High molecular weight polytriazines of soluble polymeric N-cyano-isourea ethers
AssigneeBayer Aktiengesellschaft
InventorsRudolf Sundermann, Gunther Rottloff, Ernst Grigat
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Abstract
High molecular weight temperature-resistant polymers of polytriazine structure obtained by heating cyanamides of the formula I r -- (nh-cn).sub.n in which R represents an aliphatic, cycloaliphatic, heterocyclic or aromatic radical, optionally interrupted by oxygen and n is a number from 2 to 5, with polyfunctional, aromatic cyanic acid esters into a fusible or in organic solvents soluble polymeric N-cyano-isourea ether and completing the reaction at elevated temperatures and optionally in the presence of a catalyst to form said polymer of polytriazine structure.
Claims5
A mixture which can be converted into a high molecular weight polymer of polytriazine structure which is substantially insoluble in solvents, the mixture comprising:
- A. a cyanamide corresponding to the general formula (I):
- r (nh-cn).sub.n (I)
- in which R represents an aliphatic, cycloaliphatic, heterocyclic or aromatic radical optionally interrupted by at least one oxygen atom, and n is a number from 2 to 5, and
- B. an aromatic cyanic acid ester corresponding to the general formula (II):
- ar (OCN).sub.p (II)
- in which Ar represents an aromatic radical or an aromatic radical interrupted by a bridge member and p is a number from 2 to 5.
Dependencies are inferred from the claim text.