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Composite latex for paints, water paint and preparation method of water paint

A coating and emulsion technology, applied in the field of composite emulsion for coating and water-based coating and preparation, can solve the problems of less addition, easy powdering and falling off, little influence on coating film performance, etc., and achieves enhanced stability, uniform distribution and hardness. improved effect

Inactive Publication Date: 2009-10-28
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to modify the water-based coating, some inorganic fillers are usually added in the later stage. The addition amount is small and has little effect on the coating film performance. When the addition amount is large, although the corresponding hardness can be obtained, it is easy to pulverize fall off, so this method can solve part of the problem in some cases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Emulsion preparation

[0045] Follow the steps below to produce water-based interior and exterior paint emulsion:

[0046] 1. Prepare materials according to the following weight ratio:

[0047] Methyl acrylate (MA) 20

[0048] Methyl methacrylate (MMA) 20

[0049] Diacetone Acrylamide (DAAM) 1

[0050] Butyl Acrylate (BA) 15

[0051] Alkylphenol polyoxyethylene ether ammonium sulfate (R-436) 1.0

[0052] Sodium dodecyl sulfate (SDS) 1.0

[0053] Nano oxide paste 4

[0054] Sodium bicarbonate (SBC) 0.3

[0055] Ammonium persulfate (initiator) 0.4

[0056] Deionized water (H 2 O) 80

[0057] Triethanolamine (pH regulator) 1

[0058] BYK-028 (defoamer) 0.3

[0059] Wherein the nano oxide slurry is prepared according to the following steps:

[0060] 1) prepare materials according to the following proportions by weight:

[0061] Nano-TiO 2 : 20; Surfactant: 1.5; Water: 60.

[0062] 2) Prepare nano-oxide slurry by mechanical grinding, add nano-oxide, water, ...

Embodiment 2

[0092] (1) Emulsion preparation

[0093] Follow the steps below to produce water-based interior and exterior wall emulsion:

[0094] 1. Prepare materials according to the following weight ratio:

[0095] Methyl acrylate (MA) 25

[0096] Methyl methacrylate (MMA) 18

[0097] Diacetone acrylamide (DAAM) 2

[0098] Butyl Acrylate (BA) 55

[0099] Alkylphenol polyoxyethylene ether ammonium sulfate (R-436) 1.2

[0100] Sodium dodecyl sulfate (SDS) 1.5

[0101] Nano oxide paste 5

[0102] Sodium bicarbonate (SBC) 0.6

[0103] Potassium persulfate (initiator) 0.7

[0104] Deionized water (H 2 O) 95

[0105] 2-amino-2-methyl-1-propanol (pH regulator) 2.5

[0106] BYK-028 (defoamer) 0.3

[0107] Wherein the nano oxide slurry is prepared according to the following steps:

[0108] 1) prepare materials according to the following proportions by weight:

[0109] Nano-Al 2 o 3 : 30; surfactant: 1.8; water: 70.

[0110] 2) Prepare nano-oxide slurry by mechanical grinding, add...

Embodiment 3

[0140] (1) Emulsion preparation

[0141] Follow the steps below to produce water-based interior and exterior paint emulsion:

[0142] 1. Prepare materials according to the following weight ratio:

[0143] Methyl acrylate (MA) 40

[0144] Methyl methacrylate (MMA) 20

[0145] Diacetone Acrylamide (DAAM) 5

[0146] Butyl Acrylate (BA) 35

[0147] Alkylphenol polyoxyethylene ether ammonium sulfate (R-436) 1.8

[0148] Sodium dodecyl sulfate (SDS) 1.5

[0149] Nano oxide paste 5

[0150] Sodium bicarbonate (SBC) 0.4

[0151] Potassium persulfate (initiator) 0.6

[0152] Deionized water (H 2 O) 100

[0153] Ammonia (pH regulator) 2.0

[0154] BYK-028 (defoamer) 0.6

[0155] Wherein the nano oxide slurry is prepared according to the following steps:

[0156] 1) prepare materials according to the following proportions by weight:

[0157] Nano ZnO: 35; Surfactant: 1.8; Water: 80.

[0158] 2) Prepare nano-oxide slurry by mechanical grinding, add nano-oxide, water, and su...

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Abstract

The invention relates to a composite nanometer oxide latex for paints, a water paint containing the latex and a preparation method of the water paint. The latex consists of a monomer mixture, an emulsifier, a film-forming additive, an initiator, sodium bicarbonate, a pH regulator, an antifoamer, deionized water and nanometer oxide slurry, wherein the nanometer oxide slurry is prepared by firstly dispersing a nanometer oxide, a surfactant and water in a dispersion machine and then sand grinding dispersion in sand grinder; the nanometer oxide is one or two or three of Al2O3, ZnO and TiO2; and the monomer mixture consists of methyl acrylate, methyl methacrylate, diacetone-acryloamide and butyl acrylate. In the synthesis process of the latex of the invention, the nanometer oxide slurry is added, so that nanometer particles can be uniformly and stably combined with synthesized macromolecules to show the functionality of a nanometer material and to realize the excellent hardness, wear resistance and soiling resistance of the water paint containing the composite nanometer oxide latex for paints.

Description

technical field [0001] The invention relates to a composite emulsion for paint, water-based paint and a preparation method. Background technique [0002] There are many types of water-based paints on the market, but these water-based paints often have inherent defects, such as soft coating film, non-wear resistance, and easy contamination of the surface. The conventional preparation method of emulsions for common paints is: using one or more of acrylic monomers and other monomers, adding emulsifiers and initiators in an aqueous environment to prepare organic emulsions. [0003] In the prior art, in order to modify the water-based coating, some inorganic fillers are usually added in the later stage. The addition amount is small and has little effect on the coating film performance. When the addition amount is large, although the corresponding hardness can be obtained, it is easy to pulverize fall off, so this method can solve part of the problem in some cases. Adding nano-o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/02C09D133/12C08F220/14C08F2/30C08F4/30C08F2/38
Inventor 郝国防
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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