Title:
METHOD FOR PRODUCING DISPERSION LIQUID, DISPERSION LIQUID, AND METHOD FOR PRODUCING LAMINATE
Document Type and Number:
WIPO Patent Application WO/2023/238506
Kind Code:
A1
Abstract:
Provided are: a method for producing a dispersion liquid that contains a tetrafluoroethylene polymer, has exceptional properties such as heat resistance and electrical characteristics (low linear expansion coefficient, low dielectric constant, and low dielectric loss tangent), is capable of forming a molded article having an exceptional surface appearance, especially in terms of surface smoothness, and has exceptional handling properties and dispersion stability with suppressed formation of coarse particles; and such a dispersion liquid. This method for producing a dispersion liquid includes treating a liquid composition that has a liquid density of 1.15-1.5 g/cm3 and contains a liquid dispersion medium and particles of a tetrafluoroethylene polymer by using a wet bead mill to obtain a dispersion liquid containing the particles of the tetrafluoroethylene polymer.
Inventors:
FUJIOKA OSAMU (JP)
ITO AYA (JP)
YUKI SOTA (JP)
KASAI WATARU (JP)
SEKIKAWA KENTA (JP)
ITO AYA (JP)
YUKI SOTA (JP)
KASAI WATARU (JP)
SEKIKAWA KENTA (JP)
Application Number:
PCT/JP2023/015140
Publication Date:
December 14, 2023
Filing Date:
April 14, 2023
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
C08J3/02; B32B27/30; C08J7/04; C08L27/18
Domestic Patent References:
| WO2019163525A1 | 2019-08-29 | |||
| WO2016159102A1 | 2016-10-06 |
Foreign References:
| JP2017088861A | 2017-05-25 | |||
| JP2017193655A | 2017-10-26 | |||
| JP2021004322A | 2021-01-14 | |||
| JP2016204608A | 2016-12-08 | |||
| JP2015199903A | 2015-11-12 |
Other References:
JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY: "PLASTICS PROCESSING DATABOOK", 29 January 2002, NIKKAN KOGYO SHIMBUN , JP , ISBN: 4-526-04870-4, article EDITED BY JAPAN SOCIETY FOR PLASTICITY PROCESSING: "Polytetrafluoroethylene (specific gravity)", pages: 2 - 3, XP009551256
ANONYMOUS: "S-LEC B BL-10", MATERIAL SAFTY DATA SHEET, VERSION 8.10, SEKISUI, 14 April 2011 (2011-04-14), pages 1 - 5, XP093114833
ANONYMOUS: "Methyl ethyl ketone", MATERIAL SAFETY DATA SHEET, 25 February 2006 (2006-02-25), XP093114835, Retrieved from the Internet
"3M Dyneon PTFE Micropowders", 31 December 2019 (2019-12-31), Retrieved from the Internet [retrieved on 20230510]
"Fluorocoating agents SFCOAT", 15 April 2018 (2018-04-15), Retrieved from the Internet
ANONYMOUS: "Isopropyl alcohol", MATERIAL SAFETY DATA SHEET, 19 February 2006 (2006-02-19), XP093114844, Retrieved from the Internet [retrieved on 20231222]
ANONYMOUS: "400°C HEAT RESISTANT PTFE MICROPOWDER KT/KTL SERIES", CATALOG PTFE KTKTL, 30 June 2022 (2022-06-30), pages 1 - 12, XP093114845
ANONYMOUS: "ethyleneglycolmonobutylether", SAFETY DATA SHEET, 1 March 2017 (2017-03-01), pages 1 - 9, XP093114854
ANONYMOUS: "N-Methyl-2-pyrrolidone NMP | Product Information | Mitsubishi Chemical Corporation", 13 September 2017 (2017-09-13), XP093114860, Retrieved from the Internet
ANONYMOUS: "S-LEC B BL-10", MATERIAL SAFTY DATA SHEET, VERSION 8.10, SEKISUI, 14 April 2011 (2011-04-14), pages 1 - 5, XP093114833
ANONYMOUS: "Methyl ethyl ketone", MATERIAL SAFETY DATA SHEET, 25 February 2006 (2006-02-25), XP093114835, Retrieved from the Internet
"3M Dyneon PTFE Micropowders", 31 December 2019 (2019-12-31), Retrieved from the Internet
"Fluorocoating agents SFCOAT", 15 April 2018 (2018-04-15), Retrieved from the Internet
ANONYMOUS: "Isopropyl alcohol", MATERIAL SAFETY DATA SHEET, 19 February 2006 (2006-02-19), XP093114844, Retrieved from the Internet
ANONYMOUS: "400°C HEAT RESISTANT PTFE MICROPOWDER KT/KTL SERIES", CATALOG PTFE KTKTL, 30 June 2022 (2022-06-30), pages 1 - 12, XP093114845
ANONYMOUS: "ethyleneglycolmonobutylether", SAFETY DATA SHEET, 1 March 2017 (2017-03-01), pages 1 - 9, XP093114854
ANONYMOUS: "N-Methyl-2-pyrrolidone NMP | Product Information | Mitsubishi Chemical Corporation", 13 September 2017 (2017-09-13), XP093114860, Retrieved from the Internet
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
Download PDF: