Reversed-phase thickening agent and preparation method thereof

A technology of thickener and inverse emulsion, which is applied in the field of inverse thickener and its preparation, can solve the problems of poor stability and wide particle size distribution of products, and achieve good stability, improved thickening effect, and low particle size Effect

Active Publication Date: 2021-05-14
湖南林特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyamide system W / O thickener is mainly used in printing and dyeing, cosmetics, coatings and other industries. The inverse emulsion polymerization process is a dynamic control process based on the micelle nucleation mechanism. The product has a wide particle size distribution and is stable. Poor sex

Method used

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  • Reversed-phase thickening agent and preparation method thereof
  • Reversed-phase thickening agent and preparation method thereof
  • Reversed-phase thickening agent and preparation method thereof

Examples

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preparation example Construction

[0032] Preparation of modified epoxy emulsifier:

[0033] Add 100kg of epoxy resin E20 into the reactor, raise the temperature to 110°C, add 50kg of allyl polyether, add 1kg of BPO in portions, and continue the reaction for 5 hours. When the temperature is lower than 40°C, the material is discharged.

Embodiment 1

[0035] A kind of preparation method of inverse thickener of the present invention, comprises the following steps:

[0036] S1. Oil phase preparation: Add 200kg of white mineral oil, 10kg of vinyl polysiloxane with a viscosity of 10cps, 5 parts of modified epoxy emulsifier, and 5 parts of cucurbituril into the reactor, and stir for 30 minutes with nitrogen gas to obtain a stable and uniform oil. phase solution;

[0037] S2. Water phase configuration: Add 200kg of water, 300kg of acrylic acid, 500kg of acrylamide, and 10kg of N,N′-methylenebisacrylamide into the same container, neutralize the solution with ammonia water until pH=6, and let the obtained solution stand for later use;

[0038] S3. Configuration of inverse emulsion: Stir the oil phase solution at high speed, slowly drop the water phase solution into the oil phase, and stir at a constant speed for a period of time to obtain a stable inverse emulsion;

[0039] S4. Polymerization reaction: continuously fill nitrogen t...

Embodiment 2

[0041] A kind of preparation method of inverse thickener of the present invention, comprises the following steps:

[0042] S1. Oil phase preparation: Add 200kg of white mineral oil, 20kg of vinyl polysiloxane with a viscosity of 10cps, 5 parts of modified epoxy emulsifier, and 5 parts of cucurbituril into the reactor, and stir for 30 minutes with nitrogen gas to obtain a stable and uniform oil. phase solution;

[0043] S2. Water phase configuration: Add 200kg of water, 300kg of acrylic acid, 500kg of acrylamide, and 10kg of N,N′-methylenebisacrylamide into the same container, neutralize the solution with ammonia water until pH=6, and let the obtained solution stand for later use;

[0044] S3. Configuration of inverse emulsion: Stir the oil phase solution at high speed, slowly drop the water phase solution into the oil phase, and stir at a constant speed for a period of time to obtain a stable inverse emulsion;

[0045] S4. Polymerization reaction: continuously fill nitrogen t...

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Abstract

The invention discloses a reversed-phase thickening agent. The thickening agent comprises a mixed acrylic acid monomer, vinyl polysiloxane, a non-polar solvent, a neutralizer, an emulsifier, an initiator and water, and the mixed acrylic acid monomer is selected from one or more of acrylic acid, acrylate, monocarboxyl or multi-carboxyl acrylamide; and the vinyl polysiloxane comprises monofunctional or bifunctional vinyl polysiloxane. According to the reversed-phase thickening agent disclosed by the invention, polysiloxane chain segments are introduced through vinyl, so that wide hydrogen-bond interaction can be formed by the thickening agent, and a thickening effect can be improved through strong compatibility of hydrophobic siloxane chain segments and a hydrophobic structure in a system. According to the preparation method of the reversed-phase thickening agent, the allyl polyether modified epoxy emulsifier is used as a main emulsifier and is matched with the supramolecular cavity compound for co-emulsification, so that the emulsion with low particle size and good stability is formed.

Description

technical field [0001] The invention belongs to the technical field of thickeners, in particular to an inverse thickener and a preparation method thereof. Background technique [0002] According to the type of polymer, thickeners can be roughly divided into non-electrolyte polymers such as slightly cross-linked polyacrylamide and polyethylene glycol, polymer electrolytes such as slightly cross-linked polyacrylate, and electrolyte monomers of acrylate and propylene. Three categories of micro-crosslinked copolymers of amide non-electrolyte monomers. According to the shape, thickeners are divided into four categories: powder type, W / O (water-in-oil) emulsion type, O / W (oil-in-water) emulsion type and dispersion type in which polymer particles are dispersed in oil phase medium. Among them, the W / O thickener of the polyamide system is more and more widely used because of its high thickening efficiency and fast phase inversion speed. [0003] Polyamide system W / O thickener is ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/06C08F220/56C08F222/38C08F2/30
CPCC08F283/124C08F220/06C08F220/56C08F222/385C08F2/30
Inventor 阳习春刘小林叶武龙蒋哲明欧阳湘易添福
Owner 湖南林特科技有限公司
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