公开(公告)号：US11382842B2

公开(公告)日：2022-07-12

申请号：US15750115

申请日：2016-08-04

申请人： Oji Holdings Corporation ,  NIKKO CHEMICALS CO., LTD.

发明人： Ikue Homma ,  Takayuki Shimaoka ,  Keiko Murakoso ,  Akihito Uka

IPC分类号： A61K8/02 ,  A61Q19/00 ,  A61K8/73 ,  A61Q17/04 ,  C08B15/00 ,  C08L101/14 ,  A61Q1/02 ,  A61Q5/12 ,  C08L1/02 ,  C08L33/26

摘要： It is an object of the present invention to suppress agglutination of ultrafine cellulose fibers, while using the ultrafine cellulose fibers as a thickener in a cosmetic product formulation, so as to provide a uniform cosmetic. The present invention provides a cosmetic comprising the following components (A) and (B): (A) ultrafine cellulose fibers having a fiber width of 1000 nm or less; and (B) a water-soluble polymer.

公开(公告)号：US20220112311A1

公开(公告)日：2022-04-14

申请号：US17428649

申请日：2020-04-17

申请人： Dow Global Technologies LLC

发明人： Alexandra Hild ,  Jöerg Neubauer ,  Sonja Menz

IPC分类号： C08B15/00 ,  C08B11/08 ,  C08B11/20 ,  C04B24/38

摘要： A process for producing a crosslinked cellulose ether including the steps of: (a) contacting at least one cellulose material with at least one alkalization reagent to form an activated cellulose material; (b) contacting the activated cellulose material of step (a) with at least one etherification reagent to form an uncrosslinked cellulose ether; (c) subjecting the cellulose ether of step (b) to a simultaneous or stepwise washing and/or granulating step; (d) adding at least one crosslinking agent to the uncrosslinked cellulose ether during the washing and/or granulating of step (c) to form a crosslinked cellulose ether; and (e) any other optional components desired; and a crosslinked cellulose ether produced by the above process.

公开(公告)号：US11248107B2

公开(公告)日：2022-02-15

申请号：US16362297

申请日：2019-03-22

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： You-Lo Hsieh ,  Feng Jiang

IPC分类号： C08L1/02 ,  C08L1/12 ,  C08B15/10 ,  C08J9/00 ,  C08J9/28 ,  C08G18/76 ,  C08K5/54 ,  H01G11/36 ,  C08B15/00 ,  B82Y40/00

摘要： The present disclosure provides a method for preparing an aerogel or a foam, the method comprising: forming a reaction mixture comprising a cellulose nanofibril gel, a first solvent, and one or more crosslinking agents under conditions sufficient to crosslink the gel; and contacting the crosslinked gel with a second solvent under conditions sufficient to dry the crosslinked gel, thereby forming an aerogel or foam.

公开(公告)号：US20210316274A1

公开(公告)日：2021-10-14

申请号：US17273894

申请日：2019-09-06

申请人： FPInnovations

发明人： Wadood Y. HAMAD ,  Siham ATIFI

IPC分类号： B01J20/24 ,  B01J20/28 ,  B01J20/30 ,  C08B15/00

摘要： The present disclosure generally relates to a scalable, green process for producing non-toxic, all-cellulose super absorbent hydrogels that form instantly after cross-linking. A super absorbent hydrogel can be produced by physical mixing of water-soluble carboxyalkyl polysaccharides such carboxymethyl cellulose and negatively-charged cellulose nanocrystals resulting in instantaneous gelation. Cellulose nanocrystals act as effective cross-linkers when physically mixed with carboxymethyl cellulose in an aqueous medium. The resulting hydrogel possesses excellent absorption properties, and has applications in a wide range of products from hygiene products to medical and industrial super absorbent products.

公开(公告)号：US11046787B2

公开(公告)日：2021-06-29

申请号：US16612552

申请日：2018-05-09

申请人： OSAKA RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY ,  DAIO PAPER CORPORATION

发明人： Joji Kadota ,  Yasuyuki Agari ,  Hiroshi Hirano ,  Akinori Okada ,  Takaaki Imai

IPC分类号： C08B15/00 ,  C08G63/08 ,  C08K5/3432

摘要： Provided are a polylactide-grafted cellulose nanofiber that is suitable as a molding material, and a production method thereof. A polylactide-grafted cellulose nanofiber includes grafted cellulose having a graft chain bonding to cellulose constituting a cellulose nanofiber, wherein the graft chain is a polylactide, and a ratio of an absorbance derived from C═O of the polylactide to an absorbance derived from O—H of the cellulose on an infrared absorption spectrum is no less than 0.01 and no greater than 1,000. In addition, a production method of a polylactide-grafted cellulose nanofiber includes carrying out graft polymerization of a lactide to cellulose constituting a cellulose nanofiber in the presence of an organic polymerization catalyst which includes an amine and a salt obtained by reacting the amine with an acid. As the organic polymerization catalyst, 4-dimethylaminopyridine and 4-dimethylaminopyridinium triflate are preferred.

公开(公告)号：US10954348B2

公开(公告)日：2021-03-23

申请号：US16040871

申请日：2018-07-20

申请人： KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

发明人： Jeongsoo Yoo ,  Woonghee Lee

IPC分类号： C08J3/24 ,  A61K9/51 ,  A61K51/06 ,  B82Y5/00 ,  C08G65/30 ,  C08B37/00 ,  A61K47/69 ,  A61K9/06 ,  A61K49/18 ,  A61K51/12 ,  C08G81/00 ,  C08B15/00 ,  C08L71/02 ,  C08H1/00 ,  C08B33/04 ,  C08B37/18 ,  C08G65/34 ,  B01J19/08 ,  C07H3/06 ,  C08B37/16 ,  C08B37/02 ,  C08B37/08

摘要： The present invention relates to a biocompatible nanoparticle and a use thereof and, more specifically, to a biocompatible nanoparticle formed by irradiation an electron beam to an aqueous solution comprising at least one substance selected from the group consisting of a polysaccharide, a derivative thereof and a polyethylene glycol, thereby inducing inter-molecular cross-linking or intra-molecular cross-linking, and to a use of the biocompatible nanoparticle in a drug carrier, a contrast agent, a diagnostic agent or an intestinal adhesion prevention agent or for disease prevention and treatment.

公开(公告)号：US10906994B2

公开(公告)日：2021-02-02

申请号：US16152133

申请日：2018-10-04

申请人： API Intellectual Property Holdings, LLC

发明人： Kimberly Nelson ,  Theodora Retsina ,  Vesa Pylkkanen ,  Ryan O'Connor

IPC分类号： C09K8/10 ,  C08B15/08 ,  D21C5/00 ,  C08B37/00 ,  C08H8/00 ,  D21C3/04 ,  D21C9/00 ,  D21C11/00 ,  C08L1/02 ,  C07G1/00 ,  C08B15/00 ,  C12P7/04 ,  C12P7/10 ,  C12P7/14 ,  C12P7/16 ,  C12P7/28 ,  C12P7/46 ,  C12P7/56 ,  C12P19/02 ,  C12P19/14 ,  C13K1/02 ,  D21C3/06 ,  D21H11/18 ,  D21C3/20 ,  D21C9/10 ,  C08B15/02

摘要： Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with surprisingly low mechanical energy input. In some variations, the process includes fractionating biomass with an acid (such as sulfur dioxide), a solvent (such as ethanol), and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers. These polymers may be combined with the nanocellulose to form completely renewable composites.

公开(公告)号：US10899847B2

公开(公告)日：2021-01-26

申请号：US15780324

申请日：2016-11-30

申请人： GP Cellulose GmbH

发明人： Arthur J. Nonni ,  James M. Keough ,  Charles E. Courchene ,  Harry R. Bartges ,  Blair R. Carter

IPC分类号： C08B15/04 ,  C08B3/00 ,  C08B9/00 ,  C08B11/00 ,  C08B15/00

摘要： The present disclosure generally relates to open chain modified cellulosic pulps and methods for making and using the same. More specifically, the open chain modified cellulosic pulps described herein may be made by oxidation of a cellulosic pulp, followed by reduction of the oxidized groups, resulting in a modified pulp having an improved open chain configuration that may be more efficiently converted into cellulosic derivative products. This disclosure further relates to improved cellulosic derivative products made therefrom, for example, cellulose esters, cellulose ethers, and regenerated cellulose products.

公开(公告)号：US20200277407A1

公开(公告)日：2020-09-03

申请号：US16812767

申请日：2020-03-09

申请人： GELESIS, LLC

发明人： Alessandro Sannino ,  Christian Demitri ,  Yishai Zohar ,  Eyal S. Ron ,  Barry J. Hand ,  Cosimo Saponaro

IPC分类号： C08B15/00 ,  A61K31/738 ,  A61K9/00 ,  A61K9/48

摘要： The present invention provides crosslinked carboxymethylcellulose having high elastic modulus coupled with high absorbance capacity when swollen in simulated gastric fluid/water (1:8) and simulated intestinal fluids. The invention further provides methods of making the crosslinked carboxymethylcellulose, compositions comprising the crosslinked carboxymethylcellulose and methods of using the crosslinked carboxymethylcellulose, for example, for treating overweight or obesity or for enhancing glycemic control.

公开(公告)号：US10759878B2

公开(公告)日：2020-09-01

申请号：US15736113

申请日：2016-06-14

申请人： Contipro a.s.

发明人： Tomas Bobula ,  Radovan Buffa ,  Pavlina Prochazkova ,  Vladimir Velebny

IPC分类号： C08B37/00 ,  C08B37/08 ,  C08B15/00 ,  A61K47/61 ,  A61K47/36 ,  A61K47/38 ,  A61L27/20 ,  A61L31/04 ,  C08B11/12

摘要： The invention discloses a method of preparation of crosslinked materials based on polysaccharides using electromagnetic radiation in an aqueous solution containing a polysaccharide with a bound carbamate photoremovable protecting group (PPG with group —NH—CO—O—) and a polysaccharide containing an aldehyde group —CHO. The crosslinking process itself is carried out by means of a condensation reaction of the photochemically released amino group (—NH2) with the aldehyde group (—CHO) forming a bond of imine type (—N═CH—). Both processes proceed simultaneously and they can be performed under physiological conditions. The advantage of the suggested solution is the temporal and spatial control of crosslinking that allows the preparation of advanced materials for tissue engineering where the crosslink density and thus the mechanical properties in the material structure can be tailored.