JPS5975926A - Liquid composition - Google Patents

Abstract

PURPOSE:A liquid composition capable of forming a resin composition improved in exudation of vehicles, hazing and loss of mechanical properties and heat distortion temperature, comprising a dye or pigment, or an additive and polyoxyethylene alkylphenyl ether. CONSTITUTION:A liquid composition comprising a dye or pigement and/or an additive and a polyoxyethylene alkylphenyl ether. Of the compounds of formula I used, those in which R is a 1-20C alkyl, and n is 6-16 are desirable. Those in which n is 10-16 are partitionally desirable because of excellent heat resistance. Examples of these include commercially available polyoxyethylene octylphenyl ether, and polyoxyethylene nonylphenyl ether in which n is 1-16. Those in which n >=17 are not desirable because are pasty or solid at room temperature and do not form liquid compositions of suitable viscosities though the heat resistance is heated resistance is further improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to liquid colorants and liquid additives for linear aromatic polyesters, polyamides and styrenic resins.

Generally, as a stock colorant for synthetic fibers, a master patch is used in which dyes and pigments are dispersed at a high concentration in a synthetic resin because a high degree of dispersion and physical properties are required. However, its production requires a premixing device and a kneading device such as an extruder, making the process complicated, and it also has the disadvantage of high production costs because there is a lot of loss due to color changes, making small lot production difficult. ing.

In addition, various liquid colorants have already been put into practical use as colorants for general-purpose plastics that are injection molded, but polyethylene terephthalate and nylon-6, which are kneaded at higher temperatures,
However, problems such as vehicle seepage, whitening phenomenon, decrease in mechanical properties, and decrease in heat distortion temperature are noticeable.
No liquid colorant is known that is effective for these resins.

The present inventors have conducted extensive research on vehicles that have good compatibility with molten resin and can easily and uniformly disperse pigments, and have found that a liquid colorant using a specific alkylphenyl type nonionic surfactant as a vehicle has been developed. The inventors discovered that when used for coloring aromatic polyester, polyamide and styrene resin, the above-mentioned problems associated with conventional liquid colorants hardly occur, leading to the completion of the present invention. .

That is, the present invention consists of a dye/pigment and/or an additive and a polyoxyethylene alkylphenyl ether represented by the general formula % (in the formula, R is an alkyl group and n is 1 to 16). The present invention provides a liquid composition for linear aromatic polyester, polyamide, and styrenic resin, which is characterized by the following.

As dyes and pigments used in the present invention, any known dyes and pigments conventionally used for synthetic resins can be used, but
Typically, inorganic pigments such as carbon black, titanium oxide, iron oxide, phthalocyanine, azo, dioxazine, anthraquinone, thioindigo, isoindolinone, perinone, perylene, quinacridone, quinophthalone, etc. organic pigments, oil-soluble dyes, stilbenes,
Examples include brightening agents such as oxazole type.

As additives, any of the additives conventionally used for cotton-like aromatic polyesters, polyamides, and styrene resins can be used, such as pentaerythrityl-tetrakis (3-(3,5-ditertiary-butyl) −
4-hydroxyphenyl)propionate]; benzophenone light stabilizers such as 2-hydroxy-4-octoxybenzophenone; 2-(2-hydroxy-5-methylphenyl)-2; ■-Benzotriazole light stabilizers such as benzotriazole, salicylate light stabilizers such as 4-octylphenyl salicylate, ethyl-3,5
- Nickel complex light stabilizers such as ditertiary-butyl-4-hydroxybenzoylphosphonate nickel(II) salt, hindered amine light stabilizers such as 4-benzoyloxy=2.2.6.6-titramethylbiperidine, etc. can be mentioned.

In the present invention, a polyoxyethylene alkyl phenyl ether represented by the general formula (I) [hereinafter referred to as a surfactant of the general formula (1)] is used as a vehicle, but it is particularly preferable that R in the formula is 1 ~20 alkyl groups, n is 6~
This is the case when n is an integer of 16 to 16, and it is particularly preferable because the heat resistance is good. For example, n is an integer of 10 to 16.
16 commercially available polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene decylphenyl ether, and mixtures thereof. , n is an integer of 17 or more, the heat resistance is further improved, but it is not preferable because it is pasty or solid at room temperature and a liquid composition with a preferable viscosity cannot be obtained.

The liquid composition of the present invention has a viscosity at 25°C (BH type rotational viscosity needle, rotor resistance 7.2 Orpm) of 50 to 5.
The viscosity is preferably adjusted by using dyes and pigments and/or additives in the range of 30 to 150 parts by weight per 100 parts by weight of the surfactant of general formula (I). However, when an inorganic pigment is used, a weight range of 70 to 150 parts by weight is preferred, and when an organic pigment or additive is used, a weight range of 40 to 80 parts by weight is preferred.
is preferred.

In order to obtain the liquid composition of the present invention, a predetermined amount of dyes and pigments and/or additives and a surfactant of general formula (1) are usually mixed at room temperature using a general mixer such as a homomixer or a disper mill. After mixing briefly using a kneader, it is kneaded using a general kneading machine such as a 13-roll kneader, a ball mill, a colloid mill, or a dyno mill. When using dyes and pigments that dissolve, it is preferable because they only need to be sufficiently mixed in a mixer such as the one described above.A preferable dye and pigment such as birch is, for example, a dye that easily dissolves in a linear aromatic polyester and produces a clear color. JP-A No. 53-12953, JP-A-53-120760, and JP-A-56-1207 exhibit color tone.
Examples include specific perinone pigments, thioindigo pigments, isoindolinone pigments, and anthraquinone pigments described in No. 56 and JP-A No. 57-25353.

Examples of linear aromatic polyesters that can be used in the liquid composition of the present invention include polyethylene terephthalate, polybutylene terephthalate, etc.; examples of polyamides include nylon 6, nylon 6.6, nylon 6.10, nylon 12, etc.; As the resin, polystyrene, A
Examples include S resin and ABS resin.

Although the liquid composition of the present invention contains a high concentration of dyes and pigments and/or additives, it has a low viscosity and excellent dispersibility, so it cannot be mixed with the above thermoplastic resin. 5- Only a small amount is needed to be added, and there is no need for the usual intensive kneading. The dyes and pigments and/or additives are sufficiently dispersed, and the resulting resin composition has almost no problems such as exudation of vehicle, occurrence of whitening phenomenon, decrease in mechanical properties, and decrease in heat distortion temperature. Furthermore, since the liquid composition of the present invention is usually injected and added near the tip of the screw, dyes and pigments and/or additives are less likely to pass through than when using a conventional colorant such as a masterbatch. There is also the advantage that cleaning of the mixing apparatus when changing colors is extremely easy, since fewer parts of the mixing apparatus are contaminated by this.

In the resin composition obtained by adding the liquid composition of the present invention in this way, exudation of the vehicle, occurrence of whitening phenomenon,
Problems such as a decrease in mechanical properties and a decrease in heat distortion temperature hardly occur.

The liquid composition of the present invention will be explained in more detail with reference to Examples below. In addition, all parts and percentages in the examples are based on weight.

Example 1 Polyethylene glycol nonylphenyl ether C Neugen E^-80, n-6: see general formula (1), manufactured by Dai-Kogyo Seiyaku Co., Ltd.] 100 parts, 90 parts of titanium oxide, Tertiary Leap 6-thylphenol oxidation Inhibitor (Irganox 1222
Chill Geigy N) was added, mixed with a disper mill, and then dispersed and kneaded with a 3-roll mill until the viscosity was 100.
Boies (BH type rotational viscometer, rotor Nn7.20 r
pm) was obtained. The obtained white liquid composition was added in an amount of 1 to 99 parts of polyethylene terephthalate.
30 parts by continuous injection into the screw tip of a melt spinning apparatus equipped with a static mixer.
The yarn was spun at 0° C. to obtain a white polyester yarn having a titanium oxide concentration of 0.45% and a fineness of 15 denier with good dispersibility.

Example 2 A white nylon thread having a titanium oxide concentration of 0.45% and a fineness of 15 denier with good dispersibility was obtained in exactly the same manner as in Example 1 except that nylon-6 was used instead of polyethylene terephthalate 1-.

Example 3 66.7 parts of CI Pigment Red 88 (thioindigo pigment) was added to 100 parts of polyethylene glycol octylphenyl ether (Octaball 100.n=]Q, manufactured by Sanyo Chemical Industries, Ltd.) and thoroughly mixed with a homomixer. A red liquid composition with a viscosity of 150 voids was obtained. The obtained red liquid composition was melt-spun in the same manner as in Example 1 to obtain a bright red polyester yarn with a pigment concentration of 0.4% and a fineness of 10 denier.

Example 4 53.8 parts of copper phthalocyanine blue was added to 100 parts of polyethylene glycol decylphenyl ether (Noogen EA-143, n=13, manufactured by Dai-Kogyo Seiyaku Co., Ltd.), mixed in a disper mill, and three rolls were sufficient. A blue liquid composition with a viscosity of 300 voids was obtained.

The obtained blue liquid composition was added by injecting it under the hopper of a melt spinning device at a ratio of 1 part to 69 parts of polyethylene terephthalate, and was spun at 300°C until the pigment concentration was 0.
．． A blue polyester yarn with a fineness of 10 denier and good dispersibility of 5% was obtained.

Example 5 The pigment concentration was 0.5% in the same manner as in Example 4 except that nylon-6 was used instead of polyethylene terephthalate.
A blue nylon thread with a fineness of 10 denier and good dispersibility was obtained.

Patent applicant: Dainippon Ink Chemical Industry Co., Ltd. 227-

Claims (1)

[Scope of Claims] It is characterized by consisting of dyes and pigments and/or additives and polyoxyethylene alkylphenyl ether represented by the general formula (wherein R is an alkyl group and n is 1 to 16). A liquid composition for linear aromatic polyester, polyamide and styrenic resin.