Cationic reactive Gemini polyurethane surfactant and preparation method thereof

A surfactant and reactive technology, which is applied in the field of cationic reactive gemini polyurethane surfactant and its preparation, can solve the problems of easy migration and precipitation, and achieve the effects of solving environmental pollution problems, excellent surface activity, and solving migration problems

Inactive Publication Date: 2014-12-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the surfactant solves the problem of easy migration and precipitation of traditional surfactants; on the other hand, it improves the compatibility with the matrix, water resistance, dielectric properties, optical transparency, etc. Strengthening, toughening, reducing surface tension, etc.

Method used

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  • Cationic reactive Gemini polyurethane surfactant and preparation method thereof
  • Cationic reactive Gemini polyurethane surfactant and preparation method thereof
  • Cationic reactive Gemini polyurethane surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Add 140.5 parts of pre-dehydrated dodecylamine polyoxyethylene (10) ether (the number of carbon atoms in the hydrophobic carbon chain part is 12, and the number of hydrophilic ethoxy groups m+n=10) into the heated, Add 100 parts of isophorone diisocyanate and 0.12 parts of catalyst bismuth laurate into the sealed reaction kettle of the temperature control and dispersion device, and react at 60°C for 3 hours to reach the theoretical residual isocyanate value.

[0038] (2) Add 45 parts of PPG400 (polypropylene glycol with a relative molecular mass of 400) and continue to react at 60°C for 3 hours to reach the theoretical residual isocyanate value.

[0039](3) Add 23.6 parts of blocking agent butanone oxime to block the remaining isocyanate in the prepolymer, react at 80 degrees for 2 hours, no remaining isocyanate is detected, cool down to 40°C, add neutralizing agent glacial acetic acid 13.5 parts fully neutralize the cationic groups in the prepolymer, and then add 1...

Embodiment 2

[0046] (1) Add 41.4 parts of pre-dehydrated octylamine polyoxyethylene (2) ether (the number of carbon atoms in the hydrophobic carbon chain part is 8, and the number of hydrophilic ethoxy groups m+n=2) into the heated, controlled Add 100 parts of hydrogenated dibenzylidene diisocyanate and 0.2 parts of zinc isooctanoate as a catalyst to react at 70°C for 2 hours to reach the theoretical residual isocyanate value in the sealed dispersion kettle of the mild dispersion device.

[0047] (2) Add 8.6 parts of 1,4-butanediol and continue to react at 70°C for 2 hours to reach the theoretical residual isocyanate value.

[0048] (3) Add 15.3 parts of blocking agent acetone oxime to block the remaining isocyanate in the prepolymer, react at 80 degrees for 4 hours, no remaining isocyanate is detected, cool down to 40°C, add 11.5 parts of neutralizing agent glacial acetic acid neutralize the cationic groups in the prepolymer, and then add 413 parts of deionized water to disperse with high...

Embodiment 3

[0051] (1) 604 parts of octadecylamine polyoxyethylene (40) ether (the number of carbon atoms in the hydrophobic carbon chain part is 18, and the number of hydrophilic ethoxy groups m+n=40) that has been dehydrated in advance is added to the heated, Add 100 parts of hexamethylene diisocyanate and 0.5 parts of catalyst bismuth naphthenate to the sealed dispersion kettle of the temperature control and dispersion device, and react at 60°C for 4 hours to reach the theoretical residual isocyanate value.

[0052] (2) Add 149 parts of PEG1000 (polyethylene glycol with a relative molecular mass of 1000) and continue to react at 60°C for 4 hours to reach the theoretical residual isocyanate value.

[0053] (3) Add 55 parts of blocking agent acetanilide to block the remaining isocyanate in the prepolymer, react at 75°C for 4 hours, no remaining isocyanate is detected, cool down to 40°C, add neutralizing agent glycolic acid 22.7 1 part fully neutralizes the cationic groups in the prepolym...

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Abstract

The invention discloses a cationic reactive Gemini polyurethane surfactant and a preparation method thereof and belongs to the technical field of fine chemicals. The cationic reactive Gemini polyurethane surfactant is obtained by enabling excess diisocyanate to sequentially react with fatty amine polyoxyethylene ether and a chain extender, further adding a blocking agent to block remaining isocyanate groups, then neutralizing and dispersing in water. A series of surfactants with different performances, uses and unblocking temperatures can be obtained by selecting the types of fatty amine polyoxyethylene ether, the chain extender and the blocking agent. The cationic reactive Gemini polyurethane surfactant disclosed by the invention can solve the problem that the traditional surfactant is easy to migrate and precipitate on the one hand, and improve the compatibility of the cationic reactive Gemini polyurethane surfactant and the traditional surfactant, as well as water resistance, dielectricity, optical transparency and other performances on the other hand; furthermore, the cationic reactive Gemini polyurethane surfactant can realize the effects of strengthening, toughening, reducing surface tension and the like for a matrix, and shows broad application prospects in the fields of preparation of polymer emulsions, finishing of leather and synthetic leather, textile coating and the like.

Description

technical field [0001] The invention relates to a cationic reaction type gemini polyurethane surfactant and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] Surfactants are widely used in various fields such as textile, dyeing and finishing, leather making, paper making, emulsion preparation, petroleum industry, detergent, cosmetics, etc. , but in many cases, surfactants only function in certain stages, and they may not be needed in later stages, and their existence may even bring some negative effects. For example, when ordinary small-molecule surfactants are used in the preparation of emulsions such as acrylic resins and polyurethanes, they only work in the stages of emulsification and storage. After the emulsion is applied to the film-forming surfactant, it will migrate to the surface of the latex film and occur Enrichment, thereby reducing the water resistance, solvent resistance, mechanical properties, opti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/50
CPCC08G18/755C08G18/3206C08G18/3215C08G18/3271C08G18/5024C08G18/6674C08G18/6688
Inventor 范浩军刘世勇陈意郭学方鲍亮盖静
Owner SICHUAN UNIV
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