Unlock instant, AI-driven research and patent intelligence for your innovation.

A Continuous Synthesis Method of Waterborne Polyurethane Based on Impact Mixing and Continuous Emulsification

A water-based polyurethane and synthetic method technology, applied in the field of water-based polyurethane, can solve the problems of high degree of production automation and low production cost, and achieve the effects of high degree of production automation, low production cost and stable product quality

Active Publication Date: 2019-08-13
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to overcome the problems in the prior art, the object of the present invention is to provide a continuous method for synthesizing water-based polyurethane based on impact mixing and continuous emulsification, which combines the advantages of external emulsification and internal emulsification to achieve rapid and efficient continuous The quality of water-based polyurethane for synthetic leather is stable, the production automation is high, the production cost is low, no solvent is used in the synthesis process, and there is no problem of solvent pollution and solvent residue

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of waterborne polyurethane continuous type synthetic method based on impact mixing and continuous emulsification, comprises the following steps:

[0036] (1) Raw material preparation: mix polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol to obtain raw material A, and diisocyanate as raw material B. Raw material A and Raw material B is stored in two raw material tanks, and the temperature is raised to 80°C for later use; deionized water, chain extender, and emulsifier are mixed to obtain raw material C, which is stored in the raw material tank, and the temperature is raised to 15°C for later use;

[0037] Among them, in raw material A, the molar ratio of polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol is 8:10:5:5;

[0038] In raw material A, the polymer diol polyadipate-1,4-butylene glycol ester diol (PBA).

[0039] In raw material B, the diisocyanate is isophorone diisocyanate (IPDI).

[0040] In...

Embodiment 2

[0047] A kind of waterborne polyurethane continuous type synthetic method based on impact mixing and continuous emulsification, comprises the following steps:

[0048] (1) Raw material preparation: mix polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol to obtain raw material A, and diisocyanate as raw material B. Raw material A and Raw material B is stored in two raw material tanks, and the temperature is raised to 85°C for later use; deionized water, chain extender, and emulsifier are mixed to obtain raw material C, which is stored in the raw material tank, and the temperature is raised to 35°C for later use;

[0049] Among them, in raw material A, the molar ratio of polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol is 8:15:5:7;

[0050] In the raw material A, the polymer diol is polytetrahydrofuran ether glycol (PTMEG);

[0051] Among the raw materials B, the diisocyanate hexamethylene diisocyanate (HDI).

[00...

Embodiment 3

[0059] A kind of waterborne polyurethane continuous type synthetic method based on impact mixing and continuous emulsification, comprises the following steps:

[0060] (1) Raw material preparation: mix polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol to obtain raw material A, and diisocyanate as raw material B. Raw material A and Raw material B is stored in two raw material tanks, and the temperature is raised to 82°C for later use; deionized water, chain extender, and emulsifier are mixed to obtain raw material C, which is stored in the raw material tank, and the temperature is raised to 20°C for later use;

[0061] Among them, in raw material A, the molar ratio of polymer diol, triethylamine, DMPA (dimethylol propionic acid), and 1,4-butanediol is 8:12:4:8;

[0062] In raw material A, polymer diol PPG (polyoxypropylene glycol).

[0063] In raw material B, the diisocyanate is 4,4'-dicyclohexylmethane diisocyanate (H12MDI).

[0064] In raw ma...

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 relates to a water-based polyurethane continuous synthesis method based on impact mixing and continuous emulsification. The method comprises the following steps: mixing polymer dibasic alcohol, triethylamine, DMPA (dimethylolpropionic acid) and 1,4-butanediol to obtain a raw material A, using diisocyanate as a raw material B, and respectively storing the raw material A and raw material B in two raw material tanks; mixing deionized water, a chain extender and an emulsifier to obtain a raw material C, and storing the raw material C in a raw material tank; adding the raw material A and raw material B into a first polyurethane casting machine, mixing to obtain a mixed solution, sending the mixed solution into a first reaction pipeline, and carrying out reaction at 85-90 DEG C for 15-20 minutes; and mixing the reaction product of the raw material A and raw material B with the raw material C to obtain a mixed solution, sending the mixed solution into a second reaction pipeline, and carrying out reaction at 45-50 DEG C for 10-15 minutes, thereby obtaining the water-based polyurethane. The method can continuously and quickly produce the water-based polyurethane, and has the advantages of stable production technique, stable product quality and high product performance.

Description

technical field [0001] The invention relates to the technical field of water-based polyurethane, in particular to a continuous synthesis method of water-based polyurethane based on impact mixing and continuous emulsification. Background technique [0002] With the country and people's high attention to environmental protection and the continuous improvement of requirements, solvent-based polyurethane is gradually replaced by non-polluting polyurethane due to its serious solvent pollution. Among them, water-based polyurethane (WPU) is due to its environmental protection and good comprehensive performance. It has very broad prospects in the field of polyurethane. [0003] At present, waterborne polyurethane can be prepared by external emulsification method and internal emulsification method. The external emulsification method is to rely on high shear force to emulsify polyurethane in water under the condition of adding an emulsifier. The WPU particles prepared by this method ...

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 Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/34C08G18/32C08G18/12C08J3/03C08L75/06C08L75/08
CPCC08G18/12C08G18/3206C08G18/348C08G18/4238C08G18/4825C08G18/4854C08G18/664C08G18/6659C08G18/6674C08G18/6692C08J3/03C08J2375/06C08J2375/08C08G18/3228C08G18/3231
Inventor 马兴元赵昭刘帅段月
Owner SHAANXI UNIV OF SCI & TECH