Yellow inorganic pigment taking bismuth and vanadium as basic adulterants as well as preparation method and application thereof

An inorganic pigment and basic technology, applied in inorganic pigment processing, chemical instruments and methods, fibrous fillers, etc., can solve the problems of dull color, complex bismuth vanadate process, poor tinting strength, etc., and achieve high tinting strength and vividness. And the effect of good gloss and excellent weather resistance

Inactive Publication Date: 2017-01-25
湖南汉瑞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some of the prepared bismuth vanadate have complex processes, some are dull in color, and some have poor tinting power.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 (molybdenum bismuth vanadium)

[0044] 107.7 grams of bismuth nitrate in acetic acid solution (specific gravity 1.607 g / cm 3) into a 5-liter reactor, add hot water to adjust to 0.570 L and adjust the temperature to 70°C. A 3.6 liter solution containing 14.779 grams of sodium vanadate and 18.333 grams of sodium molybdate was added with stirring. The dropwise addition was performed within 2 hours. During this time, the pH of the added reaction mixture gradually rose to 0.5; adjusted to 4.5 by dropwise addition of 63 ml of 50% caustic soda. The water bath was heated to 70° C., and after stirring for 1 h, the pH was stabilized at 3.81 h. Then, the mixture was filtered, washed, and dried at 90° C. for 12 hours to obtain 85.5 g of a precursor. Then, the yellow pigment obtained at 620° C. was ball-milled in a ball mill, filtered, dried and ground to obtain the product.

Embodiment 2

[0045] Embodiment 2 (pure bismuth vanadate)

[0046] A sample of pure bismuth vanadate was prepared according to the method of Example 1, except that sodium molybdate was omitted: to 48.98 grams of bismuth nitrate was added 15.12 sodium metavanadate.

Embodiment 3

[0047] Embodiment 3 (silicon coated bismuth vanadate)

[0048] According to the procedure described in Example 1, silicon coated bismuth vanadate was prepared by mixing 102.240 grams of bismuth nitrate, 28.700 grams of sodium vanadate and 3.750 grams of sodium metasilicate. Tinting power and hiding power are higher than the pure bismuth vanadate of embodiment 2.

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Abstract

The invention relates to a yellow inorganic pigment taking bismuth and vanadium as basic adulterants. The chemical formula of the inorganic pigment compound is BiaAbBcCdO4, wherein: A comprises one or more of Si, Ti, Ge, Zr, B, Al, Ga, In or TI; B comprises one or more of V, Nb or Ta; and C is either Mo or W. The yellow inorganic pigment with bismuth and vanadium adulterants has the advantage of better vividness and glossiness than yellow inorganic pigment without bismuth and vanadium adulterants. A bismuth-vanadium yellow inorganic pigment prepared by the technology disclosed in the invention has the advantages of high tinting strength (125>=relative tinting strength>=100), good heat resistance (320 DEG C>=heat resistance>=250 DEG C), high covering power, excellent weather fastness, environmental protection and nontoxic performance, thereby being widely applied to plastics, high-end car coatings or industrial paint.

Description

technical field [0001] The invention relates to a bismuth-vanadium-based doped yellow inorganic pigment, a method for manufacturing the inorganic yellow pigment based on bismuth-phosphorus-vanadium or bismuth-silicon-vanadium and obtaining the pigment. Background technique [0002] Bismuth vanadate pigment has excellent performance of environmental protection and non-toxicity, so it can be used to replace pigments containing toxic elements such as lead, cadmium, chromium, etc. It is a new type of pigment with bright prospects for occasions with high performance requirements. [0003] There are mainly tetragonal zircon type, monoclinic scheelite structure and tetragonal scheelite structure. Among them, monoclinic bismuth vanadate is suitable for use as a yellow pigment, but the temperature resistance is not enough, and it can only withstand ≤250°C at most. Nylon, P66, PA66, polycarbonate resin, ABS, etc. cannot reach 280°C. [0004] The doped bismuth vanadate has excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06
CPCC09C1/00C09C3/06
Inventor 张家松柳斌喻红忠
Owner 湖南汉瑞新材料科技有限公司
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