Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of Bola type betaine surfactant

A technology of surfactant and betaine, which is applied in the field of chemical preparation, can solve the problems of unreachable industrial production, high cost, and low conversion rate of alkylamide, and achieve the effect of reducing consumption and production cost

Active Publication Date: 2015-03-25
GUANGZHOU TINCI MATERIALS TECH
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing preparation method, the conversion rate of alkanoic acid in the preparation step of N,N-bis(N,N-dimethylaminopropyl) alkylamide is too low (about 70%), which cannot reach the level of industrial production. Requirements; In the quaternization preparation step of Bola type betaine, ethanol or acetone needs to be used as solvent, the cost is higher, and the alkali catalyst is not used reasonably, resulting in excessive use of sodium chloroacetate, N, N-bis(N, N-di The conversion rate of methylaminopropyl) alkyl amides is lower, can not meet the demand of suitability for industrialized production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of Bola type betaine surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of a kind of Bola type betaine surfactant (Bola type lauryl betaine) of the present embodiment comprises the steps:

[0024] (1) Preparation of N,N-bis(N,N-dimethylaminopropyl)alkylamide

[0025] A. Put dodecanoic acid and tetramethyldipropylenetriamine in a molar ratio of 1:0.90 into the reactor, heat up to 191°C under the protection of nitrogen, and react for 3 hours under the pressure of 0.35MPa; then vacuumize for 2 hours, vacuum The temperature is kept below -0.095MPa, and the temperature is maintained at 191°C;

[0026] B. Put tetramethyldipropylenetriamine into the reactor of step A again, its molar ratio to alkyl acid is 0.15:1, under the protection of nitrogen, heat up to 191° C., under 0.35MPa pressure, react for 6 hours; Then vacuumize for 6 hours, keep the vacuum degree below -0.095MPa, and keep the temperature at 191°C to obtain N,N-bis(N,N-dimethylaminopropyl)alkylamide; the obtained N,N-bis The acid value of (N,N-dimethylaminoprop...

Embodiment 2

[0031] The preparation method of a kind of Bola type betaine surfactant (Bola type myristyl betaine) of the present embodiment comprises the steps:

[0032] (1) Preparation of N,N-bis(N,N-dimethylaminopropyl)alkylamide

[0033] A. Put tetradecanoic acid and tetramethyldipropylenetriamine with a molar ratio of 1:0.85 into the reactor, heat up to 206°C under the protection of nitrogen, and react for 3.5h under the pressure of 0.50MPa; then vacuumize for 2h, The vacuum degree is kept below -0.095MPa, and the temperature is maintained at 206°C;

[0034] B. Put tetramethyldipropylenetriamine into the reactor of step A again, the molar ratio of it to alkanoic acid is 0.30:1, under the protection of nitrogen, heat up to 206°C, and react for 3h under the pressure of 0.50MPa; Then vacuumize for 3 hours, keep the vacuum degree below -0.095MPa, and keep the temperature at 206°C to obtain N,N-bis(N,N-dimethylaminopropyl)alkylamide; the obtained N,N-bis The acid value of (N,N-dimethylami...

Embodiment 3

[0039] The preparation method of a kind of Bola type betaine surfactant (Bola type oleic acid base betaine) of the present embodiment comprises the steps:

[0040] (1) Preparation of N, N-bis (N, N-dimethylaminopropyl) alkyl amides:

[0041] A. Put oleic acid and tetramethyldipropylenetriamine in a molar ratio of 1:0.95 into the reactor, heat up to 196°C under the protection of nitrogen, and react for 3 hours under the pressure of 0.45MPa; Keep it below -0.095MPa, and keep the temperature at 196°C;

[0042] B. Then put tetramethyldipropylenetriamine into the reactor of step A, and its molar ratio to alkyl acid is 0.10:1. Under the protection of nitrogen, heat up to 200°C and react for 5h under the pressure of 0.50MPa; Then vacuumize for 5 hours, keep the vacuum degree below -0.095MPa, and keep the temperature at 200°C to obtain N,N-bis(N,N-dimethylaminopropyl)alkylamide; the obtained N,N-bis The acid value of (N,N-dimethylaminopropyl) alkylamide was 1.6 mgKOH / g, and the conv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Acid valueaaaaaaaaaa
Acid valueaaaaaaaaaa
Acid valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a Bola type betaine surfactant. The preparation method comprises the following steps: (1) a preparation step of N, N-bis(N, N-dimethylamino propyl) alkyl amide; (2) a quaternization preparation step. In the preparation method disclosed by the invention, the N, N-bis(N, N-dimethylamino propyl) alkyl amide is prepared through a two-step process, so that the conversation ratio of the alkyl acid can be increased to be more than 99.0% to the greatest extent, the raw material utilization rate is high and the industrial production requirements are achieved; in the quaternization preparation step of the Bola type betaine surfactant, the conversation ratio of the N, N-bis(N, N-dimethylamino propyl) alkyl amide is increased to be more than 99.9% and the consumption of chloroacetate is lowered by controlling the molar ratio, the temperature and the pH of the materials and the addition amount of an alkaline catalyst; the water is used as a solvent to avoid using an organic solvent, so that the preparation cost is lowered and the industrial production requirements are achieved.

Description

technical field [0001] The invention relates to the technical field of chemical preparation, in particular to a preparation method of a Bola type betaine surfactant. Background technique [0002] Bola-type surfactants are amphiphilic compounds composed of two hydrophilic groups connected by a hydrophobic chain. Due to the special structure of Bola-type molecules, it exists in a U-shaped conformation on the surface of the solution, that is, two hydrophilic groups extend into the water phase, and the curved hydrophobic chain extends toward the atmosphere. Therefore, the monomolecular film formed at the gas-liquid interface exhibits some unique physical and chemical properties. Betaine surfactant is an amphoteric surfactant with excellent performance. It has good foaming and decontamination capabilities, rich and delicate foam, and good stability. It can be compounded with various surfactants, and it is mild and non-irritating. Low, compounded with strong irritating surfactan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C231/08C07C233/47C07C233/49
Inventor 吴海龙黄建帮李琳
Owner GUANGZHOU TINCI MATERIALS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com