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
1991-06-10
1992-08-18
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...
528 61, 528 68, 521163, C08G 1848, C08G 1830
Patent
active
051400901
ABSTRACT:
Disclosed is a method for preparing aliphatic polyureas in varying reaction times which comprises reacting polyoxyalkylene polyamines, an aliphatic diisocyanate and a sym-dialkylethylenediamine.
REFERENCES:
patent: 4705814 (1987-11-01), Grigsby et al.
patent: 4761465 (1988-08-01), Speranza et al.
Champion Donald H.
Speranza George P.
Johnson Rachel
Kendrick Cynthia L.
Park Jack H.
Priem Kenneth R.
Texaco Chemical Company
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