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Class 536/49 - Ether-esters or mixed esters


Subclass of Class 536 - Organic compounds -- part of the class 532-570 series
Definition: Compounds which (1) additionally contain an ether moiety
No. of patents: 28
Last issue date: 04/04/2006


NumberTitleIssue Date
7022836Methods for producing and transforming cassava protoplasts
The invention relates to a method for producing protoplasts of cassava or closely related species, which protoplasts are capable of regeneration into plants. The method comprises producing friable embryogenic callus from explants of cassava or closely related specie...
04/04/2006
6897028Identification of molecular targets
Identification of the molecular targets of a drug or toxin is the first step in understanding how the drug or toxin works, an important advance in learning how to improve a drug or assess the risks due to a toxin. The primary action of a drug usually involves bindin...
05/24/2005
6528629Malto-oligosaccharide derived glycosides
Disclosed is a method for preparing a malto-oligosaccharide derived glycoside. Generally, the method comprises providing a malto-oligosaccharide and glycosylating the malto-oligosaccharide with an alcohol or a thiol under conditions suitable to form a ...
03/04/2003
6063914Method of producing swellable, non-aging starch maleates, biologically degradable starch maleates as well as use
The aging of swellable starch maleates is reduced by reacting with one or more singly and/or multiply functional nucleophiles as in a Michael condensation reaction. Mixtures of mercaptoethanol and 1,2-bis-(2-mercaptoethoxy)-ethane or mixtures of sodium bi...
05/16/2000
6001927Thixotropic paint compositions containing hydrophobic starch derivatives
Latex paint compositions containing water, pigment and a latex wherein the latex is prepared by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of 0.1 to 0.2 pphm of at least one hydrophobically modified starch ha...
12/14/1999
5811236Electrochemiluminescent rhenium moieties and methods for their use
Electrochemiluminiscent moieties having the formula ›Re(P)m (L1)n (L2)o (L3)p (L4)q (L5)r (L6)s !t (B)u
09/22/1998
5776914Prevention of hemolysis
Disclosed are compositions and methods for preventing or substantially inhibiting the hemolytic activity of hemolysis inducing agents. The methods and compositions are based on the use of an anionic oligosaccharide, such as polysulfated cyclodextrin, to a...
07/07/1998
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
5652360Cationic starch composition and process for making same
Disclosed herein is a new cationic starch and cationic starch paste or slurry. The starch paste or slurry has a low cation equivalent value despite its high nitrogen content and also has a low solution viscosity despite its high molecular weight. The cati...
07/29/1997
5278303Polymer-supported solution synthesis of oligosaccharides
This invention relates to the preparation of oligosaccharides, using polymer supported methodology. By this method, which offers anomeric control, oligosaccharides are produced very rapidly in comparison with known methodologies. Thus, there is disclosed ...
01/11/1994
4726809Textile size
A novel starch used in a size composition is disclosed. The novel starch is a quaternary ammonium ether and acyl ester of starch which has a DS of quaternary ammonium ether of between 0.02 to 0.2 and a DS of acyl ester of between 0.01 to 0.3. The size com...
02/23/1988
4683298Process for the preparation of aminated polysaccharide derivatives
A process for preparing an amino deoxy derivative of a polysaccharide. The process comprises oxidizing the polysaccharide with dimethyl sulfoxide in combination with acetic anhydride or acetic anhydride with paraformaldehyde in a first step. The product f...
07/28/1987
4330440Activated matrix and method of activation
The invention relates to the carbonylation of cross linked substituted and unsubstituted polysaccharides, their copolymers with macroporous synthetic polymers, macroporous synthetic polymers and rigid supports with pendant hydroxyalkyl groups. The carbony...
05/18/1982
4296234Absorbent materials
A highly absorbent material, especially suitable for use in absorbent disposable products such as sanitary towels and tampons, consisting of a substantially water-insoluble cross-linked gelatinized starch, in which the degree of substitution of the cross-...
10/20/1981
4272526Derivatives of chloral
The present invention relates to a chloral derivative having the general formula ##STR1## in which Y' is a polysaccharide consisting of a chain of anhydroglucose, modified anhydroglucose or uronic acid units as substituent group and in which R i...
06/09/1981
4260738Novel starch ether derivatives, a method for the preparation thereof
Starch ether derivatives are prepared by reacting a starch base with N-(2-haloethyl)iminobis(methylene)diphosphonic acid or with a N-(alkyl)-N-(2-haloethyl)aminomethylphosphonic acid. The derivatives contain aminophosphonic acid groups (or their salts) as...
04/07/1981
4243479Novel starch ether derivatives, a method for the preparation thereof and their use in paper
Starch ether derivatives are prepared by reacting a starch base with N-(2-haloethyl)iminobis(methylene)diphosphonic acid or with a N-(alkyl)-N-(2-haloethyl)aminomethylphosphonic acid. The derivatives contain aminophosphonic acid groups (or their salts) as...
01/06/1981
4224439Activated matrix and method of activation
Carbonylation of a polysaccharide and the product of that carbonylation. The carbonylated product can be used to prepare an affinity chromatography matrix which is an uncharged species of varying pH's. The carbonylated product is also useful for the prepa...
09/23/1980
4216310Continuous process for phosphorylating starch
Starch is phosphorylated by a virtually pollution-free, continuous process whereby an aqueous reagent solution of a tripolyphosphate, orthophosphate or pyrophosphate salt or a mixture thereof is sprayed onto a moist starch cake on a rotary vacuum filter i...
08/05/1980
4211865Novel prostaglandin precursors in polymeric form
A novel polymer consisting of a macromolecular polysaccharide matrix which is esterified in whole or in part by activated polyunsaturated acids containing twenty carbon atoms. Typical of these acids are, for example, 8, 11, 14-eicosatrienoic acid, 5, 8, 1...
07/08/1980
4167621Method for preparing starch ether derivatives
Starch ether derivatives are prepared by reacting a starch base with about 0.5-100% by weight of a neutralized alkyl ester of 3-chloro-2-sulfopropionic acid, based on dry starch, and then isolating the resultant starch derivative. The 2-sulfo-2-carboxyeth...
09/11/1979
4166173Process for phosphorylating starch in alkali metal tripolyphosphate salts
Starch is phosphorylated by an improved pollution-free process which involves forming a reagent solution of an alkali metal tripolyphosphate salt in water having 20- 36% by weight of the salt dissolved therein, forming a starch cake containing no more tha...
08/28/1979
4155884Process and apparatus for producing modified starch products
A process and apparatus are described for producing modified starch products. In the method of the invention, a slurry of starch is continuously moved at elevated temperature and pressure through a tubular heating zone and the hot fluid mass emerging from...
05/22/1979
4138535Nitrite esters of polyhydroxy polymers
A polysaccharide or polyvinyl alcohol containing a mixture of nitrite ester groups with sulfate or nitrate ester groups with the mixture of ester groups being substantially uniformly distributed among the polymer units of the polysaccharide or polyvinyl a...
02/06/1979
4119487Starch ether derivatives, a method for the preparation thereof and their use in paper
Novel starch ether derivatives are prepared by reacting starch with 3-chloro-2-sulfopropionic acid. The resulting 2-sulfo-2-carboxyethyl starch ether derivatives find use in many applications, but are particularly useful as pigment retention aids in paper...
10/10/1978
4093510Xanthated starch amine paper additives
Novel amphoteric starch derivatives, xanthated starch amines, have been employed as wet-end paper additives for improving both wet and dry strength. They are easily repulpable, readily biodegradable, effective in a broad range of furnish pH's, and are com...
06/06/1978
4029544Method of making a novel starch derivative and the product produced thereby
The use in the manufacture of paper of additives comprising derivatives of starches having particular levels of water fluidity and which contain controlled proportions of cationogenic or cationic substituent groups as well as sulfo-succinate groups. The r...
06/14/1977
4017460Novel starch ethers
A reagent useful for the chemical modification of starch is prepared by the reaction of a 2,3-dihalopropionic acid or alkyl ester thereof with a secondry amine. The reaction of the reagent with starch, carried out in an aqueous solution under controlled c...
04/12/1977
 
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