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公开(公告)号：US20110091940A1
公开(公告)日：2011-04-21
申请号：US12935447
申请日：2009-04-03
Applicant: Rajai H. Atalla
Inventor： Rajai H. Atalla
CPC classification number: C12P7/06 , C08B1/08 , Y02E50/16 , Y02E50/17 , Y02E50/343
Abstract: Disclosed are methods and systems for treating cellulose to make it more accessible for enzymatic or chemical modification. The invention includes treating cellulose with an alkali in an alcohol/water co-solvent system. The treatment decrystallizes or deaggregates the cellulosic material. The methods and systems increase the efficiency of enzymatic or chemical modifications of cellulose for use as biofuels or cellulose derivatives.
Abstract translation: 公开了用于处理纤维素以使其更易于酶或化学修饰的方法和系统。 本发明包括在醇/水共溶剂体系中用碱处理纤维素。 处理使纤维素材料脱结晶或解聚。 所述方法和系统增加用作生物燃料或纤维素衍生物的纤维素的酶促或化学修饰的效率。
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公开(公告)号：US08617851B2
公开(公告)日：2013-12-31
申请号：US12935447
申请日：2009-04-03
Applicant: Rajai H. Atalla
Inventor： Rajai H. Atalla
IPC: C12P7/10
CPC classification number: C12P7/06 , C08B1/08 , Y02E50/16 , Y02E50/17 , Y02E50/343
Abstract: Disclosed are methods and systems for treating cellulose to make it more accessible for enzymatic or chemical modification. The invention includes treating cellulose with an alkali in an alcohol/water co-solvent system. The treatment decrystallizes or deaggregates the cellulosic material. The methods and systems increase the efficiency of enzymatic or chemical modifications of cellulose for use as biofuels or cellulose derivatives.
Abstract translation: 公开了用于处理纤维素以使其更易于酶或化学修饰的方法和系统。 本发明包括在醇/水共溶剂体系中用碱处理纤维素。 处理使纤维素材料脱结晶或解聚。 所述方法和系统增加用作生物燃料或纤维素衍生物的纤维素的酶促或化学修饰的效率。
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3.发明授权
公开(公告)号：US5695606A
公开(公告)日：1997-12-09
申请号：US664488
申请日：1996-06-17
Applicant: Rajai H. Atalla
Inventor： Rajai H. Atalla
CPC classification number: D21C9/1057 , D21C9/1063
Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula �V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s !.sup.x- where l is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.
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公开(公告)号：US20140262087A1
公开(公告)日：2014-09-18
申请号：US14290384
申请日：2014-05-29
Applicant: Steven L. Edwards , Rajai H. Atalla
Inventor： Steven L. Edwards , Rajai H. Atalla
IPC: D21H11/00
CPC classification number: D21H11/00 , D21H11/18 , D21H27/002 , Y10T428/249966
Abstract: Fibrous cellulosic products incorporating both conventional cellulosic fibers and laterally expanded cellulose fibers exhibit exceptional porosity, bulk, absorbency and resiliency properties. Typical products include absorbent tissue products, absorbent fluff products and flat papers. The laterally expanded cellulose fibers exhibit: (i) a broadened X-Ray diffraction peak for the most prominent reflection having a width at half-height, (W1/2h)A, of at least about 3.0° 2Θ, (ii) broad overlapping maxima in their Raman spectrum between 285 and 500 cm−1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm−1 being between 35 and 50% of the height of the peak near 1098 cm−1 and (iii) a blue stain when treated with Graff C-stain, the stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.
Abstract translation: 结合常规纤维素纤维和横向膨胀纤维素纤维的纤维素纤维产品具有出色的孔隙率，体积，吸收性和弹性性能。 典型的产品包括吸收性纸巾产品，吸收性绒毛产品和平纸。 横向膨胀的纤维素纤维显示：（i）具有至少约3.0°2θ的半高宽（W1 / 2h）A的最突出反射的X射线衍射峰变宽，（ii）宽重叠 在285和500cm -1之间的拉曼光谱中的最大值在285和500cm -1之间的所述光谱中所述最大值的两个最高的高度在1098cm -1附近的峰的高度的35-50％之间， （iii）当用Graff C染色剂处理时，蓝色染色，染色剂表现出比用漂白的硬木牛皮纸纤维和漂白的软木牛皮纸纤维显示的污渍更少的红色。
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5.发明授权Oxidative delignification of wood or wood pulp by transition metal-substituted polyoxometalates 失效通过过渡金属取代的多金属氧酸盐对木材或木浆进行氧化脱木质素
公开(公告)号：US5552019A
公开(公告)日：1996-09-03
申请号：US219041
申请日：1994-03-28
Applicant: Ira A. Weinstock , Craig L. Hill , Rajai H. Atalla
Inventor： Ira A. Weinstock , Craig L. Hill , Rajai H. Atalla
CPC classification number: D21C9/1057 , D21C9/1063
Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula [V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s ].sup.x- where l is 0-18, m is . 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.
Abstract translation: 公开了木浆和纤维脱木素的方法。 该方法包括以下步骤：获得木浆并将木浆暴露于式[VlMomWnNboTap TM qXrO] x-的多金属氧酸盐，其中l为0-18，m为。 0-40，n为0-40，o为0-10，p为0-10，q为0-9，r为0-6，TM为含d电子的过渡金属离子，X为 杂原子，其为p或d嵌段元素，其中l + m + n + o + p> / = 4,1 + m + q> 0，s足够大，使得x> 0。 暴露在多金属氧酸盐被还原的条件下。 在本发明的优选形式中，该方法另外包括再氧化多金属氧酸盐的步骤。
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Patent Agency Ranking6.发明授权Oxidation of lignin and polysaccharides mediated by polyoxometalate treatment of wood pulp 失效通过多金属氧酸盐处理木浆介导的木质素和多糖的氧化
公开(公告)号：US5549789A
公开(公告)日：1996-08-27
申请号：US224449
申请日：1994-04-07
Applicant: Rajai H. Atalla , Ira A. Weinstock , Craig L. Hill , Richard S. Reiner
Inventor： Rajai H. Atalla , Ira A. Weinstock , Craig L. Hill , Richard S. Reiner
CPC classification number: D21C9/1063 , D21C9/1057
Abstract: A method for oxidative degradation of lignin and polysaccharide fragments dissolved during polyoxometalate delignification or bleaching of wood pulp, wood fiber or pulp obtained from a non-woody plant. The method comprises the steps of obtaining a spent polyoxometalate bleaching solution containing a polyoxometalate of the formula [V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s ].sup.x- where 1 is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom which is p or d block element, provided that l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0, and heating the solution in the presence of an oxidant under conditions wherein the dissolved organic compounds are oxidatively degraded to volatile organic compounds and water.
Abstract translation: 一种木质素和多糖片段的氧化降解方法，其在多金属氧酸盐脱木质素或从非木本植物获得的木浆，木纤维或纸浆的漂白中溶解。 该方法包括以下步骤：获得含有式[VlMomWnNboTap TM qXrO] x-的多金属氧酸盐的废多金属氧酸盐漂白溶液，其中1为0-18，m为0-40，n为0-40，o为0- 10，p为0-10，q为0-9，r为0-6，TM为含d电子的过渡金属离子，X为p或d为杂原子的嵌段元素，条件是l + m + n + o + p> / = 4,1 + m + q> 0，s足够大，使x> 0，并且在氧化剂存在下加热溶液，其中溶解的有机化合物氧化降解为挥发性 有机化合物和水。
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公开(公告)号：US09187571B2
公开(公告)日：2015-11-17
申请号：US13822190
申请日：2011-09-14
Applicant: Rajai H. Atalla
Inventor： Rajai H. Atalla
Abstract: Disclosed are methods and systems for treating cellulose to make it more accessible for enzymatic or chemical modification. The invention includes treating cellulose with an alkali in an alcohol/water co-solvent system. The treatment decrystallizes or deaggregates the cellulosic material. The methods and systems increase the efficiency of enzymatic or chemical modifications of cellulose for use as biofuels or cellulose derivatives.
Abstract translation: 公开了用于处理纤维素以使其更易于酶或化学修饰的方法和系统。 本发明包括在醇/水共溶剂体系中用碱处理纤维素。 处理使纤维素材料脱结晶或解聚。 所述方法和系统增加用作生物燃料或纤维素衍生物的纤维素的酶促或化学修饰的效率。
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公开(公告)号：US08741104B2
公开(公告)日：2014-06-03
申请号：US13457801
申请日：2012-04-27
Applicant: Steven L. Edwards , Rajai H. Atalla
Inventor： Steven L. Edwards , Rajai H. Atalla
IPC: D21H11/18
CPC classification number: D21H11/00 , D21H11/18 , D21H27/002 , Y10T428/249966
Abstract: Fibrous cellulosic products incorporating both conventional cellulosic fibers and laterally expanded cellulose fibers exhibit exceptional porosity, bulk, absorbency and resiliency properties. Typical products include absorbent tissue products, absorbent fluff products and flat papers. The laterally expanded cellulose fibers exhibit: (i) a broadened X-Ray diffraction peak for the most prominent reflection having a width at half-height, (W1/2h)A, of at least about 3.0° 2Θ, (ii) broad overlapping maxima in their Raman spectrum between 285 and 500 cm−1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm−1 being between 35 and 50% of the height of the peak near 1098 cm−1 and (iii) a blue stain when treated with Graff C-stain, the stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.
Abstract translation: 结合常规纤维素纤维和横向膨胀纤维素纤维的纤维素纤维产品具有出色的孔隙率，体积，吸收性和弹性性能。 典型的产品包括吸收性纸巾产品，吸收性绒毛产品和平纸。 横向膨胀的纤维素纤维显示：（i）具有至少约3.0°2θ的半高宽（W1 / 2h）A的最突出反射的X射线衍射峰变宽，（ii）宽重叠 在285和500cm -1之间的拉曼光谱中的最大值在285和500cm -1之间的所述光谱中所述最大值的两个最高的高度在1098cm -1附近的峰的高度的35-50％之间， （iii）当用Graff C染色剂处理时，蓝色染色，染色剂表现出比用漂白的硬木牛皮纸纤维和漂白的软木牛皮纸纤维显示的污渍更少的红色。
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公开(公告)号：US20130172544A1
公开(公告)日：2013-07-04
申请号：US13822190
申请日：2011-09-14
Applicant: Rajai H. Atalla
Inventor： Rajai H. Atalla
IPC: C08B1/00
Abstract: Disclosed are methods and systems for treating cellulose to make it more accessible for enzymatic or chemical modification. The invention includes treating cellulose with an alkali in an alcohol/water co-solvent system. The treatment decrystallizes or deaggregates the cellulosic material. The methods and systems increase the efficiency of enzymatic or chemical modifications of cellulose for use as biofuels or cellulose derivatives.
Abstract translation: 公开了用于处理纤维素以使其更易于酶或化学修饰的方法和系统。 本发明包括在醇/水共溶剂体系中用碱处理纤维素。 处理使纤维素材料脱结晶或解聚。 所述方法和系统增加用作生物燃料或纤维素衍生物的纤维素的酶促或化学修饰的效率。
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公开(公告)号：US20120273147A1
公开(公告)日：2012-11-01
申请号：US13457801
申请日：2012-04-27
Applicant: Steven L. Edwards , Rajai H. Atalla
Inventor： Steven L. Edwards , Rajai H. Atalla
CPC classification number: D21H11/00 , D21H11/18 , D21H27/002 , Y10T428/249966
Abstract: Fibrous cellulosic products incorporating both conventional cellulosic fibers and laterally expanded cellulose fibers exhibit exceptional porosity, bulk, absorbency and resiliency properties. Typical products include absorbent tissue products, absorbent fluff products and flat papers. The laterally expanded cellulose fibers exhibit: (i) a broadened X-Ray diffraction peak for the most prominent reflection having a width at half-height, (W1/2h)A, of at least about 3.0° 2Θ, (ii) broad overlapping maxima in their Raman spectrum between 285 and 500 cm−1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm−1 being between 35 and 50% of the height of the peak near 1098 cm−1 and (iii) a blue stain when treated with Graff C-stain, the stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.
Abstract translation: 结合常规纤维素纤维和横向膨胀纤维素纤维的纤维素纤维产品具有出色的孔隙率，体积，吸收性和弹性性能。 典型的产品包括吸收性纸巾产品，吸收性绒毛产品和平纸。 横向膨胀的纤维素纤维显示：（i）具有至少约3.0°2θ的半高宽（W1 / 2h）A的最突出反射的X射线衍射峰变宽，（ii）宽重叠 在285和500cm -1之间的拉曼光谱中的最大值在285和500cm -1之间的所述光谱中所述最大值的两个最高的高度在1098cm -1附近的峰的高度的35-50％之间， （iii）当用Graff C染色剂处理时，蓝色染色，染色剂表现出比用漂白的硬木牛皮纸纤维和漂白的软木牛皮纸纤维显示的污渍更少的红色。
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