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Patent Searching and Data


Title:
METHOD FOR PRODUCING LIQUID COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2019/054341
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method by which a liquid composition, which does not cause coating unevenness or nozzle clogging and which does not contain eluted substances that cause a decrease in luminance life, can be produced with high productivity. The present invention relates to a method for producing a liquid composition containing a phosphorescent material and an organic solvent. The method includes a step of preparing a mixed liquid by dissolving the phosphorescent material in the organic solvent, and a step of filtering the mixed liquid obtained in the previous step using a filtration device. The filtration device comprises a housing or holder, a fluororesin filter, and a filter support member. The material of the sections of the housing and holder that come into contact with the mixed liquid is a metal only or a mixture of a metal and at least one type of material selected from the group consisting of a glass, a fluororesin, polyethylene that does not contain a phosphorus-based antioxidant, and polyethylene that does not contain an oxidized form of a phosphorus-based antioxidant. The material of the sections of the filter support member that come into contact with the mixed liquid is at least one type of material selected from the group consisting of a metal, a glass, a fluororesin, polyethylene that does not contain a phosphorus-based antioxidant, and polyethylene that does not contain an oxidized form of a phosphorus-based antioxidant.

Inventors:
YOSHIDA SADAMU (JP)
KAKIMOTO HIDENOBU (JP)
MIYAMOTO HISAAKI (JP)
UEOKA TAKAHIRO (JP)
IWATA NOBUCHIKA (JP)
Application Number:
PCT/JP2018/033514
Publication Date:
March 21, 2019
Filing Date:
September 10, 2018
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C09K11/06; B01D61/20; H01L51/50; H05B33/10
Domestic Patent References:
WO2016136008A12016-09-01
WO2016043231A12016-03-24
WO2007063754A12007-06-07
WO2008056746A12008-05-15
WO2011032686A12011-03-24
WO2012096263A12012-07-19
WO2009131255A12009-10-29
WO2010136109A12010-12-02
Foreign References:
JP2012043912A2012-03-01
JP2015063662A2015-04-09
JP2015099679A2015-05-28
JP2008200925A2008-09-04
JP2006004907A2006-01-05
JP2002305095A2002-10-18
JP2002066228A2002-03-05
JPH0932678A1997-02-04
JPS59173106A1984-10-01
JP2009249400A2009-10-29
JP2013026164A2013-02-04
JP2016029635A2016-03-03
JP2009227663A2009-10-08
JP2010275255A2010-12-09
JP2015063662A2015-04-09
JP2012036388A2012-02-23
JP2013047315A2013-03-07
JP2010189630A2010-09-02
Other References:
See also references of EP 3626802A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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