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Class 536/120 - Ethers


Subclass of Class 536 - Organic compounds -- part of the class 532-570 series
Definition: Compounds having the general formula ROR", wherein
No. of patents: 450
Last issue date: 12/22/2009


                  11    
NumberTitleIssue Date
4177344Anhydro-sugars
The invention relates to novel 1,6-anhydro-ଲ-D-hexopyranose derivatives of the formula I ##STR1## in which R2 is hydrogen, methyl or aromatic acyl, R3 and R4 are alkyl, alkenyl or aralkyl and one of the radicals...
12/04/1979
4175123Amino-sugar derivatives, process for their preparation and pharmaceutical composition thereof
The present invention provides amino-sugar derivatives of the general formula ##STR1## in which n and m independently of each other represent an integer from 0 to 8 and the sum n+m has a value of 0 to 8, and X designates a group --OR, --SH, --SR, --N...
11/20/1979
4174440Ionic pullulan gels and production thereof
A process for producing ionic pullulan gels which comprises gelation of pullulan by crosslinking and introduction of ionic groups into the resulting pullulan gel, the former comprising reacting pullulan with a bi-functional compound in a solvent in the pr...
11/13/1979
4167623Pullulan aminoalkyl ether
Pullulan aminoalkyl ether is obtained by reacting pullulan with an aminoalkylating agent in a solvent in the presence of an alkali. This ether may be used as a cationic polymer of considerable utility in industries. For instance, when used in a paper coat...
09/11/1979
4166172Production of polyether polyol compositions
An improved method for the production of polyether polyol compositions is disclosed wherein a polyhydric initiator is oxyalkylated with alkylene epoxides at lower temperatures in the presence of an aqueous ammonia solution. The polyether polyol compositio...
08/28/1979
4165432Peroxy di-ester polyols
Compounds containing peroxy linkages connecting similar polyol ester constituents are described. These peroxy di-ester polyols are prepared by the direct esterification of peroxy diacids with polyols, in the presence of a strong mineral acid catalyst. The...
08/21/1979
4156776Sucrose derivatives
A novel cyclic acetal derivative of sucrose, 4,6-O-isopropylidenesucrose, is prepared by treating sucrose with 2,2-dimethoxypropane in N,N-dimethylformamide, in the presence of p-toluenesulphonic acid, suitably at room temperature. The product is convenie...
05/29/1979
4147860Process for preparing nitroaromatic glycosides
A process for preparing nitroaromatic glycosides is described. The process comprises contacting an acetylated glycoside of maltotetraose, maltopentaose or maltohexaose with a phenol, nitrating the resulting product to place a NO2 group on the a...
04/03/1979
4146706Polysaccharide and process for the production thereof
Polysaccharides forming gels are produced by cultivating a microorganism such as Arthrobacter carbazolum FERM 2574 in a suitable medium....
03/27/1979
4145527Nitro aromatic glycosides
Nitroaromatic derivatives of glycosides such as maltotetraose, maltopentaose and maltohexaose are described. These compounds are useful as standard substrates for the assay of ଱-amylase either manually or automatically on suitable instruments....
03/20/1979
4145528Process for preparing ଲ-methyldigoxin
Preparation of ଲ-methyldigoxin in the presence of dimethyl formamide, an inert solvent, methyl ester of a sulphuric acid, and strontium hydroxide....
03/20/1979
4143072Process for the purification of polyethers using a tubular coil evaporator
This invention relates to a process for the removal of troublesome secondary products, particularly small quantities of water, solvents, low molecular weight glycols, and pungent-smelling substances, from polyethers by means of a tubular coil evaporator....
03/06/1979
4142042Alkenyl ethers from high molecular weight polyols
Disclosed is a process for preparing alkenyl ethers from high molecular weight polyols in a liquid phase system containing concentrated alkali metal hydroxide, water, water immiscible hydrocarbon solvent and high molecular weight polyol such that the addi...
02/27/1979
4137396Filtration process for purifying polyols
An improvement in the process for the removal of residual catalyst from polyether polyols is achieved by the use of a solvent wash and recovery system....
01/30/1979
4137398Process for the removal of catalyst from polyether polyol
An improvement in the process of alkaline catalyst removal from crude polyoxyalkylene ether polyols is achieved by treating a mixture of crude polyol, adsorbent, and water with magnesium carbonate and carbon dioxide just prior to filtration....
01/30/1979
4133948Monosaccharides and products resulting therefrom
The invention provides novel compounds of the formula: ##STR1## wherein B is ଱- or ଲ- and represents a hydrocarbyl group in which the ଱-carbon atom is activated by a suitable blocked or unblocked functional group rendering it suscep...
01/09/1979
4129718Process for the removal of catalyst from polyether polyol
An improvement in the process of alkaline catalyst removal from crude polyoxyalkylene ether polyols is achieved by treating a mixture of crude polyol, adsorbent, and water with carbon dioxide just prior to filtration....
12/12/1978
4124705Agent for intravascular administration
The present invention relates to an agent for intravascular administration, said agent consisting of a suspension of minute polysaccharide particles having a size such that subsequent to being administered intravascularly, they block the finer blood vesse...
11/07/1978
4122035Process for reclaiming synthetic magnesium silicate or aluminum silicate adsorbents employed in the purification of polyether polyols
A process for recovering a catalyst adsorbent from a polyol-adsorbent residue by treatment of the polyol-adsorbent residue with organic solvents. This adsorbent can then be recycled for use in the further removal of alkaline catalysts from polyether polyo...
10/24/1978
4104463Method for treatment of corn hulls
Corn hulls and like materials are subjected to a treatment to obtain two fractions therefrom comprising a holocellulose fraction and a non-carbohydrate fraction....
08/01/1978
4103006Glycosides of 2,6-bis(hydroxy-phenyl)-3,7-dioxabicyclo [3,3,0] octane
Mono- and di-glycosides of 2,6-bis (hydroxy-phenyl)-3,7-dioxabicyclo [3,3,0] octane and methods for preparing such compounds. The compounds exhibit anti-hypertensive properties....
07/25/1978
4090016Carboxylated pullulan and method for producing same
Carboxylated pullulan obtained by oxidizing pullulan with an oxidizing agent is readily soluble in cold water and has favorable film-forming property, yielding a film having high mechanical strengths, high modulus of elasticity and good transparency....
05/16/1978
4079041Crosslinkable polymeric compounds
The invention relates to organic polymers which can be crosslinked under the action of light and which are suitable for carrying out photomechanical processes. These polymers are photochemically considerably more sensitive than known comparable polymers a...
03/14/1978
4077894Glycol antifreeze mixtures
A glycol-based antifreeze formulation containing as a defoaming agent, from 0.001% to about 1.0% by weight of a mixture containing a compound of the formula ##STR1## WHEREIN R is an alkyl, alkoxyalkyl, hydroxyalkyl, or dihydroxyalkyl group havin...
03/07/1978
4076930Polysaccharide polyols
Hydroxyalkyl ethers of hydroxyalkoxy polysaccharides are prepared by reacting the corresponding polysaccharide first with an epoxide in an aqueous alkaline medium, and then with an epoxide in the presence of a Lewis acid catalyst in a nonaqueous, nonalcoh...
02/28/1978
4069207Brominated ester-containing polyols
Brominated ester-containing polyether polyols are prepared by the sequential reaction of a polyether polyol with 4,5-dibromohexahydrophthalic anhydride or its corresponding diacid and an alkylene oxide. The resulting polyols are particularly useful in the...
01/17/1978
4065616Processes for production of a 1-N-(଱-hydroxy-.PHI.-amino alkanoyl)-3-deoxy-5-O-pentafuranosyl neamine and new compounds produced by the same processes
This invention relates to new processes for the production of a 1-N-(଱-hydroxy-ω-aminoalkanoyl)-3'-deoxy-5-O-pentofuranosylnea mine, including 3'-deoxybutirosins A and B, as a semi-synthetic antibiotic. This invention further relates to new and usef...
12/27/1977
4061684Highly branched polyether polyols of high molecular weight
Highly branched polyether polyols of high molecular weight (such as over 12,000) are made by coupling an alkoxylated polyglycerol, by reaction of the sodium alcoholate of the oxyalkylated polyglycerol with a dibenzenesulfo or ditoluenesulfo ester of a dio...
12/06/1977
4056322Preparation of ethers of monosaccharides
Ethereally substituted monosaccharides are prepared from certain selectively derivatized monosaccharides. In practicing the method: 1. a monosaccharide derivative having the general formula A1 -O-H, wherein O is oxygen, H is hydrogen and A1
11/01/1977
4056672Polymer prepared by cyanhydrin method
The present invention relates to a process for preparing a polymer which is suitable for being administered parenterally from a saccharide, a polyhydric alcohol and a polymerization agent and to the polymer prepared therefrom. The invention relates also t...
11/01/1977
4048127Carbohydrate-based condensation resin
A carbohydrate-phenolic resin and a process for production of same wherein an aldose saccharide, preferably a hexose, is reacted with a phenolic compound and urea in the presence of an acid catalyst to form a solid fusible resin which is curable with cros...
09/13/1977
4048416Thiopolymers, their derivatives and methods for their preparation and use
A method for producing products for separation, ion exchange or as basic material for the preparation of various derivatives designed for separation purposes and adsorption purposes by means of a polymer being activated with a reagent containing at least ...
09/13/1977
4042538Sugar p-vinylbenzoyl ester and copolymers thereof
Monosaccharides and disaccharides in which one or more of the hydroxy groups has been replaced by a p-vinylbenzoyloxy group are provided as new compounds. These may be copolymerized with such monomers as styrene or methyl methacrylate to provide novel cop...
08/16/1977
4038481Method for treatment of corn hulls
Corn hulls are subjected to a treatment to obtain three fractions therefrom comprising a cellulosic fraction, a hemicellulose fraction and a noncarbohydrate fraction. The noncarbohydrate fraction is characterized as being an organic solvent extract compri...
07/26/1977
4031307Cationic polygalactomannan compositions
This invention provides novel quaternary ammonium ethers of polygalactomannan having a degree of substitution between about 0.01 and 3.0, and further provides a process for producing quaternary ammonium ethers of polygalactomannan gums by contacting solid...
06/21/1977
4029886Process for water-insolubilization of molded pullulan
A molded pullulan can be water-insolubilized by treatment with, as the combination of a crosslinking agent with a catalyst, at least one of the combinations of (1) formaldehyde with zinc chloride, (2) glyoxal with magnesium chloride, and (3) formaldehyde ...
06/14/1977
4029879Process for the removal of catalysts from polyether polyols employing water and adsorbent
An improvement in the process of catalyst removal in the preparation of polyether polyols is achieved by adding a critical amount of water from about 1 to about 5 percent by weight based on the weight of polyol to an adsorbent synthetic magnesium silicate...
06/14/1977
4024290Bulking agent for foods
The present invention encompasses a bulking agent suitable for incorporating into formulated foods. The bulking agent of the present invention is prepared by condensation of glucose and sorbitol in the presence of an acid-ion exchange resin. The bulking a...
05/17/1977
4018233Shaped matters of tobaccos and process for producing the same
A shaped matter of tobacco excellent in aroma and flavor is obtained by coating and binding starting tobacco materials with pullulan or a pullulan derivative....
04/19/1977
4017608Therapeutic composition and method of therapeutically treating warm blooded animals therewith
The invention provides a novel therapeutic composition comprising a pharmaceutically acceptable carrier containing a therapeutically effective amount of an ethereal monosubstitution of a monosaccharide derivative having the general formula S-O-Y, wherein ...
04/12/1977
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