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Preparation method of mildewproof waterborne coating

A water-based coating and anti-mildew technology, which is applied in the direction of anti-fouling/underwater coatings, coatings, fibrous fillers, etc., can solve the problem of poor persistence of inorganic anti-fungal agents, aging and decomposition of organic anti-fungal agents, and affecting coating film formation Solve problems such as resistance, achieve excellent application value, fast curing, and strengthen the effect of film formation

Active Publication Date: 2014-01-22
BIOMEDY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of inorganic antifungal agents is poor, and many additives need to be added, and the processing cost is high; organic antifungal agents will age and decompose, resulting in a decline in the antifungal effect and affecting the film-forming properties of the coating.

Method used

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  • Preparation method of mildewproof waterborne coating
  • Preparation method of mildewproof waterborne coating
  • Preparation method of mildewproof waterborne coating

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0027] Synthesis Example 1 Synthesis of hydroxyl-terminated polysiloxane

[0028] Under the protection of nitrogen, add 20g of 3-glycidyl etheroxypropyl trimethoxysilane and 2g of tetramethyltetravinyl cyclotetrasiloxane into 40g of distilled water, mix well, then add 0.001g of tetramethyl sodium hydroxide , heat up to 60°C, stir and react for 30 minutes, then add 6g of hydroxy silicone oil, heat to 80°C, react for 20 minutes, cool down naturally, let stand to separate layers, take the lower layer solution, wash with water, and dry to obtain hydroxyl-terminated polysiloxane. Molecular weight 900~1500.

Synthetic example 2

[0029] Synthetic Example 2 Synthesis of bromine-containing compounds

[0030] Add 80g of potassium bromide and 0.4g of sodium silanolate to 100g of diethylene glycol, stir and react in an ice-water bath for 3 hours, raise the temperature to room temperature, and stir for 2 hours to react; wash the reaction product twice with water, separate the organic layer, anhydrous magnesium sulfate Drying, filtering, and distilling out the product under reduced pressure are bromine-containing compounds; the reaction formula is as follows:

[0031]

Synthetic example 3

[0032] Preparation of Synthetic Example 3 Composite Filler

[0033] Mix 500g of raw shell powder and 100g of aluminum phosphate evenly and sinter at 600°C for 25min, then crush the sintered body and select powder with a particle size of 0.8-1.2μm; then carry out surface treatment on the powder, specifically put 200g of powder into Add 2000g of ethanol and 2.2g of hydroxyl-terminated polysiloxane powder into the container, stir for 45min, and finally dry to obtain the composite filler.

[0034] Preparation of synthetic example 4 antifungal agent

[0035] The main reactions are as follows:

[0036]

[0037] Add 100 g of bromine-containing compound, 40 g of methyl p-hydroxybenzoate, and 12 g of potassium carbonate to 80 g of butanone, reflux for 2 hours, cool to room temperature, filter with suction, and dry the filter residue at 80° C. for 1 hour to obtain a solid powder; Solid powder, lanthanum trifluoromethanesulfonate (La(OTf) 3 ) 1g and imidazole 260g are mixed uniform...

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PUM

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Abstract

The invention discloses a preparation method of a mildewproof waterborne coating. The mildewproof waterborne coating is prepared by mixing the following raw materials in percentage by weight: 30-35% of a silicone acrylic emulsion, 10-13% of composite filler, 6-8% of mildew preventive and the balance of water. Due to the raw materials used by the invention, the coating is not only excellent in adhesion and flame retardance, but also can further improve the mildewproof performance of the system. The components of the mildewproof waterborne coating are reasonable in proportioning and strong in compatibility, so that the coating obtained is long in storage life, environment-friendly and simple in preparation method, and can be applied to the fields such as architectural ornament.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a method for preparing a mold-proof water-based paint. Background technique [0002] Coatings are a mixture of polymer substances and ingredients, and can be coated on the surface of the substrate to form a new type of polymer material that adheres firmly and continuously. [0003] Any paint that uses water as a solvent or as a dispersion medium can be called a water-based paint. The biggest difference between water-based coatings and solvent-based coatings is that most of the organic solvents in the coatings are replaced by water, which is composed of water, organic matter, fillers, etc. Water-based coatings are the development trend of the architectural decoration industry. They have the following characteristics: use water as a solvent, save resources, reduce the risk of fire during construction, and reduce air pollution; Good adaptability; spraying too...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D5/14C09D7/12C08F120/18C08G77/38C09C1/40C09C3/12C07D233/60
Inventor 李海蓉
Owner BIOMEDY LIMITED
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