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Dispersant used for solvent-based paint, and application method thereof

A dispersant and solvent-based technology, applied in the dispersant for solvent-based coatings and its application field, can solve the problems of single function and poor dispersion effect, achieve good leveling effect, reduce system viscosity, and increase the effect of filling amount

Inactive Publication Date: 2011-11-09
郭春和
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating dispersant currently used has a single function and only plays a role in dispersing, and the effect of dispersing is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A dispersant for solvent-based paint, the dispersant is a light yellow liquid with a density of 1.05-1.10, a viscosity ≥ 300 Mpa.s, and a pH value of 3-4.

Embodiment 2

[0015] Embodiment 2: the using method of dispersant described in embodiment 1, at first dispersant is diluted with organic solvent, and wherein the volume ratio of dispersant and Virahol is 1: 1; Then the dispersant after dilution is added Grind and disperse the pigments and fillers to obtain emulsions; finally add the emulsions to solvent-based paints for use. The amount of the dispersant is 1% of the total weight of the pigment and the filler.

Embodiment 3

[0016] Embodiment 3: the using method of the dispersant described in embodiment 1, at first dispersant is diluted with organic solvent, and wherein the volume ratio of dispersant and toluene is 1: 1; Then the dispersant after dilution is added titanium dioxide , Polypropylene filler is ground and dispersed to obtain an emulsion; finally, the emulsion is added to a solvent-based coating and can be used. Wherein the amount of the dispersant is 2% of the total weight of the pigment and the filler; the organic solvent is isopropanol, toluene or mineral oil. The method can improve the dispersibility of titanium dioxide in polypropylene. The fillers used in this method can also be hot melt terpene resins, epoxy resins, acrylic resins and alkyd resins.

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Abstract

The invention discloses a dispersant used for a solvent based-paint, and an application method of the dispersant. The dispersant is a light yellow liquid with a density of 1.05 to 1.10, a viscosity greater than or equal to 300Mpa.s, and a pH value of 3 to 4. The application method of the dispersant is that: first, the dispersant is diluted by an organic solvent, wherein a volume ratio of the dispersant to the organic solvent is 1:1; the diluted dispersant is added to a pigment an a filling material, and the resulting material is grinded and dispersed, such that an emulsion is obtained; the emulsion is then added to the solvent-based paint, such that the paint can be used. According to the invention, with the dispersant, the dispersibility and anti-precipitation capacity of various phthalocyanin pigments and metal pigments in an organic phase can be improved; the system viscosity of inorganic substances in an organic phase is substantially reduced, and the filling amount of the inorganic substances is increased. With the method, the tinting strength and the reflectance of the paint can be improved, and the caking property of organic polymers to various metals, glasses, concretes and inorganic materials can be improved. With the method, the leveling effect of the paint is good, and the paint is sagging resisting.

Description

technical field [0001] The invention relates to a paint additive and its use method, in particular to a solvent-based paint dispersant and its use method. Background technique [0002] Dispersants refer to additives that can promote the uniform dispersion of material particles in the medium to form a stable suspension. In the paint production process, pigment dispersion is a very important production link, which is directly related to the storage, construction, appearance and performance of the paint film, etc., so choosing a dispersant reasonably is a very important production link, but the paint The quality of slurry dispersion has a lot to do with the dispersant. The coating dispersant used at present has a single function, only plays the role of dispersion, and the dispersion effect is poor. Contents of the invention [0003] Purpose of the invention: In view of the deficiencies in the prior art, the purpose of the invention is to provide a dispersant for solvent-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12
Inventor 郭春和
Owner 郭春和
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