公开(公告)号：US11873351B2

公开(公告)日：2024-01-16

申请号：US17083617

申请日：2020-10-29

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Taishi Kitaguchi ,  Junichi Matsubara ,  Mitsuhiro Yoshida

IPC分类号： C08B3/16 ,  C08B13/00

CPC分类号： C08B3/16

摘要： There is provided a method for producing hydroxypropyl methyl cellulose phthalate (HPMCP), including an esterification step of reacting hydroxypropyl methyl cellulose with a carboxybenzoylating agent in the presence of an aliphatic carboxylic acid in a kneader reactor equipped with two or more stirring blades rotating around their own axes and orbitally revolving, to obtain a reaction product solution containing HPMCP; a precipitation step of precipitating the HPMCP by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCP; and a washing and recovery step of washing the HPMCP in the suspension and recovering the washed HPMCP. Further, there is provided HPMCP having yellowness at 20° C. of 10.0 or less, as determined in a 10% by mass solution of the HPMCP in acetone.

公开(公告)号：US11655309B2

公开(公告)日：2023-05-23

申请号：US16348586

申请日：2017-11-09

申请人： Eastman Chemical Company

发明人： Wenlai Feng ,  Haining An ,  Michael Eugene Donelson ,  Thomas Joseph Pecorini ,  Robert Ellis McCrary ,  Douglas Weldon Carico ,  Spencer Allen Gilliam

IPC分类号： C08B3/16 ,  C08K5/1515 ,  C08K5/526 ,  C08L1/10 ,  C08L1/14 ,  C08L1/12 ,  C08L1/02 ,  B29C45/00 ,  C08B3/06 ,  C08K5/00 ,  B29K1/00 ,  B29K105/00 ,  B29C45/78

CPC分类号： C08B3/16 ,  B29C45/0001 ,  C08B3/06 ,  C08K5/1515 ,  C08K5/526 ,  C08L1/02 ,  C08L1/10 ,  C08L1/12 ,  C08L1/14 ,  B29C45/78 ,  B29C2945/76498 ,  B29C2945/76531 ,  B29C2945/76561 ,  B29C2945/76668 ,  B29K2001/12 ,  B29K2105/0038 ,  B29K2995/0017 ,  B29K2995/0056 ,  C08K5/0016 ,  C08L2205/02 ,  C08L2205/06 ,  C08L1/14 ,  C08K5/107 ,  C08L1/14 ,  C08L25/08 ,  C08L1/14 ,  C08K5/107 ,  C08L25/08 ,  C08L1/14 ,  C08L75/04 ,  C08L1/14 ,  C08L25/08

摘要： A shaped article comprising a polymer-based resin derived from cellulose, wherein the polymer-based resin has an HDT of at least 95° C., a bio-derived content of at least 20 wt %, a notched izod impact strength of greater than 80 J/m and at least one of the following properties chosen from: flexural modulus of greater than 1900 MPa; a spiral flow length or at least 3.0 cm; a flex creep deflection of less than 12 mm; a transmission of at least 70%; a ΔE value of less than 25; or an L* color of at least 85.

公开(公告)号：US20230113238A1

公开(公告)日：2023-04-13

申请号：US18046228

申请日：2022-10-13

申请人： Eastman Chemical Company

发明人： Casey Lynn Elkins ,  Robert Jacks Sharpe ,  Bin Wang

IPC分类号： C08B3/16 ,  C08B3/06 ,  C08B3/08 ,  C08J5/18

摘要： The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.

公开(公告)号：US20220289947A1

公开(公告)日：2022-09-15

申请号：US17753179

申请日：2020-08-11

申请人： Eastman Chemical Company

发明人： Wesley Wayne McConnell ,  Mustafa Humbel Ahmed ,  Bin Wang

IPC分类号： C08L1/14 ,  C08B3/16

摘要： The present application discloses regioselectively substituted cellulose esters comprising 2-ethylhexanoyl substituents that have desirable mechanical properties that allow the cellulose esters to be stretched into larger and thinner films while still maintaining their optical properties.

公开(公告)号：US11319385B2

公开(公告)日：2022-05-03

申请号：US16521253

申请日：2019-07-24

申请人： SHIN-ETSU CHEMICAL CO., LTD.

发明人： Taishi Kitaguchi ,  Akiko Tsuchida ,  Akira Kitamura ,  Mitsuo Narita

IPC分类号： C08B3/16

摘要： There is provided a method for producing hypromellose acetate succinate (HPMCAS), the method not requiring any special device and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCAS, including an esterification step of esterifying hypromellose with an acetylating agent and a succinoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCAS; a precipitation step of precipitating the HPMCAS by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCAS; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCAS contained in the neutralized suspension to obtain the washed HPMCAS.

公开(公告)号：US20210139611A1

公开(公告)日：2021-05-13

申请号：US17153285

申请日：2021-01-20

申请人： Daicel Corporation

发明人： Tomohiro HASHIZUME ,  Hiroyuki MATSUMURA ,  Tohru SHIBATA ,  Hiroshi KOYAMA ,  Mitsuru OHNO ,  Tomoichi WATABE

IPC分类号： C08B3/16 ,  B01D71/14 ,  B01D69/08 ,  B01D71/18 ,  C08J5/18

摘要： A cellulose ester, wherein, in a structural formula of the following general formula (I), a degree of substitution where X is an acyl group is from 2.91 to 3.0; the acyl group includes benzoyl group (A) optionally having a substituent, and benzoyl group (B) optionally having a substituent different from that of benzoyl group (A); and when the degree of substitution is 3.0, a degree of substitution of benzoyl group (A) is from 1.5 to 2.9, and a degree of substitution of benzoyl group (B) is from 0.1 to 1.5, wherein all or some of X represents an acyl group; when some of X represents an acyl group, the remainder represents a group selected from a hydrogen atom and an alkyl group; and n represents an integer of from 20 to 20,000.

公开(公告)号：US10927190B2

公开(公告)日：2021-02-23

申请号：US16091951

申请日：2017-04-04

申请人： Daicel Corporation

发明人： Tomohiro Hashizume ,  Hiroyuki Matsumura ,  Tohru Shibata ,  Hiroshi Koyama ,  Mitsuru Ohno ,  Tomoichi Watabe

IPC分类号： C08B3/16 ,  B01D71/14 ,  B01D69/08 ,  B01D71/18 ,  C08J5/18

摘要： A cellulose ester, wherein, in a structural formula of the following general formula (I), a degree of substitution where X is an acyl group is from 2.91 to 3.0; the acyl group includes benzoyl group (A) optionally having a substituent, and benzoyl group (B) optionally having a substituent different from that of benzoyl group (A); and when the degree of substitution is 3.0, a degree of substitution of benzoyl group (A) is from 1.5 to 2.9, and a degree of substitution of benzoyl group (B) is from 0.1 to 1.5, wherein all or some of X represents an acyl group; when some of X represents an acyl group, the remainder represents a group selected from a hydrogen atom and an alkyl group; and n represents an integer of from 20 to 20,000.

公开(公告)号：US10919984B2

公开(公告)日：2021-02-16

申请号：US16348550

申请日：2017-11-09

申请人： Eastman Chemical Company

发明人： Wenlai Feng ,  Haining An ,  Michael Eugene Donelson ,  Thomas Joseph Pecorini ,  Robert Ellis McCrary ,  Douglas Weldon Carico ,  Spencer Allen Gilliam

IPC分类号： B32B7/02 ,  C08B3/16 ,  C08K5/1515 ,  C08K5/526 ,  C08L1/10 ,  C08L1/14 ,  C08L1/12 ,  C08L1/02 ,  B29C45/00 ,  C08B3/06 ,  C08K5/00 ,  B29K1/00 ,  B29K105/00

摘要： An injection molded article comprising a thin-walled body portion formed from a polymer-based resin derived from cellulose, wherein the thin-walled body portion comprises: i. a gate position; ii. a last fill position; iii. a flow length to wall thickness ratio greater than or equal to 100, wherein the flow length is measured from the gate position to the last fill position; and iv. a wall thickness less than or equal to about 2 mm; and wherein the polymer-based resin has an HDT or at least 95° C., a bio-derived content of at least 20 wt %, and a spiral flow length of at least 3.0 cm, when the polymer-based resin is molded with a spiral flow mold with the conditions of a barrel temperature of 238° C., a melt temperature of 246° C., a molding pressure of 13.8 MPa, a mold thickness of 0.8 mm, and a mold width of 12.7 mm.

公开(公告)号：US10759872B2

公开(公告)日：2020-09-01

申请号：US15482910

申请日：2017-04-10

申请人： Eastman Chemical Company

发明人： Matthew Allen Boone ,  Christopher Harlan Burk ,  Peter Borden Mackenzie ,  Jennifer A. Fish ,  Eduardo Gallas Cervo ,  Elaine Beatrice Mackenzie ,  Robert Joseph Maleski ,  Wesley McConnell ,  David William Norman ,  Tabatha Stearns ,  Bin Wang

IPC分类号： C08B3/16 ,  B32B27/24 ,  B32B27/08 ,  B32B27/36 ,  B32B7/12 ,  B32B27/28 ,  C08L1/14 ,  B32B23/08 ,  B32B27/32 ,  B32B27/18 ,  G02B5/30 ,  B32B27/22 ,  B32B27/06 ,  G02F1/13363 ,  H01L51/52 ,  C08L1/08 ,  C08L1/10

摘要： Regioselectively substituted cellulose esters having a plurality of pivaloyl substituents and a plurality of aryl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in films, such as +A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.

公开(公告)号：US10738134B2

公开(公告)日：2020-08-11

申请号：US15025451

申请日：2014-09-26

申请人： Kevin J. Edgar ,  Xiangtao Meng ,  John Matson

发明人： Kevin J. Edgar ,  Xiangtao Meng ,  John Matson

IPC分类号： C08B3/16 ,  C08B3/00 ,  C08B37/02 ,  C08B37/00 ,  A61K47/38 ,  C08B3/14

摘要： Methods for the cross-metathesis of polysaccharides with one or more olefin-terminated side chains and cross-metathesized products are described. In an exemplary embodiment, a method for the synthesis of cellulose ω-carboxyesters via olefin cross-metathesis is described. Conditions of the reactions were relatively mild and the olefin-substituted polysaccharides and the appropriate monomeric olefin partners appear to follow Grubbs rules as summarized herein. The compounds and methods may be useful for structure-property studies, particularly those aimed at developing polymers for drug delivery, such as for controlled-release drug delivery systems, controlled-release coatings, increasing bioavailability of drugs, and maintaining drug supersaturation in the GI tract.