Abstract: New N-heterocyclic diols are obtained by an addition reaction of alkylene oxide with certain oligomeric compounds containing more than two hydantoin and/or benzimidazolone rings. The new diols are suitable for the manufacture of polyesters, polyurethanes, diacrylates and diglycidyl ethers, from which moulding materials having valuable thermomechanical properties can be manufactured.

Abstract: Adducts of polyglycidyl compounds and cyclic ureides containing dialkoxyphosphonomethyl groups, such as 3-dialkoxyphosphonomethylhydantoins or 3-dialkoxyphosphonomethyldihydrouracils, and the use of the adducts for the manufacture of flameproof epoxide resins.

Abstract: The invention relates to 3-dialkoxyphosphonoalkyl-hydantoins and 3-dialkoxyphosphonoalkyl-dihydrouracils. These compounds are manufactured by reacting the hydantoins or dihydroaracils substituted in 3-position by a halogenalkyl group with a trialkyl phosphite. They can be incorporated into polymeric materials or their starting substances and impart to them non-inflammability.

Abstract: Adducts of cyclic urea derivatives and dialkyl phosphites, containing glycidyl groups, for example adducts of a diglycidyl compound of hydantoins, substituted in the 5-position by alkyl groups or an alkylene group, and of diethyl phosphite or dimethyl phosphite. These adducts are used for the manufacture of flame-retarding plastics.

Abstract: Storage-Stable moulding compositions which contain solid adducts, containing epoxide groups, of triglycidyl-bis-hydantoins or triglycidyl-bis-dihydrouracils and organic compounds possessing several active hydrogen atoms, solid adducts, containing amino groups, of cycloaliphatic, heterocyclic or aromatic polyamines as curing agents, and fillers. The moulding compositions are used for the manufacture of light-stable and tracking-resistant plastics.

Abstract: The polyglycidyl compounds according to the invention can be manufactured by reacting epihalogenohydrin with compounds of the formula IV ##EQU1## OR THE FORMULA V ##EQU2## in which (1.) n denotes 2, 3 or 4, (2.) A represents a 2-valent, 3-valent or 4-valent organic radical which either contains a N-heterocyclic or cycloaliphatic ring or 2 N-heterocyclic rings or 2 phenylene rings, (3.) either B deontes the --CH.sub.2.O.CO--radical and m denotes the number 1, or B denotes the radical ##EQU3## and m denotes 0, and 4.) R.sup.1 represents a divalent radical, which contains at least one hydrantoin ring or uracil ring. During the reaction hydrogen halide splits off. From curable mixtures containing polyglycidyl compounds according to the invention and a curing agent such as hexahydrophthalic anhydride or phthalic anhydride are obtained products with good mechanical and electrical properties.

Abstract: New chlorinated and/or brominated N,N'-substituted benzimidazolones are obtained by reacting N,N'-substituted benzimidazolones with chlorine or bromine. The new chlorine-containing and/or bromine-containing benzimidazolone compounds are suitable for the production of heat-stable, flame-resistant polymers.

Abstract: New diglycidyl compounds of mononuclear, five-membered or six-membered, unsubstituted or substituted, hydroxyalkylated N-heterocyclic compounds, produced by addition of formaldehyde or acetaldehyde to mononuclear, five-membered or six-membered, unsubstituted or substituted, N-heterocyclic compounds, for example hydantoin or dihydrouracil, to monohydroxyalkyl compounds, and subsequent glycidylation of the OH group and NH group to give the corresponding glycidyl compounds.

Abstract: Adducts of polyglycidyl compounds and cyclic ureides containing dialkoxyphosphonoalkyl groups, such as 3-dialkoxyphosphonoalkyl-hydantoins. These adducts are used for the manufacture of flame-retardant epoxide resins.