Water-soluble acrylic stabilizer and preparation method thereof

Abstract

The invention relates to the field of stabilizers and discloses a water-soluble acrylic stabilizer, which is prepared from the following components in parts by weight: 10 to 30 parts of an acrylic monomer, 2 to 8 parts of itaconic acid, 30 to 40 parts of acrylamide, 15 to 20 parts of aneutralizer, 0.05 to 0.1 part of a molecular weight regulator, 0.5 to 1.0 part of an initiator and 120 to 140 parts of water. The preparation method of the stabilizer comprises the following steps: stirring the water, the acrylic monomer and the itaconic acid, and adding the neutralizer, wherein the temperature is not more than 40 DEG C and the pH value is 4.5-5.5; adding the acrylamide and carrying out stirring; adding the molecular weight regulator and water and stirring to obtain a mixed solution; taking out 20% of the mixed solution, carrying out heating to 60-70 DEG C, adding the initiator, and slowly dropwise adding the rest 80% of the mixed solution, the temperature being 65-70 DEG C, and the dropping time being 1-1.5 hours; and keeping the temperature for 30-40 minutes after polymerization to obtain the water-soluble stabilizer. The stabilizer prepared by the invention is used for preparing athickener, can improve emulsion polymerization and distillation concentration, is good in storage stability and use stability, and can also reduce the use amount of a thickener continuous phase solvent and reduce the distillation burden at the same time.

Description

technical field [0001] The invention relates to the technical field of thickening stabilizers, in particular to a water-soluble acrylic stabilizer and a preparation method thereof. Background technique [0002] In the past ten years, because the synthetic thickener has the advantages of high color yield, good rheology, convenient pulping and fast paste speed, domestic scientific researchers have carried out in-depth research on it, and many synthetic thickeners have appeared on the market. Thickener products, and in the preparation of acrylate thickeners by inverse emulsion polymerization, with the market's requirements for product transportation, usage, environmental protection, etc., prompting the development of the entire acrylate thickener technology However, the existing stabilizers still cannot meet the polymerization effect and storage stability of the emulsion after being added to the thickener. Therefore, it is not only necessary to control the molecular weight and ...

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Problems solved by technology

[0002] In the past ten years, due to the advantages of high color yield, good rheology, convenient pulping and fast pasting speed of synthetic thickeners, domestic scientific researchers have conducted in-depth research on them, and many synthetic thickeners have appeared on the market. Thickener products, and in the preparation of acrylate thickeners by inverse emulsion polymerization, with the market's requirements for product transportation, usage, environmental protection, etc., prompting the development of the entire acrylate thickener technology The innovation of existing stabilizers still cannot meet the polymerization effect and storage stability of the emulsion after being added to the thickener. Therefore, it is not only necessary to control the molecular weight and molecular structure of the polymer, but also to pay attention to the feasibility of the entire production process

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