Emulsifier making AKD glue fast cured

An emulsifier and fast technology, applied in the direction of water repellent addition, etc., can solve the problems of high cost, low fiber retention, slow fiber response, etc., and achieve the effects of reducing product cost, improving sizing efficiency, and fast curing speed

Inactive Publication Date: 2015-11-25
HEFEI LONGFA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] AKD is currently the most widely used medium-alkaline sizing agent in the paper industry. The development and development of its emulsifier has become a research hotspot. The traditional AKD emulsion uses cationic starch as an emulsifier and stabilizer, which has low retention on fibers, and The fiber reaction is slow and the sizing and curing time are long. The AKD emulsifiers that have appeared, such as high molecular polymer emulsifiers, are expensive and have the problem of polluting the environment. In order to overcome these problems, there is an urgent need for a suitable Emulsifier for rapid curing of medium-alkaline gums

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An emulsifier for rapid curing of AKD glue, composed of the following components: maltodextrin 4%, polyaluminum chloride 18%, modified polyamide epichlorohydrin resin 32%, acrylamide 42%, PH Regulator 2%, water-soluble fluoride 4%.

[0015] Wherein, the modified polyamide epichlorohydrin resin is heated to 160-200°C by adipic acid, thiourea, and diethylenetriamine at a weight component ratio of 5:4:8, and kept for 3-4 hours. The polyamide epichlorohydrin resin is modified, and the modified resin has better wet strength and has a synergistic effect on AKD sizing.

[0016] Wherein, the pH regulator includes a basic regulator and an acidic regulator, the basic regulator is potassium hydroxide, and the acidic regulator is a mixture of citric acid and hydrochloric acid.

[0017] Wherein, the usage amount of described emulsifier when emulsifying AKD glue is 8%.

Embodiment 2

[0019] An emulsifier for rapid curing of AKD glue, composed of the following raw materials: phospholipid starch amphoteric starch 6%, polyaluminum chloride 22%, modified polyamide epichlorohydrin resin 28%, acrylamide 40% , PH regulator 2%, water-soluble fluoride 2%.

[0020] Wherein, the modified polyamide epichlorohydrin resin is heated to 160-200°C by adipic acid, thiourea, and diethylenetriamine at a weight component ratio of 5:4:8, and kept for 3-4 hours. The polyamide epichlorohydrin resin is modified, and the modified resin has better wet strength and has a synergistic effect on AKD sizing.

[0021] Wherein, the pH regulator includes a basic regulator and an acidic regulator, the basic regulator is a mixture of sodium bicarbonate and sodium dihydrogen phosphate; the acidic regulator is hydrochloric acid.

[0022] Wherein, the usage amount of described emulsifier when emulsifying AKD glue is 6%.

Embodiment 3

[0024] An emulsifier for rapid curing of AKD glue, composed of the following components: oxidized cross-linked starch 2%, esterified starch 6%, polyaluminum chloride 24%, modified polyamide epichlorohydrin resin 28% , 35% acrylamide, 1% water-soluble fluoride, 4% anti-adhesive cross-linking agent.

[0025] Wherein, the modified polyamide epichlorohydrin resin is heated to 160-200°C by adipic acid, thiourea, and diethylenetriamine at a weight component ratio of 5:4:8, and kept for 3-4 hours. The polyamide epichlorohydrin resin is modified, and the modified resin has better wet strength and has a synergistic effect on AKD sizing.

[0026] Wherein, the pH regulator includes a basic regulator and an acidic regulator, the basic regulator is sodium hydroxide, and the acidic regulator is a mixture of adipic acid and phosphoric acid.

[0027] Wherein, the usage amount of described emulsifier when emulsifying AKD glue is 5%.

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PUM

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Abstract

The invention discloses an emulsifier making AKD glue fast cured. The emulsifier is composed of 2-8% of modified starch, 15-25% of aluminium polychlorid, 20-35% of modified polyamide epichlorhydrin resin, 30-45% of acrylamide, 1-2% of PH modifier and 2-4% of anti-sticking cross-linking agent. Compared with the prior art, the emulsifier has the advantages that safety is achieved, toxins do not exist, the environment cannot be polluted, intermediate-alkaline glue can be fast emulsified, the curing speed is higher, the water resistance is enhanced, and the stability and the gluing efficiency of a prepared AKD emulsion are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of packaging material neutral glue, and in particular relates to an emulsifier for rapidly curing AKD glue. Background technique [0002] AKD is currently the most widely used medium-alkaline sizing agent in the paper industry. The development and development of its emulsifier has become a research hotspot. The traditional AKD emulsion uses cationic starch as an emulsifier and stabilizer, which has low retention on fibers, and The fiber reaction is slow and the sizing and curing time are long. The AKD emulsifiers that have appeared, such as high molecular polymer emulsifiers, are expensive and have the problem of polluting the environment. In order to overcome these problems, there is an urgent need for a suitable An emulsifier for rapid curing of medium-alkaline gums. Contents of the invention [0003] The purpose of the present invention is to provide an emulsifier for fast curing of AKD glue aiming at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16
Inventor 林悦敏
Owner HEFEI LONGFA PACKING CO LTD
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