Modified vinyl acetate-acrylic emulsion adhesive with antibacterial function and preparation method thereof

A vinyl acetate-acrylate emulsion and adhesive technology, applied in the directions of monocarboxylic acid ester copolymer adhesive, adhesive type, resistance to vector-borne diseases, etc. Conducive to long-term storage, improved hydrolysis resistance, and improved performance

Active Publication Date: 2021-04-30
浙江优力新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the wide application of polyvinyl acetate emulsion in high-end furniture, automobile interior decoration, automobile tarpaulin and other industries, people have higher requirements for its heat resistance, non-toxic and environmental protection performance, and the current modification method is still not very effective. ideal

Method used

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  • Modified vinyl acetate-acrylic emulsion adhesive with antibacterial function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of antibacterial monomer: at room temperature, react 10g of α-methyl-D-mannoside with 1.9g of isocyanoethyl methacrylate, take 50mL of dichloromethane as the reaction solvent, and react for 72h to obtain antibacterial monomer.

[0023] (2) Preparation of modified sorbitol: Dissolve 10g of sorbitol in 50mL of tetrahydrofuran or cyclohexane solution, then gradually add 1.2g of isocyanomethacrylate, stir and heat the reaction mixture, and react at 90°C for 24h The reaction mixture was stirred and heated.

[0024] (3) Preparation of modified vinegar-acrylic emulsion adhesive with antibacterial function: add 50mL deionized water and 5g polyvinyl alcohol to a four-necked flask with heating, electric stirring, condensation and nitrogen conduit, and heat to 70°C Continue to stir for 1 hour, then cool to 40°C, then add 0.1g of buffer solution, the buffer solution is an aqueous solution of sodium acetate and ferrous sulfate with a weight ratio of 1:2, then add 10...

Embodiment 2

[0026] 1) Preparation of antibacterial monomer: at room temperature, 15g of 4-isothiohydrophenyl-A-D-mannoside was reacted with 2.85g of isocyanoethyl methacrylate, and 100mL of dichloromethane was used as the reaction Solvent, reaction 72 to obtain antibacterial monomer h.

[0027] 2) Preparation of modified sorbitol: Dissolve 20g of sorbitol in 100mL of tetrahydrofuran or cyclohexane solution, then gradually add 2.4g of isocyanomethacrylate, stir and heat the reaction mixture, react at 90°C for 24h and stir and heat the reaction mixture.

[0028] 3) Preparation of modified vinegar-acrylic emulsion adhesive with antibacterial function: Add 100mL deionized water and 10g polyvinyl alcohol into a four-necked flask equipped with heating, electric stirring, condensation and nitrogen conduit, and heat it to 70°C Continue to stir for 2 hours, then cool to 50°C, then add 0.5g of buffer solution, the buffer solution is an aqueous solution of sodium acetate and ferrous sulfate with a ...

Embodiment 3

[0030] 1) Preparation of antibacterial monomer: at room temperature, 20g of 4-methylumbelliferyl α-D-mannopyranoside was reacted with 3.8g of isocyanoethyl methacrylate, and 150mL of dichloromethane was used as Reaction solvent, react for 72h to obtain antibacterial monomer.

[0031] 2) Preparation of modified sorbitol: Dissolve 30g of sorbitol in 150mL of tetrahydrofuran or cyclohexane solution, then gradually add 3.6g of isocyanomethacrylate, stir and heat the reaction mixture, react at 90°C for 24h and stir and heat the reaction mixture.

[0032]3) Preparation of modified vinegar-acrylic emulsion adhesive with antibacterial function: add 150mL deionized water and 15g polyvinyl alcohol to a four-necked flask equipped with heating, electric stirring, condensation and nitrogen conduit, and heat to 70 °C Continue to stir for 4 hours, then cool to 40°C, then add 0.3g of buffer solution, the buffer solution is an aqueous solution of sodium acetate and ferrous sulfate with a weig...

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Abstract

The present invention discloses a modified vinyl acetate-acrylic emulsion adhesive with an antibacterial function and a preparation method thereof. The preparation method comprises the following steps: adding deionized water and polyvinyl alcohol into a four-neck flask with heating, electric stirring, condensation and a nitrogen guide pipe, heating, continuously stirring for 1-4h, cooling to 40-60 DEG C, adding a buffer solution, adding vinyl acetate, butyl acrylate, an antibacterial monomer, modified sorbitol and vinyl versatate, stirring, heating, dropwise adding an initiator-containing aqueous solution, and continuously reacting to obtain the modified vinyl acetate-acrylic emulsion adhesive with the antibacterial function. The adhesive prepared by the invention has water resistance and heat resistance, and the water resistance of the copolymer is improved; and mannoside modified by isocyano ethyl methacrylate is introduced as an antibacterial functional monomer, so that the antibacterial adhesion effect of the vinyl acetate-acrylic emulsion adhesive is effectively improved.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a modified vinegar-acrylic emulsion adhesive with antibacterial function and a preparation method thereof. Background technique [0002] With the improvement of people's awareness of health and environmental protection, people are more advocating the production of green products, including adhesives. According to statistics, the current wood adhesive industry mainly uses petrochemically derived resins for production, such as melamine urea formaldehyde (MUF), phenol formaldehyde (PF) and urea formaldehyde (UF), which are all harmful materials to us. Therefore, it is reasonable and promising to develop environmentally friendly materials as substitutes for wood adhesives. [0003] Polyvinyl acetate emulsion is a water-based environmentally friendly adhesive, commonly known as "white latex", with low cost, relatively simple polymerization process, odorless, tasteless, non-toxic, c...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F220/18C08F220/36C08F218/00C09J131/04
CPCC08F218/08C09J131/04C08F220/1804C08F220/36C08F218/24Y02A50/30
Inventor 王经伟王镇南叶如兰
Owner 浙江优力新材料有限公司
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