Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1993-10-18
1995-02-21
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
560338, 560347, C08G 1870
Patent
active
053916832
ABSTRACT:
Aromatic polyisocyanates, e.g., toluene diisocyanate, are prepared by reacting/contacting at least one aromatic compound (A) bearing at least two primary amine substituents, e.g., toluenediamine, xylylenediamine and/or phenylenediamine,, with phosgene, in gaseous phase and in a reactor/reaction zone devoid of active mechanical stirring.
REFERENCES:
patent: 2480089 (1949-08-01), Slocombe et al.
Joulak Faouzi
Revelant Denis
Vacus Pascal
Rhone-Poulenc Chimie
Welsh Maurice J.
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