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Carboxy styrene-butadiene latex special for coating paper

A technology of carboxylated styrene-butadiene latex and coated paper, which is applied in the field of polymer emulsions for coated paper, can solve the problems of unstable polymerization system, difficulty in meeting the strict requirements of chemical stability of paper coatings, and easy generation of rubber blocks, etc., to achieve Improve system stability, improve polymerization stability and chemical stability, and reduce the effect of usage

Active Publication Date: 2012-06-27
GUANGDONG TENGLONG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this patent is that the polymerization system is unstable, and rubber blocks are easy to be produced during the polymerization process, and the styrene-butadiene latex prepared by carboxylation soap-free emulsion polymerization method is difficult to meet the strict requirements of paper coating on chemical stability

Method used

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  • Carboxy styrene-butadiene latex special for coating paper
  • Carboxy styrene-butadiene latex special for coating paper
  • Carboxy styrene-butadiene latex special for coating paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Latex production

[0051] 1) Feeding process: in a 10L polymerization kettle with stirring, nitrogen inlet and outlet, material inlet and outlet, temperature and pressure measurement port and jacket (the polymerization kettle is first evacuated, then replaced with nitrogen, when the vacuum reaches -0.10MPa) Drop into 60 parts of deionized water respectively, emulsifier solution (10 parts of deionized water, 0.1 part of sodium lauryl sulfate, octylphenol polyoxyethylene ether-10 (the addition number of ethylene oxide is 10) is 0.1 part, 2 parts of non-ionic guar gum), 0.1 part of tetrasodium edetate, 2.2 parts of itaconic acid (scientific name methylene succinic acid or methylene succinic acid), and then start to heat up to 85°C.

[0052] 2) Reaction control and addition: control the temperature at 85±2°C, and continuously add the monomer mixture (55 parts of butadiene, 40 parts of styrene, 2.8 parts of acrylic acid, and 1.2 parts of n-dodecyl mercaptan) into the po...

Embodiment 2

[0060] (1) Latex production

[0061] 1) Feeding process: in a 10L polymerization kettle with stirring, nitrogen inlet and outlet, material inlet and outlet, temperature and pressure measurement port and jacket (the polymerization kettle is first evacuated, then replaced with nitrogen, when the vacuum reaches -0.10MPa) Put into 60 parts of deionized water, emulsifier solution (10 parts of deionized water, 0.2 parts of sodium dodecylbenzenesulfonate, 0.2 parts of octylphenol polyoxyethylene ether-10, butyl fatty alcohol polyoxygen Propylene ether-2 (the addition number of propylene oxide is 2) is 0.1 part, non-ionic guar gum is 1.5 parts), tetrasodium edetate is 0.06 part, itaconic acid is 1.5 parts, and then begins to heat up to 85 ℃.

[0062] 2) Reaction control and addition: control the temperature at 85±2°C, and continuously add the monomer mixture (30 parts of butadiene, 65 parts of styrene, 3.5 parts of acrylic acid, and 0.6 parts of n-dodecyl mercaptan) into the polymeri...

Embodiment 3

[0068] (1) Latex production

[0069]1) Feeding process: in a 10L polymerization kettle with stirring, nitrogen inlet and outlet, material inlet and outlet, temperature and pressure measurement port and jacket (the polymerization kettle is first evacuated, then replaced with nitrogen, when the vacuum reaches -0.10MPa) Drop into 60 parts of deionized water respectively, emulsifier solution (10 parts of deionized water, 0.4 part of sodium dodecyl diphenyl ether disulfonate, nonylphenol polyoxyethylene ether-20 (ethylene oxide addition Number is 20) is 0.2 parts, butyl fatty alcohol polyoxypropylene ether-2 is 0.2 parts, nonionic guar gum is 0.4 parts), edetate tetrasodium 0.02 parts, itaconic acid 1.2 parts, then Begin heating to 85°C.

[0070] 2) Reaction control and addition: Control the temperature at 85±2°C, and continuously add the monomer mixture (42 parts of butadiene, 54 parts of styrene, 2.8 parts of acrylic acid, 0.2 parts of tert-dodecyl mercaptan) into the polymeriza...

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Abstract

The invention discloses polymer emulsion special for coating paper. The polymer emulsion comprises the following raw materials in part by weight: 100 parts of monomer, 0.4 to 2 parts of composite emulsifier, 0.4 to 2 parts of macromolecular protective glue, 0.4 to 2 parts of initiator, 0.2 to 1.2 parts of molecular weight regulator, 0.02 to 0.1 part of chelating agent, 0.2 to 1 part of pH regulator and 100 to 150 parts of deionized water. Butadiene and styrene are used as main monomers and added with an unsaturated carboxylic acid functional monomer, the emulsifier is compounded by adopting an anionic emulsifier and a nonionic emulsifier, and the reaction stability is improved by using the water-soluble macromolecular protective glue; and the polymer emulsion is synthesized by feeding in a continuous dripping mode for high-temperature emulsion polymerization and adopting a reduced pressure flash degassing technology. The prepared carboxy styrene-butadiene latex can be used for bottom and surface coating of various paper products such as coated paper, white board paper and the like, and endows the coated paper with high glossiness, pigment bonding strength, surface water resistance and good printing adaptability.

Description

technical field [0001] The present invention relates to a special polymer emulsion for coated paper, in particular to a special carboxylated styrene-butadiene latex for coated paper and its preparation method. The bottom and surface coating of paper-like products endow coated paper with high pigment bonding strength, wet friction resistance and good printing adaptability. Background technique [0002] With the rapid development of social economy, my country's per capita paper consumption is increasing. According to the statistics of the China Paper Association, from 2000 to 2010, the average annual growth rate of paper and cardboard production was 11.76%, and the average annual growth rate of consumption was 9.88%. , The per capita annual consumption is 68 kg, an increase of 4 kg over the previous year. Among the main products, the consumption of uncoated printing and writing paper was 15.9 million tons, accounting for 17.33% of the total consumption of paper and paperboar...

Claims

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Application Information

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IPC IPC(8): C08F236/10C08F212/08C08F2/30C08F2/26D21H19/58
Inventor 张成明衣振江侯有军
Owner GUANGDONG TENGLONG CHEM TECH
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