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61.
公开(公告)号:EP3481997A1
公开(公告)日:2019-05-15
申请号:EP17827080.7
申请日:2017-07-03
Applicant: Stora Enso Oyj
Inventor: BACKFOLK, Kaj , HEISKANEN, Isto , SAUKKONEN, Esa , PARTTI-PELLINEN, Kirsi , SIITONEN, Simo
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62.
公开(公告)号:EP3478752A1
公开(公告)日:2019-05-08
申请号:EP17819455.1
申请日:2017-06-27
Applicant: Stora Enso Oyj
Inventor: HEISKANEN, Isto , SAUKKONEN, Esa , BACKFOLK, Kaj
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公开(公告)号:EP2571771B1
公开(公告)日:2019-03-27
申请号:EP11783157.8
申请日:2011-05-19
Applicant: Stora Enso Oyj
Inventor: HEISKANEN, Isto , RÄISÄNEN, Timo , RÄSÄNEN, Jari , LAMMI, Titta
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64.
公开(公告)号:EP2917402B1
公开(公告)日:2019-03-20
申请号:EP13853320.3
申请日:2013-11-06
Applicant: Stora Enso Oyj
Inventor: AXRUP, Lars , SAXELL, Heidi , JOKELA, Veikko , KASTINEN, Henri , KAUPPI, Anna , BACKFOLK, Kaj , RUOHONIEMI, Nina , LAITINEN, Risto , HEISKANEN, Isto , LAUKALA, Teija
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公开(公告)号:EP2516156B1
公开(公告)日:2019-03-20
申请号:EP10839891.8
申请日:2010-12-20
Applicant: Stora Enso Oyj
Inventor: AXRUP, Lars , HEISKANEN, Isto , BACKFOLK, Kaj
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公开(公告)号:EP3449056A2
公开(公告)日:2019-03-06
申请号:EP17788916.9
申请日:2017-04-26
Applicant: Stora Enso Oyj
Inventor: BACKFOLK, Kaj , HEISKANEN, Isto , SAUKKONEN, Esa , KANKKUNEN, Jukka
IPC: D21H19/10
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67.
公开(公告)号:EP3433332A1
公开(公告)日:2019-01-30
申请号:EP17769539.2
申请日:2017-03-20
Applicant: Stora Enso Oyj
Inventor: ZAFAR, Ashar , ARESKOGH, Dimitri , EKSTRÖM, Jesper
IPC: C09J197/00 , C07G1/00 , C08H7/00 , C08L97/00 , C09D197/02 , C09J161/00
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公开(公告)号:EP3423629A1
公开(公告)日:2019-01-09
申请号:EP17709193.1
申请日:2017-02-22
Applicant: Stora Enso Oyj
Inventor: AXRUP, Lars , GULLANDER, Kristina
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公开(公告)号:EP3066258B1
公开(公告)日:2019-01-09
申请号:EP14860160.2
申请日:2014-11-05
Applicant: Stora Enso Oyj
Inventor: NOUSIAINEN, Laura , KOSTIAINEN, Petteri , SAARINEN, Petteri , NORDSTRÖM, Jan-Erik
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公开(公告)号:EP2831123B1
公开(公告)日:2018-09-19
申请号:EP13768365.2
申请日:2013-03-26
Applicant: UPM-Kymmene Corporation , Stora Enso Oyj
Inventor: KROGERUS, Björn , FUHRMANN, Agneta , LAINE, Christiane
CPC classification number: D21H21/32 , A23L29/206 , C01D1/04 , C01F11/18 , C08B37/0057 , C08B37/143 , D21C3/02 , D21C9/10 , D21H13/02 , D21H17/64
Abstract: A method and a system for preparing xylan and calcium carbonate, xylan, a cellulose fibre, and precipitated calcium carbonate. The method includes extracting xylan from cellulose fibres with sodium hydroxide to form a mixture containing cellulose fibres and an extract solution containing xylan; removing the cellulose fibres from the mixture to isolate the extract solution; adding carbon dioxide to the isolated extract solution to form a mixture containing a liquid brightener and precipitated xylan; separating the brightener from the mixture to isolate the precipitated xylan; adding calcium hydroxide to the separated brightener to form a mixture of precipitated calcium carbonate and liquid sodium hydroxide; and removing the sodium hydroxide from the mixture to isolate the calcium carbonate.
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