JPS5839868B2 - Bunsansen Ryouso Saibutsu - Google Patents

Description

[Detailed description of the invention] The present invention relates to highly concentrated compositions of disperse dyes.

In recent years, non-aqueous dyeing has been attracting attention due to dyeing wastewater pollution, etc., but when disperse dyes used in existing water-based dyeing are used in solvent dyeing whose main component is chlorinated hydrocarbon, the uniform dispersion of the disperse dye is generally good. Moreover, the distribution ratio of the dye between the fiber and the dye bath is very low, making it impossible to obtain a dyed product with the dye density found in the case of water-based dyeing.

Furthermore, even if the disperse dye is dispersed with a dispersant such as a nonionic or anionic surfactant that is normally used for water-based dyeing, the effect is small in relation to the amount used.

From these viewpoints, we have developed a non-aqueous solution that has excellent affinity for each compound of disperse dyes and chlorinated hydrocarbons, and can effectively and stably store disperse dyes in an organic solvent in a uniformly dispersed state for a long period of time. As a result of intensive research and examination of what can be called a dispersant, the present inventors have discovered that aliphatic amine derivatives have excellent effects for this purpose, and have arrived at the present invention.

That is, the present invention resides in a disperse dye composition comprising a disperse dye, an organic solvent that does not substantially dissolve the disperse dye, and an aliphatic amine derivative that is soluble in the solvent and compatible with the disperse dye.

Next, the present invention will be explained in more detail.

As the disperse dye in the present invention, dye base materials that are generally commercially available as disperse dyes are used.

The organic solvent is one that does not substantially dissolve the disperse dye and is a known liquid organic compound that is generally used as an organic solvent, such as trichlorethylene, perchloroethylene, dioxane, methyl ethyl ketone, ethyl lactate, n. Butyl cellosolve acetate, N-
Methylpyrrolidone, paraffin, diethyl phthalate,
Examples include aliphatic and aromatic organic compounds such as benzyl alcohol.

The amount used is 1 to 20 in weight ratio to the disperse dye raw material.
parts, preferably 3 to 10 parts, are suitable.

In the present invention, the aliphatic amine derivative used as a dispersant is an organic compound that is soluble in the above organic solvent and compatible with the above disperse dye, and is represented by the following general formula CI).

General formula CI() R': C9 to C15 alkyl group R2: H or C9 to C15 alkyl group R3: C8 to C15 alkyl group, C2 alkylamino group, or the amount of the above dispersant to be used, A suitable weight ratio is 0.1 to 10 parts, preferably 0.5 to 2 parts, based on the dye base material.

In addition to the above-mentioned components, for the purpose of improving dispersion stability, it is also possible to add anionic or nonionic dispersing and emulsifying aids for ordinary aqueous systems, as well as activators in the form of a mixture of the two.

Next, a method for preparing the disperse dye composition will be specifically described.

A commercially available organic disperse dye raw material is finely ground, an aliphatic amine derivative is added thereto, it is made into a paste, an arbitrary proportion of an organic solvent is added thereto to adjust the viscosity, and the powder is ground with a sand grinder or the like to 0.01 to 10 μm, preferably. can be pulverized and dispersed into particles of 0.01 to 1 μm to obtain a highly concentrated dye composition that can be stored in a stable dispersed state for a long period of time.

The highly concentrated disperse dye compositions obtained in this way are particularly advantageous when applied to solvent dyeings in which chlorinated hydrocarbons are the main solvent and optionally in liquid chlorinated hydrocarbons or mixtures of chlorinated hydrocarbons and water. It can be diluted to a ratio of 100% to make a dyeing bath, and synthetic fibers and blended fabrics thereof can be dyed by an exhaustion method or a continuous method.

The present invention enables solvent dyeing to be carried out advantageously by obtaining a disperse dye composition, and its industrial value is extremely great.

EXAMPLES The present invention will be explained in more detail with reference to examples below, but the present invention is not limited to the following examples unless it exceeds the gist thereof.

In addition, "parts" in the examples indicate "parts by weight."

Example 1 1 part of the dye represented by the following structural formula was ground, 1 part of R-NHCH2CH2NH2R:C11 and 5 parts of perchlorethylene were added thereto, and the mixture was ground in a sand grinder at room temperature to form a long-term stable concentrate. A dye dispersion was obtained.

10 parts of this dispersion was mixed with 1000 parts of perchloroethylene, 30 parts of polyester cloth was added, and the temperature was 120°C x 3.
After heat treatment for 0 minutes, a uniform bright red dyed product was obtained.

Example 2 20 parts of a dye represented by the following structural formula were ground, 030 parts of R1' C2R2: C11 and 100 parts of ethyl lactate were added thereto and treated in the same manner as in Example 1, and 5 parts of this dye composition was This was diluted to 100 parts of perchlorethylene and subjected to a continuous dyeing pad bath.

Continuous staining conditions are conventional methods and are as follows.

,the result,
A level deep blue dyed product was obtained.

Example 3 One part of the dye having the following structural formula was ground, and R-NH-R and R-N-RR obtained by the following method [A] were added to it as a dispersant:
A stable dye composition was obtained by adding 1 part of a 1:1 mixture of C9 to C15 and carrying out the same operation as in Example 1.

1 part of this composition was mixed with 100 parts of perchlorethylene and 10 parts of water.
When 30 parts of polyester cloth was dyed in this emulsion bath at 110°C for 30 minutes, the dyed material was dyed with a sufficiently high concentration of blue as in Example 1.2. Obtained.

Method [A] RCHO/N using RCHO consisting of the following composition distribution
By controlling the reaction ratio of H3, R-NH
A 1:1 mixture of -R and R-N-R (R: C, ~C1,) is obtained.

Claims (1)

[Scope of Claims] 1. A disperse dye, an organic solvent that does not substantially dissolve the disperse dye, and an aliphatic amine derivative represented by the following general formula CI) that is soluble in the solvent and compatible with the disperse dye. A disperse dye composition. General formula [■] R1: C0 to C1□ alkyl group R2: H or C9 to CI5 alkyl group R3: C9 to C15 alkyl group, C2 alkylamino group, or