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Modified acrylic oligomer and antifouling paint containing said oligomer

A non-toxic acrylic acid and oligomer technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the problems of unfavorable environmental protection, slow curing speed, volatile coatings, etc., and achieve durable anti-corrosion Pollution effect, good anti-fouling effect

Inactive Publication Date: 2011-12-28
ETERNAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because traditional coatings are volatile, slow curing, and unfavorable to environmental protection, the industry is actively developing radiation curing technology, which uses radiation (especially ultraviolet light) to cause free radical crosslinking of the coating resin to cure.

Method used

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  • Modified acrylic oligomer and antifouling paint containing said oligomer
  • Modified acrylic oligomer and antifouling paint containing said oligomer
  • Modified acrylic oligomer and antifouling paint containing said oligomer

Examples

Experimental program
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preparation example Construction

[0062] The preparation method of the modified acrylic acid oligomer of the present invention is not particularly limited, and the modified acrylic acid oligomer can be prepared by any well-known method of those skilled in the art of the present invention. In the present invention, monomers such as acrylic monomers, fluorinated acrylic monomers and / or siloxane monomers and optional tertiary carboxylate monomers are mixed with appropriate initiators and solvents to carry out Polymerization reaction, and then modify the polymerization product with modifier. The types of initiators and solvents used in the above polymerization reaction are not particularly limited, and are well known to those skilled in the art to which the present invention pertains.

[0063] The modified acrylic oligomer prepared by the present invention has fluorocarbon side chains and / or silicone side chains with low surface energy, which can provide good water repellency and antifouling properties, so it can ...

preparation example

[0096] Preparation of oligomers: Take different proportions of monomers, solvents and appropriate initiators to prepare mixtures 1 and 2 of oligomers and solvents for further modification. The preparation conditions are shown in Table 1 below:

[0097] Table 1

[0098] mixture 1 2 Monomer type and dosage (grams) AAA 13.4 10.5 MAA 0.6 0.6 MMA 39.6 21.8 BA 17.1 -- 2-HPMA 13.2 31.5 Zonyl TM 7.0 3.6 Veova 10 46.6 18.6 n-BMA -- 10.5 IBMA -- 21.8 AS -- 7.0 Solvent (xylene) (g) 88 111 Solvent (PMA) (g) 17.6 17.6 Initiator (TBPB) (g) 0.5 3.0 Reaction temperature (°C) 130℃ 130℃ time 8 hours 8 hours Solid content (weight%) 56.9 49.1

[0099] Preparation of modifiers A and B:

[0100...

Embodiment 1-4

[0107] The mixtures 1 and 2 prepared above were respectively reacted with modifiers A and B to modify the oligomer. Subsequently, the reaction product is mixed with comonomer and other additives to obtain the antifouling coating of the present invention, and the preparation conditions are as shown in Table 2:

[0108] Table 2

[0109] Example 1 2 3 4 Raw material (g) Mixture 1 171 165 -- -- mixture 2 -- -- 171 165 Modifier A 80 -- 70 -- Modifier B -- 68.7 -- 60.1 HDDA 60 60 60 60 1 Etermer 231 186.6 186.6 186.6 186.6 2 Irgacure 184 12.44 12.44 12.44 12.44 Benzophenone (Benzophenol) 12.44 12.44 12.44 12.44 3 Etercure 6420 31.1 31.1 31.1 31.1 4 Eterslip 70 3.11 3.11 3.11 3.11 BYK 141 (defoamer) 0.6 0.6 0.6 0.6 ...

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Abstract

The present invention provides a modified acrylic oligomer comprising polymerized units derived from: (1) acrylic monomers; (2) selected from the group consisting of fluorinated acrylic monomers, siloxane monomers, monomers of the group consisting of monomers and mixtures thereof; and (3) optionally, tertiary carboxylate monomers; wherein the oligomer also comprises monomers derived from epoxy (meth)acrylates, aminomethyl A group of modifiers consisting of ester acrylate, polyester acrylate, 2-hydroxyethyl (meth)acrylate and mixtures thereof. The present invention further provides an antifouling paint comprising the above-mentioned modified acrylic oligomer.

Description

technical field [0001] The invention relates to a modified acrylic acid oligomer and the paint prepared therefrom, especially a radiation-curable antifouling paint. Background technique [0002] Coatings are widely used in buildings, ships, machinery, electronic products, metal products and wood products, etc. The main purpose is to protect and beautify objects. However, due to the fact that the coating may suffer from various external pollutions at any time in the environment of use, such as floating dust in the air, oily smoke, poorly charged conductors, industrial acid rain, etc., if the anti-fouling property of the coating is not good, its decorative effect will be reduced. Short-term deterioration will cause the paint to lose its original color and become black or yellow, impairing its appearance or protective performance. [0003] Conventional technology has used organic fluorinated polymers in the coating industry. The principle is that the surface tension of fluorin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/10C09D5/16C07C67/465C09D4/00C07C69/54
Inventor 王宏宇陈顺凉黄瑞村
Owner ETERNAL MATERIALS CO LTD
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