Hoechst Aktiengesellschaft

Johannes Reese

Kurt Kraft

Kurt Hultzsch

Albert Jung

Wolfgang Hesse

Jurgen Ritz

Gerd Walz

Rolf Zimmermann

A reaction product of a diolefine polymer with a phenol and an olefinically unsaturated carboxylic acid or its anhydride wherein the diolefine polymer is

Reaction products of polydiolefins, phenols and unsaturated carboxylic

A process for the preparation of a monomer compound containing a structural unit of the formula ##STR1## wherein one of Q and Q' are independently the group --NH--CO--OR.sup.IV or hydrogen and the other --NH--CO--COOR.sup.V or hydrogen, a urethane or an isocyanate, wherein R.sup.IV and R.sup.V aliphatic or carbocyclic hydrocarbon groups being substituted or unsubstituted group; R and R'' are unsubstituted or monosubstituted aromatic radicals (wherein at least one oxamidic ester and) wherein at least one oxamidic acid ester with the grouping --NH--CO--CO--OR.sup.V, wherein R.sup.V is as defined, is reacted with an isocyanate or an isocyanate forming compound at temperatures of -20.degree. to +280.degree. C in the presence or absence of a catalyst,

N,N-Substituted 2,4,5-triketoimidazolidines and a process for their

A process for the preparation of a polymer compound containing a plurality of structural units of the formula ##STR1## and having the formula ##STR2## WHEREIN ONE OF Q and Q' are independently the group --NH--CO--OR.sup.IV or hydrogen and the other --NH--CO--COOR.sup.V or hydrogen, wherein

N,N'substituted 2,4,5-triketoimidazolidines, corresponding resinous

Sulfuric acid compounds are removed from reaction mixtures by a reaction with polybutadiene alone or combined with unsaturated terpene compounds at elevated temperatures whereby products of reduction are formed which are volatilizable at the temperature of reaction and by expelling said products of reduction from the reaction mixture. Thus a product being substantially free from a sulfur content is obtained.

Removal of sulfuric acid compounds

A modified N,N'-substituted 2,4,5-triketoimidazolidine containing polycarboxylic acid amide or imide groups at least in the main chain, a process for its manufacture which comprises reacting at a temperature of from minus 20 to plus 280.degree. C (a) at least one oxamidic ester having the group --NH--CO--CO--OR.sup.v, wherein R.sup.v is an aliphatic hydrocarbon group having up to 18 carbon atoms, a cycloaliphatic hydrocarbon group with up to 8 carbon atoms, a mononuclear aromatic hydrocarbon group which may contain at least one hydrocarbon group which constitutes a total of up to 14 carbon atoms (b) at least one isocyanate having or yielding 1 to 4 isocyanate groups or isocyanates forming compound and (c) a polybasic carboxylic acid component having 4 to 71 carbon atoms and 2 to 6 carboxylic groups so as to obtain a condensation product possessing amide or imide groups.

Process for preparing triketoimidazolidines

An epoxy resin containing acetoacetic ester groups in which at least a part of the acetoacetic ester groups is enolized by atoms of at least one metal from groups I to VI or Ia to Viiia of the Periodic Table according to Meyer and Mendelejeff which metal atoms are partially bound to the enolic oxygen of the acetoacetic ester group in the form of a chelate. A process for preparing said resins wherein an epoxy resin product containing acetoacetic ester groups is further reacted in the presence of a solvent (a) first with an alkali metal alcoholate and subsequently with at least one salt of at least one chelate-forming metal; or (b) with at least one chelate-forming metal in the presence of a tertiary amine or (c) for the preparation of an epoxy resin containing chemically bound atoms of at least one metal partially bound as a chelate an epoxy resin containing acetoacetic ester groups is further reacted in the presence of a solvent with an alcoholate of at least one chelate-forming metal.

Epoxy resin containing acetoacetic groups

A process for the isomerization of an ester of an alcohol having 1 to 12 carbon atoms and an fatty acid having 10 to 24 carbon atoms and isolated double bonds to the corresponding compound having conjugated double bonds which comprises isomerizing said ester at a temperature of 0.degree. to 160.degree.C in the presence of at least 0.8% by weight of an alkaline reacting metal alcoholate of a monohydric alcohol having 1 to 12 carbon atoms and a strongly polar aprotic solvent, the weight ratio of the solvent to said ester being at least 0.5:1 and the weight ratio of the alcoholate being calculated as potassium methylate and based on said ester and a coating composition containing as an essential ingredient a binder obtained according to said process.

Isomerization process of a higher fatty acid ester having isolated

A process for the preparation of modified N,N'-substituted-2,4,5-triketoimidazolidines which comprises reacting a precondensate having terminal isocyanate groups, prepared by reacting (a) a polybasic carboxylic acid, containing from 4 to 70 carbon atoms and from 2 to 6 carboxyl groups, with an excess of (b) one or more isocyanates or isocyanate forming compounds in the presence of a solvent, with (c) at least one oxamidic ester containing the group NH--CO--CO--OR.sup.v wherein R.sup.v represents an aliphatic hydrocarbon group containing up to 18 carbon atoms, a cycloaliphatic hydrocarbon group containing up to 8 carbon atoms or a mononuclear aromatic hydrocarbon group being unsubstituted or substituted by at least one hydrocarbon group and having a total of up to 14 carbon atoms in the presence of a solvent, a product prepared by said process and a shaped article comprising such a product.

N,N'-substituted 2,4,5-triketoimidazolidines

Sulfuric acid compounds are removed from reaction mixtures by a reaction with unsaturated terpene compounds or with polybutadiene at elevated temperatures whereby products of reduction are formed which are volatilizable at the temperature of reaction and by expelling said products of reduction from the reaction mixture. Thus a product being substantially free from a sulfur content is obtained.

Growing community of inventors

Wiesbaden-Biebrich, Germany

Johannes Reese