Production of polytriazines from aromatic polycyanates with cobalt salt of a carboxylic acid as catalyst

Claim 2

A process for the preparation of a polytriazine consisting essentially of contacting an aromatic polycyanate with a catalytic amount of a cobalt salt of a C 6-20 carboxylic acid at a temperature between about 20° C. and about 200° C. wherein the aromatic polycyanate corresponds to the formula Ar--OCN) n wherein Ar represents an aromatic radical or an aromatic radical interrupted by one or more bridge members and n is a number of from 1 to 7.

Claim 3

The process of claim 1 wherein the amount of catalyst is between about 0.001 and 5 percent by weight of the aromatic polycyanate.

Claim 4

The process of claim 2 wherein the amount of catalyst is between about 0.01 and 0.1 percent by weight of the aromatic polycyanate.

Claim 5

The process of claim 1 wherein the temperature is between about 80° C. and 180° C.

Claim 6

The process of claim 1 wherein the catalyst is cobalt octoate.

Claim 7

The process of claim 5 wherein the catalyst is cobalt naphthenate.

Claim 8

The process of claim 1 wherein the polycyanate corresponds to the formula ##STR15## wherein each R is the same or different and represents hydrogen, halogen, straight or branched C 1 -C 20 alkyl, phenyl, alkoxy radicals having from 1 to 4 carbon atoms, alkoxy carbonyl radicals having from 1 to 4 carbon atoms in the alkyl group; or two adjacent radicals R on the same nucleus together form a carbocyclic 5- or 6-membered ring, two adjacent radicals R together with a hetero atom (O, S, N), form a 5- or 6-membered heterocyclic ring; R' has the same meaning as R or represents the group ##STR16## A represents a direct bond, or A represents a C 1 -C 20 alkylene group or said group substituted by C 1 -C 4 alkyl or phenyl, a cycloaliphatic or aromatic 5- or 6-membered ring or said group interrupted by oxygen, a sulfonyl group (--SO 2 --), a carbonyl dioxide group, ##STR17## or a carbonyl group; a represents a number of from 1 to 5 when e≧1, and a number of from 2 to 5 when e=0; b represents 5-a when e≧1 and 6-(a+d) when e=0; c represents 5-d; d represents a number of from 0 to 5; and e represents 0, 1, 2 or 3, with the proviso that the sum of a and d is always a number from 2 to 5.

Claim 9

The process of claim 1 wherein the aromatic cyanate is a polyaromatic cyanate which corresponds to the formula ##STR18## wherein: E is an aromatic radical; B is a C 7-20 polycyclic aliphatic radical; D is independently in each occurrence any nonactive hydrogen-containing substituent; q, r and s are independently in each occurrence the integers 0, 1, 2, or 3; with the proviso that the sum of q, r and s is greater than or equal to 2; t is independently in each occurrence an integer of between about 0 and 4 inclusive; and x is a number between about 0 and 5 inclusive.

Claim 10

The process of claim 8 wherein: E is a benzene, naphthalene, phenanthracene, anthracene, or biaromatic radicals, or two or more aromatic radicals bridged by alkylene moieties; B is ##STR19## D is an alkyl, alkenyl, alkynyl, aryl, alkaryl, aralkyl, halo, alkoxy, nitro, carboxylate, sulfone, sulfide, or carbonate moiety; D 1 is C 1-5 alkyl; Y is ##STR20## q, r and s are independently 1 or 2; t is independently 0, 1 or 2; and x is a number between about 0 and 2 inclusive.

Claim 11

The process of claim 9 wherein: E is a benzene, biphenyl, binaphthyl or diphenylalkylene radical; B is ##STR21## D is a C 1-10 alkyl, C 1-10 alkenyl, nitro or halo moiety; q, r and s are 1; t is 0 or 1; and x is a number between 0 and 1 inclusive.

Claim 12

The process of claim 10 wherein: E is benzene; B is ##STR22## D is a C 1-3 alkyl, C 1-3 alkenyl, bromo or chloro moiety; and t is 0.

Claim 13

The process of claim 11 wherein: B is ##STR23##

Claim 14

The process of claim 8 wherein the polyaromatic cyanate corresponds to the formula ##STR24## wherein x is a real number of between about 0 and 5, inclusive.

Claim 15

The process of claim 13 wherein x is a real number of between about 0 and 2, inclusive.

Claim 16

The process of claim 13 wherein x is a real number of between about 0 and 1, inclusive.