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Hyperbranched polyethyleneimine doped and modified acrylic emulsion and preparation method thereof

A technology of polyethyleneimine and acrylic emulsion, which is applied in the direction of coating, etc., and can solve the problems of high crosslinking density, poor scratch resistance, and large loss of coating resistance

Active Publication Date: 2020-10-23
WANHUA CHEM GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the base material of melamine board has high cross-linking density and strong compactness, and it is difficult for ordinary acrylic resin to have adhesion on it. It has good adhesion on the material, but it is difficult to achieve this effect with traditional acrylic emulsion
Deng Maohong et al. (CN107573739A) introduced a large amount of functional monomeric acid and silane coupling agent to prepare the acrylic emulsion to have a certain adhesion on the melamine board substrate, but the introduction of a large amount of hydrophilic monomers caused a large loss of coating resistance, and Poor scratch resistance

Method used

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  • Hyperbranched polyethyleneimine doped and modified acrylic emulsion and preparation method thereof
  • Hyperbranched polyethyleneimine doped and modified acrylic emulsion and preparation method thereof
  • Hyperbranched polyethyleneimine doped and modified acrylic emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Example 1 Preparation of Hyperbranched Polyethyleneimine Doped Modified Acrylic Emulsion 1 (hereinafter referred to as "Acrylic Emulsion 1")

[0040] The preparation of hyperbranched polyethyleneimine doped modified acrylic acid emulsion 1 in the present embodiment comprises the following steps:

[0041] Step 1): Preparation of Acrylic Emulsion:

[0042] 1.1) Dissolve 90% SDS (1.8g) of the total weight of SDS in 30g water, then add 53gMMA (methyl methacrylate), 30g BA (butyl acrylate), 5gDAAM (diacetone acrylamide) and 5g MAA in sequence (Methacrylic acid), stirred in an emulsification tank to form a pre-emulsion.

[0043] 1.2) Dissolve the remaining SDS (sodium dodecyl sulfate, 0.2 g) with 66 g of deionized water and add it to the reactor, blow nitrogen into the reactor to exhaust the air in the reactor, and keep the reaction temperature at 85°C.

[0044] From step 1.1), the pre-emulsion that takes out 4% (accounting for the total mass of pre-emulsion) drops into th...

Embodiment 2-8

[0049] Example 2-8 Preparation of hyperbranched polyethyleneimine doped modified acrylic emulsion 2-8 (hereinafter referred to as "acrylic emulsion 2-8")

[0050] The preparation of acrylic emulsion 2-8 adopts the method similar to that of acrylic emulsion 1, the only difference is that the amount of each raw material is as shown in Table 2-1.

Embodiment 9

[0062] Example 9 Preparation of water-based wooden door paint

[0063] The acrylic emulsion prepared in Example 1 was prepared according to the water-based wooden door paint coating formulation table as shown in Table 3, and the water-based wooden door paint coating 1 was prepared according to the following method.

[0064] Table 3 Waterborne Wooden Door Paint Coating Formulation Table

[0065]

[0066] Note: raw materials that do not indicate the manufacturer can be used as long as they are of the same type, and Vesmody is a brand name

[0067] According to the formula in Table 3, 80g of the acrylic emulsion prepared in Example 1 and 14.35g of water were sequentially added to the dispersion tank, and stirred at 500r / min for 10min. Then add 0.05g AMP-95, 0.2g BYK-024, 1.0g BYK-420, 2.0g dipropylene glycol methyl ether, 2.0g dipropylene glycol butyl ether and 0.4g U604 in sequence, increase the speed to 800r / min, and stir for 20min. Get water-based wooden door paint.

...

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Abstract

The invention provides a hyperbranched polyethyleneimine doped and modified acrylic emulsion and a preparation method thereof. The emulsion provided by the invention is particularly suitable for preparing a waterborne wood paint coating, and good paint film performance can be obtained. Hyperbranched polyethyleneimine is added into an acrylic emulsion which is neutralized to be weakly alkaline, anduniform mixing is carried out to obtain the hyperbranched polyethyleneimine doped and modified acrylic emulsion, wherein the acrylic emulsion is prepared by a polymerization reaction of components including an acrylate monomer, a functional monomer acid, a post-crosslinking monomers and an emulsifier; and the post-crosslinking monomer at least comprises at least one of diacetone acrylamide and ethylene glycol dimethacrylate.

Description

technical field [0001] The invention belongs to the field of water-based wood lacquer coatings, and in particular relates to an acrylic emulsion doped and modified by hyperbranched polyethyleneimine and a preparation method and application thereof. Background technique [0002] Wooden door paint, as the name suggests, refers to the paint on the surface of wooden doors. With the development of science and technology and the improvement of people's living standards, wooden door coatings have also developed several popular trends, including traditional oily wooden door paints and emerging water-based paints. Because water-based paint uses water as a solvent, does not contain organic solvents, has no irritating odor, and the paint film is not easy to turn yellow or age, it is more and more valued by the industry. However, compared with oil-based paint, water-based paint has a gap in plumpness and appearance, and poor scratch resistance. At the same time, the use of water-based ...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F220/58C08F220/28C08F220/06C09D133/12C09D179/02C09D7/65
CPCC08F220/14C09D133/24C09D7/65C08L2205/05C08L79/02C08F220/1804C08F220/1808C08F220/58C08F220/283C08F220/06
Inventor 方武成杨瑶瑶马吉全纪学顺邓俊英
Owner WANHUA CHEM GRP CO LTD
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