Green color latex paint formula view

Formulation characteristics

Compared with the prior art, the color interior wall latex paint production technology that can reproduce the national standard color 0713 (green) described in this technology can reproduce the national standard color 0713 (green) in a shorter period of time, and can also maximize Ensure the accuracy of colors.

Select the latex base paint related to the color paste of the desired color, and mix it evenly through the color mixing machine and the color paint mixer, so that the prepared color latex paint is compared with the standard color card of architectural coatings.

Application field

This product is used for building interior wall decoration.

Recipe details

Production Method

After the above raw materials are prepared, add the formula (parts by mass) of the latex base paint in the water to the cosolvent, dispersant, and defoamer.

Then under low-speed stirring conditions, add wetting agent, defoamer, film-forming aid, emulsion to the above-mentioned dispersed slurry, then add thickener to adjust the viscosity to 90~100KU, add pH adjuster to make the pH value 8.

According to the color latex paint production technology described in this technology, the tinting color paste is composed of Shenzhen Oceanpower's color pastes PG-7, PY-138 and PY-153, and they are injected into units of 1/48Y in proportion.

After debugging, inject it into a special mixing machine for color paint together with the above-mentioned latex base paint to make it evenly mixed in a short time, generally 200~280s, preferably 200~250s.

Precautions

The proportion of each component by mass is in the range of: water 8~12, co-solvent 2~4, dispersant 0.

Among the color pastes, the selected PY-153 is a high-performance golden paste with good weather resistance for exterior walls.

It is a commonly used color paste with high weather resistance for exterior walls.

The pigment content of the color paste is 50%, 1/25 has a weather resistance of 4~5, and 1/25 has a light resistance of 7~8.

As a necessary component in the latex base paint, the emulsion can be divided into different wall surfaces used in the latex paint: emulsion for interior wall latex paint and emulsion for exterior wall latex paint.

Among them, the emulsion for interior wall latex paint is generally acrylate copolymer with an average molecular weight ranging from 150,000 to 200,000, an average particle size of 0.

The emulsion for interior wall latex paint is usually selected: styrene and acrylic acid ester copolymer and vinyl acetate and synthetic fatty acid vinyl ester copolymer.

Among them, the average molecular weight of styrene and acrylate copolymer is in the range of 150,000 to 200,000, the average particle size is 0.

Vinyl acetate and synthetic fatty acid vinyl ester copolymers have an average molecular weight ranging from 150,000 to 200,000, an average particle size of 0.

Depending on the wall surface used, the choice of titanium dioxide in the latex base paint is also different.
Generally, the rutile type is used for exterior wall paint.
Among them, TiO2 content> 95%, rutile content to 98%, oil absorption <20g/100g;

Color reducing power Reynolds number 1800, ASTM D476I, dish type and ISO591 R2 type; interior wall paint uses anatase type.
Among them, the content of TiO2 is 98%, the oil absorption is less than 24g/100g, and the color reducing power (compared with the standard sample) is ≥95%.

If the formulated latex paint has medium hiding power (contrast ratio 0.
75~0.
85), choose the darker paint titanium dioxide, usually add 120~150g/L paint;

If it is low hiding power (contrast ratio 0.
05~0.
25), choose the paint titanium dioxide used to adjust the saturated dark color, and its addition can be 0g/L paint, if it is high hiding power (contrast ratio 0.
9~0.
96), use adjustment For light-colored titanium dioxide, 240 ~ 300g/L paint is usually added.

The filler used in the latex base paint can be barite powder or mica powder.
Among them, barite powder has better acid resistance, gloss and color retention.
Mica powder has a flaky structure that can improve the UV resistance of the coating and improve the coating.
Weather resistance.

The dispersant is a hydrophobically modified polycarboxylate dispersant.
At the same time, it has an adsorption effect on inorganic and organic pigments, has strong color development, strong water resistance, and an average molecular weight of 100-5000.

The wetting agent is a combination of 1~2 non-ionic wetting agents with different hydrophilic and lipophilic balance values.
Adjusting the HLB of the coating system to 12~13 can adjust the wetting performance and color development of the coating to the greatest extent.
Color pastes with different hydrophilic or hydrophobic properties achieve good compatibility.

In order to eliminate the bubbles generated in the production and coating process of the paint, when preparing the latex base paint, add an appropriate amount of defoamer to it.
The defoamer used can be aliphatic hydrocarbon composite defoamer, and the defoaming active substance is polyethylene wax.
, Metal soap, hydrophobic inorganic silicon and organopolysiloxane, polyethylene glycol and propylene glycol ethers, etc.

According to the use of latex paint, you can choose to add preservatives to the latex base paint to ensure the performance of the latex paint.
Preservatives can be triazine nitrogen-containing heterocyclic compounds, 4,4-dimethyl azolidine and its trimethyl homologues, etc.

The pH adjusting agent can be 2-amino-2-methyl-1-propanol, dimethylaminoethanol, diethylethanolamine, ammonia isopropanolamine and the like.

The thickener can be a hydratable thickener, such as hydrophobically modified polyacrylic acid reduced swelling type, hydroxyethyl cellulose ether, polyurethane type and the like.

C12 alcohol ester is selected as the film-forming assistant.

Quality Index

• PVC/ %: 34
• Viscosity (ASTM D5622001)/KU: 90
• Thixotropic Index (T1 ASTMD2196—91): 3.
  86
• Contrast ratio: 0.
  956
• Gloss (60°): 9.
  4
• Scrubbing resistance/time: 2000
• Alkali resistance: 48h without exception
• Water resistance: 96h without exception
• Weather resistance: 520h without exception
• Storage stability (50C, 30 days)/KU: 92