Abstract:
2-Formyloximido-3-aminocarbonylquinoxaline-1,4-di-N-oxides are antimicrobial agents. The compounds, of which 2formylcarbomethoxyhydrazine-3-dimethylaminocarbonylquinoxaline1,4-di-N -oxide is a typical embodiment, are prepared from the reaction of the corresponding 2-bis(halogeno) methyl-quinoxaline derivative and hydroxylamine or an appropriate hydrazinocarbonic acid ester in the presence of a primary or secondary amine and water.
Abstract:
IMINES OF 2-FORMYLQUINOXALINE-3-CARBOXYLIC ACID-1,4-DIOXIDES AND THEIR SALTS ARE OBTAINED THROUGH TREATMENT OF THE LACTONE OR A SALT OF 2-DIHYDROXYMETHYLQUINOXALINEN,N-DIOXIDE-3-CARBOXYLIC ACID WITH A REACTANT BEARING A FREE PRIMARY AMINO GROUP. THE RESULTANT COMPOUNDS AND THEIR NON-TOXIC SALTS ARE ANTIBACTERIAL AGENTS AND CAN BE INCORPORATED IN PHARMACEUTICAL COMPOSITIONS AND FEEDSTUFFS FOR THIS USE. A TYPICAL EMBODIMENT IS 2-(CARBOMETHOXYHYDRAZONOMETHYL)-QUINOXALINE-3-CARBOXYLIC ACID1,4-DIOXIDE.
Abstract:
Polyurethans stabilized against degradation and discoloration caused by the action of light or UV radiation, oxygen, substances present in the atmosphere, such as nitrogen oxides, and heat by the addition of alkoxy substituted sterically hindered phenols which has a 2-(2''-hydroxy-3-''-tertiary alkylbenzyl) anisole unit:
Abstract:
THE INVENTION RELATES TO A PROCESS FOR STABILISHING POLYURETHANES, PARTICULARLY POLYURETHANE ELASTOMER THREADS AND FILMS, AGAINST DEGRADATION AND DISCOLORATION UNDER THE ACTION OF LIGHT OR UV RADIATION, OXYGEN, ATMOSPHERIC CONSTITUENTS (E.G. NITROGEN OXIDES) AND HEAT BY THE ADDITION OF BISPHENOLS.
Abstract:
1312869 Bis-phenols BAYER AG 19 April 1971 [14 March 1970] 22335/71 Heading C2C [Also in Division C3] Novel compounds of the formula (wherein R is C 1-18 alkyl, C 5-6 cycloalkyl which may be C 1-6 alkyl-substituted, or C 7-9 aralkyl) are prepared by reacting α,α 1 -dihydroxy-1,4- diisopropylbenzene with appropriate 2 - R- 4-methyphenols in the presence of acid dehydration catalysts. The preparation of the compounds of the formulµ is also described. The first of these may subsequently be converted to the novel compounds by insertion of the group R using suitable olefines or carbinols. All the above compounds have use as stabilizers for polyurethanes (see Division C3).
Abstract:
Water-soluble polyamines which (a) have an average molecular weight of above 1,000 (b) contain at least one grouping of the formula -R-Z in which Z denotes a -COOH or -SO3H group and R represents an alkylene radical, possessing 1 to 7 C atoms, which is optionally substituted and/or interrupted by a carbonamido group, BONDED TO A BASIC NITROGEN ATOM, AND WHICH (C) ARE OBTAINABLE EITHER BY REACTION OF WATER-SOLUBLE LOW MOLECULAR POLYAMINES WITH COMPOUNDS WHICH INTRODUCE ACID GROUPS AND WITH COMPOUNDS WHICH ARE POLYFUNCTIONAL TOWARDS AMINO GROUPS, OR BY REACTION OF WATER-SOLUBLE HIGHER-MOLECULAR POLYAMINES, HAVING AN AMINE EQUIVALENT OF 43 TO 700, IN WHICH A HYDROGEN ATOM IS BONDED TO AT LEAST EVERY TWENTIETH BASIC NITROGEN ATOM, WITH COMPOUNDS WHICH INTRODUCE ACID GROUPS AND OPTIONALLY WITH COMPOUNDS WHICH ARE POLYFUNCTIONAL TOWARDS AMINO GROUPS; A PROCESS FOR THEIR MANUFACTURE AND THEIR USE AS AGENTS FOR INCREASING THE RETENTION OF FIBRES, FILLERS AND PIGMENTS IN THE MANUFACTURE OF PAPER AND FOR WORKING-UP PAPERMAKING MACHINE EFFLUENTS BY FILTRATION, SEDIMENTATION AND FLOTATION.