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11.发明授权
公开(公告)号：EP0521896B1
公开(公告)日：1993-12-15
申请号：EP91905635.8
申请日：1991-02-26
摘要： A method of making a photographic paper support having improved raw stock keeping characteristics by an internal acid sizing step and an external alkaline sizing step to achieve a water extractable pH of from 6 to 9.5.
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12.发明公开
公开(公告)号：EP0521896A1
公开(公告)日：1993-01-13
申请号：EP91905635.0
申请日：1991-02-26
摘要： Procédé de fabrication d'un support en papier photographique présentant des caractéristiques de conservation de papier support améliorées, comprenant une étape d'application d'acide interne ainsi qu'une étape d'application alcaline externe afin d'obtenir un pH pouvant être extrait à l'eau compris entre 6 et 9,5.
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公开(公告)号：EP3417104A1
公开(公告)日：2018-12-26
申请号：EP16708288.2
申请日：2016-02-16
申请人： Kemira OYJ
CPC分类号： D21H17/375 , D21H17/06 , D21H17/56 , D21H17/64 , D21H17/65 , D21H21/20 , D21H23/10 , D21H23/16 , D21H23/22 , D21H23/66
摘要： A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.
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公开(公告)号：EP2898141B1
公开(公告)日：2018-05-23
申请号：EP12885040.1
申请日：2012-09-20
发明人： LOCKHART, James M. , WEARING, James T. , GULAMHUSEIN, Ali , HOBENSHIELD, Evan J. , DEVRIES, Durk
摘要： A method and apparatus for contacting and reacting fine cellulosic material with acid to produce partly-hydrolyzed cellulose, in which the cellulose is compressed to form higher density material, resulting in reduced consumption of acid and increased uniformity of reaction times. Cellulosic material, such as ground wood pulp, is compressed to reduce the interstitial spaces therein. The compressed material is contacted with an acid, such as sulfuric acid, which is allowed to wick into the interstitial spaces and react with the cellulose to produce partly-hydrolyzed cellulose.
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公开(公告)号：EP3177769A4
公开(公告)日：2018-04-04
申请号：EP15819737
申请日：2015-07-07
申请人： STORA ENSO OYJ
发明人： HÅKANSSON PHILIP
IPC分类号： D21H17/69 , C09C1/02 , D21H17/65 , D21H17/66 , D21H17/67 , D21H17/68 , D21H23/04 , D21H23/76
CPC分类号： D21H17/68 , C09C1/0081 , C09C1/021 , C09C1/28 , C09C1/30 , D21H17/29 , D21H17/44 , D21H17/65 , D21H17/66 , D21H17/675 , D21H21/10 , D21H23/04
摘要： The invention relates to a method of making paper or paperboard comprising the steps of; a. providing a stock suspension; b. adding a mixture of alkali-metal silicate and precipitated calcium carbonate to said stock suspension; c. adding an acidic media to said stock suspension substantially directly before and/or after step (b) d. forming a web of the stock suspension obtained in step (d) e. drying said web. The addition of a mixture of alkali-metal silicate and PCC and of an acidic media to the stock suspension in accordance with the invention improves the bonding between the fibers and the filler (PCC), whereby problems related to dusting is decreased. Moreover, the method enables the addition of a higher amount of fillers to the paper without substantially affecting the strength.
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公开(公告)号：EP3169844A1
公开(公告)日：2017-05-24
申请号：EP15744621.2
申请日：2015-07-10
申请人： Kemira OYJ
CPC分类号： D21C3/226 , D21H17/65 , D21H17/675 , D21H21/02 , D21H27/004
摘要： The present invention provides a method for preventing or decreasing scale formation on process surfaces in manufacturing process of paper, board or the like, in which method performic acid is used as an antiscaling agent.
摘要翻译： 本发明提供了一种防止或减少在造纸，纸板等的制造过程中在工艺表面上形成结垢的方法，其中使用过甲酸作为防垢剂。
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公开(公告)号：EP3044364A1
公开(公告)日：2016-07-20
申请号：EP14777538.1
申请日：2014-09-08
发明人： SCHULTE, Johann , HÜPPERLING, Frank , DÖRK, Markus
CPC分类号： D21H17/37 , D21C3/02 , D21C3/20 , D21C3/222 , D21H17/375 , D21H17/64 , D21H17/65 , D21H17/70 , D21H21/10
摘要： The invention relates to a method for producing paper with at least one fibrous material, a polymer, water and calcium oxide and/or calcium hydroxide, comprising the steps of disintegrating the fibrous material with water in a pulper for producing a fibrous material suspension and transferring the fibrous material suspension into a vat. The method is characterised in that in the disintegration of the fibrous material in the pulper calcium oxide and/or calcium hydroxide having a proportion of active substance between 0.1 kg per tonne of oven-dry fibrous material and 50 kg per tonne of fibrous material for setting of a pH value between 9 and 12 is added to the fibrous material suspension, and in the vat an acrylamide copolymer having a proportion of active substance between 0.1 kg per tonne of oven-dry fibrous material and 10 kg per tonne of fibrous material is added.
摘要翻译： 本发明涉及一种生产具有至少一种纤维材料，聚合物，水和氧化钙和/或氢氧化钙的纸的方法，包括以下步骤：在碎浆机中用水分解纤维材料以产生纤维材料悬浮液和转移 将纤维材料悬浮于大桶中。 该方法的特征在于，在碎浆机中的纤维材料的分解中，一氧化钙和/或氢氧化钙的活性物质比例为0.1kg /烘干纤维材料，每吨纤维材料为50kg，用于固化 在纤维材料悬浮液中加入pH值介于9和12之间，在桶中加入活性物质比例为0.1kg /烘干纤维材料和10kg /吨纤维材料的丙烯酰胺共聚物 。
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18.发明公开PROCESS FOR MAKING PARTLY-HYDROLYZED CELLULOSE USING COMPRESSED CELLULOSIC MATERIALS 有权用于生产部分水解纤维素使用压缩的纤维素物质
公开(公告)号：EP2898141A1
公开(公告)日：2015-07-29
申请号：EP12885040.1
申请日：2012-09-20
发明人： LOCKHART, James M. , WEARING, James T. , GULAMHUSEIN, Ali , HOBENSHIELD, Evan J. , DEVRIES, Durk
摘要： A method and apparatus for contacting and reacting fine cellulosic material with acid to produce partly-hydrolyzed cellulose, in which the cellulose is compressed to form higher density material, resulting in reduced consumption of acid and increased uniformity of reaction times. Cellulosic material, such as ground wood pulp, is compressed to reduce the interstitial spaces therein. The compressed material is contacted with an acid, such as sulfuric acid, which is allowed to wick into the interstitial spaces and react with the cellulose to produce partly-hydrolyzed cellulose.
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公开(公告)号：EP2527531B1
公开(公告)日：2014-07-30
申请号：EP12002877.4
申请日：2006-05-02
发明人： Tan, Zheng , Lorenzoni, Damaris , Goyal, Gopal , Yang, Sen
CPC分类号： D21C9/163 , A01N25/10 , A01N59/00 , A01N59/16 , A01N59/20 , D21C9/002 , D21C9/004 , D21H11/04 , D21H11/20 , D21H17/65 , D21H17/66 , D21H21/32 , D21H27/007 , D21H27/30 , Y10T428/31971
摘要： A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than about 17 cp and having reducing functional groups selected from the group consisting of aldehyde and aldehyde type functional groups at the C6 and CI positions but predominating at the CI position.
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