Hydroxy acrylic ester emulsion containing phosphoester group

A technology of hydroxy acrylate and phosphate group, applied in the field of hydroxy acrylate emulsion, can solve the problem of inability to meet anti-corrosion and other problems, and achieve the effects of improving adhesion, facilitating water-based, and strengthening anti-rust function

Inactive Publication Date: 2009-04-22
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing hydroxyacrylate emulsion is used in water-based anti-corrosion coatings, the water resistance, salt water resistance, and salt spray resistance of the coating film still cannot meet the anti-corrosion requirements, which delays the water-based process of the coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0016] Embodiment 1~6 prepares the hydroxyl acrylate emulsion containing phosphate group

[0017] (1) Raw materials and their proportioning (see Table 1).

[0018] Table 1

[0019] components

raw material name

Dosage

Example

1 Dosage

Example

2 Dosage

Example

3 Dosage

Example

4 Dosage

Example

5 Dosage

Example

6 Hydroxy-free Propylene

Ester monomer

Methyl methacrylate

Butyl acrylate

Isooctyl acrylate 100.0

127.5

80.0 120.0

100.0

105.0 70.0

150.5

99.5 120.0

89.0

106.0 130.0

97.5

70.0 110.0

117.5

100.0 Hydroxy-containing acrylic acid

Ester monomer Hydroxyethyl Acrylate

Hydroxypropyl Acrylate 70.0

/ /

60.0 60.0

/ 75.0

/ 80.0

/ 54.5

/ Phosphate-containing propane

acrylate monomer PAM-100

22.5

15.0

20.0

10.0

22.5

18.0

Initiator Azobisisobutyronitrile 3.0 2.5 / 3.0 ...

Embodiment 7

[0023] Embodiment 7 prepares waterborne two-component anticorrosion coating

[0024] The defoamer TEGO815N, water-based dispersant TEGO715W, and thickener TEGO3000 used are all commercially available products from Germany degus sa company.

[0025] (1) Preparation of pigment filler slurry

[0026] The components and dosage of the pigment filler paste are as follows:

[0027] iron red 30;

[0028] Zinc phosphate 12;

[0029] Mica powder 12;

[0030] Kaolin 16;

[0031] Deionized water 30;

[0032] Water-based dispersant (TEGO715W) 0.7;

[0033] After mixing the above components, use a sand mill to grind to a fineness of less than 50 microns, and store them for future use.

[0034] (2) Preparation of water-based two-component anti-corrosion coatings

[0035] Use the above-mentioned pigment filler slurry and the emulsion obtained in Example 1 to mix in a ratio of 1:1 by weight and add thickener TEGO3000 and defoamer TEGO815N, the addition amount of which is 1 / 2 of the tot...

Embodiment 8

[0038] Embodiment 8 prepares waterborne two-component anticorrosion coating

[0039] (1) Preparation of pigment filler slurry

[0040] Identical to the formula and method of embodiment 7;

[0041] (2) Preparation of water-based two-component anti-corrosion coatings

[0042] Use the pigment filler slurry prepared above and the emulsion obtained in Example 2, mix them at a ratio of 1:1 by weight and add thickener TEGO3000 and defoamer TEGO815N, the amount of which is respectively 1% of the total weight of the above mixture 0.4% and 0.2%, mixed evenly is the first component;

[0043] Use the water-dispersed curing agent Bayhydur3100 produced by Bayer Company of Germany as the second component;

[0044] Mix component A and component B at a weight ratio of 6:1, and stir evenly to obtain the water-based two-component anti-corrosion coating of Example 8.

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PUM

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Abstract

The invention relates to a hydroxyl acrylic emulsion containing phosphate ester groups, which is an emulsion formed by neutralization, salifying, watering and emulsifying of an acrylate copolymer which is formed by copolymerization of acrylate monomers in the presence of an initiator and a hydrophilic solvent. The percentage of the acrylate monomers in the gross weight portion of monomers is as follows: acrylate monomers with hydroxyl account for 5 to 20 percent; acrylate monomers without hydroxyl account for 60 to 90 percent; and acrylate monomers containing the phosphate ester groups account for 1 to 20 percent. The amount of the initiator and the amount of a neutralizing agent account for 0.2 to 1 percent and 1 to 5 percent of the gross weight portion of the acrylate monomers respectively; the ratio of the amount of the hydrophilic solvent to the total amount of the acrylate monomers is 1.0 to 1.5; and the amount of deionized water is at least 80 percent of the amount of the hydrophilic solvent. The emulsion can be taken as aqueous bicomponent anticorrosive coating, and both the anticorrosive property and the adhesive force of the coating are superior to those of coating prepared by the prior acrylic emulsion.

Description

technical field [0001] The invention relates to a hydroxyacrylate emulsion containing phosphate groups. Especially suitable for water-based two-component anti-corrosion coatings. Background technique [0002] At present, anti-corrosion coatings are still mainly solvent-based. However, the volatilization of solvents during film formation of such coatings has caused environmental pollution and harm to human health, and most of the solvents used in coatings are derived from non-renewable petroleum energy, thus resulting in a waste of precious energy. With the enhancement of people's awareness of environmental protection and health and the establishment of energy regulations in various countries, the water-based of solvent-based coatings has become an urgent task. When the existing hydroxyacrylate emulsion is used in water-based anti-corrosion coatings, the water resistance, salt water resistance, and salt spray resistance of the coating film still cannot meet the anti-corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/10C08F230/02C09D133/04C09D5/08C09D5/02C23C22/03C08F220/28
Inventor 周铭李焕丁道宁丁帮勇周树军袁兴
Owner CHINA NAT OFFSHORE OIL CORP
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