JPS62131050A - Colored particulate resin for vinyl chloride resin - Google Patents

Abstract

PURPOSE:To provide the titled particulate resin which is free from bleeding or blotting of color, hardly causes thickening, has excellent flow characteristics and workability and is useful as a color aggregate which enables easy patterning, by providing a synthetic resin film on the surface of a particulate resin colored by a pigment, a dye, an ink, etc. CONSTITUTION:A particulate resin having a particle size of 100-1,000mu such as PVC, a vinyl chloride/ethylene/vinyl acetate copolymer, etc. is introduced into a mixer and the surface of said resin is wetted with a plasticizer or an org. solvent. A pigment, a dye or an ink is then added thereto and the mixture is mixed at 15-30 deg.C for 1-15min to obtain a colored particulate resin. A synthetic resin emulsion such as an acrylic resin emulsion, etc. is added to the particulate resin and the mixture is mixed at 70-160 deg.C for 2-20min to obtain a colored particulate resin coated with a synthetic resin film.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a colored granular resin that is effective as a colored aggregate for marble-like flooring materials, wall covering materials, etc. using vinyl chloride paste sol, etc. .

(Prior art) Conventionally, when manufacturing marble-like flooring materials, wall covering materials, etc., powders such as rubber, vinyl chloride resin, wood powder, acrylic resin, etc. are mixed as aggregates with raw materials such as vinyl chloride paste sol. are doing.

These aggregates are pre-colored and crushed ones,
Some are colored after being pulverized.

(Problems to be Solved by the Invention) When the above-mentioned colored aggregate is blended into, for example, a vinyl chloride paste sol and stirred and mixed with a propeller mixer, pigments and colorants are eluted into the plasticizer and solvent in the paste sol. In addition, there were defects such as discoloration and bleeding, as well as damage to the aggregate and increased viscosity of the sol.

The inventors of the present invention have carried out various studies in order to solve the above-mentioned defects such as discoloration. As a result, the present inventors have further developed colored resin granules obtained by coloring synthetic resin granules such as vinyl chloride resin with powdered pigments, etc. using an acrylic resin emulsion. The colored resin granules obtained by coating are blended with vinyl chloride paste sol and processed into flooring materials, resulting in almost no pigment elution or bleeding, low viscosity, good fluidity, and easy workability. The present invention was achieved by discovering that colored aggregate can be easily obtained.

(Means for Solving the Problems) That is, the present invention involves applying a synthetic resin emulsion to the surface of a granular resin colored with a pigment, a coloring agent, an ink, etc., and then subjecting it to a heating treatment to be colored. This is a colored granular resin for vinyl chloride resin, characterized in that a synthetic resin film is provided on the surface of the granular resin.

To explain the present invention in detail, the granular resin used in the present invention has a particle size of 100μ to 1000μ, preferably 25μ.
It is a granular resin or pulverized resin such as vinyl chloride resin, vinyl chloride-ethylene-vinyl acetate copolymer, styrene resin, acrylic-styrene resin, polycarbonate resin, polyethylene resin, polypropylene resin, etc. with a size of 0 μ to 500 μ.

The pigments and colorants that color the granular resin include azo pigments, anthraquinone pigments, isoindolinone pigments,
Powdered coloring agent (dry color) obtained by combining simple pigments such as quinacridone pigments, copper phthalocyanine pigments, titanium dioxide, red iron oxide, etc., or by blending metal soap, etc. with the above pigments.Paints in which pigments are dispersed in a vehicle or solvent. , ink, etc.

In the present invention, in order to obtain colored granular resin, first, the granular resin is mixed using a mixing machine such as a double-arm kneader (product of Moriyama Seisakusho), a butterfly mixer (product of Bengami Seisakusho), or a Henschel mixer (product of Mitsui Miike Seisakusho). Gate mixer (
Bengami Seisakusho) etc., and the surface of the granular resin is DOP.
Wet it with a plasticizer such as or an organic solvent such as methanol, and then add powdered pigment or other coloring agent to it.
Mix for 1-15 minutes at <0>C to obtain a colored granular resin.

Next, a synthetic resin emulsion is blended with this colored granular resin in a mixer, and the inside of the mixer is heated to 70°C to 16°C.
A colored granular resin for vinyl chloride resin is obtained by heating to 0° C. and mixing for 2 to 20 minutes.

Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 Granular vinyl chloride resin (trade name: Zeon 103EP:
Pour 100 parts by weight of Nippon Zeon Co., Ltd. product (particle size 100μ) and 5 parts by weight of plasticizer DOP into a Henschel mixer.
Stir and mix for 3 minutes at room temperature. Furthermore, 5 parts by weight of a paste coloring agent (trade name: Vinyl Toner VT6155 (product name: Dainichiseika Kagyo Co., Ltd. product) was added to this mixture, and 80
The mixture was stirred and mixed at ℃ for 5 minutes to obtain a colored granular vinyl chloride resin. Next, 10 parts by weight of an acrylic synthetic resin emulsion (trade name: Movinyl 742, a product of Hoechst Gosei Co., Ltd.) was added to the colored granular vinyl chloride resin.
After uniformly mixing with a Henschel mixer, the mixture was further mixed at 80° C. for 5 minutes to obtain colored granular resin colored red. Table 1 shows the results of testing the discoloration resistance and thickening state of the obtained colored granular resin.

Comparative Example 1 A colored granular resin colored red was obtained in the same manner as in Example 1, except that the step of adding the acrylic synthetic resin emulsion of Example 1 was removed.

Example 2 Granular vinyl chloride resin (trade name: Zeon 103FP:
Pour 100 parts by weight of Nippon Zeon Co., Ltd. product (particle size 100μ) and 5 parts by weight of plasticizer DOP into a Henschel mixer.
Stir and mix for 3 minutes at room temperature. Further, 5 parts by weight of a pasty colorant (trade name: Vinyl Toner VT6640 Plui, a product of Dainichiseika Industries, Ltd.) was added to this mixture, and the mixture was heated at 80°C.
The mixture was stirred and mixed for 5 minutes to obtain a colored granular vinyl chloride resin. Next, 10% of a styrene-acrylic synthetic resin emulsion (trade name: Rikapond B5-20, product of Chuo Rika Kogyo Co., Ltd.) was added to the colored granular vinyl chloride resin.
After adding parts by weight and mixing uniformly with a Henschel mixer,
By further mixing at 80° C. for 5 minutes, a blue colored granular resin was obtained. Table 1 shows the results of testing the discoloration resistance and thickening state of the obtained colored granular resin.

Comparative Example 2 A colored granular resin colored blue was obtained in the same manner as in Example 2, except that the step of adding the styrene-acrylic synthetic resin emulsion of Example 2 was omitted.

Example 3 Granular vinyl chloride-ethylene vinyl acetate copolymer resin (trade name: Graftmazeon R-5: Nippon Zeon Co., Ltd. product)
100 parts by weight (particle size 350μ) and 5 parts by weight of methanol were put into a butterfly mixer and stirred for 2 minutes at room temperature. Further, add a water-based coloring agent to this mixture (product name: New Rafutimin Colorpur-FLB: Dainichiseika Chemical Co., Ltd. product).
5 parts by weight were added and stirred at 80° C. for 5 minutes to obtain colored granular vinyl chloride resin. Next, 10 parts by weight of a styrene-acrylic synthetic resin emulsion (trade name: Brimar AC61: product of Nippon Acrylic Industry Co., Ltd.) was added to the colored granular vinyl chloride resin and mixed uniformly with a butterfly mixer, followed by further heating at 80°C for 5 minutes. By performing the mixing, colored granular resin colored blue was obtained. Table 1 shows the results of testing the discoloration resistance and thickening state of the obtained colored granular resin.

Comparative Example 3 A colored granular resin colored blue was obtained in the same manner as in Example 3, except that the step of adding the styrene-acrylic synthetic resin emulsion of Example 3 was omitted.

Example 4 Granular vinyl chloride-ethylene vinyl acetate copolymer resin (trade name: Graftmazeon R-5: Nippon Zeon Co., Ltd. product)
100 parts by weight (particle size 350μ) and 5 parts by weight of methanol were put into a butterfly mixer and stirred for 2 minutes at room temperature. Furthermore, powdered coloring agent (trade name: P
5 parts by weight of MP 1640 Blue (manufactured by Dainichiseika Kagyo Co., Ltd.) was added and stirred at 60° C. for 5 minutes to obtain a colored granular vinyl chloride resin. Next, 10 parts by weight of a styrene-acrylic synthetic resin emulsion (trade name: RIKABOND ES-20: product of Chuo Rika Kogyo Co., Ltd.) was added to the colored granular vinyl chloride resin and mixed uniformly with a butterfly mixer, and then further heated at 80°C. By mixing for 5 minutes, colored granular resin colored blue was obtained. Table 1 shows the results of testing the discoloration resistance and thickening state of the obtained colored granular resin.

Comparative Example 46 A colored granular resin colored blue was obtained in the same manner as in Example 4, except that the step of adding the styrene-acrylic synthetic resin emulsion of Example 4 was removed.

[Discoloration resistance and thickening test method]

Determination of discoloration when the colored granular resin of the present invention is blended into vinyl chloride paste sol.

(Paste sol formulation) Vinyl chloride resin 100 parts by weight Plasticizer DOP 50 parts by weight Stabilizer (Ha-Zn system) 3 parts by weight To 100 parts by weight of the above paste sol, colored granules obtained in Examples and Comparative Examples Add 10 parts by weight of each resin and mix with a mixer (product name: Three-One Motor: Shinto Kagakusha product) to 700.
rpm for 1 minute, and measure discoloration and viscosity immediately after mixing and after standing for 12 hours.

Colorfastness is determined by placing a colored paste sol on a filter paper and determining how the color oozes into the filter paper.

The viscosity was measured using a B-type viscometer, and the rotor depth was 40 and the rotation speed was 6O.
Measured in rpm.

[Effect]

The colored granular resin for vinyl chloride resin of the present invention is especially treated with a synthetic resin emulsion, so even if it is blended into a vinyl chloride paste sol, the colorant will not be eluted by the plasticizer or solvent in the paste sol. No fading or bleeding occurs. In addition, it does not increase the viscosity of the paste sol, has good fluidity, is easy to work with, and is easy to pattern.
It is effective as a colored aggregate for vinyl chloride flooring, etc.

Claims (3)

[Claims] (1) A synthetic resin emulsion is applied to the surface of granular resin colored with pigments, colorants, inks, etc., and then heated to form a synthetic resin film on the surface of the colored granular resin. Colored granular resin for vinyl chloride resin. (2) The colored granular resin for vinyl chloride resin according to claim 1, wherein the granular resin is a vinyl chloride resin or a vinyl chloride-ethylene vinyl acetate copolymer with a particle size of 100 μm to 1000 μm. (3) The colored granular resin for vinyl chloride resin according to claim 1, wherein the synthetic resin emulsion is an acrylic acid resin emulsion.