JP2007023122A - Paste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems: powder in a light and soft state having ≤1.0 bulk specific gravity is very difficult to be uniformly mixed with a liquid substance such as a resin or the like and in a condition of undissolved lump of flour and troubles such as strong agitation, passing through a roll or the like are required for uniformly mixing the powder. <P>SOLUTION: A paste comprising a polar solvent such as an alcohol, a polyhydric alcohol, an amine acid or the like, a plasticizer such as a phthalic acid ester, a fatty acid ester or the like and a metal soap and a powder having ≤1.0 bulk density such as hydrotalcite or the like is prepared and blended with a liquid substance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a powder paste.

Conventionally, inorganic compound powders with low specific gravity do not disperse uniformly when mixed with other components.
There was a problem.

In the present invention, it is extremely difficult to uniformly mix a so-called fluffy powder having a bulk specific gravity of 1.0 or less into a liquid material such as a resin, and the so-called fluffy state has been formed. . In order to mix uniformly, steps such as intense stirring and passing through a roll were required. The present invention
The purpose is to solve these problems.

The present invention is based on the finding that by mixing powder having a bulk specific gravity of 1.0 or less and a polar solvent into a paste, the paste can be easily and uniformly dispersed by adding the paste.
Powder with a bulk specific gravity of 1.0 or less is metal soap (zinc stearate, magnesium stearate),
Various inorganic fine powders (mica, talc, silica fine powder SiO2, nepheline site, diatomaceous earth, etc.),
Various pigment fine powders (carbon black, titanium oxide, etc.), magnesium hydroxide, magnesium oxide, hydrotalcite and the like can be mentioned.

Polar solvents include alcohols (methanol, ethanol, isopropyl alcohol, etc.), glycols (ethylene glycol, propylene glycol, diethylene glycol,
1.4 butanediol, 1.6 hexanediol, etc.), glycerins, acrylic acids, amines, etc., and is an inorganic powder having a small specific gravity and an affinity liquid organic compound. Examples of the plasticizer include phthalic acid esters and fatty acid esters.

What is necessary is just to select suitably the mixing ratio of an inorganic powder compound and a polar solvent so that it may become the viscosity of a desired paste. Pasting is completed by charging the powder into a polar solvent and mixing with a stirrer until uniform.

  The paste according to the present invention, which has been difficult to disperse in a resin or the like until now, can be easily dispersed. For example, the stabilizer added at the time of vinyl chloride processing, the additive added at the time of FRP manufacture, and the powder added at the time of paint manufacture are mentioned.

  As in the example.

表1に示した溶媒と微粉末を混合しペーストとした結果は、第2表に示す。

Hereinafter, the present invention will be specifically described with reference to examples.
Isopropyl alcohol, 2-ethylhexyl alcohol, and ethylene glycol were used as the solvent.
Solvents alone and mixtures were prepared. Table 1 shows.

The results of mixing the solvent shown in Table 1 and the fine powder to make a paste are shown in Table 2.

Claims (7)

Paste consisting of powder with polar solvent or plasticizer 2. The paste according to claim 1, wherein the polar solvent is an alcohol, a polyhydric alcohol, or an amino acid. The paste according to claim 1, which is a powder having a bulk specific gravity of 1.0 or less. 2. The paste according to claim 1, wherein the powder is metal soap or hydrotalcite. The paste according to claim 1, wherein the plasticizer is a phthalate ester or a fatty acid ester. 2. The paste according to claim 1, wherein the solvent is a mixture of ethylene glycol and 2-ethylhexyl alcohol. The paste according to claim 1, wherein the solvent is 50% to 60% and the powder is 40% to 50%.