JP2742346B2 - Colorant composition for olefinic thermoplastic elastomer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colorant for an olefin-based thermoplastic elastomer (hereinafter abbreviated as TPO), and more particularly, to a case where TPO is subjected to a color forming treatment with a calender roll, a mixing roll, a graining roll, or the like, or The present invention relates to a colorant composition used when the same treatment is performed using a T-die or the like.

[0002]

2. Description of the Related Art Conventionally, TPO has been colored and molded with various organic pigments and inorganic pigments, and various molded products such as films and sheets have been produced.

[0003]

[Problems to be solved by the invention]
When the coloring process is performed with a conventional coloring agent, the pigment adheres to the roll surface or the die surface (called a plate-out phenomenon), and the processability is significantly impaired. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned disadvantages of the prior art and to provide a colorant for TPO which does not cause a plate-out phenomenon.

[0004]

The above object is achieved by the present invention described below. That is, according to the present invention, 0.5 to 100.0 parts by weight of silicon oxide or a compound containing the same (hereinafter abbreviated as silicon oxide-containing compound) and 0.1 to 0.1 part by weight of methyl hydrogen polysiloxane are used per 100 parts by weight of the pigment.
And 20.0 parts by weight of a TPO colorant composition.

[0005]

By containing 0.5 to 100.0 parts by weight of a silicon oxide-containing compound and 0.1 to 20.0 parts by weight of methyl hydrogen polysiloxane per 100 parts by weight of a pigment, the roll surface and the die There is provided a colorant for TPO which does not cause a plate-out phenomenon that a pigment adheres to a surface.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention is described in more detail with reference to preferred embodiments. Examples of the silicon oxide-containing compound used in the present invention include, for example, silicic acid, hydrous silicic acid, ultrafine silica powder, silicic acid such as ultrafine silica powder, aluminum silicate, hydrous aluminum silicate, hydrous magnesium silicate, other calcium, Silicic acid-containing compounds such as sodium-containing silicates can be mentioned. The methylhydrogenpolysiloxane used in the present invention is one that cures by heating and / or an appropriate catalyst to form a hydrophobic film. Other raw materials used in the colorant of the present invention include, as pigments, for example, organic pigments such as azo, phthalocyanine, nitro or nitroso, basic dye, acid dye, and mordant dye pigments; Inorganic pigments such as titanium, graphite, chromium vermillion, ultramarine blue, and red iron oxide, and carbon black can be exemplified.

[0007] In the present invention, as a carrier resin used in the case of master batching, polyethylene resin, polypropylene resin, TPO and the like can be used if necessary. Wax, low molecular weight polyethylene, polystyrene, styrene copolymer, petroleum resin, rosin and other high molecular substances to improve workability and various physical properties, metal soap to improve stability, organic Various additives such as stabilizers such as acid salts and organometallic compounds, other dispersing aids, antioxidants and ultraviolet absorbers can also be used.

The form of the colorant of the present invention is, for example, (1)
Wetting colorant consisting of pigment and wax (in this case, each component
Weight ratio of silicon oxide per 100 parts by weight of pigment
0.5 to 100.0 parts by weight of a compound
0.1 to 20.0 parts by weight of diene polysiloxane and
The preferred range is 20 to 500 parts by weight.
), (2) a powdery colorant comprising a pigment and a metallic soap
(In this case, the weight ratio of each component is 100 parts by weight of the pigment.
0.5 to 100.0 parts by weight of silicon oxide-containing compound per unit
And methyl hydrogen polysiloxane at 0.1 to 2
0.0 parts by weight and metal soap 20 to 500 parts by weight
(3) a pigment, a dispersant and a polyethylene.
Thermoplastic resin such as ren resin, polypropylene resin, TPO
Master batch consisting of a carrier resin such as fat (in this case,
The weight ratio of each component is as follows: silicon oxide per 100 parts by weight of pigment.
0.5 to 100.0 parts by weight of an element-containing compound
0.1 to 20.0 parts by weight of drogen polysiloxane
And dispersant Colorant 10 in the range of 20 to 500 parts by weight
0 to 100 parts by weight of the carrier resin per 0 parts by weight
Is a preferable range).

These colorant compositions for TPO of the present invention are produced by mixing a desired amount of a silicon oxide-containing compound and methylhydrogenpolysiloxane at the time of producing a conventionally known colorant and dispersing the mixture by an ordinary method. I can do things. still,
It is preferable to prepare the pigment so that the silicon oxide-containing compound and methyl hydrogen polysiloxane are brought into contact with each other as much as possible.

[0010]

Next, the present invention will be described more specifically with reference to examples and comparative examples. In the following, "parts" and "%" are based on weight unless otherwise specified. Example 1 Quinacridone Red 45 parts Silicon oxide (trade name: Solex CM, manufactured by Tokuyama Soda) 5 parts Methyl hydrogen polysiloxane (trade name: Silicon SH1107, manufactured by Toray Silicon) 4 parts Polyethylene wax (trade name: Sunwax 151P) (Made by Sanyo Chemical Co., Ltd.) 46 parts The above raw materials were ground with a hot three-roll mill to obtain a wettable coloring agent of the present invention. Comparative Example 1 Quinacridone Red 45 parts Calcium carbonate (trade name: NS-100, manufactured by Nitto Powder Chemical Co., Ltd.) 5 parts Polyethylene wax (trade name: Sun Wax 151P, manufactured by Sanyo Chemical Co., Ltd.) 50 parts The meat was fleshed to obtain a wettable coloring agent of Comparative Example.

The colorants of the above Examples and Comparative Examples were TPO
(Product name: Mirastomer 5030, manufactured by Mitsui Petrochemical)
After adding 3.0 parts to 00 parts, kneading with two rolls at 180 ° C. for 4 minutes, removing the colored sheet, and removing the substance adhering to the rolls with a cleaning compound (white PVC compound). After cleaning, the colored state was compared. Result {Coloring state of cleaning compound (compared with blank)} Example 1 ... color difference (ΔE) 0.1 (no change) Comparative Example 1 ... color difference (ΔE) 33.6 (pink) Colored)

Example 2 Titanium White (trade name: R-820 Titanium White, manufactured by Ishihara Sangyo) 50 parts Silicon oxide (trade name: Shilton A, manufactured by Mizusawa Chemical) 10 parts Methyl hydrogen polysiloxane (trade name: Silicon SH1107) 5 parts Polyethylene resin (trade name: Suntech F2270P, manufactured by Asahi Kasei) 35 parts The above-mentioned raw materials were obtained using an extruder to obtain a master batch of the present invention. Comparative Example 2 Titanium White (trade name: R-820 Titanium White, manufactured by Ishihara Sangyo) 50 parts Talc (trade name: Talc P, manufactured by Shiraishi Calcium) 10 parts Polyethylene resin (trade name: Suntec F2270P, manufactured by Asahi Kasei) 40 parts The master batch of the comparative example was obtained from the raw material using an extruder.

The colorants of the above Examples and Comparative Examples were TPO
(Product name: Mirastomer 6030, manufactured by Mitsui Petrochemical)
After adding 5.0 parts to 00 parts, kneading with two rolls at 180 ° C. for 4 minutes, removing the colored sheet, the degree of whiteness of the color was visually compared with the adhesion state of the color on the roll surface. . Result (visual judgment) Example 2 ... White deposits could not be confirmed. Comparative Example 2 A remarkable white deposit can be confirmed.

Example 3 Phthalocyanine blue 50 parts Calcium silicate (trade name: NW-7P, manufactured by Mizusawa Chemical) 20 parts Methyl hydrogen polysiloxane (trade name: silicon oil KF99 manufactured by Toray Silicon) 3 parts Calcium stearate 27 parts Was mixed with a high-speed mixer to obtain a powdery colorant of the present invention. Comparative Example 3 Phthalocyanine Blue 50 parts Calcium carbonate (trade name: NS-400, manufactured by Nitto Powder Chemical Co., Ltd.) 20 parts Calcium stearate 30 parts The above raw materials were mixed with a high-speed mixer to obtain a powdery colorant of a comparative example.

The colorants of the above Examples and Comparative Examples were
(Product name: Mirastomer 5030, manufactured by Mitsui Petrochemical)
50 parts were added to 5,000 parts, mixed by a high-speed mixer, continuously extruded with a T-die extruder set at 190 ° C. to form a film, and then visually observed the state of adhesion to the die part. And the coloring states were compared. Result (visual judgment) Example 3 ... Almost no coloring. Comparative Example 3 ... markedly colored blue.

[0016]

According to the present invention, 0.5 to 100.0 parts by weight of a silicon oxide-containing compound and 0.1 to 2 parts by weight of methyl hydrogen polysiloxane are contained per 100 parts by weight of a pigment.
By containing 0.0 parts by weight, a colorant for TPO which does not cause a plate-out phenomenon that a pigment adheres to a roll surface or a die surface is provided.

Claims (1)

(57) [Claims] 1. A method according to claim 1, wherein 0.5 to 100.0 parts by weight of silicon oxide or a compound containing the same and 0.1 to 2 parts by weight of methyl hydrogen polysiloxane are used per 100 parts by weight of the pigment.
A colorant composition for an olefin-based thermoplastic elastomer, comprising 0.0 part by weight.