Class 564/498 - Of an alkylene polyamine

Subclass of Class 564 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the compounds prepared are alkylene polyamines.
No. of applications: 4
Last issue date: 11/18/2010

Application No.	Application Title	Issue Date
20100292511	PURIFICATION OF IMPURE HEXAMETHYLENEDIAMINES Impure hexamethylenediamines and more particularly those hexamethylenediamines containing contaminating amounts of tetrahydroazepine (THA), or more generally contaminating amounts of imines, are purified by distillation carried out with a short retention time of the imp...	11/18/2010
20100069673	Neutralization of Ethylenediamine Hydrochloride and recovery of Ethylenediamine In a neutralization and recovery process ethylene diamine hydrochloride (EDA-HCL) is neutralized and ethylene diamine (EDA) is recovered using a mixture of solid caustic dissolved in a non-aqueous solvent, for example an alcohol....	03/18/2010
20090227758	POLYURETHANES HAVING LOW LEVELS OF ALDEHYDE EMISSIONS Polyols or polyisocyanates, or both, are treated to reduce aldehyde impurities before being reacted together to form a polyurethane. Polyols are treated by adding certain aminoalcohols to them, preferably in the presence of a tertiary amine catalyst. Polyisocyanates are...	09/10/2009
20090082599	ACCELERATED AMIDE AND ESTER REDUCTIONS WITH AMINE BORANES AND ADDITIVES In a process for the accelerated reduction of organic substrates, selected from the group consisting of esters, amides, nitriles, acids, ketones, imines or mixtures thereof, they are reacted with an amine borane, sulfide borane or ether borane complex as a borane source...	03/26/2009

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