Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRODUCTION METHOD FOR WATER-ABSORBING RESIN POWDER, AND PRODUCTION DEVICE FOR SAME
Document Type and Number:
WIPO Patent Application WO/2018/092864
Kind Code:
A1
Abstract:
This production method includes: a gel pulverization step in which a hydrous gel-like crosslinked polymer is pulverized to obtain a particulate hydrous gel-like crosslinked polymer; a heating and drying step in which a continuous agitation dryer is used to obtain a granular dried substance from the particulate hydrous gel-like crosslinked polymer; a post-crosslinking step in which the particulate hydrous gel-like crosslinked polymer or the granular dried substance is post-crosslinked; and a granulation step in which the grain size of the granular dried substance or the post-crosslinked granular dried substance is adjusted to obtain a water-absorbing resin powder. The particulate hydrous gel-like crosslinked polymer includes a gel plasticizer. The gel temperature of the particulate hydrous gel-like crosslinked polymer including the gel plasticizer is 50˚C or higher as measured using a contact thermometer. In this production method, the granular dried substance or the post-crosslinked granular dried substance is force cooled before the granulation step.

More Like This:
JPH04306242CROSSLINKED PVC PRODUCT AND ITS PRODUCTION
WO/2021/015363GRAPHITE SHEET AND ELECTRONIC DEVICE COMPRISING SAME
JP4694140Manufacturing method of water-absorbent resin
Inventors:
WATABE HIROYASU
SATO MAI
WAKABAYASHI RYOTA
SHOBO YOSHIHIRO
KATSUBE SHIN-YA
IMURA MOTOHIRO
HONDA KOJI
ADACHI YOSHIFUMI
YORINO TSUYOSHI
INOUE MASAHUMI
ARAKE TOMOYUKI
HAYASHI HIROKI
KATAKURA NAOKI
FUJINO SHIN-ICHI
ISHIZAKI KUNIHIKO
SHUTO TOKIO
Application Number:
PCT/JP2017/041372
Publication Date:
May 24, 2018
Filing Date:
November 16, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
International Classes:
C08J3/24; F26B17/30
Domestic Patent References:
WO2009113678A12009-09-17
WO2009113679A12009-09-17
WO2009113673A12009-09-17
WO2013146699A12013-10-03
WO2014141764A12014-09-18
WO2007104673A22007-09-20
WO2008037675A12008-04-03
WO2008037672A12008-04-03
WO2011034147A12011-03-24
WO2011034146A12011-03-24
WO2011115221A12011-09-22
WO2011115216A12011-09-22
WO2014154522A12014-10-02
WO2006100300A12006-09-28
WO2011090129A12011-07-28
WO2015074966A12015-05-28
WO2011104152A12011-09-01
WO2016128337A12016-08-18
WO2014044780A12014-03-27
WO2013104479A12013-07-18
WO2009028568A12009-03-05
WO2015072536A12015-05-21
WO2014033083A12014-03-06
WO2007057350A12007-05-24
WO2016204302A12016-12-22
WO2011126079A12011-10-13
WO2006103227A12006-10-05
WO2015129917A12015-09-03
WO2009028568A12009-03-05
Foreign References:
JP2016216713A2016-12-22
JPH11292919A1999-10-26
JPH08134134A1996-05-28
JP2005247931A2005-09-15
JPH0655070A1994-03-01
JP2002121291A2002-04-23
EP1130045A22001-09-05
EP1800740A22007-06-27
JPH08134134A1996-05-28
JP2007071415A2007-03-22
JP2005247931A2005-09-15
JP2003012812A2003-01-15
US5005771A1991-04-09
JP2016216713A2016-12-22
JP2017022605W2017-06-20
EP0948997A21999-10-13
EP0289333A21988-11-02
EP0574248A21993-12-15
US4497930A1985-02-05
US5380808A1995-01-10
EP1367081A12003-12-03
JP2012041439A2012-03-01
US7638570B22009-12-29
US7265190B22007-09-04
US4893999A1990-01-16
US6241928B12001-06-05
US20050215734A12005-09-29
US6987151B22006-01-17
US6710141B12004-03-23
JP2016223654A2016-12-28
JP2017184283A2017-10-05
JP2007077393A2007-03-29
EP1754725A22007-02-21
EP2189478A12010-05-26
JP2016506982A2016-03-07
EP2950829A12015-12-09
KR20150141425A2015-12-18
Other References:
MODERN SUPERABSORBENTS POLYMER CHEMISTRY, 1998, pages 69 - 103
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: PRODUCTION METHOD FOR WATER-ABSORBING RESIN POWDER, AND DEVICE AND METHOD FOR DRYING PARTICULATE HYD...

Next Patent: NETWORKED ROBOT DEVICE