Process for the preparation of (thio)hydantoins substituted with amide groups

Claim 2

Processes for the preparation of amide-substituted (thio)hydantoins which comprises reacting a primary mono- or poly-amine with a maleic acid amide corresponding to the following general formula (I): wherein R 1 , r 2 and R 6 , which may be the same or different, each represents hydrogen or an optionally substituted aliphatic radical; R 5 represents hydrogen or an optionally substituted aliphatic, cycloaliphatic, aromatic, aliphatic-aromatic or heterocyclic radical; and k represents an integer of from 1 to 3; reacting the resulting product with an organic mono- or poly-iso(thio)cyanate and subsequently cyclising the

Claim 3

Processes as claimed in claim 1 in which, in general formula (I), R 1 , R 2 and R 6 represents hydrogen or a C 1 -C 18 alkyl radical optionally substituted by halogen, R 5 represents hydrogen, a C 1 -C 20 alkyl radical, a C 5 -C 12 cycloalkyl radical which both may optionally be substituted by halogen, by a hydroxy, by C 1 -C 18 alkoxy, by C 2 -C 18 alkoxy carbonyl group or by a hydroxy carbonyl group, a C 6 -C 16 aryl radical which may optionally be substituted by halogen, nitro group by C 1 -C 18 alkyl, by C 1 -C 18 haloalkyl, hydroxy, by C 1 -C 18 hydroxyalkoxy, by C 2 -C 18 alkoxy carbonyl or by hydroxy carbonyl groups, a C 7 -C 18 aralkyl radical or a C 5 -C 12 heterocyclic radical containing N, O and/or S-atoms in

Claim 4

Processes as claimed in claim 2, wherein R 5 represents hydrogen, a

Claim 5

Processes as claimed in claim 1, wherein the maleic acid amides are maleic acid mono amide, N-methyl, N-butyl, N-phenyl maleic acid mono amide, bis-amide acid mono amide based on hexamethylene diamine, diaminodiphenyl methane, phenylene diamine, tolylene diamine or

Claim 6

Processes as claimed in claim 1 wherein the cyclisation is carried out

Claim 7

Processes as claimed in claim 1 wherein the primary mono- or polyamine corresponds to the following general formula (III): r.sub.3 --nh.sub.2 ].sub.1 (ii) wherein R 3 represents an optionally substituted aliphatic, cycloaliphatic, aromatic, aliphatic-aromatic or heterocyclic radical; and

Claim 8

Processes as claimed in claim 6 in which, in general formula (II), l represents 1 or 2, R 3 has the meaning of R 5 , except for

Claim 9

Processes as claimed in claim 7, wherein R 3 represents a C 1 -C 18 alkyl radical, C 5 or C 6 cycloalkyl radical or a C 1 -C 16 aryl radical optionally substituted by halogen, by

Claim 10

Processes as claimed in claim 1 wherein the mono- or poly-iso(thio)cyanate corresponds to one of the following general formulae (III): r.sub.4 (--nco).sub.z and R.sub.4 (--NCS).sub.z (III) wherein R 4 represents an optionally substituted aliphatic, cycloaliphatic, aromatic, aliphatic-aromatic or heterocyclic radical, excluding the substituent hydroxy, hydroxyalkoxy and hydroxy carbonyl; and

Claim 11

Processes as claimed in claim 9 wherein in general formulae (III), z

Claim 12

Processes as claimed in claim 9, wherein R 4 represents an aliphatic C 1 -C 20 radical which may optionally be substituted by halogen, by C 1 -C 6 alkyl and/or by C 6 -C 16 aryl groups, a C 6 -C 16 aromatic radical, a C 5 -C 12 cycloaliphatic radical, a C 7 -C 20 aliphatic-aromatic radical or a C 5 -C 12 aromatic or cycloaliphatic radical containing a hetero

Claim 13

Processes as claimed in claim 1 wherein the reaction between the amine and the acid amide is carried out at a temperature of from -20° to

Claim 14

Processes as claimed in claim 1 wherein the reaction of the iso(thio)cyanate is carried out at a temperature of from -20° to

Claim 15

Processes as claimed in claim 13 wherein the said temperature is from

Claim 16

Processes as claimed in claim 1 wherein cyclisation is carried out at a

Claim 17

Processes as claimed in claim 15 wherein the said temperature is from

Claim 18

An amide-substituted (thio) hydantoin when prepared by a process as

Claim 19

An amide-substituted (thio) hydantoin when prepared by a process as

Claim 20

A lacquer composition comprising an amide-substituted (thio) hydantoin as claimed in claim 17.