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

Cationic cyanuric chloride derivative tanning agent and preparation method thereof

A cyanuric chloride derivative and cationic technology, which is applied in the field of cationic cyanuric chloride derivative tanning agent and its preparation, can solve the problems that anionic dyes are not easy to be dyed, and the anionicity of crust leather is strong

Inactive Publication Date: 2021-05-11
SHAANXI UNIV OF SCI & TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cationic cyanuric chloride derivative tanning agent and a preparation method thereof, which solves the problems in the prior art that the tanned crust leather is highly anionic and anionic dyes are not easy to be dyed.

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
  • Cationic cyanuric chloride derivative tanning agent and preparation method thereof
  • Cationic cyanuric chloride derivative tanning agent and preparation method thereof
  • Cationic cyanuric chloride derivative tanning agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention discloses a preparation method of a cationic cyanuric chloride derivative tanning agent, which comprises the following steps:

[0025] (1) In parts by mass, 9.22 to 36.88 parts of cyanuric chloride, 21.35 to 100.31 parts of solvent and 7.12 to 33.44 parts of deionized water were stirred and mixed uniformly in an ice-water bath to obtain mixture A;

[0026] (2) Add 2.98 to 20.44 parts of tertiary ammonia compounds dropwise to mixture A, maintain the temperature at 0 to 5°C, and obtain a mixed system after reaction; adjust the pH of the mixed system with an acid-binding agent solution until the pH is stable at 6.0 to 7.0 , continue to react for 4 to 6 hours to obtain mixture B;

[0027] (3) Filter the mixture B to obtain a filter cake. After washing the filter cake, vacuum-dry it for 4-6 hours under the conditions of a vacuum degree of 0.08-0.1MPa and a temperature of 20-25°C to obtain a solid C, which is ground and pulverized , to obtain white powder catio...

Embodiment 1

[0033] The invention discloses a preparation method of a cationic cyanuric chloride derivative tanning agent, which comprises the following steps:

[0034] 1) Add 9.22g of cyanuric chloride, 25.08g of acetone and 8.36g of deionized water into a reactor equipped with a stirrer and a thermometer, place in an ice-water bath and stir evenly to obtain mixture A;

[0035] 2) Slowly add 5.11 g of 3-dimethylaminopropylamine dropwise, keep the temperature at 0° C., and after the reaction, a mixture is obtained; constantly adjust the pH of the mixing system with a sodium carbonate solution with a mass concentration of 10%, until the pH of the system is stable at 6.5, React for 4 hours, discharge to obtain mixture B;

[0036] 2) Filter the mixture B, wash the filter cake with 3°C deionized water and acetone solution several times, and then vacuum dry the filter cake for 4 hours at a vacuum degree of 0.08MPa and a temperature of 25°C to obtain solid C, which After C is ground and pulveri...

Embodiment 2

[0038] The invention discloses a preparation method of a cationic cyanuric chloride derivative tanning agent, which comprises the following steps:

[0039] 1) Add 36.88g of cyanuric chloride, 100.31g of toluene and 33.44g of deionized water into a reactor equipped with a stirrer and a thermometer, place in an ice-water bath and stir evenly to obtain mixture A;

[0040] 2) Slowly add 20.44g of 3-dimethylaminopropylamine dropwise, keep the temperature at 5°C, and continuously adjust the pH of the system with a sodium hydroxide solution with a mass concentration of 30%, until the pH of the system is stable at 7.0, react for 4 hours, and discharge to obtain mixture B;

[0041] 2) Filter the mixture B, wash the filter cake with 0°C deionized water and acetone solution for several times, and then vacuum dry the filter cake for 6 hours under the condition of vacuum degree of 0.1MPa and temperature of 22°C to obtain solid C. After C is ground and pulverized, a white powder cationic c...

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
temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of tanning, and discloses a cationic cyanuric chloride derivative tanning agent and a preparation method thereof. The preparation method comprises the following steps of stirring and uniformly mixing 9.22-36.88 parts by mass of cyanuric chloride, 21.35-100.31 parts by mass of solvent and 7.12-33.44 parts by mass of deionized water under the ice-water bath condition to obtain a mixture A, dropwise adding 2.98-20.44 parts of tertiary ammonia compounds into the mixture A, and maintaining the temperature at 0-5 DEG C to obtain a mixed system, adjusting the pH value of the mixed system by using an acid-binding agent solution until the pH value is stabilized at 6.0-7.0, and reacting for 4-6 hours to obtain a mixture B, and filtering the mixture B to obtain a filter cake, washing the filter cake, carrying out vacuum drying under a vacuum condition for 4-6 hours to obtain a solid C, and grinding and crushing the solid C to obtain the white powdery cationic cyanuric chloride derivative tanning agent. In use, the characteristic that the cationic property of tanning leather fibers of a conventional chrome-free tanning agent is weakened can be improved, and meanwhile, the absorption and combination of crust leather on anion dyeing and finishing materials in the later dyeing and fat liquoring section can be improved.

Description

technical field [0001] The invention relates to the technical field of leather tanning, in particular to a cationic cyanuric chloride derivative tanning agent and a preparation method thereof. Background technique [0002] Chrome tanning has been the most commonly used tanning method in the leather industry to produce different types of lightweight leathers due to its ease of operation and good overall tanning properties. However, during the chrome tanning process, the utilization rate of chrome is only 60% to 70%, and the chromium-containing wastewater, sludge, waste chrome scrap, etc. produced after tanning have caused a huge impact on the ecological environment. Scholars at home and abroad have done a lot of research on chrome-free tanning instead of chrome powder tanning agents, such as replacing chrome tanning agents with mineral tanning agents such as titanium and aluminum, and implementing combined tanning with vegetable tanning agents and non-chrome metal salt tannin...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/44C07D251/26C14C3/26
CPCC07D251/44C07D251/26C14C3/26C07D251/36C14C3/28C14C9/02D06P3/3206D06P3/3226
Inventor 强西怀谢超
Owner SHAANXI UNIV OF SCI & 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