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An emulsifier for the emulsification of alkenyl succinic anhydride

A technology of alkenyl succinic anhydride and emulsifier, which is applied in the direction of water repellent addition, etc., can solve the problems of insufficient compactness of the structure and the decline of sizing effect, and achieve the effects of improved stability, enhanced storage stability, and obvious anti-hydrolysis effect

Active Publication Date: 2020-04-03
JIANGSU FEYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, after these polymers are emulsified with ASA, the thickness of the micelle layer of the micelles formed by the emulsifier is relatively thin, and the structure is not compact enough, which makes it easier for water molecules to enter the latex particles, resulting in the hydrolysis of ASA and the reduction of the sizing effect.

Method used

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  • An emulsifier for the emulsification of alkenyl succinic anhydride
  • An emulsifier for the emulsification of alkenyl succinic anhydride
  • An emulsifier for the emulsification of alkenyl succinic anhydride

Examples

Experimental program
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Effect test

Embodiment 1

[0099] Add 220 parts of deionized water, 40 parts of acrylamide, 3 parts of cetyl dimethyl allyl ammonium chloride (65%) , 20 parts of methacryloyloxyethyltrimethylammonium chloride (80%), 0.015 part of ethylenediaminetetraacetic acid disodium salt, 0.1 part of sodium hypophosphite, stir to make it fully dissolve, and adjust the pH to the level required by the trigger system. pH is required, adjust the speed to 300 rpm, pass nitrogen for 30 minutes to remove oxygen, adjust the system temperature to the initiation temperature, add 2 parts of 1% ammonium persulfate aqueous solution to initiate the reaction, and add 1 part of 1 more after 1-4 hours % V50 aqueous solution and continue to react for 1-3 hours, lower the temperature to 30-45°C, add glyoxal aqueous solution dropwise, and at the same time adjust the pH to 6.0-10.0 with aqueous sodium hydroxide solution, after reaching the viscosity, add dilute sulfuric acid to terminate the reaction, Then add sodium pyrosulfite solutio...

Embodiment 2

[0101] Add 225 parts of deionized water, 32 parts of acrylamide, 0.02 parts of N, N-methylenebisacrylamide, 3 parts of octadecyl Dimethyl allyl ammonium chloride (65%), 32 parts of dimethyl diallyl ammonium chloride (60%), 0.015 part of diethylene triamine pentaacetic acid sodium salt, 0.5 part of isopropanol, stir to make It is fully dissolved, adjust the pH to the required pH of the initiation system, adjust the rotation speed to 300 rpm, pass nitrogen gas for 30 minutes to remove oxygen, adjust the temperature of the system to the initiation temperature, and then add 2 parts of 1% ammonium persulfate aqueous solution to initiate the reaction. After 1-4 hours, add 1 part of 1% V50 aqueous solution again and continue to react for 1-3 hours, cool down to 30-45°C, add glutaraldehyde aqueous solution dropwise, and at the same time adjust pH to 6.0-10.0 with sodium carbonate aqueous solution to reach viscosity Finally, add dilute hydrochloric acid to terminate the reaction, then ...

Embodiment 3

[0103] Add 225 parts of deionized water, 32 parts of acrylamide, 0.02 parts of N, N-methylenebisacrylamide, 3 parts of octadecyl Dimethyl allyl ammonium chloride (65%), 32 parts of dimethyl diallyl ammonium chloride (60%), 0.015 part of EDTA disodium salt, 0.5 part of isopropanol, stir to make It is fully dissolved, adjust the pH to the required pH of the initiation system, adjust the rotation speed to 300 rpm, pass nitrogen gas for 30 minutes to remove oxygen, adjust the temperature of the system to the initiation temperature, and then add 2 parts of 1% ammonium persulfate aqueous solution to initiate the reaction. After 1-4 hours, add 1 part of 1% V50 aqueous solution again and continue to react for 1-3 hours, cool down to 30-45°C, add succinic dialdehyde aqueous solution dropwise, and at the same time adjust the pH to 6.0-10.0 with potassium hydroxide aqueous solution to reach After the viscosity is reached, add dilute sulfuric acid to stop the reaction, then add sodium bis...

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Abstract

The invention discloses an emulsifier for ASA (alkenyl succinic anhydride) emulsification. The emulsifier is formed as follows: a polymer is formed by a main functional monomer in a water solution containing a chain transfer agent and a chelating agent under the initiating of an initiator, an intermediate product is prepared from the polymer and polyaldehyde through a reaction, a stabilizer is added to the intermediate product, and the emulsifier is prepared; the main functional monomer comprises a non-ionic monomer, long-chain alkyl allyl ammonium chloride and a cationic monomer. Long-chain alkyl is introduced to the emulsifier and has a relatively remarkable improvement effect on the emulsification function and efficiency; through a reaction of polyaldehyde and an amino group, a crosslinked macromolecule structure is formed and has relatively remarkable improvement effect on the emulsification function, and the under the action of a stabilizer, the storage stability can reach 6 months or longer. When used as an ASA emulsifier, the emulsifier has a remarkable ASA hydrolytic resistance function, and the stability of an emulsified liquid is also improved when the stabilizer is usedin the emulsifier; the emulsifier has a good emulsification function on ASA with olefin chains of different lengths, has good emulsified liquid particle size distribution and high stability.

Description

technical field [0001] The invention relates to the technical field of water-soluble polymers, in particular to an emulsifier for the emulsification of alkenyl succinic anhydride. Background technique [0002] Alkenyl succinic anhydride, referred to as ASA, is one of the reactive neutral sizing agents commonly used in the paper industry. Sizing is a very important process in the paper industry, and paper can be endowed with good water resistance through sizing. At present, ASA is mainly used for gypsum face paper, cardboard paper, liquid wrapping paper, etc. ASA has the advantages of strong penetration resistance and fast sizing and curing. [0003] ASA structural formula (Ⅴ) is as follows: [0004] [0005] The acid anhydride in the molecular structure of ASA is the active group with reactive sizing effect. Under papermaking conditions, the acid anhydride in the ASA molecule reacts with the hydroxyl group on the cellulose macromolecular chain to form an ester bond, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F226/02C08F220/34C08F2/38C08J3/24D21H21/16
CPCC08F2/38C08F220/56C08J3/24C08J2333/26D21H21/16C08F226/02C08F220/34
Inventor 史亚鹏何国锋王勤魏星光陈炀卫巧磊郭志宇
Owner JIANGSU FEYMER TECH
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