Abstract:
THE INVENTION RELATES TO POLYMIDES WHICH ARE SOLUBLE IN ORGAINIC SOLVENTS AND TO A PROCESS FOR THEIR PRODUCTION BY CONDENSING AROMATIC TETRACARBOXYLIC ACIDS OR THEIR DERIVATIVES WITH HIGH MOLECULAR WEIGHT AROMATIC POLYETHER DIAMINES.
Abstract:
Alkyl pyridines are manufactured by reacting R-C(CH2OH)3 (a trimethylolalkane) with ammonia or an amine, preferably in the presence of a polar solvent (water) and an acid catalyst.
Abstract:
Alpha -Amino-2-hydroxyphenylacetic acids which are known intermediates for the preparation of various antibiotics are prepared from 2-hydroxyphenylacetic acid lactone through nitrosylation, catalytic hydrogenation in the presence of an alkanoic acid anhydride and hydrolysis with aqueous mineral acid.
Abstract:
DIALKYLPYRIDINES ARE PREPARED BY REACTING AN OXETAN AND FROM 0.5 TO 10 MOLS OF AMMONIA, METHYLAMINE, DIMETHYLAMINE AND MIXTURES OF THE FOREGOING AT A TEMPERATURE OF FROM ABOUT 600*C.
Abstract:
Unsaturated sulfonic acid betaines suitable for use as antistatic agents with high polymers are prepared by reacting an unsaturated N,N-disubstituted acid hydrazide with a sultone.
Abstract:
Process for producing halopyrimidines by reacting a nitrile or dinitrile and an isocyanide-dichloride in the presence or absence of an inert solvent or diluent and in the presence or absence of an acidic catalyst at a temperature of from 20* to 600* C.