Abstract: A novel catalyst system is described that is useful in the trimerization of organic isocyanates. The system comprises (1) N,N',N"-trisdialkylaminoalkyl-s-hexahydrotriazine and (2) a compound selected from the group consisting of 3,5-bis(N,N-dialkylaminoalkyl)-1,3,5-tetrahydrooxadiazine, 5-(N,N-dialkylaminoalkyl)-1,3,5-dihydrodioxazine and the mixtures thereof.

Abstract: Disubstituted s-triazines are prepared by the reaction of allophanoyl chlorides with a metal cyanate in the presence of a dipolar aprotic solvent. The products may be used as intermediates in the production of pharmaceuticals, insecticides, disinfectants and in the preparation of polymers.

Abstract: This invention relates to fire-retardant polyisocyanurate and polyurethane foams having reduced smoke levels when burned and to methods for producing such foams. The foams are produced by incorporating into the polyisocyanurate or polyurethaneA. polycarboxylic cycloaliphatic acids having 3 non-adjacent carboxylic acid groups or any configuration with more than 3 carboxylic acid groups up to and including acids containing one carboxylic acid group per carbon atom,B. polycarboxylic heterocycloaliphatic acids having 3 non-adjacent carboxylic acid groups or any configuration with more than 3 carboxylic acid groups up to and including acids containing one carboxylic acid group per carbon atom,C. polycarboxylic aromatic acids having 3 non-adjacent carboxylic acid groups or any configuration with more than 3 carboxylic acid groups up to and including acids containing one carboxylic acid group per carbon atom,D.

Abstract: A novel catalyst system is described that is useful in the trimerization of organic isocyanates. The system comprises (1) N,N',N"-trisdialkylaminoalkyl-s-hexahydrotriazine and (2) a compound selected from the group consisting of 3,5-bis(N,N-dialkylaminoalkyl)-1,3,5-tetrahydrooxadiazine, 5-(N,N-dialkylaminoalkyl)-1,3,5-dihydrodioxazine and the mixtures thereof.

Abstract: Phenylisocyanurate is reacted with ethyl-4-chlorobutyrate in an inert solvent to 25.degree.C. to 150.degree.C. to produce 1,3-bis(3-carbethoxypropyl)-5-phenylisocyanurate. The 1,3-bis(3-carbethoxypropyl)-5-phenylisocyanurate is then heated with a mineral acid to produce 1,3-bis(3-carboxypropyl)-5-phenylisocyanurate.

Abstract: Phenylisocyanurate is reacted with ethyl-chloroacetate in an inert solvent at 25.degree.C. to 150.degree.C. to produce crystalline 1,3-bis(carbethoxymethylene)-5-phenylisocyanurate. The 1,3-bis(carbethoxymethylene)-5-phenylisocyanurate is then heated with a mineral acid to produce crystalline 1,3-bis(carboxymethylene)-5-phenylisocyanurate. A novel polyester of the formula ##SPC1##Is made wherein N=1, M is a diol having at least two carbon atoms, and X is a whole number greater than 1 by condensing 1,3-bis(carboxymethylene)-5-phenylisocyanurate with a polyol such as 1,4-butanediol.

Abstract: Phenylisocyanuric acid is reacted with acrylonitrile in the presence of N-benzyltrimethyl ammonium hydroxide; 40% in methanol, in an inert solvent at 75.degree.C. to 150.degree.C. to produce 1,3-bis(2-cyanoethyl)-5-phenylisocyanurate. The 1,3-bis(2-cyanoethyl)-5-phenylisocyanurate is then heated with a mineral acid to produce 1,3-bis(2-carboxyethyl-5-phenylisocyanurate. A novel polyester of the formula ##SPC1##Is made wherein N=2, M is a diol having at least two carbon atoms, and X is a whole number greater than 1 by condensing 1,3-bis(2-carboxyethyl)-5-phenylisocyanurate with a polyol such as 1,6-hexanediol.

Abstract: Phenylisocyanurate is reacted with ethyl-4-chlorobutyrate in an inert solvent to 25.degree.C. to 150.degree.C. to produce 1,3-bis(3-carbethoxypropyl)-5-phenylisocyanurate. The 1,3-bis(3-carbethoxypropyl)-5-phenylisocyanurate is then heated with a mineral acid to produce 1,3-bis(3-carboxypropyl)-5-phenylisocyanurate. A novel polyester of the formula ##SPC1##Is made wherein N=3, M is a diol having at least two carbon atoms, and X is a whole number greater than 1 by condensing 1,3-bis(3-carboxypropyl)-5-phenylisocyanurate with a polyol such as 1,6-hexanediol.

Abstract: Phenylisocyanurate is reacted with ethyl-chloroacetate in an inert solvent at 25.degree.C. to 150.degree.C. to produce crystalline 1,3-bis(carbethoxymethylene)-5-phenylisocyanurate. The 1,3-bis(carbethoxymethylene)-5-phenylisocyanurate is then heated with a mineral acid to produce crystalline 1,3-bis(carboxymethylene)-5-phenylisocyanurate.