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Mildewproof waterproof coating composition

A technology of waterproof coatings and compositions, applied in antifouling/underwater coatings, rosin coatings, polyurea/polyurethane coatings, etc., which can solve the problems of insufficient waterproof, anti-seepage and anti-mildew properties, low tensile strength, and poor use Inconvenient and other problems, to achieve the effect of strong randomness, high tensile strength and elongation at break, and strong washing resistance

Active Publication Date: 2008-11-05
NANJING CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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[0008] Acrylic waterproof coatings are made of polyacrylate as the main film-forming substance and other raw materials are added. However, acrylic waterproof coatings have low tensile strength and poor weather resistance.
However, the current acrylic waterproof coatings cannot fully meet the requirements of civil engineering in terms of waterproof, anti-seepage and anti-mildew properties.

Method used

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  • Mildewproof waterproof coating composition
  • Mildewproof waterproof coating composition

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A) Preparation of polymer emulsion

[0049] In the dispersing tank, under stirring at a rotating speed of 100-400r / min, add 70 parts by weight of acrylic emulsion, 12 parts by weight of water-based polyurethane and 5 parts by weight of tall oil rosin, 3 parts by weight of propylene glycol and 10 parts by weight of water, Stir for 10 minutes to obtain a polymer emulsion.

[0050] B) Preparation of filler slurry

[0051] In a high-speed dispersing kettle, add 15 parts by weight of chromium aluminum phosphate, 2 parts by weight of KH-550, 1 part by weight of DCOIT, 2 parts by weight of magnesium aluminum silicate and 80 parts by weight of deionized water, at 500-1000r Disperse and stir at 2000-3000r / min for 30-60 minutes, then transfer it to a colloid mill for grinding at 2000-3000r / min for 1-2 hours until the fineness reaches below 10μm.

[0052] Add the prepared filler slurry into the polymer emulsion, the ratio of the polymer emulsion to the filler slurry is 10:8, and...

Embodiment 2

[0054] A) Preparation of polymer emulsion

[0055] In the dispersing tank, under stirring at 100-400r / min, add 60 parts by weight of acrylic emulsion, 10 parts by weight of water-based polyurethane and 5 parts by weight of hydrogenated rosin, 3 parts by weight of propylene glycol and 22 parts by weight of water, and stir After 10 minutes, a polymer emulsion was obtained.

[0056] B) Preparation of filler slurry

[0057] In the high-speed dispersion kettle, add 20 parts by weight of hydroxyapatite, 1 part by weight of KH-550, 1 part by weight of CIT, 2 parts by weight of magnesium aluminum silicate and 76 parts by weight of deionized water, at 500-1000r Disperse and stir at 2000-3000r / min for 30-60 minutes, then transfer it to a sand mill for grinding, and grind for 40-60 minutes at 2000-3000r / min until the fineness reaches below 30μm.

[0058] Add the prepared filler slurry into the polymer emulsion, the ratio of the polymer emulsion to the filler slurry is 10:10, and stir eve...

Embodiment 3

[0060] A) Preparation of polymer emulsion

[0061] In the dispersion kettle, under 100-400r / min rotating speed stirring, add 60 parts by weight of acrylic acid emulsion, 10 parts by weight of water-based polyurethane and 5 parts by weight of disproportionated rosin, 3 parts by weight of propylene glycol and 22 parts by weight of water, and stir After 10 minutes, a polymer emulsion was obtained.

[0062] B) Preparation of filler slurry

[0063] In the high-speed dispersion kettle, add 20 parts by weight of hydroxyapatite, 1 part by weight of KH-550, 1 part by weight of CIT and 78 parts by weight of deionized water, and disperse and stir at 500-1000r / min for 30-60 minutes, then transfer it to a sand mill for grinding, and grind for 40-60 minutes at 2000-3000r / min until the fineness reaches below 30μm.

[0064] Add the prepared filler slurry into the polymer emulsion, the ratio of the polymer emulsion to the filler slurry is 10:10, and stir evenly to obtain the coating composit...

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Abstract

The invention relates to an anti-leakage, anti-seepage and anti-mildew acrylic ester waterproof coating compound used for buildings, which mainly consists of acrylic ester emulsion, polyamino acid emulsion, rosin resin, anti-mildew agent and filler. A coating film formed after the coating is used is characterized by high tensile strength and high elongation at break, which can make up cracks already existing and in developing on the wall and can be directly scrubbed, with strong scrubbing resistance. The coatings of the invention can be coated on moist building surfaces and can not go mouldy, thus being applicable to cement, metal, wood and paper surfaces and playing the role of waterproof, anti-seepage and anti-mildew.

Description

technical field [0001] The invention relates to a mildew-proof and waterproof paint composition for building, in particular to an acrylic ester-based waterproof paint composition used for leak-proof, seepage-proof and mildew-proof of buildings. technical background [0002] The waterproof, anti-seepage and anti-mildew problems of buildings are related to people's working and living environment, and also affect the service life of buildings. Therefore, people have never stopped seeking a perfect waterproof coating composition. [0003] Acrylic resins have been reported in the patent literature as waterproofing materials. [0004] For example, CN101161740A discloses a multifunctional decorative paint, wherein, the specific component is a quaternary copolymer emulsion composed of methacrylic acid, butyl acrylate, styrene and methyl methacrylate, etc., and the filler is nano-scale silver, silicon Sodium acid, iron oxide, silicon dioxide, calcium carbonate, etc., and various ad...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/14C09D5/16C09D175/04C09D193/04
Inventor 朱承胜
Owner NANJING CONSTR ENG GRP
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