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

Fluorine-modified anionic polyurethane emulsion and preparation method thereof

A polyurethane emulsion and anion technology, applied in the direction of repelling fibers to liquids, textiles and papermaking, fiber processing, etc., can solve the problems of unstable emulsion, poor water and oil repellency, etc., and achieve less raw material consumption and cost. Low, simple process effect

Inactive Publication Date: 2019-08-23
烟台中泰新材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many manufacturers are developing water-repellent agents, but in these methods, some emulsions are unstable, some increase the hardness of fabrics, and some have poor water and oil repellent effects.

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
  • Fluorine-modified anionic polyurethane emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A fluorine-modified anionic polyurethane emulsion, in parts by weight, its raw material components include: 4,4`-diphenylmethane diisocyanate: 75 parts, polybutylene adipate: 110 parts, 2, 2-dimethylolpropionic acid: 16 parts, perfluoroalkylethanol: 18 parts, trimethylolpropane: 6.3 parts, triethylamine: 15 parts, butanone: 200 parts, deionized water: 900 parts.

[0032] The present invention also provides a preparation method for the above-mentioned fluorine-modified anionic polyurethane emulsion, comprising the steps of:

[0033] 1. Prepolymerization: Add 4,4`-diphenylmethane diisocyanate, polybutylene adipate, fluoroalcohol and cross-linking agent in 150 parts by weight of butanone solution according to the above ratio. Under the conditions, start timing when the temperature rises to 63°C, control the temperature between 63°C and 70°C, and react for 1.5 hours to form a prepolymerization solution.

[0034] 2. Chain extension: Dissolve 2,2-dimethylolpropionic acid wit...

Embodiment 2

[0045] A fluorine-modified anionic polyurethane emulsion, the emulsion raw materials and their proportioning are the same as in Example 1. The only difference is that the perfluoroalkyl alcohol in Example 2 is 10 parts by weight.

[0046] The present invention also provides a preparation method for the above-mentioned fluorine-modified anionic polyurethane emulsion, comprising the steps of:

[0047] 1. Prepolymerization: Add 4,4`-diphenylmethane diisocyanate, polybutylene adipate, fluoroalcohol, and crosslinking agent to 150 parts by weight of methyl ethyl ketone solution, under the condition of nitrogen protection, Start timing when the temperature rises to 72°C, control the temperature between 75°C and 80°C, and react for 2.5 hours to form a prepolymer solution.

[0048] 2. Chain extension: Dissolve 2,2-dimethylolpropionic acid with 50 parts by weight of methyl ethyl ketone, slowly add it to the prepolymerization solution, start timing when the temperature rises to 80°C, an...

Embodiment 3

[0053]A fluorine-modified anionic polyurethane emulsion, the emulsion raw materials and their proportioning are the same as in Example 1. The only difference is that the perfluoroalkyl alcohol in Example 2 is 14 parts by weight.

[0054] The present invention also provides a preparation method for the above-mentioned fluorine-modified anionic polyurethane emulsion, comprising the steps of:

[0055] 1. Prepolymerization: Add 4,4`-diphenylmethane diisocyanate, polybutylene adipate, fluoroalcohol, and crosslinking agent to 150 parts by weight of methyl ethyl ketone solution, under the condition of nitrogen protection, Start timing when the temperature rises to 63°C, control the temperature between 63°C and 75°C, and react for 2 hours to form a prepolymer solution.

[0056] 2. Chain extension: Dissolve 2,2-dimethylolpropionic acid with 50 parts by weight of methyl ethyl ketone, slowly add it to the prepolymerization solution, start timing when the temperature rises to 78°C, and 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 a fluorine-modified anionic polyurethane emulsion. Raw materials of the emulsion comprise, by weight, 40-80 parts of 4,4'-diphenylmethane diisocyanate, 100-120 parts of polybutylene adipate, 8-20 parts of 2,2-bis(hydroxymethyl)propionic acid, 8-25 parts of perfluoroalkylethanol, 6-8 parts of triethylamine, 6-20 parts of trimethylolpropane, 200-230 parts of butanone and 800-950 parts of deionized water. The fluorine-modified anionic polyurethane emulsion can maintain a large amount of pores in fibers and yarns in a fabric, so the fabric has good water repellency, good breathability and good moisture permeability, and the hand feeling and the style of the fabric are not affected.

Description

technical field [0001] The invention relates to the production technology of water-repellent and oil-repellent finishing of textiles, in particular to a fluorine-modified anionic polyurethane emulsion and a preparation method thereof. Background technique [0002] With the development of industry, synthetic fibers (such as polyester, nylon, etc.) are used more and more, but clothing containing synthetic fibers is prone to static electricity when worn. , and it is not easy to wash off after being stained with oily dirt. Therefore, in order to improve the performance of textiles, it is necessary to carry out water and oil repellent finishing on textiles. [0003] There is a difference between water-repellent finishing and waterproof finishing. The latter is to form a layer of air-tight film on the surface of the fabric to fill the pores of the fabric and physically block the penetration of water, but it is often air-tight and moisture-permeable, making it uncomfortable to we...

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): C08G18/76C08G18/66C08G18/42C08G18/34C08G18/32C08G18/12C08G18/28D06M15/576
CPCC08G18/12C08G18/282C08G18/3206C08G18/348C08G18/4238C08G18/6659C08G18/7671D06M15/576D06M2200/12
Inventor 陈刚
Owner 烟台中泰新材料科技有限公司
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