JPS61223040A - Material for coloring resin - Google Patents

Abstract

PURPOSE:A coloring material capable of painting clear pattern having wear resistance on ABS resin, Bs resin, etc., comprising a compound obtained by diazotizing dibromonitroaniline in sulfuric acid, and coupling the resultant compound with ethylcycanoethylaniline. CONSTITUTION:A molded article of a resin having 8.5-11.5 solubility parameter is colored with a coloring material shown by the formula (X<1> and X<2> are Cl or Br; R<1> and R<2> are 1-6C alkyl, aryl, phenylalkyl, or cyanoalkyl) by the use of a solvent having swelling properties on the resin, or letters are written on the molded article with the coloring material. Acrylonitrile-butadiene-styrene resin, polybutadiene-styrene resin, etc., are used as the resin. Coloring is preferably carried out under heating at a proper temperature for permeation of the coloring material and vaporization of the solvent, or a transfer paper may be coated with the coloring material, and the resin may be stuck to the resin under heating.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to resin molded articles having a solubility parameter of 8.5 to 11.5, such as acrylonitrile-butadiene-styrene resin (ABS), polybutanodiene-styrene resin (BS). , styrene-acrylonitrile resin (A
Used when coloring or printing molded products such as s).
The following general formula (I)z [In formula (1), and each independently represent a chlorine atom or a bromine atom, and R1 and R each independently represent an alkyl group having 1 to 6 carbon atoms, an allyl group, or a phenylalkyl group. group, represents an anchor cyanoalkyl group. ]Regarding the coloring material shown in .

” J Baguchi LL Conventionally, in order to color a resin, a desired pigment was kneaded with the resin and then melt-molded to obtain a colored molded product. In addition, as a method for printing characters, patterns, etc. on the resin surface,
For example, printing was performed by applying a coloring agent such as a pigment to an ink or paint on a resin surface, and then applying a decorative sheet or the like to cover the resin surface.

Problems to be Solved by the Invention When printing characters, patterns, etc. on resin molded products, it is not possible to use a method of mixing pigments with resin; had poor abrasion resistance and was unsuitable for parts that are frequently touched, such as keyboards.

Means for Solving the Problems Under the above-mentioned circumstances, the inventors of the present invention have made extensive studies and have solved the coloring material represented by the general formula +1), and used it to print letters or letters on resin. By writing the pattern, it was possible to obtain abrasion-resistant characters or patterns.

The features of the present invention are as follows: (1) The colorant represented by the general formula α) according to the present invention has a high solubility in a solvent that has a swelling effect on the resin, and moreover, it has a high solubility in a resin having a specific solubility parameter. When printing with this solution, the colorant penetrates into the resin, so it is highly compatible with the resin.
It is possible to obtain prints with high wear resistance.

These resins used in the present invention are resins having a solubility parameter of 8.5 to 11.5, and include acrylonitrile-butadiene-styrene resin (ABS), polybutadiene-styrene resin (・n S ), and acrylonitrile-styrene resin. (As) etc.

In the present invention, better effects can be achieved by applying an appropriate temperature to aid in penetration of the coloring material and volatilization of the solvent.

Further, as a method of coloring, the resin can also be colored by applying the coloring material of the present invention to a transfer paper and applying heat.

[Example-1] 5 parts of the coloring material of the following formula was dissolved in 2000 parts of ethyl cellosolve and commercially available acrylonitrile-butadiene-styrene resin (AB
S) Patterned pattern on board - Drying at 50°C for 2 hours yielded a stone-brown resin board with a clear patterned pattern that was highly abrasion resistant.

The coloring material of the above formula is known as a disperse dye.

It was obtained by the known method of diazotization of 2,6-dipromo-4-nitroaniline in sulfuric acid followed by coupling with N-ethyl-N-cyanoethylaniline.

[Examples 2 to 6] In the same manner as in Example-1, the resins listed below were colored using the following coloring materials to obtain colored plates with clear brownish patterns.

Claims (1)

[Scope of Claims] 1 The following general formula ▲ is used when coloring or printing a resin molded product using a swelling solvent for a resin having a solubility parameter of 8.5 to 11.5. There are mathematical formulas, chemical formulas, tables, etc.▼ [In the formula, X^1 and X^2 each independently represent a chlorine atom or a bromine atom, and R^1 and R^2 each independently represent an alkyl having 1 to 6 carbon atoms. group, allyl group, phenylalkyl group or cyanoalkyl group]. 2. Claim 1 in which the resin molded product is an acrylonitrile-butadiene-styrene resin, a polybutadiene-styrene resin, or a styrene-acrylonitrile resin.
Color materials listed in section.