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公开(公告)号：US20140158315A1
公开(公告)日：2014-06-12
申请号：US14103905
申请日：2013-12-12
申请人： BASF SE
发明人： Stefan Erren , Dieter Schönhaber , Martin Schachtl
IPC分类号： D21C3/04
摘要： A method of producing cellulose from lignocellulosic material by sulfite digestion or sulfate digestion in the presence of a salt of dithionous acid comprises using the salt of dithionous acid in an amount from 0.1 to 4.0 wt. % based on the amount of oven-dry lignocellulosic material.
摘要翻译： 在二硫酸盐存在下，通过亚硫酸盐消化或硫酸盐消化从木质纤维素材料生产纤维素的方法包括使用0.1至4.0重量％的二硫酸盐。 基于烘干木质纤维素材料的量的％。
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公开(公告)号：US11015290B2
公开(公告)日：2021-05-25
申请号：US15128755
申请日：2015-03-13
申请人： BASF SE
摘要： In a process for producing bleached mechanical woodpulp, said process comprising the steps of a) delaminating comparatively large particles of wood, which have optionally been pretreated with chemicals and/or water, into modified particles of wood, b) grinding the modified particles of wood from a) in one or more refiners, c) optionally treating the stalk obtained in step b) with oxidative or reductive bleaching agents, a composition Z is present during step a) and/or step b), said composition Z comprising one or more of the following components (Z1) to (Z3): a salt of dithionous acid H2S2O4 (Z1), a dithionous acid or dithionous acid derivative generator compound (Z2), a salt of sulfurous acid (sulfite) plus sodium tetraborohydride (Z3) and also optionally additives (Z4).
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公开(公告)号：US09121135B2
公开(公告)日：2015-09-01
申请号：US14103905
申请日：2013-12-12
申请人： BASF SE
发明人： Stefan Erren , Dieter Schönhaber , Martin Schachtl
摘要： A method of producing cellulose from lignocellulosic material by sulfite digestion or sulfate digestion in the presence of a salt of dithionous acid comprises using the salt of dithionous acid in an amount from 0.1 to 4.0 wt. % based on the amount of oven-dry lignocellulosic material.
摘要翻译： 在二硫酸盐存在下，通过亚硫酸盐消化或硫酸盐消化从木质纤维素材料生产纤维素的方法包括使用0.1至4.0重量％的二硫酸盐。 基于烘干木质纤维素材料的量的％。
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公开(公告)号：US11725338B2
公开(公告)日：2023-08-15
申请号：US17307060
申请日：2021-05-04
申请人： BASF SE
CPC分类号： D21B1/021 , D21B1/14 , D21C9/1005 , D21C9/1057 , D21C9/1063 , D21C9/1089
摘要： In a process for producing bleached mechanical woodpulp, said process comprising the steps of
a) delaminating comparatively large particles of wood, which have optionally been pretreated with chemicals and/or water, into modified particles of wood,
b) grinding the modified particles of wood from a) in one or more refiners,
c) optionally treating the stalk obtained in step b) with oxidative or reductive bleaching agents, a composition Z is present during step a) and/or step b), said composition Z comprising one or more of the following components (Z1) to (Z3): a salt of dithionous acid H2S2O4 (Z1), a dithionous acid or dithionous acid derivative generator compound (Z2), a salt of sulfurous acid (sulfite) plus sodium tetraborohydride (Z3) and also optionally additives (Z4).-
公开(公告)号：US11001439B2
公开(公告)日：2021-05-11
申请号：US15744130
申请日：2016-07-08
申请人： BASF SE
摘要： The present invention relates to a container for holding bulk material, having a closable inlet for the bulk material in the upper closure of the container, a cross-sectional geometry narrowing in the outlet direction for the bulk material, an outlet tube for the bulk material arranged subsequently in the outlet direction, a first reversible mechanical closure device (A), which is arranged in the transition region from the container body to the outlet tube or in the outlet tube itself and, by opening, releases the bulk material from the interior of the container, and a second closure device (B) which reversibly closes the mouth of the outlet tube, the second closure device being a cover which is pressed flush onto the mouth of the outlet tube by means of a closure device, there being a seal which seals the outlet tube in a gas- and liquid-tight fashion from the external environment at least on the contact surface of the cover with the mouth degree of the outlet tube, wherein the cover is screwed onto or is pressed with a clamping ring or a bayonet closure onto the mouth of the outlet tube.
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