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Adhesive

A technology of adhesive and copolymerization catalyst, applied in the direction of adhesive type, monocarboxylate copolymer adhesive, etc., can solve the problems of low output of natural latex and production limitation of regenerated leather, so as to reduce production cost and stabilize production. The effect of good performance and good tensile strength

Inactive Publication Date: 2012-09-19
张思东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low output of natural latex, the production of recycled leather is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Dilute 0.1 kg of the copolymerization catalyst with 10 times of water for use; add water, 0.5 kg of sodium dodecylbenzenesulfonate, and 26 kg of vinyl acetate into a reactor equipped with a stirrer, condenser, thermometer and dropping funnel , 1 / 3 amount of 1 kg of methyl acrylate, 3 kg of butyl acrylate, 6 kg of ethyl acrylate mixed monomer, 1 / 2 amount of the prepared copolymerization catalyst solution, start the stirrer, and put the above mixture in Fully emulsify in the container for 30 minutes; raise the temperature of the reactor to 75°C and keep it warm for 30 minutes; drop the remaining amount of copolymerization catalyst solution and acrylic acid mixed monomer into the reactor from the dropping funnel, and the temperature should be controlled at 75°C during the dropping process ℃; after dripping, continue to insulate and stir for 1 hour at a temperature of 75 ℃ to fully react the remaining monomers; cool the reactant below 60 ℃, add 0.1 kg of sodium bicarbonate, ...

Embodiment 2

[0018] Dilute 0.2 kg of the copolymerization catalyst with 10 times of water for use; add water, 1 kg of sodium dodecylbenzenesulfonate, and 30 kg of vinyl acetate into a reactor equipped with a stirrer, condenser, thermometer and dropping funnel , 1 / 3 amount of 3 kg of methyl acrylate, 4 kg of butyl acrylate, 6 kg of ethyl acrylate mixed monomer, 1 / 2 amount of prepared copolymerization catalyst solution, start the stirrer, and put the above mixture in the container Fully emulsify within 32 minutes; raise the temperature of the reactor to 78°C and keep it warm for 32 minutes; drop the remaining amount of co-polymerization catalyst solution and acrylic acid mixed monomer into the reactor from the dropping funnel, and the temperature should be controlled at 80°C during the dropping process After dropping, continue to insulate and stir for 1.5 hours at a temperature of 80°C to fully react the remaining monomers; cool the reactants below 60°C, add 0.15 kg of sodium bicarbonate, and...

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PUM

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Abstract

The invention discloses an adhesive, which is prepared from the following components in percentage by weight: 1%-5% of methyl acrylate, 2%-6% of butyl acrylate, 5%-10% of ethyl acrylate, 26%-36% of vinyl acetate, 0.1%-0.3% of copolymerization catalyst, 0.1%-0.2% of sodium bicarbonate, 0.5%-2% of sodium dodecyl benzene sulfonate and 50%-65% of water. The adhesive disclosed by the invention is prepared by the emulsion copolymerization of various acrylic monomers and vinyl acetate monomers, has good adhesivity and stability, can replace natural emulsion to be used as the adhesive for sole regenerated leather, and can enable the regenerated leather to have good tensile strength and bending strength.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to an adhesive. Background technique [0002] In recent years, with the widespread use of regenerated leather, the usage of regenerated leather adhesives has also increased. At present, the adhesive of recycled leather is mainly natural latex. Natural latex not only has good adhesion, but also makes recycled leather have good tensile strength and folding strength. But because the output of natural latex is seldom, the production of regenerated leather is restricted. Contents of the invention [0003] Purpose of the invention: the purpose of the invention is to provide a regenerated leather adhesive with good adhesion for solving the deficiencies in the prior art. [0004] The technical solution adopted in the present invention: a viscose, prepared from methyl acrylate, butyl acrylate, ethyl acrylate, vinyl acetate, copolymerization catalyst, sodium bicarbonate, sodium d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C08F218/08C08F220/14C08F220/18
Inventor 张思东
Owner 张思东