Abstract:
The invention relates to a method for producing compounds of general formula (IIb), wherein R represents C6-C30 alkyl or C6-C30 alkenyl which can also support up to 5 hydroxyl groups, formyl groups, C1-C4 alkoxy groups, phenoxy groups or C1-C4 alkoxycarbonyl groups as substituents and which can be interrupted by up to 5 non-adjacent oxygen atoms, or alkoxylate groupings of formula -(CH2)k-O-(A O)m-(A O)n - Y, wherein A and A represent 1,2 alkylene groups with 2 to 4 C-atoms, Y represents hydrogen, C1-C12 alkyl, phenyl, or C1-C4 alkoxycarbonyl, k represents the number 1, 2 or 3 and m and n each represent numbers from 0 to 50, the sum of m and n being at least 4, independently of each other. According to the inventive method, iminodiacetonitrile is reacted with aldehydes of general formula R-CHO and HCN or alkali cyanides. The method is carried out a) without using an organic solvent and in the presence of a Lewis or Bronsted acid, or b) with or without an organic solvent and in the presence of an emulsifier, or c) with or without an organic solvent and at a pressure of 1 to 40 bar.
Abstract:
Disclosed is an active substance composition, specially a cosmetic agent, a light-screening agent or a vitamin composition, containing one or several compounds of formula (I), specially an active substance composition, containing as a compound of formula (I) ethylene diaminosuccinate (EDDS), ethylene diaminoglutamate (EDDG) or (2-hydroxy propylene)-1,3-diaminosuccinate (HPDDS). The invention also relates to the use of bis(dicarboxylic acid) diaminoalkylene derivatives of the above formula (I) as complexing agents for earth alkaline metal ions and heavy metal ions in active substance compositions, specially cosmetic agents, screening agents, vitamin compositions and for stabilizing oxidation-sensitive active substances.
Abstract:
Compounds of the general formula Iwheren is 0 or 1,Z is a straight-chain or branched polyalkyl radical having a number average molecular weight of from about 150 to 40,000, andY is a radical of the formula IIa or IIb wherethe radicals R, R1 and R2 independently of one another, are each hydrogen, an unsubstituted or substituted alkyl, alkenyl or alkynyl radical or an unsubstituted or substituted cycloalkyl, aryl or arylalkyl radical, which may carry one or more heteroatoms, andA is an alkyleneimine radical; or, ifn is 0, one of the radicals Y may be a polyoxyalkylene radical,and processes for their preparation and fuel and lubricant compositions, and mixtures of additives, which contain the novel compounds.
Abstract:
Cyanoalkylation of ammonia or organic compounds containing one or more NH functions, by reaction with a carbonyl compound and hydrocyanic acid in a solvent, is carried out in two stages comprising a first stage (i) at a temperature (T1) below the boiling point of the reaction mixture, and a second stage (i) at a temperature (T2) below 150 degrees C. Cyanoalkylation of ammonia or organic compounds containing one or more NH functions, by reaction with a carbonyl compound and hydrocyanic acid (each at 1 mol per NH function to be converted) in a solvent, is carried out in two stages comprising a first stage (i) at a temperature (T1) below the boiling point of the reaction mixture, carried out until the degree of HCN conversion is at least 60% and a second stage (i) at a temperature (T2) below 150degreesC, carried out until the degree of HCN conversion is at least 90%. An Independent claim is included for alpha -cyanoalkylamines (I) obtained by the process.
Abstract:
PCT No. PCT/EP96/00169 Sec. 371 Date Jul. 28, 1997 Sec. 102(e) Date Jul. 28, 1997 PCT Filed Jan. 17, 1996 PCT Pub. No. WO96/22964 PCT Pub. Date Aug. 1, 1996The use of triacids of the formula I where X1 to X3 are, independently of one another, carboxylic acid groups of the formula COOM, sulfonic acid groups of the formula SO3M or phosphonic acid groups of the formula PO3M2, where M is hydrogen, alkali metal, ammonium or substituted ammonium, A1 to A3 are, independently of one another, 1,2-alkylene with 2 to 18 carbon atoms, R1 to R3 are, independently of one another, C1-C8-alkylene, and x, y and z are, independently of one another, a number from 0 to 10, where the total of x+y+z must be greater than or equal to 1, as complexing agents for complexing heavy metals or for preparing heavy metal complexes for changing the redox potential, and as builders in detergents and cleaners.
Abstract:
PCT No. PCT/EP96/00169 Sec. 371 Date Jul. 28, 1997 Sec. 102(e) Date Jul. 28, 1997 PCT Filed Jan. 17, 1996 PCT Pub. No. WO96/22964 PCT Pub. Date Aug. 1, 1996The use of triacids of the formula I where X1 to X3 are, independently of one another, carboxylic acid groups of the formula COOM, sulfonic acid groups of the formula SO3M or phosphonic acid groups of the formula PO3M2, where M is hydrogen, alkali metal, ammonium or substituted ammonium, A1 to A3 are, independently of one another, 1,2-alkylene with 2 to 18 carbon atoms, R1 to R3 are, independently of one another, C1-C8-alkylene, and x, y and z are, independently of one another, a number from 0 to 10, where the total of x+y+z must be greater than or equal to 1, as complexing agents for complexing heavy metals or for preparing heavy metal complexes for changing the redox potential, and as builders in detergents and cleaners.
Abstract:
Use of glycine-N,N-diacetic acid derivs. of formula (I) is claimed as complex formers for alkaline earth or heavy metals. R = 1-20C alkyl, 2-20C alkenyl or -A.CH(COOM).N(CH2COOM)2; A = 1-12C alkylene or a chemical bond; M = H, alkali metal or opt. substd. ammonium. The use of ~a-alanine-N,N-diacetic acids as builders in textile-washing powders or as Ca sequestrants in oral hygiene compsns. is specifically excluded. Also claimed are 2-alkylglycine-N,N-diacetonitriles or 2-alkylglycinenitrile -N,N-diacetonitriles (where alkyl = 1-20C alkyl or 2-20 C alkenyl); and cpds. of formula (II). X = carboxylic acid or nitrile function. Cpds. of formula (I) are new except when R = 1-3C alkyl and A = chemical bond.
Abstract:
PCT No. PCT/EP97/02062 Sec. 371 Date Oct. 22, 1998 Sec. 102(e) Date Oct. 22, 1998 PCT Filed Apr. 23, 1997 PCT Pub. No. WO97/40088 PCT Pub. Date Oct. 30, 1997Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water-insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.