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

Polyurethane thickener compound with mixed side long-chain alkyl group, and preparation method thereof

A polyurethane thickener and long-chain alkyl technology, which is applied in the field of polyurethane thickener compound and its preparation, can solve the problem that the thickener cannot be fully dissolved or dispersed, affects product quality and use effect, and is inconvenient to organize large-scale Production and other problems, to achieve the effect of enriching thickening, reducing critical association concentration, and improving integrity

Active Publication Date: 2021-06-15
WUHAN TEXTILE UNIV +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation of semi-blocked monofunctional monomers, due to the lack of selectivity in the reaction between groups, it is difficult to control the structure of the product
At the same time, due to the unavoidable presence of a certain amount of cetyl alcohol double-capped structure and free cetyl alcohol in the product structure, the thickener cannot be fully dissolved or dispersed in the thickening system, which affects product quality and use. Effect
In addition, the reaction system is very viscous in the middle and later stages of the reaction, and the reaction is difficult to control, making it difficult to organize large-scale 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
  • Polyurethane thickener compound with mixed side long-chain alkyl group, and preparation method thereof
  • Polyurethane thickener compound with mixed side long-chain alkyl group, and preparation method thereof
  • Polyurethane thickener compound with mixed side long-chain alkyl group, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0057] One aspect of the present invention provides a method for preparing a polyurethane thickener compound with mixed side long-chain alkyl groups, the method comprising the following steps

[0058] (1) Preparation of raw materials: the raw materials contain polymerized monomers, solvents and auxiliary agents; wherein, the polymerized monomers include diisocyanate, polyethylene glycol, single-ended dihydroxy aliphatic diols and higher aliphatic alcohols; the solvent is an organic solvent; The auxiliary agent is a polymerization catalyst;

[0059] Diisocyanate is a kind of in isophorone diisocyanate and hexamethylene diisocyanate;

[0060] Polyethylene glycol is one of the polyethylene glycols with a moisture content not higher than 2‰ and a molecular weight of 4000-8000;

[0061] The single-ended dihydroxy fatty diol is 1,2-C 6～12 2 of diols, and 2 of 1,2-C 6～12 The difference in carbon chain length between diols is 3 to 6, two kinds of 1,2-C 6～12 The molar ratio between...

Embodiment 1

[0104] The preparation process of the high-concentration polyurethane thickener S1 with mixed side long-chain alkyl groups is as follows:

[0105] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0106] (2) Prepolymerization: Polyethylene glycol is prepolymerized with diisocyanate, a polymerization catalyst and some organic solvents to prepare a polyurethane thickener prepolymer with mixed side long-chain alkyl groups;

[0107] (2.1) Put diisocyanate and a total amount of 25% organic solvent into the reactor, and heat up to 72°C;

[0108] (2.2) Within 50 minutes, add polyethylene glycol slowly and keep stirring, and control the temperature of the reaction system to 72°C;

[0109] (2.3) After maintaining the temperature of the reaction system at 72°C and keeping it warm for 50 minutes, put in the polymerization catalyst at a constant speed within 12 minutes;

[0110] (2.4) Raise the temperature and contr...

Embodiment 2

[0142] The preparation process of the high-concentration polyurethane thickener S1 with mixed side long-chain alkyl groups is the same as in Example 1.

[0143] The preparation process of the high-concentration polyurethane thickener S3 with mixed side long-chain alkyl groups is as follows:

[0144] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0145] (2) Prepolymerization: Polyethylene glycol is prepolymerized with diisocyanate, a polymerization catalyst and some organic solvents to prepare a polyurethane thickener prepolymer with mixed side long-chain alkyl groups;

[0146] (2.1) Put diisocyanate and a total amount of 30% organic solvent into the reactor, and heat up to 78°C;

[0147] (2.2) Within 58 minutes, add polyethylene glycol slowly and keep stirring, and control the temperature of the reaction system to be 78°C;

[0148] (2.3) After maintaining the temperature of the reaction system at 78°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

No PUM Login to View More

Abstract

The invention relates to an associated polyurethane thickening agent used in the processing fields of water-based coatings, textile printing, water-based resin coatings and the like, and concretely relates to a polyurethane thickener compound with a mixed side long-chain alkyl group, and a preparation method thereof. The method comprises the following steps: preparing raw materials; performing prepolymerization; performing chain extension; blocking the end; performing concentration; and compounding. The method is high in controllability and smooth in process. According to the invention, different distribution of long-chain alkyl groups with different carbon lengths is realized in the lateral direction of a polyether polyurethane high-molecular skeleton, and the effective thickening molecular structure is also diversified; ad through product compounding, the side chain structure of the thickener molecule is richer. By inhibiting intramolecular association of the thickener and strengthening intermolecular association of the thickener, the thickening capacity, rheological property and washability of the thickener are improved.

Description

technical field [0001] The invention relates to an associative polyurethane thickener used in the processing fields of water-based paint, textile printing, water-based resin coating, etc., in particular to a polyurethane thickener compound with mixed side long-chain alkyl groups and a preparation method thereof. Background technique [0002] Associative polyurethane thickeners are widely used in water-based coatings, textile printing, water-based resin coatings and other fields due to their advantages of good leveling, strong viscosity stability, and good overall hand feeling. However, associative polyurethane thickeners have ① the enhancement of the intermolecular association ability of the thickener is also accompanied by the obvious intramolecular association, resulting in a significant deterioration of its thickening ability, washability, thickening speed, etc.; ② The thickening system is prone to problems caused by water analysis; ③The association structure between the ...

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): C08G18/75C08G18/73C08G18/48C08G18/10C08G18/28C09D7/43D06P1/52
CPCC08G18/755C08G18/73C08G18/4833C08G18/10C08G18/2825C09D7/43D06P1/5285C08G18/3206C08G18/2805
Inventor 权衡王佳徐振明刘王辉倪丽杰卫增峰刘小川肖力
Owner WUHAN TEXTILE UNIV
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