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A method for preparing carboxylated styrene-butadiene latex for artificial turf back coating by soap-free polymerization

A carboxylated styrene-butadiene latex and artificial turf technology, applied in the direction of hydrocarbon copolymer adhesives, adhesives, adhesive types, etc., can solve the problems of low bond strength, poor water resistance, pollution of the environment, etc., and achieve bond strength High, good water resistance, good elasticity and stiffness

Inactive Publication Date: 2016-08-24
QUANZHOU DELI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing carboxylated styrene-butadiene latex for artificial turf back coating by soap-free polymerization, so as to overcome the shortcomings of existing artificial turf back coating glues such as polluted environment, poor water resistance, and low bonding strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Formula: 47 parts of butadiene, 50 parts of styrene; 3 parts of ethylene glycol monoester maleate; 0.8 parts of ammonium persulfate; 0.5 parts of tertiary dodecyl mercaptan; 0.9 parts of synthetic seed emulsion; deionized water 120 servings.

[0025] Process: under vacuum conditions, put 72 parts of deionized water into the reactor, the synthetic seed emulsion of the whole amount, ethylene glycol monoester maleate, chelating agent, 0.05 part of tertiary dodecyl mercaptan, styrene 2.35 parts, stir evenly, adjust the pH value to 8 with pH buffering agent, replace with N2 for 2 times, press in 2.5 parts of butadiene with N2, add initiator solution (where deionized water 1.1 part, ammonium persulfate 0.08 part). Then the temperature was raised to 90°C, and then the remaining butadiene, styrene, initiator solution, molecular weight regulator, chelating agent, electrolyte and deionized water were kept within the temperature range of 90-92°C; the addition was completed in 2.3...

Embodiment 2

[0028] Formula: 46 parts of butadiene, 52 parts of styrene; 2 parts of ethylene glycol monoester maleate; 1 part of ammonium persulfate; 0.6 parts of tertiary dodecyl mercaptan; 0.9 parts of synthetic seed emulsion; deionized water 110 copies.

[0029] Process: under vacuum conditions, put 66 parts of deionized water into the reactor, the synthetic seed emulsion of the whole amount, ethylene glycol monoester maleate, chelating agent, 0.06 part of tertiary dodecyl mercaptan, styrene 2.6 parts, stir evenly, adjust the pH value to 8 with pH buffering agent, replace 2 times with N2, press in 2.3 parts of butadiene with N2, add initiator solution (where deionized water 1.3 parts, thermal decomposition type ammonium persulfate 0.1 part). Then the temperature was raised to 90°C, and then the remaining butadiene, styrene, initiator solution, molecular weight modifier, chelating agent, electrolyte and deionized water were kept within the temperature range of 90-92°C; the addition was ...

Embodiment 3

[0032] Formula: 40 parts of butadiene, 57 parts of styrene; 3 parts of ethylene glycol monoester maleate; 0.9 parts of potassium persulfate; 0.5 parts of tertiary dodecyl mercaptan; 0.9 parts of synthetic seed emulsion; deionized water 110 copies.

[0033] Process: under vacuum conditions, put 66 parts of deionized water into the reactor, the synthetic seed emulsion of the whole amount, ethylene glycol monoester maleate, chelating agent, 0.05 part of tertiary dodecyl mercaptan, styrene 2..85 parts, stir evenly, adjust the pH value to 8 with pH buffering agent, replace with N2 for 2 times, press in 2.0 parts of butadiene with N2, and add initiator solution when the temperature rises to 65-75°C (wherein 1.2 parts of ionized water, 0.09 parts of pyrolytic potassium persulfate). Then the temperature was raised to 90°C, and then the remaining butadiene, styrene, initiator solution, molecular weight modifier, chelating agent, electrolyte and deionized water were kept within the tem...

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Abstract

The invention relates to a method for preparing carboxyl styrene-butadiene latex for artificial turf back coating through soap-free polymerization, and in particular relates to a method for preparing carboxyl styrene-butadiene latex through soap-free polymerization, belonging to the technical field of production of carboxyl styrene-butadiene latex. The specific technical scheme is as follows: the method comprises the following steps of: adding butadiene and styrene which are used as main monomers into maleic acid glycol ester (including monoester, diester and polyester); and intermittently charging and dropwise adding thermolysis persulfate such as an ammonium persulfate aqueous solution which is used as an initiator and tert-dodecyl mercaptan which is used as a molecular weight regulator in batches, and synthesizing environment-friendly carboxyl styrene-butadiene latex for artificial turf back coating by adopting vacuum flashing deaeration. After the carboxyl styrene-butadiene latex prepared by the method is used on an artificial turf, the artificial turf is good in elasticity and stiffness, high in bonding strength and good in water resistance and meets an environmental protection requirement, so that the carboxyl styrene-butadiene latex is a green and environment-friendly product.

Description

technical field [0001] The invention relates to a soap-free polymerization method for preparing carboxylated styrene-butadiene latex for artificial turf back coating, in particular to a soap-free polymerization method for preparing carboxylated styrene-butadiene latex, belonging to the technical field of styrene-butadiene latex production. Background technique [0002] The backing of artificial turf needs to be coated with adhesive to fix the grass fibers, stabilize the size, and make the artificial turf have good laying properties, water resistance and tear resistance of the base fabric. In the manufacturing process of artificial turf, the back coating glue used in the past is mainly solvent-based, which seriously pollutes the environment. Therefore, water-based synthetic latex has received attention. The synthetic latex used includes styrene-butadiene latex and carboxylated styrene-butadiene latex. , All-acrylic emulsion, nitrile latex, vinegar-acrylic latex and all-acryli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F236/10C08F236/06C09J125/10C09J147/00
Inventor 李祎山陈登龙杨思伟黄秀萍
Owner QUANZHOU DELI CHEM
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