| abstract |
(57) [Summary] Formula: R 1 (NHCOOR 2 ) x (where x is at least 1, R 1 is an aromatic group having a valence of x, and R 2 is a monovalent organic group. )) Is obtained by thermally decomposing an aromatic monomeric or polymeric carbamate of the formula: R 1 (NCO) x into a monomeric or polymeric isocyanate and an alcohol of the formula: R 2 OH of a manufacturing method, the group R 2 is characterized in that it is substituted by a group containing at least one halogen atom, said method. |