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| Number | Title | Issue Date |
| 7301041 | Bi-functional metallocenes, preparation process and use in the labeling or biological molecules The invention relates to bi-functionalised metallocenes of general formula (I) where Me=a transition metal, preferably chosen from Fe, Ru and Os, Y and Z, when identical are selected from —(CH2)n—O—, (CH2)—O—[(CH2 | 11/27/2007 |
| 7138132 | Hydrogel entrapping therapeutic agent and stent with coating comprising this A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by fre... | 11/21/2006 |
| 7125991 | Compounds derived from benzoic acid esters, composition containing said compounds and use thereof The invention relates to novel compounds of formula (I) wherein R1 represents a polymer, aryl or alkyl group, R2 represents a hydrogen atom, a halogen atom, a radical CN, CF3, OH, OCF3, COOH, R7, OR7 ... | 10/24/2006 |
| 7091192 | Linear cyclodextrin copolymers Linear cyclodextrin copolymers and linear oxidized cyclodextrin copolymers containing an unoxidized and/or an oxidized cyclodextrin moiety integrated into the polymer backbone are described. Methods of preparing such copolymers are also described. The linear cyclode... | 08/15/2006 |
| 7026471 | Purification method of hydroxypropylmethyl cellulose phthalate The present invention relates to a purification method of hydroxypropylmethyl cellulose phthalate, more particularly to a method of preparing high-purity hydroxypropylmethyl cellulose phthalate through a simple crushing process which comprises: increasing fluidity o... | 04/11/2006 |
| 6936136 | Amino-functionalized pulp fibers The disclosed invention is directed to pulp fibers suitable for forming a wet-laid paper product which include amino-functionality which is non-extractable in an aqueous phase. The pulp fibers may be prepared by applying an amino-functional additive to a fibrous web... | 08/30/2005 |
| 6916857 | Hydrogel-forming system with hydrophobic and hydrophilic components A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide (e.g. dextran) containing hydroxy groups which are reacted with unsaturated group introducing compound, is con... | 07/12/2005 |
| 6907885 | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highl... | 06/21/2005 |
| 6905700 | Hydrogel entrapping therapeutic agent and stent with coating comprising this A hydrogel forming system which comprises a hydrophobic macromer with unsaturated group terminated ends and a hydrophilic polymer which is a polysaccharide containing hydroxy groups which are reacted with unsaturated group introducing compound, is convertible by fre... | 06/14/2005 |
| 6844003 | Compounds derived from benzoic acid esters, composition containing said compounds and use thereof The invention relates to novel compounds of formula (I) wherein R1 represents a polymer, aryl or alkyl group, R2 presents a hydrogen atom, a halogen atom, a radical CN, CF3, OH, OCF3, COOH, R7, OR7 or... | 01/18/2005 |
| 6800754 | Method for producing cellulose sulfoacetate derivatives and products and mixtures thereof A method for directly producing a mixture of cellulose sulfoacetate derivatives by esterification of cellulosic material, characterized in that it comprises the following steps i) the cellulosic material is suspended in a glacial acetic acid solution and the excess ... | 10/05/2004 |
| 6737524 | Activated polyethylene glycol compounds Novel arylisothiocyanate compounds are described that are useful for activating alcohol-containing macromomolecules, for example polyethyleneglycols and cellulose, for covalent linkage to amino-groups of biomolecules, for example polypeptides such as antibodies, enz... | 05/18/2004 |
| RE38484 | Cationized hydroxyalkylcellulose and process for producing the same Cationized hydroxyalkylcelluloses, which are highly compatible with surfactants, are represented by the following formula (I): wherein R1, R2 and R3 represent a hydrogen atom or a group represented ... | 03/30/2004 |
| 6624298 | Esterified polysaccharide products and ଲ-lactone ring opened ketene dimer products containing the compositions, and process of making the same Esterified polysaccharides and the process of making such products are disclosed. The process can be enzymatic where an enzyme is used as a catalyst for the reaction. The process can also be chemical where no enzyme is used. Novel Products are obtained th... | 09/23/2003 |
| 6369214 | Method of dispersing a pigment Disclosed are a method of dispersing a pigment, a pigment dispersion, a coating composition comprising said pigment dispersion, an method of making a coating composition, and a method of improving the appearance of a coating composition. The pigment dispe... | 04/09/2002 |
| 6362330 | Polysaccharide-based thermoplastic material, process for preparing the same and method of use thereof The present invention relates to novel thermoplastic materials based on polysaccharide ethers which are simultaneously substituted by carboxylic acid ester groups and carbamate groups, together with mixtures of such derivatives with low molecular weight a... | 03/26/2002 |
| 6303315 | One step sample preparation and detection of nucleic acids in complex biological samples A method for simultaneous release and detection of nucleic acids from complex biological samples is described. The invention relates to the combined use of lysis buffers containing strong chaotropic agents such as guanidine thiocyanate to facilitate cell ... | 10/16/2001 |
| 6242595 | Process for the recovery of cellulose carbamate The present invention comprises a process for the recovery from a reaction mixture of cellulose carbamate produced by conversion of cellulose with excess urea in an inert organic liquid reaction carrier, wherein the reaction mixture is treated with added ... | 06/05/2001 |
| 6229007 | Amine functional cellulose ester compounds and methods of making the same Disclosed are amine functional cellulose ester resins and methods of making the same. The amine functional cellulose ester resins comprise at least one repeat unit of the structure: ##STR1## wherein R1, R2, and R3 are sele... | 05/08/2001 |
| 6197950 | Cationized hydroxyalkylcellulose and process for producing the same Cationized hydroxyalkylcelluloses, which are highly compatible with surfactants, are represented by the following formula (I): ##STR1## wherein R1, R2 and R3 represent a hydrogen atom or a group represented by the formula ... | 03/06/2001 |
| 6184272 | Fiber-reinforced molded plastic part and process for its manufacture A fiber-reinforced molded plastic part, a process for its manufacture and a use. The fiber-reinforced molded plastic part consists of a plastic matrix with natural fibers particularly arranged in a uniformly distributed manner in the plastic matrix. The p... | 02/06/2001 |
| 6133439 | Environmentally non-persistant cellulose ester fibers This invention provides cellulose ester fibers having an intermediate degree of substitution per anhydroglucose unit (DS/AGU) along with pigments which act as photooxidation catalyst. The fibers are useful as filler materials for tobacco products. The fil... | 10/17/2000 |
| 6054545 | Modified cellulose compound and photopolymerizable resin composition containing the same A modified cellulose compound and a photopolymerizable resin composition containing the same are disclosed, the modified cellulose compound being obtained by reacting a hydroxyl group of cellulose or a cellulose derivative with an isocyanate group of a sp... | 04/25/2000 |
| 5945547 | Imtermediate in process to make 2', 2'-difluoronucleosides The compound 2-deoxy-2,2-difluoro-D-erythro-pentofuranos-1-ulose-3,5-dibenzoate is described and claimed.... | 08/31/1999 |
| 5906926 | Method for modified manufacture of cellulose carbamate A method for the manufacture of cellulose carbamate, whereby cellulose pulp is preliminarily activated by alkaline, hydrothermal and/or enzymatic treatment, then the activated cellulose pulp is mixed with aqueous urea solution, the water in the solution r... | 05/25/1999 |
| 5859217 | Process for producing polymerization sugar esters Disclosed are a polymerizable sugar ester of the formula shown below and a process for the production thereof: S(OH)q-1 --OOC--R--COOCH.dbd.CH2 wherein S(OH)q-1, represents a sugar residue obtained by removing one hydroxyl grou... | 01/12/1999 |
| 5831076 | Production of cellulose carbamate with improved solubility properties The invention comprises a process for producing cellulose carbamate with improved solubility properties comprising converting cellulose with urea in an inert, liquid, organic reaction carrier, at reaction temperature in the range of 80° to 180° C. where... | 11/03/1998 |
| 5717087 | Thermoplastic and biodegradable polysaccharide esters/polysaccharide ether esters containing maleic acid addition product groups The present invention relates to thermoplastic and biodegradable polysaccharide esters/polysaccharide ether esters, which are characterised in that they can be represented by the general structure ##STR1## wherein Polysaccharide-O represents the subs... | 02/10/1998 |
| 5556773 | Method and apparatus for nested polymerase chain reaction (PCR) with single closed reaction tubes A nested polymerase chain reaction (PCR) performed in a single reaction tube that remains closed after the reaction mixtures for each amplification have been introduced therein. The reaction mixture for the second PCR amplification is sequestered and pres... | 09/17/1996 |
| 5552485 | Ethylenically unsaturated polymeric alkoxysilanes useful for treating fluoroaluminosilicate glass Fluoroaluminosilicate dental cement glasses are treated with an aqueous silanol treating solution and optionally with an additional organic compound. The treated glasses form cements with improved strength. The silanol can be ethylenically-unsaturated and... | 09/03/1996 |
| 5502178 | Methods for producing amidated or aminated water soluble cellulose acetates A method is disclosed of preparing amidated water soluble cellulose acetates by amidating water soluble cellulose acetate. Methods are also provided for preparing aminated water soluble cellulose acetates of varying plasticities, film- and fiber-forming c... | 03/26/1996 |
| 5488102 | Polymerisable carbohydrate esters, polymers therefrom and their use Compounds of formulae I and Ia R--Y--CO--R3 --CO--O--A (I), R--Y--CO--R3 --CO--O--CH2 --A1 (Ia), wherein R is a radically polymerisable hydrocarbon group, R3 is a direct bo... | 01/30/1996 |
| 5378827 | Process for the production of cellulose carbamate A process for the production of cellulose carbamate from cellulose and urea through the conversion of the cellulose with excess urea in an inert liquid organic reaction carrier at a temperature in the range of 130 ° to 160° C., separation of the reactio... | 01/03/1995 |
| 5292873 | Nucleic acids labeled with naphthoquinone probe A sequence directed reagent is constructed by conjugating a methyl naphthoquinone derivative to a hexamethylamino linker attached to the 5' terminus of an oligonucleotide. Annealing this modified fragment of DNA to its complementary sequence allows for ta... | 03/08/1994 |
| 5284885 | Aqueous nitrocellulose compositions The present invention comprises aqueous nitrocellulose compositions and methods of their making. The compositions of the invention provide coatings and can be employed as nail coatings, protective coatings and non-wax polishes.... | 02/08/1994 |
| 5229506 | Preparation of cellulose aminomethanate An improvement to the process for synthesizing cellulose aminomethanate is disclosed which comprises slurring cellulose in low concentrations of aqueous caustic solutions, in the presence of urea, and steeping the slurried mixture, at from about 2° C. to... | 07/20/1993 |
| 5093488 | Modified chitin for biocompatible dialysis membranes III and process for preparation of modified cellulose and modified chitin for use therewith 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... | 03/03/1992 |
| 5093489 | Modified chitin for biocompatible dialysis membranes IV and process for preparation of modified cellulose and modified chitin for use therewith 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... | 03/03/1992 |
| 5093486 | Modified chitin for biocompatible dialysis membranes II and process for preparation of modified cellulose and modified chitin for use therewith 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 ... | 03/03/1992 |
| 5071892 | Desensitized nitrocellulose mixtures Improved nitrocellulose mixtures contain a polyol as the desensitizing agent, the polyol being a solvent for nitrocellulose, soluble in water to a maximum of 10% at 20° C. and non-volatile.... | 12/10/1991 |
