Hydrolysis-resistant alkenyl succinic anhydride sizing agent as well as preparation method and application thereof

A technology of alkenyl succinic anhydride and alkenyl succinic acid, applied in the field of papermaking, can solve problems such as unfavorable emulsion storage, inability to completely avoid adverse effects of surfactants, serious hydrolysis of ASA, etc.

Active Publication Date: 2021-05-18
山东济清科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

U.S. Patent No. 6,284,099 discloses a method for stabilizing ASA emulsions by using anionic particulate retention aids for papermaking such as bentonite, colloidal silicon dioxide, organic particulates, and a small amount of surfactants and chelating agents. The particulate retention aids can be combined with the sizing agent For one, the operation is simplified and the amount of surfactant is reduced; but the adverse effects brought by the surfactant cannot be completely avoided, and the addition of the particle component is too large, and the concentration of the prepared ASA emulsion is very low, which is not conducive to the development of the emulsion. storage, ASA hydrolyz...

Method used

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  • Hydrolysis-resistant alkenyl succinic anhydride sizing agent as well as preparation method and application thereof
  • Hydrolysis-resistant alkenyl succinic anhydride sizing agent as well as preparation method and application thereof
  • Hydrolysis-resistant alkenyl succinic anhydride sizing agent as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Example 1 Preparation of hydrolysis-resistant dodecenyl succinic anhydride sizing agent

[0030] (1) 1 part by weight of CNC (diameter 3nm, length 100nm) is dispersed in water to form a dispersion with a mass fraction of 0.05%, add 2 parts by weight of acetone, 10 parts by weight of ammonia monohydrate, and 0.02 parts by weight of cetyltrimethyl 25°C, 500W ultrasonic dispersion for 1 hour to obtain a mixed solution I; add 0.05 parts by weight of perfluorooctyltriethoxysilane to the mixed solution I, and continue ultrasonic dispersion for 1 hour to obtain a mixed solution II; Dry the mixed solution II under vacuum at 65°C to obtain CNC-R powder;

[0031] (2) Mix 1 part by weight of CNC-R powder with 20 parts by weight of perfluorohexane, ultrasonically disperse at 500W at 25°C for 1 hour, add 200 parts by weight of dodecenyl succinic anhydride and mix, and continue ultrasonic emulsification for 15 minutes to obtain ASA -A lotion;

[0032] (3) Mix 2 parts by weight of A...

Embodiment 2

[0033] Example 2 Preparation of hydrolysis-resistant hexadecenyl succinic anhydride sizing agent

[0034] (1) 1 part by weight of CNC (diameter 5nm, length 220nm) is dispersed in water to form a dispersion with a mass fraction of 1%, add 10 parts by weight of acetone, 20 parts by weight of ammonia monohydrate, and 0.2 parts by weight of cetyltrimethyl 1,000W ultrasonic dispersion at 25°C for 1 hour to obtain a mixed solution I; add 0.1 parts by weight of perfluorooctyltriethoxysilane to the mixed solution I, and continue to ultrasonically disperse for 1 hour to obtain a mixed solution II; Dry the mixed solution II under vacuum at 65°C to obtain CNC-R powder;

[0035](2) Mix 1 part by weight of CNC-R powder with 60 parts by weight of perfluorohexane, ultrasonically disperse at 1000W at 25°C for 1 hour, add 60 parts by weight of hexadecenyl succinic anhydride and mix, and continue ultrasonic emulsification for 15 minutes to obtain ASA -A emulsion; its micrograph is as figure 1...

Embodiment 3

[0038] Example 3 Preparation of hydrolysis-resistant alkenyl succinic anhydride sizing agent

[0039] (1) 2 parts by weight of CNC (diameter 10nm, length 500nm) are dispersed in water to form a dispersion with a mass fraction of 2%, add 1 part by weight of acetone, 2 parts by weight of ammonia monohydrate, and 0.6 parts by weight of cetyl trimethyl 25°C, 3000W ultrasonic dispersion for 1 hour to obtain mixed solution I; add 0.4 parts by weight of perfluorooctyltriethoxysilane to mixed solution I, and continue ultrasonic dispersion for 1 hour to obtain mixed solution II; Dry the mixture II in vacuum at 65°C to obtain CNC-R powder;

[0040] (2) Mix 1 part by weight of CNC-R powder with 100 parts by weight of perfluorohexane, ultrasonically disperse at 3000W at 25°C for 1 hour, add 10 parts by weight of octadecenyl succinic anhydride and mix, and continue ultrasonic emulsification for 15 minutes to obtain ASA -A lotion;

[0041] (3) Mix 1 part by weight of ASA-A emulsion with 1...

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Abstract

The invention provides a preparation method of a hydrolysis-resistant alkenyl succinic anhydride sizing agent. The preparation method comprises the following steps: mixing a CNC aqueous dispersion with acetone, ammonia monohydrate and hexadecyl trimethyl siloxane, and carrying out ultrasonic dispersion to obtain a mixed solution I; adding perfluorooctyltriethoxysilane into the mixed solution I, and carrying out ultrasonic dispersion to obtain a mixed solution II; drying the mixed solution II to obtain CNC-R powder; mixing CNC-R powder with perfluorohexane, carrying out ultrasonic dispersion, adding alkenyl succinic anhydride, mixing the components, and carrying out ultrasonic emulsification to obtain ASA-A emulsion; and mixing the ASA-A emulsion with a sodium dodecyl sulfate aqueous solution, and carrying out ultrasonic emulsification to obtain the hydrolysis-resistant alkenyl succinic anhydride sizing agent. The surface sizing performance of the ASA emulsion prepared by the method is remarkably improved, and meanwhile, the hydrolysis resistance of ASA can be greatly improved; in addition, the ASA sizing agent emulsion disclosed by the invention is simple in preparation process, low in emulsifying cost and good in sizing effect, and the dosage of an emulsifying agent is small.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a hydrolysis-resistant alkenyl succinic anhydride sizing agent and a preparation method and application thereof. Background technique [0002] Emulsion is a dispersion system formed by dispersing one liquid in another immiscible liquid. It is mostly formed by mixing water-insoluble oil phase and water phase. It is used in papermaking, food, cosmetics, medicine and other industries. widely. Emulsion is a thermodynamically unstable system. In order to maintain the relative stability of the emulsion (kinetic stability), an emulsifier or stabilizer must be added during the emulsion preparation process. Traditional emulsifiers or stabilizers are mostly surfactants and surface-active polymers, which maintain the stability of the emulsion by reducing the interfacial tension between the oil-water two-phase liquid, providing a stable interfacial film and increasing the viscosity of t...

Claims

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Application Information

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IPC IPC(8): D21H21/16
CPCD21H21/16D21H17/16D21H11/18C08L1/04
Inventor 于得海李玉呈赵锐胡飞鸿段征银王翔宇王哲李国栋王慧丽宋兆萍刘温霞
Owner 山东济清科技服务有限公司
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