Unsaturated Patents (Class 536/93)
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Publication number: 20140142292Abstract: A (meth)allylsilane compound chemically bonded to various alcohol derivatives including polyol derivatives such as saccharides, is raw material used to cause a substrate to express functionalities such as a defogging property and separation characteristics for column chromatography, can be easily prepared, is easily purified, and is stable and easy to handle, and a functional material in which those functionalities are expressed, while silyl group-containing groups are conveniently carried at a high density on the surface of the substrate, by using the (meth)allylsilane compound as a silane coupling agent for silane-coupling to the substrate. The (meth)allylsilane compound includes a (meth)allylsilyl group-containing alkyl group or a (meth)allylsilylalkyl group-containing aralkyl group that is bonded to an alcohol derivative.Type: ApplicationFiled: June 28, 2012Publication date: May 22, 2014Applicants: DAICEL CORPORATION, KYOEISHA CHEMICAL CO., LTD.Inventor: Toyoshi Shimada
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Patent number: 8709450Abstract: The invention is a cellulose derivative wherein some of the carboxyl groups of the cellulose derivative carboxymethylcellulose are replaced with —CO—NH—X—CO—Y—Z, and a hydrogel of the same. In the formula, X is a C1-10 divalent hydrocarbon group, Y is a divalent group derived from polyalkylene oxide having oxygen atoms at both ends, and Z is a C1-24 hydrocarbon group or —CO—R4, where R4 is a C1-23 hydrocarbon group. The hydrogel has excellent viscoelasticity and can be injected into prescribed sites with injecting devices such as syringes, and it can thus be utilized as a medical gel or adhesion barrier.Type: GrantFiled: December 17, 2008Date of Patent: April 29, 2014Assignee: Teijin LimitedInventors: Hiroaki Kaneko, Nobuyuki Endo, Masaya Ito
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Publication number: 20110129505Abstract: The invention is a cellulose derivative wherein some of the carboxyl groups of the cellulose derivative carboxymethylcellulose are replaced with —CO—NH—X—CO—Y—Z, and a hydrogel of the same. In the formula, X is a C1-10 divalent hydrocarbon group, Y is a divalent group derived from polyalkylene oxide having oxygen atoms at both ends, and Z is a C1-24 hydrocarbon group or —CO—R4, where R4 is a C1-23 hydrocarbon group. The hydrogel has excellent viscoelasticity and can be injected into prescribed sites with injecting devices such as syringes, and it can thus be utilized as a medical gel or adhesion barrier.Type: ApplicationFiled: December 17, 2008Publication date: June 2, 2011Applicant: TEIJIN LIMITEDInventors: Hiroaki Kaneko, Nobuyuki Endo, Masaya Ito
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Patent number: 7015281Abstract: The invention concerns alkali-stable hydrophilic sorbents for ion-exchange chromatography. The invention is characterized in that it consists in using as base material a crosslinked vinyl polymerconsisting of vinyl monomers containing diol groups and crosslinking monomers whereof the polymerizable groups are bound by carbonamide-containing chains. Monomers containing ionic groups are grafted on said base material using cerium (IV) salts.Type: GrantFiled: September 9, 2002Date of Patent: March 21, 2006Assignee: Merck Patent GmbHInventors: Lothar Britsch, Karl-Heinz Derwenskus
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Patent number: 6372902Abstract: Polysaccharides, including hydroxyethyl cellulose, having alkyl-aryl hydrophobic substitution, provide latex compositions, such as paints, with improved rheology and stability. Improved processes for producing such polysaccharides are also provided.Type: GrantFiled: December 23, 1994Date of Patent: April 16, 2002Assignee: Union Carbide CorporationInventors: Emmett Malone Partain, III, George Lewis Brode, II, Richard Charles Hoy
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Patent number: 6372901Abstract: Polysaccharides, including hydroxyethyl cellulose, having alkyl-aryl hydrophobic substitution, provide latex compositions, such as paints, with improved rheology and stability. Improved processes for producing such polysaccharides are also provided.Type: GrantFiled: June 7, 1995Date of Patent: April 16, 2002Assignee: Union Carbide CorporationInventors: Emmett Malone Partain, III, George Lewis Brode, II, Richard Charles Hoy
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Cellulose ethers containing butenyl groups and use thereof as protective colloids in polymerizations
Patent number: 6111011Abstract: Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses which are additionally substituted by butenyl groups are used as protective colloids in the preparation of aqueous polymer dispersions.Type: GrantFiled: November 19, 1998Date of Patent: August 29, 2000Assignee: Clariant GmbHInventors: Reinhard Doenges, Rudolf Ehrler, Horst Wurm -
Patent number: 5994531Abstract: Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses having an average degree of polymerization of less than 900 which is substituted by, on average, from 0.01 to 0.04 2-propenyl groups per anhydroglucose unit are used as protective colloids in the preparation of aqueous polymer dispersions.Type: GrantFiled: March 2, 1998Date of Patent: November 30, 1999Assignee: Clariant GmbHInventors: Reinhard Doenges, Rudolf Ehrler, Horst Wurm
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Patent number: 5814141Abstract: The invention relates to a liquid crystalline, photo cross-linkable main-chain polymer used as interferentially effective, chromophoric substance for colored paints, in which the main mesogenic groups are disposed at least approximately in a chiral-nematic manner. An etherified cellulose ether or a mixture of several etherified cellulose ethers is used pursuant to the invention as liquid crystalline main-chain polymer or polymers wherein:the cellulose ethers have a molecular weight of 500 to 1,000,000,the anhydroglucose units of the cellulose ethers are etherified with an average degree of molar substitution of 2 to 7 with propylene oxide or ethylene oxide units (C.sub.3 H.sub.6 O- or C.sub.2 H.sub.4 O-units), andthe cellulose ethers are etherified with an average degree of molar substitution of 1.5 to 3 with unsaturated hydrocarbon groups (C.sub.r H.sub.2r-1).Type: GrantFiled: November 27, 1996Date of Patent: September 29, 1998Assignee: Daimler-Benz AGInventors: Martin Kirschbaum, Maria-Theresia Sailer, Fritz Dannenhauer, Hartmut Seliger
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Patent number: 5612321Abstract: Grafted polysaccharide compositions comprising polysaccharides grafted with antioxidants on at least one hydroxyl group of the polysaccharide. The use of antioxidant grafted polysaccharides or antioxidant grafted crosslinked polysaccharides as a treatment for arthritis, as a drug delivery vehicle, to reduce the incidence of post-operative adhesion formation, to promote the healing of chronic wounds and ulcers, and as a component of cosmetic formulations.Type: GrantFiled: June 22, 1995Date of Patent: March 18, 1997Assignee: Hercules IncorporatedInventor: Tuyen T. Nguyen
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Patent number: 5583214Abstract: Cellulose ether derivatives comprising a hydrophobic substituent having an unsaturated alkyl portion are disclosed. The unsaturation in the alkyl portion of the hydrophobic substituent can promote crosslinking of the cellulose ether derivative. The cellulose ether derivatives are useful as ingredients in latex compositions. The cellulose ether derivatives can provide associative thickening and rheological properties to latex composition during storage and application. In addition, after the latex composition is applied to the surface to be coated, the cellulose ethers of the present invention can promote crosslinking of the latex film to provide a hard and durable coating. Latex paint compositions comprising the cellulose ether derivatives of the present invention are also disclosed.Type: GrantFiled: June 5, 1995Date of Patent: December 10, 1996Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Emmett M. Partain, III
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Patent number: 5426182Abstract: Polysaccharides, including hydroxyethyl cellulose, having complex hydrophobic group substitution, provide latex compositions, such as paints, with improved rheology and stability. Improved processes for producing such polysaccharides are also provided.Type: GrantFiled: May 29, 1992Date of Patent: June 20, 1995Assignee: Union Carbide Chemical & Plastics Technology CorporationInventors: Richard D. Jenkins, David R. Bassett, Gregory D. Shay
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Patent number: 5294702Abstract: This invention relates to water-soluble polymerisable 3-allyloxy-2-hydroxypropylethers of cellulose and to a process for their preparation.Type: GrantFiled: October 2, 1992Date of Patent: March 15, 1994Assignee: Wolff Walsrode AGInventors: Jorn Breckwoldt, Klaus Szablikowski
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Patent number: 5196527Abstract: This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.Type: GrantFiled: February 4, 1992Date of Patent: March 23, 1993Assignee: Kanebo Ltd.Inventors: Shigeru Ookuma, Kouei Igarashi, Masami Hara, Kazuhiro Aso, Hideo Yoshidome, Hiroshi Nakayama, Keizo Suzuki, Kazuhiko Nakajima
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Patent number: 5124445Abstract: Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less than 1% by weight soluble in water. Hydroxyethylcellulose is a preferred water soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effects compared to their unmodified cellulose ether counterparts, and provide good leveling and sag resistance in latex paints. Preferred alkylaryl groups are nonylphenyl, dodecylphenyl, and dinonylphenyl. Included are cellulose ethers with spacer groups of various lengths between the alkylaryl group and the connecting group to the cellulose molecule.Type: GrantFiled: May 17, 1991Date of Patent: June 23, 1992Assignee: Aqualon CompanyInventors: Ernst K. Just, Thomas G. Majewicz, Arjun C. Sau
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Patent number: 5120838Abstract: Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less then 1% by weight soluble in water. Hydroxyethylcellulose is a preferred water soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effects compared to their unmodified cellulose ether counterparts, and provide good leveling and sag resistance in latex paints. Preferred alkylaryl groups are nonylphenyl, dodecylphenyl, and dinonylphenyl. Included are cellulose ethers with spacer groups of various lengths between the alkylaryl group and the connecting group to the cellulose molecule.Type: GrantFiled: October 30, 1989Date of Patent: June 9, 1992Assignee: Aqualon CompanyInventors: Ernst K. Just, Thomas G. Majewicz, Arjun C. Sau
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Patent number: 5093488Abstract: A modified cellulose and/or chitin for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, R"' denotes R, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and r=0 to 1. A process for preparation of the cellulose and/or chitin derivatives is also disclosed.Type: GrantFiled: October 19, 1990Date of Patent: March 3, 1992Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 5093489Abstract: A modified cellulose and/or chitin for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein Cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, Z corresponds to the following groups of atoms: SR", SO.sub.3 H and salts thereof, SO-R, SONR".sub.2, SO.sub.2 -R, SO.sub.2 NR".sub.2, SO.sub.2 H and salts thereof, F, Cl, Br, I, NR".sub.2, PR".sub.2, PO.sub.3 H.sub.2 and salts thereof, PO.sub.2 H(OR), PO(OR).sub.2, PO.sub.2 HR" and salts thereof, POR"(OR) and POR".sub.2, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and z=0.01 to 0.45. A process for preparation of the cellulose and/or chitin derivatives is also disclosed.Type: GrantFiled: October 19, 1990Date of Patent: March 3, 1992Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 5093486Abstract: A modified cellulose and/or chitin for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is unmodified cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, m=0.75 to 2.85, and x=0.005 to 2.10. A process for preparation of the cellulose and/or chitin derivatives is also disclosed.Type: GrantFiled: October 19, 1990Date of Patent: March 3, 1992Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 5055570Abstract: A cellulose derivative comprising substitution-modified cellulose regenerated from a cuprammonium solution, the substituents being ester groups, wherein the acyl group represents one or more, optionally substituted, carbon chains with 10-36 carbon atoms, or a residue containing at least one aromatic and/or heterocyclic, optionally substituted, ring, or wherein the substituents are carbamate groups, the carbamoyl group of which represents a group containing one or more, optionally substituted, carbon chains with 2-36 carbon atoms, or a group containing at least one aromatic and/or heterocyclic, optionally substituted, ring. A dialysis membrane made from the substitution-modified cellulose, typically in the form of a flat film, a tubular film, or a hollow filament, is also disclosed.Type: GrantFiled: August 4, 1989Date of Patent: October 8, 1991Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 5008385Abstract: Cellulose derivatives are disclosed which have the following formula: ##STR1## wherein Z is selected from the group consisting of alkylene, alkenylene, alkynylene, cycloalkylene or benzylene or xylylene radicals, which may or may not be substituted;X is selected from the group consisting of --H, --NR.sub.2, --N.sup.+ R.sub.3, --CN, --COOH, --SO.sub.3 H, --SO.sub.3 H, --PO(OR).sub.2, CONR.sub.2 or --Si(OR).sub.3 ;R is selected from the group consisting of hydrogen, alkyl and alkenyl groups having from 1 to 25 carbon atoms, and cycloalkyl, tolyl and phenyl groups;Y is selected from the group consisting of alkyl, alkenyl, alkynyl groups having from 1 to 36 carbon atoms, which may or may not be substituted, cycloalkyl, phenyl, tolyl and benzyl groups, ##STR2## (--CH.dbd.CH--COOH), and NHR, where R has the same meaning as in X, andm=0 to 2.5n=0.01 to 2.95,with the provision that, when m=0, n.gtoreq.1.55, if Y is an alkyl radical with 1 to 5 carbon atoms, 3-(CH.sub.2).sub.Type: GrantFiled: July 15, 1988Date of Patent: April 16, 1991Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 4997935Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, R"' denotes R, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and r=0 to 1. A process for preparation of the cellulose derivatives is also disclosed.Type: GrantFiled: February 27, 1989Date of Patent: March 5, 1991Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 4992538Abstract: Silated polysaccharides having 0.0005 to 2.0 silyl molar substitution per anhydrosaccharide unit form water resistant films when cast from aqueous solution and dried in the presence of atmospheric carbon dioxide. These films are soluble in aqueous caustic. A preferred water soluble polymer is a cellulose ether with 0.005 to 1.0 silyl substitution.Type: GrantFiled: June 5, 1989Date of Patent: February 12, 1991Assignee: Aqualon CompanyInventor: Arjun C. Sau
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Patent number: 4981960Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein Cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, Z corresponds to the following groups of atoms: SR", SO.sub.3 H and salts thereof, SO-R, SONR".sub.2, SO.sub.2 -R, SO.sub.2 NR".sub.2, SO.sub.2 H and salts thereof, F, Cl, Br, I, NR".sub.2, PR".sub.2, PO.sub.3 H.sub.2 and salts thereof, PO.sub.2 H(OR), PO(OR).sub.2, PO.sub.2 HR" and salts thereof, POR"(OR) and POR".sub.2, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and z=0.01 to 0.45. A process for preparation of the cellulose derivatives is also disclosed.Type: GrantFiled: February 27, 1989Date of Patent: January 1, 1991Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 4981959Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is unmodified cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, m=0.75 to 2.85, and x=0.005 to 2.10. A process for preparation of the cellulose derivatives is also disclosed.Type: GrantFiled: February 27, 1989Date of Patent: January 1, 1991Assignee: Akzo N.V.Inventor: Michael Diamantoglou
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Patent number: 4582899Abstract: A manufacturing method for cellulose ether having a high degree of substitution characterized in that an etherifying agent represented by a general formula RCH.sub.2 X (where R is aromatic group, heterocyclic group, vinyl group or ethynyl group or the same group substituted and X is chlorine or bromine) is reacted with a uniform solution of cellulose acetate having a degree of substitution of 2.0 and over in an organic solvent in the presence of a base to manufacture a highly substituted cellulose ether having a degree of substitution of 2.0 and over per anhydrous glucose unit by a one stage reaction at a good yield.As a general method for manufacturing cellulose ether, a method for reacting an etherifying agent with alkali cellulose is now in use. For the general method, several improved methods have been proposed. However, it is difficult to manufacture cellulose ether having a degree of substitution of 2.5 and over by a one stage reaction using the general method.Type: GrantFiled: April 8, 1985Date of Patent: April 15, 1986Assignee: Daicel Chemical Industries, Ltd.Inventor: Hiroyuki Nakamura
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Patent number: 4078140Abstract: The invention relates to a new substance, namely 2,3-di-(2,3-diiodopropoxy)-propyl cellulose and to the production of the same by the action of a dihalogenopropyl ether of cellulose with an alkali metal allylate with iodine addition to the resulting 2,3-di-allyloxy propyl cellulose.Type: GrantFiled: June 23, 1977Date of Patent: March 7, 1978Assignee: Neste OyInventors: Alain Roman, Jean-Pierre Sachetto, Manfred Wust, Sergio Cuccolo
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Patent number: RE34904Abstract: Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less than 1% by weight soluble in water. Hydroxyethylcellulose is a preferred water soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effects compared to their unmodified cellulose ether counterparts, and provide good leveling and sag resistance in latex paints. Preferred alkylaryl groups are nonylphenyl, dodecylphenyl, and dinonylphenyl. Included are cellulose ethers with spacer groups of various lengths between the alkylaryl group and the connecting group to the cellulose molecule.Type: GrantFiled: July 8, 1993Date of Patent: April 11, 1995Assignee: Hercules IncorporatedInventors: Ernst K. Just, Thomas G. Majewicz, Arjun C. Sau