JPS6016987B2 - Antirust pigment composition - Google Patents

Description

[Detailed description of the invention] The present invention relates to a novel antirust pigment composition.

More specifically, the present invention relates to a novel anticorrosive pigment composition comprising condensed aluminum phosphate mixed with one or more of shelf acid compounds and phosphoric acid compounds. Conventionally, zinc chromate (K20, ZnCr04) has been mainly used as a rust-preventing pigment, but recently, the toxicity of chromium has become a problem, so zinc phosphate (Z ratio (P04) 2 / ZH20), which is less toxic, has been used instead. Zinc molybdate (Zn○・MOO3), calcium molybdate (Ca○・MOO3), barium metaborate (Ba○
・&03・日20) etc. have been used, but they are still insufficient in terms of rust prevention ability. As a result of various studies, the present inventors have discovered a pigment composition that is less toxic and exhibits excellent antirust performance. That is, in the present invention, by mixing one or more of shelf acid compounds and phosphoric acid compounds with condensed aluminum phosphate, a pigment composition exhibiting unprecedented rust prevention ability was obtained. The constituent elements of the present invention will be explained in detail below. m Condensed aluminum phosphate In the present invention, condensed aluminum phosphate refers to aluminum monophosphate (mountain 203, spot 205, mother LO) 300
It is heated to a temperature of 0.00 or higher to make it water-resistant.
According to X-ray analysis, the diffraction line of AI203・*2Q and [ratio (
This figure shows the diffraction lines of AiP30,o)・2day20].

■ Shelf acid compounds Shelf acid compounds include Ba, Sr, Ca, and Zn, which are difficult to melt in water.
It is one of the salts, specifically length a0/B203, window a0/B203, 2Ca0/B203, Ca○/B20
3, Ba○・B203, Day 20, Ca(B0
2) 2・Thin 20, Zn (B02) 2, Zno・Wave 203
, B2031 of Beni n0/&03S is ○, etc.

Glue Phosphoric acid compound The phosphoric acid compound is a water-soluble salt of Ba, S, a, or Zn, specifically CaH
P04, Ca3(P04)2, BaHP04, Zn3(
Examples include P04)2, Zn3(P04)2 and Nagi20.

■ Mixing ratio The total amount of palate and phosphate (or shelf salt, phosphate alone) to condensed aluminum phosphate is 0.2~
0. It is effective if the European dimension is 0.8 to 0.2.

[51] Mixing method The condensed aluminum phosphate, shelf acid salt, and phosphate may be mixed by dry mixing or wet mixing, and the temperature may be 10,000 or less, but it may be normally carried out at room temperature.

Alternatively, the raw materials for the condensed aluminum phosphate, the shelving salt, and the phosphate may be mixed in water, and the shelving salt and phosphate are produced while being mixed, and then washed, dried, and pulverized to produce a product. This will be explained below using examples.

Example 1 Condensed aluminum phosphate (Yama 203, Ya 205, Hi 20
SH40P (trade name, manufactured by Taki Chemical Co., Ltd.), a shelf salt, and a phosphate were wet-mixed at room temperature, dried in an oven, and pulverized to obtain a composition as shown in Table 1.

Example 2 The product manufactured in Example 1 was tested for corrosion resistance.

Ship 1 In the case of long-oil alkyd resin [1] Paint composition Table 2 Total wt. 100.0 PWC 370 poly (PVC; 40%) ■ Material for making the test plate Degreased and polished mild steel sheet film Thickness 60 two coats '3' Test results Table 3 Barium metashelfate is 16. 6g mixture o2 For chlorinated rubber primer m Paint composition Table 4 Total wt. 100.0 PWC Ni 60% (PVC Ni 30%) ■ Test plate material Degreased and polished mild steel sheet film Thickness 40 coats (21 coats) ■ Test results Table 5 3 In the case of acrylic resin '1' Paint composition Table 6 Total wt. 100.0 *1) Dainippon Ink Chemical Co., Ltd. Akurigawa resin for brinding *2
) 〃 Butimehimelamine resin PWO=
55 grandchildren (PVO 25%) {2- Test plate material Bonderite #144 treated mild steel plate baking 15
0oo x 30 minutes film thickness 15mm (1-Coat) (3'Test results Table 7 4 Melamine alkyd resin '1') Paint composition Table 8 Total wt. 100.0 PWO = 55% (PVO 30mm) ) *1) Dainippon Ink & Chemical Co., Ltd. Yaiyu-henshaku alkyd resin *2) Buchi'X himelamine resin (
2} Test plate material: Bonderite #144 treated mild steel plate, 130mm x 3 coats, thickness: 20mm (11 coats) {3' Test results Table 9: 10mm barium metashelfate was added to the paint.

5 In the case of water-based baking acrylic resin {1} Paint composition Table 10 Total wt. 100.2 100.2*1
) Sun Horn Mushi Aro Ichisha water-based acrylic resin *2) Tamarochemika Inshu water-based melamine resin PWO = 50 more PVO Ni 2
0*) '2} Test plate creation material Bonderite #144 treated mild steel plate competition 15
0qo x 30 minutes* Film thickness 22 coats (1-Coat) '3} Test results Table 11 qlnc chromate ZPO) and MolyW
Hite lol was excluded from the test because he could not do fractions.

The above test results are summarized as shown in the 12th length, and it can be seen that Compositions-1 to 4 exhibit excellent anticorrosion ability.

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Claims (1)

[Claims] 1. A rust-preventing pigment composition prepared by mixing condensed aluminum phosphate with one or more compounds selected from the group consisting of boric acid compounds and phosphoric acid compounds.