Method for preparing temperature-resistant type compound bonding agent

A composite adhesive, temperature-resistant technology, applied in the direction of adhesives, etc., can solve the problems of poor wetting and leveling performance, high molecular weight, etc., and achieve the effects of saving organic diluent solvents, large cross-linking density, and reducing use costs

Active Publication Date: 2012-05-30
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of adhesive needs to add a large amount of organic solvents to achieve proper coating viscosity during the compounding process, and due to the high molecular weight, there are many aspects such as poor wetting and leveling performance on the film substrate after coating. The problem

Method used

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  • Method for preparing temperature-resistant type compound bonding agent
  • Method for preparing temperature-resistant type compound bonding agent
  • Method for preparing temperature-resistant type compound bonding agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a method for preparing a temperature-resistant composite adhesive, which can prepare a high-performance temperature-resistant composite adhesive used in composite flexible packaging film materials. The preparation method includes:

[0026] Prepare polyester polyol earlier, each raw material is all by mass percentage in the following steps;

[0027] a. Esterification reaction:

[0028] 3-6% trimethylolpropane, 20-30% terephthalic acid, 20-30% sebacic acid, 15-25% diethylene glycol, 15-25% neopentyl Diol is added into the polyester synthesis kettle, the temperature is raised to 210-230° C., and the reaction is carried out for 2 to 3 hours to complete the esterification; in the esterification reaction step, the water output of the polyester synthesis kettle is kept stable at the total amount of each raw material used in the esterification reaction. 0.5~1% / hour of quality, water distillation accounts for 6~12% of the total mass of raw materials use...

Embodiment 2

[0039] This embodiment provides a method for preparing a temperature-resistant composite adhesive, which can prepare a high-performance temperature-resistant composite adhesive used in composite flexible packaging film materials. The preparation method includes:

[0040] Prepare adhesive (preparing polyester polyol earlier), get each raw material as follows:

[0041]

[0042] Steps:

[0043] a. Esterification reaction:

[0044] 3.75 mass parts of trimethylolpropane, 25 mass parts of terephthalic acid, 22.5 mass parts of sebacic acid, 18.75 mass parts of diethylene glycol, and 15 mass parts of neopentyl glycol were added to poly In the ester synthesis kettle, heat up to 210-230°C and react for 2.5 hours; during the reaction, pay attention to observe the water outlet of the polyester synthesis kettle, and keep the water output stable at 0.5-1% of the total mass of each raw material per hour; distill water 9.42 parts by mass; the esterification reaction is completed, and the...

Embodiment 3

[0052] This embodiment provides a method for preparing a temperature-resistant composite adhesive, which can prepare a high-performance temperature-resistant composite adhesive used in composite flexible packaging film materials. The preparation method includes:

[0053] Prepare adhesive, get each raw material according to the table:

[0054]

[0055] Steps:

[0056] a. Esterification reaction:

[0057] 5 parts by mass of trimethylolpropane, 21 parts by mass of terephthalic acid, 28 parts by mass of sebacic acid, 18 parts by mass of diethylene glycol, and 18 parts by mass of neopentyl glycol were added to the poly In the ester synthesis kettle, heat up to 210-230°C and react for 3 hours; during the reaction, pay attention to observe the water outlet of the polyester synthesis kettle, and keep the water output stable at 0.5-1% of the total mass of raw materials used in the esterification reaction per hour , 9.53 parts by mass of distilled water; the esterification reaction...

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Abstract

The invention discloses a method for preparing a temperature-resistant type compound bonding agent. The method comprises: a, esterifying reaction, namely adding trimethylolpropane, terephthalic acid, decanedioic acid, diglycol and neopentylene glycol into a polyester synthesis kettle, heating the mixture, and realizing complete esterificaiton after the reaction; b, polycondensation reaction, namely creating a low vacuum of -0.04 to -0.02Mpa by pumping in the polyester synthesis kettle by pumping after the esterifying reaction is completed first, then creating a high vacuum of -0.09 to -0.05Mpa by pumping in the polyester synthesis kettle with the temperature of the kettle kept between 245 and 255 DEG C during the high-vacuum pumping, and finally creating a volume of-0.094Mpa by long-term pumping in the kettle, and after the long-vacuum pumping, completing the polycondensation reaction to obtain polyester polyhydric alcohol; and c, dissolution, namely cooling the prepared polyester polyhydric alcohol, adding acetic ether, and uniformly stirring the mixture to obtain the compound bonding agent. In the method, micromolecular tri-functionality polyhydric alcohol is added in the synthetic process of the polyester polyhydric alcohol, so that the prepared polyester polyhydric alcohol has more than two active end groups, and after the polyester polyhydric alcohol is cured by using a conventional multi-functionality curing agent, the crosslinking density is bigger and the temperature resistance is guaranteed.

Description

technical field [0001] The invention relates to the field of polymer adhesives, in particular to a preparation method of a high-performance temperature-resistant composite adhesive. Background technique [0002] Composite flexible packaging film is usually composed of several layers of films of different materials. Since its appearance in the 1950s, due to its excellent comprehensive performance, it has been widely used in food, medicine, cosmetics, daily necessities, chemicals, weapons and ammunition, precision instruments, Instrument complete sets of equipment and electronic appliances and other industries. The composite film production process used in flexible packaging mainly includes extrusion lamination and dry lamination. Among them, the dry lamination method has low investment in equipment, high product quality, simple process, and wide application. Its product output accounts for more than 50% of all composite films. , According to the requirements of the packaging...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/02C08G63/672C08G63/20
Inventor 赫长生沈峰邓煜东
Owner NANTONG GAOMENG NEW MATERIAL
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