Low-water-absorptivity stone-like coating emulsion and preparation method thereof

A low water absorption, real stone paint technology, applied in the field of architectural coatings, can solve the problems of local deep color, water absorption and softening, blooming, etc., and achieve the effect of small molecular weight, small CMC value, and effective penetration

Inactive Publication Date: 2017-05-10
成都巴德富科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, when the real stone paint encounters water, it absorbs water and becomes soft, white, and partially dark in color.

Method used

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  • Low-water-absorptivity stone-like coating emulsion and preparation method thereof
  • Low-water-absorptivity stone-like coating emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Prepare a low water-absorbing real stone paint emulsion, comprising the following steps in order:

[0047] (1) Weigh the following raw materials in parts by weight for later use: 35 parts of methyl methacrylate, 10 parts of styrene, 30 parts of isooctyl acrylate, 3 parts of methylene succinic acid, 2 parts of glycidyl methacrylate , 3 parts of sodium dodecylbenzenesulfonate, 2 parts of sodium persulfate, 100 parts of water;

[0048] (2) At room temperature, fully stir styrene, isooctyl acrylate, glycidyl methacrylate, and 70% methyl methacrylate in an emulsification tank to obtain a mixture A for later use;

[0049] (3) Sodium dodecylbenzenesulfonate, methylene succinic acid, and 97% water were added to the reaction kettle, and fully stirred evenly to obtain mixture B;

[0050](4) The mixture B was heated up to 78°C, then 80% sodium persulfate was added and stirred for 10 minutes, then the mixture A was added dropwise to the reaction kettle at a constant speed, and the...

Embodiment 2

[0056] Prepare a low water-absorbing real stone paint emulsion, comprising the following steps in order:

[0057] (1) Weigh the following raw materials in parts by weight for later use: 40 parts of methyl methacrylate, 5 parts of styrene, 30 parts of isooctyl acrylate, 2 parts of methylene succinic acid, and 3 parts of allyl methacrylate , 2 parts of fatty alcohol epoxy ester ammonium sulfate, 3 parts of potassium persulfate, 100 parts of water;

[0058] (2) At room temperature, fully stir styrene, isooctyl acrylate, allyl methacrylate, and 80% methyl methacrylate in an emulsification tank to obtain mixture A, and set aside;

[0059] (3) Add fatty alcohol epoxy ester ammonium sulfate, methylene succinic acid, and 96% water into the reaction kettle, and stir well to obtain mixture B;

[0060] (4) The mixture B was heated to 83° C., then 85% potassium persulfate was added and stirred for 10 minutes, and then the mixture A was added dropwise to the reaction kettle at a constant ...

Embodiment 3

[0066] Prepare a low water-absorbing real stone paint emulsion, comprising the following steps in order:

[0067] (1) Weigh the following raw materials in parts by weight for later use: 20 parts of methyl methacrylate, 20 parts of styrene, 20 parts of isooctyl acrylate, 5 parts of methylene succinic acid, 5 parts of cross-linking monomer, emulsified 2 parts of agent, 1 part of sodium persulfate, 100 parts of water;

[0068] (2) At room temperature, fully stir styrene, isooctyl acrylate, cross-linking monomer, and 75% methyl methacrylate in an emulsification tank to obtain mixture A, and set aside;

[0069] (3) Add emulsifier, methylene succinic acid, and 95% water into the reaction kettle, and fully stir evenly to obtain mixture B;

[0070] (4) The mixture B was heated up to 80°C, then 90% sodium persulfate was added and stirred for 10 minutes, then the mixture A was added dropwise to the reaction kettle at a constant speed, and the dropping time was 3.5 hours, and the stirri...

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Abstract

The invention discloses low-water-absorptivity stone-like coating emulsion and a preparation method thereof, and belongs to the technical field of building coatings. The low-water-absorptivity stone-like coating emulsion is prepared from the following raw materials in parts by weight: 20 to 50 parts of methyl methacrylate, 5 to 20 parts of styrene, 20 to 40 parts of ethylhexyl acrylate, 2 to 5 parts of a functional monomer, 2 to 5 parts of a crosslinking monomer, 2 to 4 parts of an emulsifier, 1 to 3 parts of persulfate and 100 parts of water. The functional monomer is itaconic acid; the crosslinking monomer is at least one of glycidyl methacrylate and allyl methacrylate; the emulsifier is at least one of sodium dodecyl benzene sulfonate and ammonium fatty alcohol epoxy ester sulfate. The low-water-absorptivity stone-like coating emulsion disclosed by the invention has the characteristics of low water absorptivity, water white resistance and high hardness.

Description

technical field [0001] The invention relates to the technical field of architectural coatings, in particular to a low water-absorbing real stone paint emulsion and a preparation method thereof. Background technique [0002] Real stone paint is favored by the market because of its excellent stone-like effect, which overcomes the disadvantages of cracking of exterior wall paint and is cheap in cost. [0003] The patent application number 200910192563.4 discloses a pure acrylic emulsion of real stone paint, which is prepared by core-shell emulsion polymerization. Its formula composition: core monomer: 5-20% of methyl methacrylate; 5-20% of isooctyl acrylate; 5-10% of butyl acrylate; 1-5% of high-density cross-linking monomer; Methyl acrylate 5-20%; Isooctyl acrylate 5-10%; Butyl acrylate 5-10%; Acrylic acid 1-3%; Polymerizable emulsifier 1-5%; Persulfate 1-3%; Water 50%. [0004] The patent application number 201510893447.0 discloses a flexible real stone paint for exterior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/08C09D125/14C08F220/14C08F212/08C08F220/18C08F220/32C08F220/40C08F2/26
CPCC09D125/14C09D133/08C09D133/12C08F2/26C08F212/08C08F220/14C08F220/18C08F220/1808C08F220/325C08F220/40
Inventor 龚博文罗云
Owner 成都巴德富科技有限公司
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