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High stability cation dispersion rosin size and manufacture method thereof

A high-stability, cationic technology, applied in the direction of rosin addition, hydrophobic agent addition, etc., can solve the problems of difficult operation, physical damage, high cost, etc., and achieve the effect of increasing solid content, emulsifying effect and high stability

Active Publication Date: 2008-09-03
GUANGXI RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature and high pressure method requires high temperature equipment, high cost, and difficult operation, so it is rarely used in China at present; the normal pressure high temperature reversal method is difficult to be used alone due to the particularity of the molecular structure of rosin and the poor emulsification of cationic emulsifiers. Rosin is used for emulsification, which often needs to be used in conjunction with other co-emulsifiers, and because the emulsification is carried out at a higher temperature above the melting point of rosin, a large amount of water vapor is generated during the operation, and the rosin emulsification system has a transformation from W / O to O / W type reversal process, the preparation process of rosin gum is not easy to control
The method disclosed in Chinese patent CN1834347 combines the solvent method and the emulsification method into one, and makes cationic dispersed rosin gum under normal temperature and pressure. damage to the body of the person or the user

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: the preparation of cationic dispersed rosin gum (I)

[0033] Step 1: Preparation of 50% rosin ethanol solution:

[0034] Add 50 parts of rosin and 50 parts of ethanol into a 250ml Erlenmeyer flask, place the Erlenmeyer flask in a water bath, stir at a speed of 200-300rpm / min, raise the temperature of the water bath to 50°C, and continue stirring until the rosin dissolves When finished, take out the Erlenmeyer flask, cool to room temperature, plug it, and keep it for later use.

[0035] Step 2: Preparation of cationized maleic rosin A:

[0036] Add 5 parts of maleic rosin, 15 parts of ethanol and 0.8-1 part of NaOH into a four-necked bottle with a stirrer and a reflux condenser in sequence, start the stirrer, heat up to 50-60°C, and wait for the maleic rosin and After the NaOH solid is dissolved, add 6 parts of epichlorohydrin and 5 parts of trimethylamine, heat up to 75-90°C, reflux for 20-30 hours, stop the reaction, transfer the reaction system to a rota...

Embodiment 2

[0043] Embodiment 2: the preparation of cationic dispersed rosin gum (II)

[0044] Step 1: Preparation of 50% rosin ethanol solution:

[0045] Add 40 parts of rosin and 60 parts of ethanol into a 250ml Erlenmeyer flask, place the Erlenmeyer flask in a water bath, stir at a speed of 200-300rpm / min, raise the temperature of the water bath to 50°C, and continue stirring until the rosin dissolves When finished, take out the Erlenmeyer flask, cool to room temperature, plug it, and keep it for later use.

[0046] Step 2: Preparation of cationized maleic rosin A (same as Example 1).

[0047] Step 3: Preparation of cationic complex emulsifier B:

[0048] In a 250ml beaker, mix 2 parts of emulsifier AEO-9, 1.5 parts of cetyltrimethylammonium chloride and 1 part of cationized maleic rosin A, and stir evenly with a glass rod to obtain a cationic complex emulsifier b.

[0049] Step 4: the preparation of cationic rosin gum (II):

[0050] In a 250 ml beaker, mix 3 parts of 50% rosin et...

Embodiment 3

[0053] Embodiment 3: the preparation of cationic dispersed rosin gum (III)

[0054] Step 1: Preparation of 50% maleic rosin ethanol solution:

[0055] Add 50 parts of maleic rosin and 50 parts of ethanol in a 250 ml conical flask, place the conical flask in a water bath, stir at a speed of 200 to 300 rpm / min, raise the temperature of the water bath to 50°C, and continue stirring until Until the rosin is completely dissolved, take out the Erlenmeyer flask, cool to room temperature, plug it, and keep it for later use.

[0056] Step 2: Preparation of cationized maleic rosin A (same as Example 1).

[0057] Step 3: Preparation of cationic complex emulsifier C:

[0058] In a 250ml beaker, mix 1 part of emulsifier OP-10, 1 part of AEO-9, 1 part of dodecyltrimethylammonium chloride and 1.2 parts of cationized maleic rosin A, stir evenly with a glass rod Cationic complex emulsifier C can be obtained.

[0059] Step 4: the preparation of cationic rosin gum (III):

[0060] In a 250 m...

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Abstract

The invention relates to a high stable cationic dispersive rosin size and the preparation method, the content of a free rosin in the rosin size is more than 35%, the shelf life of the rosin size is longer than 1 year, after diluted by water, milkiness dispersive rosin sizes with different concentrations is obtained. The preparation method is that: firstly, under the conditions of room temperature and atmospheric pressure, the alcohol solution of 30-50% rosin or modified rosin is mixed with a cationic complex emulsifier which is made of a nonionic surfactant, a cationic surfactant and a cationization maleic rosin according to the weight ratio of 2:1-1.5:1-1.2, then the alcohol solvent is distilled because of vacuum. The rosin can be used in a papermaking technology in the process of papermaking.

Description

Technical field: [0001] The invention relates to a paper industry sizing agent-rosin glue prepared by using rosin or maleic rosin as a raw material and a preparation method thereof. Background technique: [0002] Cationic dispersed rosin gum is an important raw material in the paper industry. There are two main preparation methods at present: self-cationization method and cationic emulsifier emulsification method. The self-cationization method is mainly obtained through the copolymerization reaction of rosin and cationic small monomers. For example, the preparation method of alkaline sizing agent in cationic rosin disclosed in Chinese patent CN101054784 uses rosin and trimethylamine as the main raw materials, and selects an epoxy-containing The base monomer is reacted to produce a cationic rosin ester, and then combined with a nonionic emulsifier to produce a rosin emulsion. Cationic emulsifier emulsification method is to emulsify rosin or rosin solution by cationic emulsif...

Claims

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Application Information

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IPC IPC(8): D21H21/16D21H17/62
Inventor 阮恒龚福忠孙果宋
Owner GUANGXI RES INST OF CHEM IND CO LTD
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