Abstract:
HIGH MOLECULAR WEIGHT POLYQUINAZOLONES AND A PROCESS FOR THEIR PRODUCTION BY POLYCONDENSATION OF A MIXTURE OF POLYMERHOMOLOGOUS PRIMARY AROMATIC DIAMINES CONTAINING ETHER GROUPS WITH DIBENZOXAZINONES AT TEMPERATURES OF FROM 80 TO 250*C.
Abstract:
NITROARYL ETHER MONOCARBOXYLIC ACIDS AND THEIR ESTERS AND A PROCESS FOR PRODUCING THEM BY REACTING
(A)
(1) A DIALKALI METAL SALT OR A M- OR P-HYDROXY ARYL CARBOXYLIC ACID OR (2) MONOALKALI METAL SALT OF A M- OR P-HYDROXY ARYL CARBOXYLIC ACID ESTER WITH (B)
AN AROMATIC MONOITRO-HALO-SUBSTITUTED COMPOUND WHEREIN THE HALOGEN ATOM OR ATOMS AND NITRO SUBSTITUENT ARE RING ATTACHED: AND EFFECTING THE REACTION AT AN ELEVATED TEMPERATURE UTILIZING MOLAR AMOUNTS OF THE REACTANTS AT 50-160*C. IN THE PRESENCE OF A STRONGLY POLAR ORGANIC SOLVENT.
Abstract:
The invention provides a process for the production of ternary and quaternary copolymers containing N,N-disubstituted acrylic acid amides which comprises reacting polyacrylic acid-C1-C4-alkyl ester with secondary alkyl or cycloalkyl monoamines in aprotic solvents at temperatures of from 100* to 250*C and under pressure of from 0 to 100 atms. The reaction products according to the invention are particularly suitable for use as thickeners for printing pastes and as gloss stabilisers for modacrylic filaments and films.
Abstract:
Process for the production of methallyl sulfonic acid and salts thereof by reaction of isobutylene and a complex of sulfur trioxide and an N,N-dialkyl substituted amide of an aliphatic carboxylic acid or a N-alkyl substituted lactam wherein at least 1 mol of isobutylene is used for 1 mol of sulfur trioxide. The methallyl sulfonic acid and their salts are comonomers in the polymerization of olefinic compounds.
Abstract:
Improvement in the production of high molecular weight polybenzoxazinones from bis-anthranilic acid derivatives and dicarboxylic acid dihalides followed by ring closure of the polyamidocarboxylic acid obtained, wherein ring closure is effected by a liquid or dissolved dehydrating agent in an organic solvent.
Abstract:
HIGH MOLECULAR WEIGHT AROMATIC POLYBENZOXAZIONES AND A PROCESS FOR THEIR PRODUCTION BY POLYCONDENSATION OF AROMATIC DIAMINOCARBOXYLIC ACIDS CONTAINING ETHER OXYGEN WITH AROMATIC DICARBOXYLIC ACID DIHALIDES IN POLAR ORGANIC SOLVENTS, AND HEATING THE POLYAMIDE CARBOXYLIC ACIDS THUS OBTAINES AT TEMPERATURES ABOVE 150* C. SAID POLYMERS BEING USEFUL IN THE FORM OF FILMS AND FOILS.