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Solid watercolor and preparation method thereof

A watercolor paint and production method technology, applied in starch paint, polyether paint, art paint, etc., can solve the problems of unsatisfactory packaging and use convenience, easy deterioration of paint, etc. No dust pollution, easy to pack

Inactive Publication Date: 2010-09-15
贝碧欧美术颜料(昆山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional liquid state, the solid pigment has lower requirements on packaging and is more convenient to carry, store and transport. However, the solid pigment has strong viscosity and water absorption, and the convenience of packaging and use is still unsatisfactory. Moreover, its water absorption also causes the pigment to deteriorate easily

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of solid watercolor pigment, based on the total weight of the watercolor pigment, its raw material formula is: 20 parts of gum arabic, 25 parts of polyethylene glycol 6000, 6 parts of white lake essence, 5 parts of glycerin, 30 parts of calcium carbonate, 5 parts of kaolin 1 part, 7 parts of titanium dioxide, 0.8 part of polycarboxylate sodium salt dispersant, 1 part of nonionic wetting agent and 0.2 part of antifungal agent. The pigment is prepared into blocks by the following steps:

[0021] (1), take each raw material in proportion;

[0022] (2) Preheat the airtight kneader and screw extruder, put all the powder raw materials into the airtight kneader, use the pulverizer to pre-mix and disperse the powder raw materials, then add the liquid raw materials, after fully stirring, heat to 75 ° C, pass Screw extruder extrusion molding;

[0023] (3), cooling the extrudate of step (2) to make it harden, and cutting into blocks to obtain block-shaped watercolor paint...

Embodiment 2

[0026] A kind of solid watercolor pigment, based on the total weight of the watercolor pigment, its raw material formula is: 18 parts of gum arabic, 28 parts of polyethylene glycol 8000, 5 parts of glycerin, 30 parts of calcium carbonate, 5 parts of kaolin, 12 parts of fast red 1.8 parts, 1.8 parts of polycarboxylate sodium salt type dispersant and 0.2 parts of antifungal agent. According to the method identical with embodiment 1, make block watercolor paint.

[0027] Watercolor pigments have been tested: fineness ≥ grade 8 (10 parts aqueous solution, GB / 1724-79); average density 1.80g / cm 3 , water absorption < 1 part (24 hours * 25 ℃), low viscosity (the phenomenon of sticking to the box will not occur).

Embodiment 3

[0029] A kind of solid watercolor pigment, based on the total weight of the watercolor pigment, its raw material formula is: 18 parts of gum arabic, 25 parts of polyethylene glycol 8000, 7 parts of glycerin, 31 parts of calcium carbonate, 5 parts of kaolin, 15 parts of carbon black , 2 parts of polycarboxylate sodium salt type dispersant, 2 parts of nonionic wetting agent. According to the method identical with embodiment 1, make block watercolor paint.

[0030] Watercolor pigments have been tested: fineness ≥ grade 8 (10 parts of aqueous solution, GB / 1724-79); average density 1.80g / cm3, water absorption < 1 part (24 hours * 25°C), low viscosity (no sticking to on the box).

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Abstract

The invention relates to solid watercolor which comprises the following components in parts by weight: 15-20 parts of Arabic gum, 25-30 parts of polyethylene glycol with average molecular weight of 6000-8000, 5-8 parts of dextrin or soluble starch or combination thereof, 3-15 parts of glycerol, 35-43 parts of filler, 5-20 parts of colorant and 0.5-2 parts of dispersant. The preparation method comprises the steps of processing all raw materials in a sealed kneader, extrusion molding through a screw extruder, cooling and hardening. The solid watercolor has low water absorbability, poor viscosity and is convenient to package, store and use. The preparation method has no dust pollution, greater compactness of the obtained product and no need of water as a dispersing medium, and extrusion molding is preformed in one step by the screw extruder without roasting to remove water later, thereby saving energy resources.

Description

technical field [0001] The invention relates to a solid watercolor paint and a preparation method thereof. Background technique [0002] At present, there are two kinds of general-purpose art watercolor paints: solid and liquid. Chinese invention patent ZL200610063780.X discloses a solid paint pigment, which includes 40-70 wt parts of filler, 10-30 wt parts of binder and 5-35 wt parts of toner; the filler is calcium carbonate, talcum powder and kaolin One or a combination of more than one of them, the binder is one or a combination of lake essence and soluble starch. When preparing, you only need to mix the components. When using, take the solid paint according to the required amount and add water to reconcile. In order to make the components dispersed and mixed more uniformly, the pigment component can also include 0.2-0.4 wt parts A dispersant selected from one or a combination of naphthalenesulfonate and sodium tripolyphosphate. Compared with the traditional liquid sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/06C09D171/08C09D105/00C09D105/16C09D103/02
Inventor 让·吕克·纪夏沈健
Owner 贝碧欧美术颜料(昆山)有限公司
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