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Process for preparing modified bone-glue adhesive

An adhesive and bone glue technology, which is used in the preparation of adhesives and the preparation of bone glue modified adhesives, can solve the problems of slow drying speed and high freezing point of bone glue liquid.

Inactive Publication Date: 2004-11-10
SHAANXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problems of high freezing point and slow drying speed of bone glue

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0004] Below in conjunction with embodiment the present invention is described in further detail:

[0005] (1) The reaction is carried out in a constant temperature water bath. Weigh 25g of bone glue in a three-necked flask, add 25g of water, stir and dissolve at 60°C; raise the temperature to 80°C, take 2g of sodium hydroxide and add 8-10g of water to make a solution, add it to the mixture of bone glue and water, and degrade it for 0.5h under constant temperature stirring . (2) Cool down to 70°C, add 2g of epichlorohydrin dropwise, and react at constant temperature for 1.5h; during this period, control pH=10-11. (3) Rapidly cool to room temperature, and add 2-8% glue quality drier such as bentonite to obtain a yellow-brown viscous product.

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Abstract

The invention relates to a process for preparing gelatine modified adhesive by using the common gelatine as principal raw material through moderate degradation, selecting a monomer containing epoxy radicals, under a finite condition, cross bonding copolymerization to obtain a binding agent produce. fine low-temperature freezing resistance property is also achieved.

Description

(1) Technical field [0001] The invention relates to a chemical product, in particular to a method for preparing an adhesive, that is, a method for preparing a bone glue modified adhesive. (2) Background technology [0002] Bone glue is a non-toxic, harmless, non-polluting, low-cost, high-adhesive, biodegradable water-soluble natural rubber material. Its main disadvantage is that the glue liquid has a high freezing point and is solid at room temperature. It is inconvenient to apply due to heating and melting; the drying speed is slow, and the modified products contain more harmful ingredients such as formaldehyde, which pollutes the environment. (3) Contents of the invention [0003] The invention solves the problems of high freezing point and slow drying speed of bone glue liquid. The present invention is accomplished through the following steps: (1) dissolving the bone glue with water in a weight ratio of 1:1, then adding alkali so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00
Inventor 李仲谨郝明德白国强朱敏吕宝强经德齐李小贝李小燕杨艳丽
Owner SHAANXI UNIV OF SCI & TECH
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