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Method for preparing carboxylic styrene butadiene latex for carpet back coating

A carboxylated styrene-butadiene latex, back-coating technology, used in adhesive types, textiles and paper, fiber processing, etc.

Inactive Publication Date: 2008-02-20
溧阳巨神科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, tert-dodecyl mercaptan as a molecular weight regulator has a heavy odor, which affects the production environment and the surrounding living environment of the enterprise, while the alkylphenol polyoxyethylene ether used as a nonionic emulsifier is environmentally friendly due to degradation, etc. problem, has been banned for use in emulsion synthesis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 47 parts of main monomer butadiene, 48 parts of styrene; 3.5 parts of functional monomer, including 2 parts of acrylic acid, 1.5 parts of itaconic acid; 1.5 parts of auxiliary monomer, using methacrylonitrile; 2.4 parts of emulsifier, of which anion The emulsifier is 1.2 parts of sodium alkyl sulfate, 0.6 parts of sodium alkylbenzene sulfonate, 0.6 parts of non-ionic emulsifier fatty alcohol polyoxyethylene ether; 1.5 parts of initiator, using thermal decomposition type potassium persulfate; Dithiol 1 part.

[0020] Under vacuum conditions, put 75 parts of deionized water into the reactor, all electrolytes, chelating agent, pH buffering agent, emulsifier solution (wherein 0.4 part of alkyl sodium sulfate, 0.2 part of alkylbenzene sodium sulfonate, fatty alcohol 0.2 parts of polyoxyethylene ether, 8 parts of deionized water), 0.4 parts of molecular weight regulator n-dodecanethiol, 12 parts of styrene, 2 parts of functional monomers (including 1 part of acrylic acid and ...

Embodiment 2

[0023] 30 parts of main monomer butadiene, 64 parts of styrene; 6 parts of functional monomer, including 3 parts of acrylic acid, 1 part of methacrylic acid, and 2 parts of itaconic acid; 0.6 parts of emulsifier, of which the anionic emulsifier is alkyl sulfuric acid 0.4 part of sodium, 0.2 part of nonionic emulsifier fatty alcohol polyoxyethylene ether; 0.35 part of initiator, using ammonium persulfate; 0.25 part of molecular weight regulator n-dodecanethiol.

[0024] Under vacuum conditions, put 65 parts of deionized water into the reactor, all electrolytes, chelating agent, pH buffering agent, emulsifier solution (wherein 0.2 part of alkyl sodium sulfate, 0.1 part of fatty alcohol polyoxyethylene ether, deionized 5 parts of water), 0.15 parts of molecular weight modifier n-dodecanethiol, 20 parts of styrene, 4 parts of functional monomers (including 1 part of acrylic acid, 1 part of methacrylic acid, and 2 parts of itaconic acid), stir well, and then use N 2 Permutation tw...

Embodiment 3

[0027]35 parts of main monomer butadiene, 42 parts of styrene; 8 parts of functional monomer, including 4 parts of acrylic acid, 1.5 parts of methacrylic acid, and 2.5 parts of itaconic acid; 15 parts of auxiliary monomer, including 8 parts of methyl methacrylate 6 parts, 6 parts of methyl acrylate, 1 part of β-hydroxyethyl acrylate; 1.8 parts of emulsifier, of which the anionic emulsifier is 0.8 parts of alkyl sodium sulfate, 0.4 parts of sodium alkylbenzene sulfonate, nonionic emulsifier fatty alcohol poly 0.6 parts of oxyethylene ether; 1 part of initiator, using ammonium persulfate; 0.6 parts of n-dodecanethiol as a molecular weight regulator.

[0028] Under vacuum conditions, put 80 parts of deionized water, all electrolytes, chelating agent, pH buffering agent, emulsifier solution (wherein 0.4 part of alkyl sodium sulfate, 0.4 part of alkylbenzene sodium sulfonate, fatty alcohol 0.3 parts of polyoxyethylene ether, 10 parts of deionized water), 0.3 parts of molecular weig...

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Abstract

The invention discloses a preparation method of a back lining material used as the back lining of carpets, more particularly relates to a preparation method of the carpets and carboxylic styrene butadiene latex. Butadiene and cinnamene are taken as main monomers, then functional monomers and auxiliary monomers are added, anion emulsifier and non-ionic emulsifier are used complexly, pyrolysis type persulfates of potassium peroxydisulfate water solution or ammonium persulfate water solution, etc. are used as activator, n-dodecylmercaptan is used as molecular weight regulator, a batch feeding or dropwise feeding way is adopted, and vacuum flashing desaeration is used for composing the environment protection carboxylic styrene butadiene latex used as the backing lining of carpets. The carboxylic styrene butadiene latex prepared by the method has good elasticity and enduring performance, high adhesion strength and low volatility harmful substances after being used in woven carpets and tufted carpets, thereby being a green environment protection product upon meeting the requirements of environment protection.

Description

technical field [0001] The invention relates to a preparation method of a backing material for carpet back coating, in particular to a preparation method of carboxylated styrene-butadiene latex. Background technique [0002] The backing of woven and tufted carpets needs to be coated with adhesive to fix the pile, stabilize the size, and make the carpet have good layability, durability and moisture resistance. In the carpet manufacturing process, the adhesives used include styrene-butadiene latex, carboxylated styrene-butadiene latex, all-acrylic emulsion, ethylene-propylene emulsion, nitrile latex, polyvinyl acetate emulsion and natural latex, of which the largest amount is carboxylated styrene-butadiene latex and all-acrylic latex. Due to the high price of all-acrylic emulsion, carboxylated styrene-butadiene latex endows the carpet with its excellent bonding strength, elasticity and hydrophobicity, which is durable, dimensionally stable, stiff and elastic, thick and comfor...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F2/22C08F2/38C09J125/08D06M15/233C08F236/06C08F220/10
Inventor 蒋志平杨浩平叶剑豪林国胜缪利锋
Owner 溧阳巨神科技材料有限公司
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