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Class 536/68 - Propionates, butyrates or isobutyrates


Subclass of Class 536 - Organic compounds -- part of the class 532-570 series
Definition: Compounds in which the carboxylic acid moiety is either
No. of patents: 43
Last issue date: 04/24/2007


1    
NumberTitleIssue Date
7208592Process for alkali saponification of cellulose ester film surface
A process for alkali saponification of polymer film is disclosed. The process comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, and washing away the alkaline solution from the film....
04/24/2007
7189464Cellulose acylate film and producing method thereof
In a multi-layer structure of a cellulose acylate film, the averaged degree of acylation of surface layers is controlled in the range of 0.5 to 2.8 by mixing several sorts of cellulose acylates having different averaged degrees of acyation. One of the surface layers...
03/13/2007
7122660Cellulose acetate and dope containing the same
Using the dope containing the following cellulose acetate (1), (2), or (3), a film is prepared by the casting process: (1) a cellulose acetate having carboxyl groups binding to at least one member selected from the group consisting...
10/17/2006
7041417Imaging process and products providing durable assemblages
This invention relates to an image receiving layer (22) of a receiver element (20) for laser-induced thermal transfer imaging processes. The image receiving layer (22) is made from a formulation containing a caprolactone polymer and a cellulose ...
05/09/2006
7026470Use of carboxymethyl cellulose acetate butyrate as a precoat or size for cellulosic man-made fiber boards
A method for improving holdout on a coated, cellulosic substrate, such as a man-made fiber board. The process comprises the steps of applying an aqueous carboxymethyl cellulose acetate butyrate size composition to a man-made fiber substrate, forming a sized substrat...
04/11/2006
7015200Gamma-hydroxybutyrate compositions containing carbohydrate, lipid or amino acid carriers
The present invention provides compositions comprising at least one GHB moiety bonded to at least one physiologically compatible carrier molecule. The compositions can enhance the uptake of the drug, deliver effective therapeutic doses in a time-delayed fashion, or ...
03/21/2006
6897303Process for producing cellulose acylate film
A cellulose acetate film is produced from a solution of a cellulose acylate in a mixed solvent. The mixed solvent comprises a main solvent and an alcohol. The mixed solvent essentially does not contain chlorine atom. The main solvent comprises an ester and a ketone....
05/24/2005
6852852Method of producing regioselectively substituted esters of oligo- and polysaccharides
A method of producing a cellueose ether that is predominantly substituted in the C2 position of the anhydroglucose unit of the cellulose is described. The regioselectively substituted saccharide ester produced according to the method of the present invention is sele...
02/08/2005
6712896Cellulose ester film, optical film, polarizing plate, optical compensation film and liquid crystal display
A cellulose ester film comprises (a) an ultraviolet absorbent polymer having at least one of repeating units represented by formulae (1) and (2) and repeating units having ultraviolet absorbent structures represented by formulae (3), (4) and (5), (b) an ultraviolet ...
03/30/2004
6489468Regioselectively substituted esters of oligo- and polysaccharides and a method of producing them
A regioselectively substituted member selected from the group consisting of oligo-saccharide ester and polysaccharide ester is disclosed. The ester has a partial average degree of substitution AS at the C2 position of its anhydroglucose unit of at least 9...
12/03/2002
6407224Catalytic system for cellulose acylation process for producing said catalytic system, and for its practical application
A catalytic system for cellulose acylation includes an adduct of sulfuric acid with N,N-dimethylacetamide, free sulfuric acid or free N,N-dimethylacetamide with the following mole ratio of the components: adduct:1.0; free sulfuric acid, max:0.49; or free ...
06/18/2002
6139785Cellulose ester composition
The present invention provides a cellulose ester composition, containing 1 to 99% by weight of cellulose triacetate prepared by substituting hydroxyl groups of cellulose with acetyl and having a degree of substitution with acetyl, DSace, which satisfies t...
10/31/2000
6063752Acylated carboxyl alkyl saccharides, method for manufacture and use thereof in detergents
Acylated carbohydrates with at least one carboxyalkyl group etherified with the carbohydrate of the following general formula KH(--O--CHR1 --(CH2)p --(COOH or COO-))n (--O--CO--R2)m, ...
05/16/2000
5973139Carboxylated cellulose esters
A process for preparing a carboxylated cellulose ester from oxidized cellulose is described. The carboxylated cellulose esters have improved solvent solubility and coating resin compatibility when compared to cellulose esters made from regular grade cellu...
10/26/1999
5717087Thermoplastic 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
5674999Process for preparing readily dispersible water-soluble cellulosic polymers
An improved process for surface treating water soluble cellulosic polymers with crosslinking agents to provide products which are more readily dispersible in cold water, and have longer viscosity delay times than can be achieved with polymers treated in l...
10/07/1997
5597912Process for preparing cellulose esters by use of carboxylic acids
Process for reducing the degree of substitution of cellulose esters employing carboxylic acids as solvolysis promoters is disclosed. Exemplary cellulose esters are cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate propionate, ...
01/28/1997
5488102Polymerisable 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
5192444Separating with an agent comprising an aliphatic ester of a polysaccharide
A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of opti...
03/09/1993
5142034Cellulose ester compositions and process for the preparation thereof
Process for reducing the degree of substitution of cellulose esters employing Lewis acids as solvolysis promoters is disclosed. Novel low degree of substitution cellulose esters produced by the invention process are also described....
08/25/1992
5093486Modified 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
5093488Modified 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
5093489Modified 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
5026841Process for the preparation of finely divided porous cellulose particles
Process for the preparation of finely divided porous cellulose in the form of essentially spherical particles by formation of a suspension, in which an organic solution of a cellulose ester of aromatic or aromatic-aliphatic carboxylic acids containing a C...
06/25/1991
5008385Cellulose derivatives and fibers and membranes made therefrom
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; ...
04/16/1991
4997935Modified cellulose for biocompatible dialysis membranes III and process for preparation thereof
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'...
03/05/1991
4981959Modified cellulose for biocompatible dialysis membranes II and process for preparation thereof
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...
01/01/1991
4981960Modified cellulose for biocompatible dialysis membranes IV and process for preparation thereof
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'...
01/01/1991
4935458Release agent and composite material having cured release agent layer
A release agent comprising a polyfunctional alkoxysiloxane and an organic compound which is solid at room temperature and contains a functional group capable of reacting with said polyfunctional alkoxysiloxane, and a composite material comprising a substr...
06/19/1990
4786415Separation agent comprising aliphatic ester of polysaccharide
A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of opti...
11/22/1988
4590265Carboxylated cellulose ester and manufacture thereof
The present invention provides a novel cellulosic material and a process for preparing the same. The cellulosic material is a carboxylated cellulose ester material having an acid number of at least about 5, an inherent viscosity of from about 0.01 to abou...
05/20/1986
4543409Water-insoluble fibers of cellulose acetate, cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids
The invention refers to water-insoluble fibers of cellulose acetate cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids and to a process for their preparation....
09/24/1985
4480090Process for esterification of cellulose using as the catalyst the combination of sulfuric acid, phosphoric acid and a hindered aliphatic alcohol
The present invention relates to a method of preparing lower fatty acid esters of cellulose which comprises esterifying at a temperature of between about 75° C. and about 110° C. a cellulose compound having esterifiable hydroxyl groups with an esterifyi...
10/30/1984
4461892Process for preparing porous spherical cellulose particles
A process for preparing porous, spherical cellulose particles which comprises suspending a cellulose organic ester solution dissolved in a chlorinated hydrocarbon solvent into an aqueous medium to form droplets of the solution, evaporating the chlorinated...
07/24/1984
4390691Process for preparing porous spherical cellulose particles
A process for preparing porous, spherical cellulose particles which comprises suspending a cellulose organic ester solution dissolved in a chlorinated hydrocarbon solvent into an aqueous medium to form droplets of the solution, evaporating the chlorinated...
06/28/1983
4362868Plasticized cellulose polymers
Plasticized cellulose polymers comprise a base polymer having a chain of ଲ-anhydroglucose units joined by ether linkages and having ether substituents, with at least one of the units being additionally substituted, by esterification of at least one ...
12/07/1982
4166809Cellulose propionate n-butyrate and coating compositions containing same
Cellulose propionate n-butyrate adapted to be mixed with an oil-modified alkyd resin to form a coating composition. The cellulose propionate n-butyrate has unique properties as an ingredient in such coating composition. The cellulose ester has a n-butyryl...
09/04/1979
4140135Hydrophobic coating for tobacco sheet material
This invention provides coated tobacco product having a hydrophobic coating on at least one surface thereof, the coating comprising a cellulose propionate having an acetyl content of less than about 6% by weight, a hydroxyl content of at least 1.5% by wei...
02/20/1979
4116549Contact lens
Disclosed is a cellulose ester contact lens having a medically acceptable warpage tolerance....
09/26/1978
4038253Photocross-linkable polymers containing pendant diazoester groups
It has been found that certain polymers containing pendant diazo ester groups are photosensitive and have utility in the preparation of both lithographic and relief printing plates, as well as for etching resists for printed circuits. This is a continuati...
07/26/1977
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