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Preparation of environment protection type adhesive

An adhesive and environment-friendly technology, applied in the direction of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., can solve the problems that cannot be fundamentally solved, reduce the release of free formaldehyde, etc., and achieve high viscosity , low cost, simple process effect

Inactive Publication Date: 2009-06-24
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two ways to reduce the release of free formaldehyde. One is to add formaldehyde scavenger or add some other substances to modify the phenolic or urea-formaldehyde resin adhesive. Adhesive degradation releases free formaldehyde, and this effect is long-term; the second is to optimize the production process of phenolic or urea-formaldehyde resin adhesives
But neither of these can fundamentally solve the problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Under normal pressure, add 70ml of water and 80g of sucrose to a 250ml three-necked bottle, heat and stir until the sucrose is completely dissolved, then add 9g of hydroquinone, stir to make it completely dissolve, then add 2.1g of zinc acetate, and stir at a constant temperature to make the reaction The temperature is 85 ℃, reaction 3h, namely the product.

Embodiment 2

[0017] Under normal pressure, add 55ml of water and 100g of glucose into a 250ml three-necked bottle, heat and stir until the glucose is completely dissolved, then add 17g of p-cresol, stir to make it completely dissolve, then add 15g of barium hydroxide, and stir at a constant temperature to make the reaction temperature at At 65°C, react for 9 hours to obtain the product.

Embodiment 3

[0019] The temperature is 300°C, add 50ml of water and 100g of lactose into the container, heat and stir until the lactose is completely dissolved, then add 14.7g of m-cresol, stir to make it completely dissolve, then add 8g of sodium hydroxide, and react for 3 minutes to obtain the product.

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PUM

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Abstract

The invention discloses a method for preparing an environment-friendly adhesive. The key points thereof lie in the steps as follows: converting sugar into aldehyde under catalysis of an alkali catalyst to then react with phenol or amine compounds to obtain the environment-friendly adhesive, wherein, the reaction can be performed either under normal pressure or under high pressure. The adhesive prepared by the invention is environment-friendly, large in viscosity and high in adhesion strength and can be applied to building industry, wood-processing industry, paper products, interior wall coating or laminated products; without formaldehyde. The adhesive prepared by the invention can be widely applied in the fields that are closely related to human lives, like home decoration and artificial sheets, and is substantially harmless to the environment and human body. The preparation method for the adhesive provided by the invention is simple in process, free from the discharge of 'the three wastes' and inexpensive in cost.

Description

technical field [0001] The invention relates to a preparation method of an adhesive, in particular to a preparation method of an environment-friendly adhesive, which can be used in construction industry, wood processing industry, paper products, interior wall coatings and laminated products, etc. Background technique [0002] Aldehyde resins can be used as raw materials for thermosetting resins, which can be prepared by reacting phenolic or amine compounds with aldehyde compounds. At present, aldehyde resin adhesives generally contain free formaldehyde, which will be released into the environment during use and directly affect human health. In order to protect the environment and maintain human health, greening has become a research and development trend of adhesives. There are two ways to reduce the release of free formaldehyde. One is to add formaldehyde scavenger or add some other substances to modify the phenolic or urea-formaldehyde resin adhesive. Adhesive degradatio...

Claims

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Application Information

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IPC IPC(8): C09J161/04C09J161/20C08G8/04C08G12/02
Inventor 陈栓虎高燕吴伟佳肖义
Owner NORTHWEST UNIV
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