A kind of cationic styrene-acrylic primer emulsion and preparation method thereof

A cationic and styrene-acrylic technology, applied in the coating and other directions, can solve the problems of salting out or efflorescence of the wall, limited sealing effect, poor water resistance, etc., to improve speed and stability, improve stability, and excellent sealing. Effect

Active Publication Date: 2019-01-25
上海巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, there is almost no reaction ability between the anionic primer emulsion and the salt and alkali released from the wall cement, and it usually only has a sealing effect on the wall, so when encountering freshly constructed cement walls or salt and alkali concentration The anionic primer emulsion cannot fully protect the substrate on taller walls, resulting in the walls being prone to salting out or pan-alkali
Second, the anionic primer emulsion can only seal the wall, and it only has a covering effect on the salt and alkali released from the wall. Therefore, on some loose putty-based walls, the traditional anionic primer The sealing effect of paint emulsion is very limited, and its water resistance is poor, which will lead to peeling, blistering and peeling of the wall

Method used

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  • A kind of cationic styrene-acrylic primer emulsion and preparation method thereof

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preparation example Construction

[0025] The preparation method of cationic styrene-acrylic primer emulsion of the present invention comprises the following steps:

[0026] a) Preparation of pre-emulsion: under normal temperature and pressure, add 20-40% of the total mass of water and 20-60% of the total mass of emulsifier to the container with agitator, and slowly add styrene while stirring , n-butyl acrylate, isooctyl acrylate, high-density cross-linking monomer and hydrophilic monomer, then raise the temperature of the container to 80-85°C, and pre-emulsify for 10-30 minutes to obtain a pre-emulsion for later use;

[0027] b) Under normal temperature and pressure, add the remaining water and emulsifier into the reaction kettle, heat up to 86-88°C while stirring, and add 20-40% of the total mass of the azo initiator after 1-3 minutes after the temperature stabilizes. %, and continue to stir until the azo initiator is completely dissolved;

[0028]c) Add 10-20% of the total mass of the pre-emulsion obtained ...

Embodiment 1

[0034] The cationic styrene-acrylic primer emulsion of the present invention comprises water, styrene, n-butyl acrylate, isooctyl acrylate, dodecyltrimethylammonium chloride, trimethylolpropane, acrylic acid, azobisisobutyl Amidine dihydrochloride, the above components are calculated in parts by mass: 60 parts of water, 5 parts of styrene, 5 parts of n-butyl acrylate, 5 parts of isooctyl acrylate, dodecyltrimethylammonium chloride 1 part, 1 part of trimethylolpropane, 1 part of acrylic acid, 1 part of azobisisobutylamidine dihydrochloride.

[0035] The preparation method of cationic styrene-acrylic primer emulsion of the present invention comprises the following steps:

[0036] a) Preparation of pre-emulsion: under normal temperature and pressure, add 20% of the total mass of water and 20% of the total mass of emulsifier to the container with agitator, and slowly add styrene and n-butyl acrylic acid while stirring Ester, isooctyl acrylate, high-density cross-linking monomer a...

Embodiment 2

[0043] The cationic styrene-acrylic primer emulsion of the present invention comprises water, styrene, n-butyl acrylate, isooctyl acrylate, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethylammonium chloride, trimethylolpropane, propoxylated glycerin triacrylate, dipentaerythritol hexaacrylate, acrylic acid, methacrylic acid, hydroxyethyl ester, hydroxyethyl methacrylate, hydroxypropyl acrylate, Azobisisobutylamidine dihydrochloride and azobisisobutylimidazoline hydrochloride, the above components are calculated in parts by mass: 60 parts of water, 20 parts of styrene, 20 parts of n-butyl acrylate, acrylic acid 20 parts of isooctyl ester, 3 parts of dodecyltrimethylammonium chloride, 3 parts of cetyltrimethylammonium chloride, 4 parts of octadecyltrimethylammonium chloride, trimethylolpropane 1 part, 2 parts of propoxylated glycerin triacrylate, 2 parts of dipentaerythritol hexaacrylate, 1 part of acrylic acid, 1 part of methacrylic acid...

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Abstract

A cationic styrene-acrylic primer emulsion, which includes water, styrene, n-butyl acrylate, isooctyl acrylate, cationic emulsifier, high-density crosslinking monomer, hydrophilic monomer, azo initiator, the above components In terms of parts by mass, they are: 60 parts of water, 5-20 parts of styrene, 5-20 parts of n-butyl acrylate, 5-20 parts of isooctyl acrylate, 1-10 parts of cationic emulsifier, high-density cross-linking unit 1-5 parts of monomer, 1-5 parts of hydrophilic monomer, 1-5 parts of azo initiator. The cationic styrene-acrylic primer emulsion of the present invention has excellent sealing performance on the wall.

Description

technical field [0001] The invention relates to the processing field of architectural coatings, in particular to a cationic styrene-acrylic primer emulsion with a stronger wall base and a preparation method thereof. Background technique [0002] With the continuous development of the economy and the gradual advancement of the urbanization process, there are more and more high-rise buildings in China, and the closure of the wall base of the building's outer wall has always been a technical difficulty in the construction industry. Traditional wall-based paints usually use anionic primer emulsions, but there are two major technical defects in the use of anionic primer emulsions. First, there is almost no reaction ability between the anionic primer emulsion and the salt and alkali released from the wall cement, and it usually only has a sealing effect on the wall, so when encountering freshly constructed cement walls or salt and alkali concentration The anionic primer emulsion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/06C08F222/20C08F220/28C08F2/28C09D133/08C09D125/14
CPCC09D125/14C09D133/08C08F2/28C08F212/08C08F220/18C08F220/1808C08F220/1804C08F220/06C08F222/103C08F222/1006C08F220/281
Inventor 魏世辕杜国旗罗云张水云
Owner 上海巴德富实业有限公司
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