Preparation method of modified rosin resin aqueous solution

A technology of modified rosin and aqueous solution, which is applied in chemical modification of natural resins, adhesive additives, polymer adhesive additives, etc., can solve the problems of low storage stability, high production process and equipment requirements, and achieve improvement The effect of open time and adhesion, good product stability, simple production process and equipment

Pending Publication Date: 2021-05-14
厦门中坤化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, rosin resin emulsion is often used as the tackifier of water-based adhesives, which has high requirements for production technology and equipment, and rosin resin needs to be emulsified, and its storage stability is generally not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A kind of preparation method of modified rosin resin aqueous solution of the present invention comprises the following steps:

[0024] 1) Put the rosin into the reaction kettle after being crushed, and heat up to 150-200°C to melt;

[0025] 2) After the rosin is melted, put the unsaturated organic acid into the reaction kettle, control the temperature at 180-220°C, and keep it warm for 2-4 hours;

[0026] 3) Raise the temperature to 220-280°C, put the polyol into the reaction kettle, and keep it warm for 2-8 hours;

[0027] 4) Lower the temperature to 100-200°C, put the organic amine into the reaction kettle, and keep it warm for 2-10 hours;

[0028] 5) Lower the temperature to 50-100° C., put deionized water into the reaction kettle, and stir for 2-6 hours to prepare the modified rosin resin aqueous solution.

[0029] Specifically, by mass ratio, rosin: unsaturated organic acid: polyol: organic amine: deionized water = 1: (0.08~0.3): (0.05~0.25): (0.1~0.3): (1~1.2) ...

Embodiment 1

[0032] Put 100g of masson rosin into the reaction kettle after crushing, heat to 180°C to melt, add 10g of fumaric acid in batches, raise the temperature to 210°C, keep it warm for 2h, the acid value is 211.19mgKOH / g measured by sampling; heat up to 250°C, Add 15g of glycerol dropwise, keep warm for 6 hours, take a sample to measure the acid value of 132.15mgKOH / g, cool down to 170°C, add 13g of triethylamine, keep warm for 6h, keep warm, cool down to 90°C, add 112g of deionized water, keep warm Stir for 6h to obtain a modified rosin resin aqueous solution.

Embodiment 2

[0034] Put 100g of wetland rosin into the reaction kettle after pulverization, heat to 180°C to melt, add 25g of fumaric acid in batches, raise the temperature to 220°C, keep it warm for 4 hours, the acid value is 295.36mgKOH / g measured by sampling; raise the temperature to 270°C, Add 21g of glycerol dropwise, keep warm for 8 hours, take a sample to measure the acid value of 160.55mgKOH / g, cool down to 160°C, add 20g of triethylamine, keep warm for 6h, after the heat preservation is over, cool down to 100°C, add 120g of deionized water, keep warm Stir for 6h to obtain a modified rosin resin aqueous solution.

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Abstract

A preparation method of a modified rosin resin aqueous solution comprises the following steps: 1) crushing rosin, putting the crushed rosin into a reaction kettle, and heating for melting; 2) after the rosin is melted, adding unsaturated organic acid into the reaction kettle, controlling the temperature and keeping the temperature for a certain time; (3) raising the temperature and putting polyhydric alcohol into the reaction kettle for reaction; 4) cooling and adding organic amine into the reaction kettle for reaction; and (5) continuously cooling, adding deionized water into the reaction kettle, and stirring to obtain the modified rosin resin aqueous solution. The prepared modified rosin resin aqueous solution does not contain volatile organic solvents, is stable in storage, can replace traditional rosin emulsion and is added into a water-based adhesive for use, so that the adhesive force is improved, and the opening time is prolonged.

Description

technical field [0001] The invention relates to the field of chemical products, in particular to a method for preparing a modified rosin resin aqueous solution. Background technique [0002] The solvent used in water-based adhesives is water, which is non-polluting and inexpensive, and its performance can also meet the needs of most adhesives. It has great advantages in terms of economy and environmental protection. In the future, environmentally friendly adhesives will become International mainstream. At present, rosin resin emulsion is often used as the tackifier of water-based adhesives, which has high requirements on production technology and equipment, and rosin resin needs to be emulsified, and its storage stability is generally not high. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art, provide a kind of preparation method of modified rosin resin aqueous solution, do not need emulsific...

Claims

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Application Information

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IPC IPC(8): C09F1/04C09J11/08
CPCC09F1/04C09J11/08
Inventor 卢俊琳曾丽丽徐媚冉岳琴杨毅融
Owner 厦门中坤化学有限公司
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