stirred while heating until a homogeneous paste, add 750 wt. h. alcohol. The resulting solution was introduced into the suspension (as in Example 1).

Subject invention

Claims (2)

1. A method of finishing chrome skin with a pearlescent effect using aluminum powder introduced into the top coat of a nitrocellulose lacquer, characterized in that, in order to improve the effect of nacre, the nitrocellulose lacquer is dyed with alcohol or acetone soluble dyes. 2. A method according to claim 1, characterized in that in order to expand the color gamut, water-soluble direct or acidic coatings are used to dye the nitrocellulose lacquer. dyes treated with amine salts or bases, for example, this ol-, or methyl-, or ethylamines.