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

METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL and method for increasing the content ratio of the compound

A technology of perfluoropolyether and manufacturing method, which is applied in chemical instruments and methods, separation methods, chemical/physical processes, etc., to achieve the effect of reducing the amount of use and the impact of environmental load.

Active Publication Date: 2015-10-14
SHIN ETSU CHEM IND CO LTD
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of this method, a large amount of non-functional polymers are also produced at the same time

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
  • METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL and method for increasing the content ratio of the compound
  • METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL and method for increasing the content ratio of the compound
  • METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL and method for increasing the content ratio of the compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] Make 10g of composition F60 in supercritical carbon dioxide as mobile phase, and filled with silica gel 60-NH 2 (manufactured by Kanto Chemical Co., Ltd., particle size: 40 μm to 50 μm, weakly alkaline: pH 9.5 (25° C., value in the state of 10% by weight aqueous suspension), dry-filled) in a 25 mL high-pressure vessel. The flow rate of the mobile phase was 5ml / min, and the temperature was 40°C. Change the pressure from 11MPa to 25MPa. In detail, first flow carbon dioxide adjusted to a supercritical state at 40°C and 11 MPa, fractionate components for 60 minutes at a mobile phase pressure of 11 MPa, then set the mobile phase pressure to 15 MPa and fractionate The components were separated for 60 minutes, then the pressure of the mobile phase was set to 25 MPa and the components were fractionated for 60 minutes. The ratio of the components contained in each component is shown in Table 2 below. The composition ratio is utilized 19 F-NMR to confirm.

[0135] [Table 2] ...

Embodiment 2

[0138] Make 10g of composition F70 in supercritical carbon dioxide as mobile phase, and filled with silica gel 60-NH 2 (manufactured by Kanto Chemical Co., Ltd., particle size: 40 μm to 50 μm, weakly alkaline: pH 9.5 (25° C., value in the state of 10% by weight aqueous suspension), dry-filled) in a 25 mL high-pressure vessel. The flow rate of the mobile phase was 5ml / min, and the temperature was 40°C. Change the pressure from 11MPa to 25MPa. Specifically, first, carbon dioxide adjusted to a supercritical state was passed through at 40° C. and 11 MPa, fractionated for 60 minutes at a mobile phase pressure of 11 MPa, and then the mobile phase pressure was set to 15 MPa and separated. The components were taken for 60 minutes, then the pressure of the mobile phase was set to 25 MPa and the components were taken for 60 minutes. The ratio of the components contained in each component is shown in Table 3 below. The composition ratio is utilized 19 F-NMR to confirm. In addition, ...

Embodiment 3

[0142] Make 10g of composition F80 in supercritical carbon dioxide as mobile phase, and filled with silica gel 60-NH 2 (manufactured by Kanto Chemical Co., Ltd., particle size: 40 μm to 50 μm, weakly alkaline: pH 9.5 (25° C., value in the state of 10% by weight aqueous suspension), dry-filled) in a 25 mL high-pressure vessel. The flow rate of the mobile phase was 5ml / min, and the temperature was 40°C. Change the pressure from 11MPa to 25MPa. In detail, first flow carbon dioxide adjusted to a supercritical state at 40°C and 11 MPa, fractionate components for 60 minutes at a mobile phase pressure of 11 MPa, then set the mobile phase pressure to 15 MPa and fractionate The components were separated for 60 minutes, then the pressure of the mobile phase was set to 25 MPa and the components were fractionated for 60 minutes. The ratio of the components contained in each component is shown in Table 4 below. The composition ratio is utilized 19 F-NMR to confirm. In addition, the co...

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

An object of the present invention is to provide a method for efficiently and highly selectively preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. The present invention provides a method for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal and perfluoropolyether having hydroxyl groups at both terminals in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. Further, present invention provides for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal, perfluoropolyether having hydroxyl groups at both terminals and perfluoropolyether having no hydroxyl group at any terminal perfluoropolyether, in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio.

Description

technical field [0001] The present invention relates to a method for producing a composition containing a single-terminal hydroxyl-containing perfluoropolyether compound at a high concentration and a method for increasing the content of the compound. Background technique [0002] Perfluoropolyether compounds having functional groups at one end (hereinafter referred to as single-terminal derivatives), or perfluoropolyether compounds having functional groups at both ends (hereinafter referred to as both-terminal derivatives) (hereinafter collectively referred to as Functional polymers) are often used as precursors for various derivatives such as surfactants or surface treatment agents. For example, precursors of surfactants useful for polymerization of polymers include acrylic acid derivatives, amine derivatives, and isocyanate derivatives of the above-mentioned functional polymers. In addition, examples of the precursor of the surface treatment agent include alkoxy derivativ...

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): B01D15/08C08G65/00
CPCC08L71/00B01D15/12C08G65/007C08G65/30C08G65/46Y02P20/54
Inventor 山根祐治松田高至小池则之
Owner SHIN ETSU CHEM IND CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com