Process for the production of polyisocyanates of isocyanurate st

Details Process for the production of polyisocyanates of isocyanurate st Process for the production of polyisocyanates of isocyanurate st

1975-10-28

1976-12-07

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 25AT, 260 25AW, 260 775AT, 260 775NC, C07D25104

Patent

active

039962237

ABSTRACT:
Soluble polyisocyanates of isocyanurate structure are produced by heating polyisocyanates in the presence of Mannich bases and carbamic acid esters of isocyanates and secondary alcohols. When such a process is used, the polymerization reactions begin without incubation times and the catalysts need not be inactivated by introducing additives because they deactivate themselves at high temperatures.

REFERENCES:
patent: 2954365 (1960-09-01), Windemuth et al.
patent: 3259625 (1966-07-01), Ugi et al.

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