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Water-soluble gluing film

A water-soluble, glue-coating technology, applied in adhesives, heat-activated films/sheets, film/sheet-shaped adhesives, etc., can solve problems such as poor water resistance, achieve excellent antibacterial properties, improve water resistance and viscosity, and broaden The effect of market prospects

Active Publication Date: 2020-08-04
常州绿之源高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a modified polyvinyl alcohol and hot melt adhesive for the defects of poor water resistance of the existing polyvinyl alcohol hot melt adhesive, which uses polyvinyl alcohol, 4-bromomethylphenylboronic acid, polyhexaethylene Methylguanidine is used as a raw material to modify polyvinyl alcohol through condensation reaction and coupling reaction, and prepare it into hot melt adhesive, which has excellent antibacterial properties while solving the existing use problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation steps of modified polyvinyl alcohol are as follows:

[0032] (1) Add 10g of polyvinyl alcohol 1799 to a mixed solvent of deionized water and DMF at a volume ratio of 2:1, adjust its concentration to 8wt%, stir at 90°C until dissolved; after adjusting the pH to 5, add 5wt% 4-Bromomethylphenylboronic acid was stirred and reacted at 50°C for 6h, distilled under reduced pressure, and dried to obtain intermediate product I;

[0033] Described 4-bromomethylphenylboronic acid consumption is the percentage of polyvinyl alcohol quality;

[0034] Its infrared data is as follows: IR: 3560cm -1 : -OH weakened; 3030cm -1 、1503cm -1 、850cm -1 、732cm -1 : benzene ring exists; 647cm -1 :-C-Br exists.

[0035] (2) Dissolve I in DMF, add 23.3 mmol of polyhexamethyleneguanidine, stir at 80° C. for 2 h, and remove the solvent under reduced pressure to obtain the target product II.

[0036] Its infrared data is as follows: IR: 3560cm -1 : -OH exists; 3030cm -1 、150...

specific Embodiment 2-4

[0041] Specific embodiment 2-4, other are with specific embodiment 1, difference is following table:

[0042]

[0043]

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Abstract

The invention belongs to the field of polymer materials. The invention relates to a water-soluble gluing film, which comprises a PVA film and a PVA-based hot melt adhesive layer coated on one surfaceof the PVA film, and a preparation method of the water-soluble gluing film comprises the following steps: taking polyvinyl alcohol, 4-bromomethylphenylboronic acid and polyhexamethylene guanidine as raw materials, performing a condensation reaction and a coupling reaction to modify polyvinyl alcohol, and preparing a hot melt adhesive from the modified polyvinyl alcohol. The novel material effectively improves the problem of poor water resistance of the existing polyvinyl alcohol hot melt adhesive, and has efficient antibacterial property. In addition, the material is wide in source, green, environment-friendly and biodegradable. The material has broad market prospects in the fields of adhesives, coatings, film processing and the like.

Description

technical field [0001] The invention relates to a water-soluble glue coating film. The invention belongs to the field of polymer materials. Background technique [0002] Marble, also known as marble, is a recrystallized limestone whose main component is CaCO 3 . The main components are calcium and dolomite, with many colors, usually with obvious patterns, and many mineral particles. The Mohs hardness is between 2.5 and 5. Because marble generally contains impurities, and calcium carbonate is easily weathered and eroded by the action of carbon dioxide, carbide, and water vapor in the atmosphere, and the surface quickly loses its luster. Therefore, it is of practical significance to coat a layer of film on the surface of marble to avoid corrosion in a short period of time. [0003] Polyvinyl alcohol (PVA) is a water-soluble polymer with a wide range of uses, and is widely used in the production of coatings, adhesives, textiles, and plastic films. As a rapidly developing ...

Claims

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Application Information

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IPC IPC(8): C09J7/24C09J7/35C09J129/00C09J11/06C09J11/08C08F8/32C08F8/42C08F16/06
CPCC08F8/32C08F8/42C09J11/06C09J11/08C09J129/00C09J2429/00C09J2429/006C09J7/245C09J7/35C08L3/02C08K5/521C08F16/06
Inventor 褚鹏飞
Owner 常州绿之源高分子材料有限公司
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