Copper-free environmentally friendly self-polishing marine antifouling coating

A self-polishing, matrix resin technology, used in anti-fouling/underwater coatings, anti-corrosion coatings, coatings, etc., can solve the problems of entering the food chain, marine environmental hazards, destroying the marine ecological balance, etc. Pollution period effect and effect of saving heavy metal resources

Active Publication Date: 2019-04-19
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve a good antifouling effect, traditional antifouling coatings have added a large amount of organic tin, DDT, cuprous oxide and other substances harmful to the marine environment, causing serious harm to the marine environment.
For example, organotin will accumulate in fish and shellfish and cause genetic variation, and may enter the food chain; DDT is extremely difficult to degrade in the marine environment, and can accumulate in organisms and penetrate into all links in the food chain, causing genetic mutations; Cuprous oxide will accumulate in large quantities in the harbor, causing a large number of plankton and algae to die, seriously disrupting the ecological balance of the ocean

Method used

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  • Copper-free environmentally friendly self-polishing marine antifouling coating
  • Copper-free environmentally friendly self-polishing marine antifouling coating
  • Copper-free environmentally friendly self-polishing marine antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1a. Preparation of Acrylic Prepolymer

[0037] Add 25 parts of propylene glycol methyl ether, 65 parts of xylene and 5 parts of ethyl acrylate into a four-necked flask equipped with a stirring device, a condenser, a dropping funnel, and a thermometer, and stir and heat to 105°C. A mixed liquid consisting of 30 parts of methyl methacrylate, 25 parts of ethyl acrylate, 10 parts of butyl acrylate, 30 parts of acrylic acid, and 2.5 parts of azobisisobutyronitrile was added dropwise from the dropping funnel for 3 hours. After the dropwise addition, keep warm for 0.5 hours, add 0.5 parts of azobisisobutyronitrile and 10 parts of xylene, keep warm for another 2 hours, cool down and discharge to prepare acrylic acid prepolymer.

[0038] 1b. Preparation of matrix resin A-1 with self-polishing properties

[0039] In a three-neck flask equipped with a stirring device, a condenser, and a thermometer, add 300 parts of the acrylic acid prepolymer prepared in the above step 1a, 50.8 ...

Embodiment 2

[0041] 2a. Preparation of methacrylic acid prepolymer

[0042] Add 25 parts of n-butanol, 65 parts of xylene and 5 parts of ethyl acrylate into a four-necked flask equipped with a stirring device, a condenser, a dropping funnel, and a thermometer, and stir and heat to 105°C. A mixed liquid consisting of 25 parts of methyl methacrylate, 20 parts of ethyl acrylate, 20 parts of butyl acrylate, 30 parts of methacrylic acid, and 2.5 parts of azobisisobutyronitrile was added dropwise from the dropping funnel for 3 hours. After the dropwise addition, keep warm for 0.5 hours, add 0.5 parts of azobisisobutyronitrile and 10 parts of xylene, keep warm for another 2 hours, cool down and discharge to prepare methacrylic acid prepolymer.

[0043] 2b. Preparation of matrix resin A-2 with self-polishing properties

[0044] In a there-necked flask equipped with a stirring device, a condenser, and a thermometer, add 300 parts of methacrylic acid prepolymers prepared in the above-mentioned step...

Embodiment 3

[0046] 3a. Preparation of Acrylic Prepolymer

[0047] In a four-neck flask equipped with a stirring device, a condenser, a dropping funnel, and a thermometer, add 25 parts of propylene glycol methyl ether, 60 parts of xylene and 5 parts of cyclohexyl methacrylate under stirring, and heat to 105°C. From the dropping funnel, add dropwise a mixed liquid consisting of 30 parts of isooctyl acrylate, 25 parts of cyclohexyl methacrylate, 20 parts of methoxyethyl acrylate, 20 parts of acrylic acid, and 2.5 parts of azobisisobutyronitrile. Hours. After the dropwise addition, keep warm for 0.5 hours, add 0.5 parts of azobisisobutyronitrile and 10 parts of xylene, keep warm for another 2 hours, cool down and discharge to prepare acrylic acid prepolymer.

[0048] 3b. Preparation of matrix resin A-3 with self-polishing properties

[0049] In a three-necked flask equipped with a stirring device, a condenser, and a thermometer, add 300 parts of the acrylic acid prepolymer prepared in the a...

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PUM

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Abstract

A copper-free environmentally friendly self-polishing marine antifouling paint, which is composed of a base resin A with self-polishing properties, an organic antifouling agent B without any copper antifouling agent, pigments and fillers C, additives D, and solvent E. The matrix resin A is characterized in that the preparation process is divided into two steps, the first step: under the action of an initiator, acrylic acid or methacrylic acid is mixed with other metal-free ethylenically unsaturated monomers at a certain temperature a1 Carry out free radical copolymerization in a certain amount of solvent to prepare acrylic acid or methacrylic acid prepolymer, the second step: the prepolymer prepared by the first step and a saturated organic acid and zinc oxide or hydroxide The compound or zinc salt is refluxed and reacted at a certain temperature, and the reaction can be stopped until the obtained slip-out reaches the expected value, and the matrix resin A is obtained.

Description

technical field [0001] The invention relates to a copper-free environmental protection self-polishing marine antifouling coating. The antifouling coating has good self-polishing performance, does not contain any copper antifouling agent, can greatly reduce copper emissions, and save a large amount of heavy metal resources. It has no pollution to the marine environment and is of great significance in protecting the marine environment. Background technique [0002] Anti-fouling paint is a special marine paint that is applied to the bottom of the ship to prevent marine organisms from attaching and fouling, and to keep the bottom of the ship smooth and clean. Its purpose is to reduce ship navigation resistance, save fuel consumption and reduce CO 2 emissions, reduce the carbon footprint of ships, and slow down the global greenhouse effect. Therefore, the application of antifouling coatings is very consistent with the international policy guidelines for energy conservation and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D133/08C09D133/02C09D133/10C09D5/16C09D5/08C09D7/61C09D7/63C09D7/65C08F220/14C08F220/06C08F220/18C08F220/28C08F220/22C08F8/44
CPCC09D133/02C09D133/08C09D133/10C09D133/12C08F8/44C08F220/06C08F220/14C08F220/18C08K3/346C08K5/3415C08K5/36C08K9/04C08K13/06C09D5/08C09D5/1625C09D5/1668C08F220/1808C08L91/06C08K13/02C08F220/281C08F220/22C08F220/1804C08F220/1802
Inventor 于雪艳王科张华庆陈正涛从巍巍桂泰江
Owner MARINE CHEM RES INST CO LTD
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