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

Preparation method for series of polyurethane catalysts

A technology of polyurethane catalyst and solid acid catalyst, which is applied in the field of preparation of a series of polyurethane catalysts, can solve problems such as inability to prepare THBA, and achieve the effects of low equipment operation requirements, easy handling, and good selectivity

Active Publication Date: 2016-02-24
恒光新材料(江苏)股份有限公司
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Neither of the above two methods can be used to prepare THBA

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 for series of polyurethane catalysts
  • Preparation method for series of polyurethane catalysts
  • Preparation method for series of polyurethane catalysts

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] Mode 1, the preparation method of a silicon-aluminum supported solid acid catalyst with a silicon-aluminum ratio of 1:1, using SiO 2 / Al 2 o 3 =The mass ratio of 1:1 is carrier, carries out following steps successively:

[0053] (1) Dipping:

[0054] Immerse 50g of the carrier in 150ml of ammonium sulfate aqueous solution with a mass concentration of 25%, filter after 25 hours, and dry at 65-75°C to constant weight;

[0055] Repeat the above-mentioned soaking, filtering and drying twice more to obtain the precipitate I;

[0056] (2) Roasting:

[0057] Calcining the precipitate I at 400-420° C. for 3 hours to obtain a silica-alumina supported solid acid catalyst.

Embodiment 1

[0058] Example 1, a silicon-aluminum supported solid acid catalyst with a silicon-aluminum ratio of 1:1 (prepared in the above method 1), using N,N-dimethylethanolamine and N-methyldiethanolamine as starting materials, Follow the steps in order:

[0059] 1) synthesis

[0060] Add 356g (4mol) N,N-dimethylethanolamine, 476g (4mol) N-methyldiethanolamine, 40g silica-alumina supported solid acid catalyst into a 1000ml stainless steel autoclave, and replace the air in the autoclave with nitrogen for 2 minutes. Lower the temperature to 145-155°C and react for 15 hours. After the reaction time is up, stop heating, cool down to 30°C, vent, filter, and take the filtrate for rectification in the following steps. The filter cake is used as a silica-alumina supported solid acid catalyst for the next batch of reactions.

[0061] 2) Distillation and separation

[0062] The filtrate is transferred to a 1000ml single-necked flask equipped with a 30cm packed rectification column (using Rasc...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method for a series of polyurethane catalysts. The preparation method comprises the following steps: SioO2 and Al2O3 with different ratios are employed as carriers, soaked in an ammonium sulfate aqueous solution, dried and roasted, and a silicon-aluminum-loaded solid acid catalyst is prepared; then a mixture of N,N-dimethyl ethanolamine and N-methyl diethanolamine is employed as a raw material, the raw materials and the silicon-aluminum-loaded solid acid catalyst accounting for 1-10% of the total weight of the raw material are added in an autoclave and a reaction is carried out; the filtrate after the reaction is subjected to rectification separation and therefore N-methyl morpholine, 2-dimethylaminoethyl ether and N,N,N'-trimethyl-N'-hydroxyethyl-bis-amino ethyl ether are obtained respectively.

Description

technical field [0001] The invention relates to a preparation method of a series of polyurethane catalysts, specifically preparing N,N,N'-trimethyl-N'-hydroxyethyl-bis-aminoethyl ether, by-products N-methylmorpholine, bis The synthetic method of (2-dimethylaminoethyl) ether, these 3 kinds of compounds all can be used as polyurethane catalyst. Background technique [0002] N-methylmorpholine (abbreviated as NMM), whose general structural formula is shown in S-1, is an important class of organic chemical intermediates, which can be used as catalysts, spinning aids, solvents, etc. for polyurethane foam synthesis. [0003] [0004] Bis(2-dimethylaminoethyl) ether (abbreviated as A-1), whose general structural formula is shown in S-2, is an important polyurethane catalyst, which has the characteristics of high catalytic foaming reactivity and strong selectivity, and is commonly used It is used in the production of soft bulk foam and high resilience foam. [0005] [0006]...

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): C07C217/08C07C213/06C07D295/03C07D295/023B01J27/053
CPCB01J27/053C07C213/06C07D295/023C07D295/03C07C217/08
Inventor 张琪叶小明张超张华叶开天张依
Owner 恒光新材料(江苏)股份有限公司
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