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1. 发明授权

US08246780B2 Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper 有权
标题翻译：提高漂白牛皮纸浆和纸张的亮度和耐黄变性的方法
公开(公告)号：US08246780B2
公开(公告)日：2012-08-21
申请号：US11387499
申请日：2006-03-23
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21H17/63 , D21H11/16
CPC分类号： D21H21/30 , D21C9/1042 , D21C9/1084 , D21H21/32
摘要： Compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method maintains and/or enhances brightness, prevent yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：确定当在造纸过程的不同阶段应用时保持和增强纸浆或纸张的亮度和改善颜色的组合物和方法。组合物和方法维持和/或增强亮度，防止变黄，并提高纸制品的性能。与荧光增白剂和/或螯合剂组合使用时，所述试剂产生之前未在纸工艺中鉴定的协同效应。

2. 发明申请

US20100224333A1 METHOD AND CHEMICAL COMPOSITION TO IMPROVE EFFICIENCY OF MECHANICAL PULP 审中-公开
标题翻译：方法和化学成分提高机械效率的效果
公开(公告)号：US20100224333A1
公开(公告)日：2010-09-09
申请号：US12400326
申请日：2009-03-09
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21B1/04 , D21C9/00 , D21C3/02 , D21C3/04 , D21C3/06 , D21C3/20
CPC分类号： D21C1/06 , D21B1/021 , D21B1/04 , D21C9/1042 , D21C9/163
摘要： The invention provides a composition of matter and a method, which enhance the process of mechanically pulping paper precursors. The composition of matter includes a small quantity of a reducing agent and a source of alkali. When added to the pulped material, e.g., wood chips, before or during mechanical pulping, the composition reduces the energy cost of the operation. In addition, not only does the composition also does not reduce the brightness of pulp, the composition can also enhance the effectiveness of subsequent bleaching processes.
摘要翻译：本发明提供一种物质组合物和一种增强机械制浆纸前体过程的方法。物质的组成包括少量还原剂和碱源。当在机械制浆之前或期间将其加入制浆材料（例如木屑）时，组合物降低了操作的能量成本。另外，该组合物不仅不会降低纸浆的亮度，还可提高后续漂白工艺的有效性。

3. 发明申请

US20060281191A1 Method for monitoring organic deposits in papermaking 审中-公开
标题翻译：造纸中有机沉积物监测方法
公开(公告)号：US20060281191A1
公开(公告)日：2006-12-14
申请号：US11148639
申请日：2005-06-09
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： G01N33/00
CPC分类号： G01N29/022 , G01N33/343 , G01N2291/02416 , G01N2291/0251 , G01N2291/0256 , G01N2291/0258 , G01N2291/0426 , Y10T436/255
摘要： A method for monitoring the deposition of organic deposits from a liquid or slurry in a papermaking process is disclosed. The method involves measuring the rate of deposition of organic deposits from the liquid or slurry of a papermaking process on to a quartz crystal microbalance having a top side in contact with the liquid or slurry and a second, bottom side isolated from the liquid or slurry. Also disclosed is a method for measuring the effectiveness of inhibitors that decrease the deposition of organic deposits in a papermaking process. The method involves monitoring the deposition of organic deposits of a liquid or slurry from a papermaking process or from a liquid or slurry that simulates a liquid or slurry found in a papermaking process. Either method comprises measuring the rate of deposition of organic deposits from the liquid or slurry on to a quartz crystal microbalance having a top side in contact with the liquid or slurry and a second, bottom side isolated from the liquid or slurry; adding an inhibitor that decreases the deposition of organic deposits to the liquid or slurry; and re-measuring the rate of deposition of organic deposits from the liquid or slurry on to the quartz crystal microbalance.
摘要翻译：公开了一种在造纸过程中监测来自液体或浆料的有机沉积物沉积的方法。该方法包括测量有机沉积物从造纸工艺的液体或浆料到具有与液体或浆料接触的顶侧的石英晶体微量天平和从液体或浆料分离的第二底部的沉积速率。还公开了一种用于测量减少造纸过程中有机沉积物沉积的抑制剂的有效性的方法。该方法包括监测来自造纸工艺或模拟在造纸过程中发现的液体或浆料的液体或浆料的液体或浆料的有机沉积物的沉积。任一种方法包括测量有机沉积物从液体或浆料沉积到具有与液体或浆料接触的顶侧的石英晶体微量天平和从液体或浆料分离的第二底部的沉积速率; 添加减少有机沉积物沉积到液体或浆液中的抑制剂; 并重新测量有机沉积物从液体或浆料沉积到石英晶体微量天平上的速率。

4. 发明申请

US20050194111A1 Methods to enhance pulp bleaching and delignification 失效
标题翻译：增强纸浆漂白和脱木质素的方法
公开(公告)号：US20050194111A1
公开(公告)日：2005-09-08
申请号：US11121217
申请日：2005-05-03
申请人： Prasad Duggirala , Sergey Shevchenko , Kristine Salmen
发明人： Prasad Duggirala , Sergey Shevchenko , Kristine Salmen
IPC分类号： D21C3/22 , D21C9/10 , D21C9/147 , D21C3/06
CPC分类号： D21C9/1042 , D21C3/22 , D21C9/147
摘要： A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed. A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and claimed.
摘要翻译：描述并要求保护包括添加有机硫化物螯合剂的化学和机械纸浆中的亮度提高方法。还描述并要求保护增加化学纸浆中脱木质素的方法，包括加入有机硫化物螯合剂。

5. 发明申请

US20120211185A1 COMPOSITIONS AND PROCESSES FOR PAPER 有权
标题翻译：纸张的组成和处理
公开(公告)号：US20120211185A1
公开(公告)日：2012-08-23
申请号：US13459321
申请日：2012-04-30
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21C9/00 , C09K11/06
CPC分类号： D21H21/30 , D21C9/1042 , D21C9/1084 , D21H21/32
摘要： Compositions and processes that enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process involving optical brighteners are identified. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：鉴定了在涉及荧光增白剂的造纸过程的不同阶段应用时增强纸浆或纸张的亮度和改善颜色的组合物和方法。与荧光增白剂和/或螯合剂组合使用时，所述试剂产生之前未在纸工艺中鉴定的协同效应。

6. 发明申请

US20070062653A1 Compositions and processes for paper production 有权
标题翻译：纸张生产的组成和过程
公开(公告)号：US20070062653A1
公开(公告)日：2007-03-22
申请号：US11387499
申请日：2006-03-23
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21H21/30 , D21C9/00
CPC分类号： D21H21/30 , D21C9/1042 , D21C9/1084 , D21H21/32
摘要： Compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method maintains and/or enhances brightness, prevent yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：确定当在造纸过程的不同阶段应用时保持和增强纸浆或纸张的亮度和改善颜色的组合物和方法。组合物和方法维持和/或增强亮度，防止变黄，并提高纸制品的性能。与荧光增白剂和/或螯合剂组合使用时，所述试剂产生之前未在纸工艺中鉴定的协同效应。

7. 发明授权

US08884049B2 Glycerol based polymer surface active chemistry and production 有权
标题翻译：甘油基聚合物表面活性化学和生产
公开(公告)号：US08884049B2
公开(公告)日：2014-11-11
申请号：US13484526
申请日：2012-05-31
申请人： Xiaojin Harry Li , Prasad Duggirala , Joanna L. Shih
发明人： Xiaojin Harry Li , Prasad Duggirala , Joanna L. Shih
IPC分类号： C07C67/00 , C08G65/34 , C08G65/48
CPC分类号： C08G65/34 , C08G65/48
摘要： The invention provides a method of efficiently producing branched, cyclic glycerol-based polymer surface active products having ester and alkyl functional groups with a co-product as anti-biodegrading agent from inexpensive readily available glycerol monomer. The method involves polymerizing glycerol or glycerol with at least another monomer to multiple other monomers in the presence of particular amount of a strong base as the catalyst under a particular distillation environment. The polyol then undergoes esterification, alkylation and crosslinking in presence of particular amount of a catalyst under a particular low activity atmospheric environment. The glycerol-based polymer surface active products produced by the inventive method are beneficial for reducing lignin, extractives and rejects levels in pulping process of papermaking industry.
摘要翻译：本发明提供了一种有效生产具有酯和烷基官能团的支化环状甘油基聚合物表面活性产物的方法，其具有由廉价容易获得的甘油单体作为抗生物降解剂的共产物。该方法包括在特定蒸馏环境下，在特定量的强碱作为催化剂的存在下，将甘油或甘油与至少另一种单体聚合成多种其它单体。在特定的低活性大气环境下，多元醇在特定量的催化剂存在下进行酯化，烷基化和交联。通过本发明方法生产的基于甘油的聚合物表面活性产品有利于降低造纸工业制浆过程中的木质素，提取物和废料水平。

8. 发明申请

US20120073775A1 METHOD FOR MONITORING ORGANIC DEPOSITS IN PAPERMAKING 审中-公开
标题翻译：用于监测造纸中有机沉积物的方法
公开(公告)号：US20120073775A1
公开(公告)日：2012-03-29
申请号：US13304785
申请日：2011-11-28
申请人： Prasad Duggirala , Sergey Sheychenko
发明人： Prasad Duggirala , Sergey Sheychenko
IPC分类号： D21F13/00
CPC分类号： G01N33/343 , G01N29/022 , G01N29/036 , G01N2291/02416 , G01N2291/0256 , G01N2291/0258 , G01N2291/0426
摘要： A method for monitoring the deposition of organic deposits from a liquid or slurry in a papermaking process is disclosed. Also disclosed is a method for measuring the effectiveness of inhibitors that decrease the deposition of organic deposits in a papermaking process. The method may involve monitoring the deposition of organic deposits of a liquid or slurry that simulates the conditions of a papermaking process. The methods may comprise the steps of monitoring the rate of deposition of organic deposits; adding an inhibitor that decreases the deposition of organic deposits from the liquid or slurry; and optionally re-measuring the rate of deposition of organic deposits from the liquid or slurry onto the quartz crystal microbalance, with the rates of deposition determined by measuring the vibration frequency of the quartz crystal microbalance.
摘要翻译：公开了一种在造纸过程中监测来自液体或浆料的有机沉积物沉积的方法。还公开了一种用于测量减少造纸过程中有机沉积物沉积的抑制剂的有效性的方法。该方法可以包括监测模拟造纸过程条件的液体或浆料的有机沉积物的沉积。所述方法可以包括监测有机沉积物的沉积速率的步骤; 添加减少有机沉积物从液体或浆料中沉积的抑制剂; 并且可选地重新测量有机沉积物从液体或浆料沉积到石英晶体微量天平上的速率，其中沉积速率通过测量石英晶体微量天平的振动频率而确定。

9. 发明申请

US20070131365A1 Method of brightness enhancement 审中-公开
标题翻译：亮度增强方法
公开(公告)号：US20070131365A1
公开(公告)日：2007-06-14
申请号：US11300541
申请日：2005-12-14
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21C9/10
CPC分类号： D21C9/1042 , D21C5/02 , D21C9/1084 , Y02W30/648
摘要： A method of enhancing brightness of paper made from mechanical pulps or recycled pulps that comprise: adding an effective amount of one or more chelants and one or more surfactants to a bleaching stage of a papermaking process that involves the addition of hydrosulfite is disclosed.
摘要翻译：公开了一种提高由机械纸浆或再循环纸浆制成的纸张的亮度的方法，其包括：向涉及加入连二亚硫酸盐的造纸方法的漂白阶段加入有效量的一种或多种螯合剂和一种或多种表面活性剂。

10. 发明授权

US08617356B2 Compositions and processes for paper 有权
标题翻译：论文的组成和过程
公开(公告)号：US08617356B2
公开(公告)日：2013-12-31
申请号：US13459321
申请日：2012-04-30
申请人： Prasad Duggirala , Sergey Shevchenko
发明人： Prasad Duggirala , Sergey Shevchenko
IPC分类号： D21H21/30 , D21H21/32
CPC分类号： D21H21/30 , D21C9/1042 , D21C9/1084 , D21H21/32
摘要： Compositions and processes that enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process involving optical brighteners are identified. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.
摘要翻译：鉴定了在涉及荧光增白剂的造纸过程的不同阶段应用时增强纸浆或纸张的亮度和改善颜色的组合物和方法。与荧光增白剂和/或螯合剂组合使用时，所述试剂产生之前未在纸工艺中鉴定的协同效应。

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