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Macromolecular coupling agent, preparation method and application thereof

A technology of macromolecular coupling agent and number average molecular weight, which is applied in the direction of coating, etc., can solve the problems of hindering application, poor water resistance, and poor adhesion of plastic film, so as to improve water resistance, interface compatibility, and interface The effect of adhesion

Inactive Publication Date: 2013-08-21
HEFEI ANMOFEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor adhesion of PVA to plastic films and poor water resistance, its application is hindered.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Place the four-neck flask equipped with a stirrer, thermometer, reflux condenser and constant pressure dropping funnel in a constant temperature water bath. First, add 1 mol polyethyleneimine (number average molecular weight 1000) and solvent ethanol into a four-necked flask, and heat up to 60°C; add 4 mol 3-(2,3-glycidyloxy)propyl trimethyl Mixture of oxysilane, 12mol tetraethyl silicate and solvent ethanol, react for 3-8 hours, cool down to room temperature, add 16mol H 2 O, stir well and age for 24-72 hours. The number average molecular weight of the obtained PEOS is 3000-3500.

Embodiment 2

[0031] The preparation method is the same as in Example 1, except that ammonia water is added to the system before aging to adjust the pH to 9, and the aging time is shortened to 12 hours.

Embodiment 3

[0033] The preparation method is the same as in Example 1, except that hydrochloric acid is added to the system before aging to adjust the pH to 3, and the aging time is shortened to 8 hours.

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PUM

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Abstract

The invention discloses a macromolecular coupling agent, a preparation method and application thereof. The macromolecular coupling agent is obtained by graft polymerization reaction of polyethyleneimine, KH-560 and silicate ester and hydrolysis; the molecular weight of the polyethyleneimine is 1,000 to 100,000; the molar ratio of the polyethyleneimine to the kH-560 to the silicate ester is 1: (4-6): (12-18); the silicate ester is orthosilicate or polysilicate, wherein the orthosilicate is selected from tetramethyl silicate, tetraethyl silicate, tetrapropyl silicate or tetrabutyl silicate; andthe polysilicate is a product obtained by hydrolysis and condensation polymerization of the orthosilicate. When polyvinyl alcohol (PVA) glue is coated on the surface of plastic to prepare a compositefilm, the macromolecular coupling agent is used as a coupling agent, so that the adhesive force of the PVA glue on the surface of the plastic after the film is formed can be greatly improved.

Description

1. Technical field [0001] The present invention designs a functional macromolecular chemical and its preparation method. Specifically, it is a macromolecular coupling agent prepared from polyethyleneimine, silane coupling agent, and silicate, which has dual functions of promoting adhesion and crosslinking. and its preparation method. 2. Background technology [0002] It is well known that polyvinyl alcohol (PVA) is a biodegradable polymer product with good film-forming properties, antistatic properties, and the best oxygen barrier properties. People attempt to coat PVA aqueous solution on ordinary plastic film or paper to prepare green flexible packaging materials with high barrier performance and environmental protection requirements, which will benefit the society. However, due to PVA's poor adhesion to plastic films and poor water resistance, its application is hindered. For a long time, people have devoted themselves to research to overcome these problems. 3. Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/452C08G73/04C09D129/04C09D7/12C08J7/04
Inventor 方治齐方华高吕维红张志来周永张瑜
Owner HEFEI ANMOFEI TECH