Class / Patent application number | Description | Number of patent applications / Date published |
528328000 | From N-C-(C=O)-OH containing reactant or acid derivative thereof, e.g., alpha amino acid, etc. | 9 |
20090118460 | SOLUBLE AROMATIC RANDOM COPOLYIMIDE AND PROCESS FOR PREPARING SAME - A soluble aromatic random copolyimide and a process for preparing same are herein disclosed, wherein the copolyimide is prepared from (a) an aromatic diamine and two or more different aromatic dianhydrides or (b) an aromatic dianhydride and two or more different aromatic diamines; wherein at least one of the diamine or the dianhydride contains a sulfonyl group directly or indirectly linking the two amine moieties in said diamine or the two anhydride moieties in said dianhydride. The copolyimide is soluble at room temperature in polar organic solvents such as N-methyl-2-pyrollidone, N,N-dimethylacetamide, and dimethylformamide, and has a glass transition temperatures below its respective melting points. As such, the copolyimide is more easily solubilized and processed into working forms, while still retaining desirable characteristics such as heat resistance, and may be used in various applications for which aromatic polyimides are known to be useful. | 05-07-2009 |
20110196123 | PROCESS FOR THE PREPARATION OF POLY-alpha-GLUTAMIC ACID AND DERIVATIVES THEREOF - The invention relates to an improved process for the preparation of poly-α-glutamic acids which comprises the polymerization of tertiary γ-esters of α-glutamic acid N-carboxy anhydride with appropriate solvents and initiators, followed by acid hydrolysis of the resulting poly-α-glutamic acid-γ-ester. The process is particularly advantageous in that it allows one to carefully control the molecular weight of the resulting poly-α-glutamic acid. The invention also relates to poly-α-glutamic acids capped at the amino terminus with carboxylic acids or amino acids and to a process for the preparation thereof. | 08-11-2011 |
20130023642 | POLYESTER AMIDE COMPOUND - A polyesteramide compound containing from 50 to 99.9 mol % of an ester unit represented by the following general formula (I), and from 0.1 to 50 mol % of a constituent unit represented by the following general formula (II): | 01-24-2013 |
20130109832 | POLYAMIDE COMPOUND | 05-02-2013 |
20130303723 | MICROORGANISMS AND METHODS FOR THE BIOSYNTHESIS OF ADIPATE, HEXAMETHYLENEDIAMINE AND 6-AMINOCAPROIC ACID - The invention provides a non-naturally occurring microbial organism having a 6-aminocaproic acid, caprolactam, hexametheylenediamine or levulinic acid pathway. The microbial organism contains at least one exogenous nucleic acid encoding an enzyme in the respective 6-aminocaproic acid, caprolactam, hexametheylenediamine or levulinic acid pathway. The invention additionally provides a method for producing 6-aminocaproic acid, caprolactam, hexametheylenediamine or levulinic acid. The method can include culturing a 6-aminocaproic acid, caprolactam or hexametheylenediamine producing microbial organism, where the microbial organism expresses at least one exogenous nucleic acid encoding a 6-aminocaproic acid, caprolactam, hexametheylenediamine or levulinic acid pathway enzyme in a sufficient amount to produce the respective product, under conditions and for a sufficient period of time to produce 6-aminocaproic acid, caprolactam, hexametheylenediamine or levulinic acid. | 11-14-2013 |
20150361219 | BIODEGRADABLE SURFACTANT, PREPARATION METHOD AND USE THEREOF - The invention provides a methoxypoly(ethylene glycol)-poly(lactide) block copolymer capped with phenylalanine group. The block copolymer is represented by formula (I), wherein R is acyl amine group, a=20-200, b=5-50; and molecular weights of the ethoxypoly(ethylene glycol) block component and the poly(lactide) block component respectively range from 1000-5000 and 1000-10000. The preparation method and use of the block copolymer are also provided. | 12-17-2015 |
20150376334 | ANALYSIS OF AMINO ACID COPOLYMER COMPOSITIONS - Methods for analyzing, selecting, characterizing or classifying compositions of a co-polymer, e.g., glatiramer acetate are described. The methods entail analysis of pyro-glutamate in the composition, and, in some methods, comparing the amount of pyro-glutamate present in a composition to a reference standard. | 12-31-2015 |
20160002147 | METHOD OF SYNTHESISING AMINO ACID BY METATHESIS, HYDROLYSIS, THEN HYDROGENATION - A method of synthesising an amino acid from an unsaturated fatty compound I that includes at least the following steps: cross-metathesis with a short unsaturated compound II, one of compounds I or II comprising a nitrile function and the other of these compounds II or I an ester function, so as to obtain and recover at least one monounsaturated nitrile ester NEU; hydrolysis of the NEU in unsaturated acid nitrile NAU; hydrogenation of the NAU to saturated amino acid AA; and then purification of the AA, if applicable, in particular by crystallisation. Also, a polymer obtained by polymerisation using the amino acid synthesised according to the method. | 01-07-2016 |
20180023104 | MATERIALS AND METHODS FOR DIRECTING CARBON FLUX AND INCREASED PRODUCTION OF CARBON BASED CHEMICALS | 01-25-2018 |