Method for the preparation of a polyurea resin

Details Method for the preparation of a polyurea resin Method for the preparation of a polyurea resin

1992-10-20

1994-06-07

Kigth, III, John

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 68, 528 73, 528 75, 528 76, 528 79, C08G 1832, C08G 1866, C08G 1850, C08G 1879

Patent

active

053190580

ABSTRACT:
A polyurea resin having excellent mechanical properties along with high heat resistance can be prepared by the reaction of an aromatic polyamine component and an aliphatic polyisocyanate component, in which the aromatic polyamine component is a combination of a first aromatic polyamine compound which is typically a polyoxyalkylene bis(aminobenzoate) compound and a second aromatic polyamine compound selected from various classes of aromatic polyamine compounds different from the first aromatic polyamine compound in a specified weight proportion. The polyurea resin can be imparted with further improved heat resistance when the aliphatic polyisocyanate component is a combination of an aliphatic diisocyanate compound and a cyclic trimer of an aliphatic polyisocyanate compound in a specified weight proportion.

REFERENCES:
patent: 3929863 (1975-12-01), Blahak et al.
patent: 4288586 (1981-09-01), Bock et al.
patent: 4616043 (1986-10-01), Smith
patent: 4788262 (1988-11-01), Markusch et al.
patent: 5039775 (1991-08-01), Oyaizu
patent: 5086153 (1992-02-01), Oyaizu
Week 1192, Derwent Publication Ltd., London GB; AN 92-086147 & JP-A-04 031 417 (IHARA) 3 Feb. 1992 *abstract*.
Week 0789, Derwent Publications Ltd., London, GB; AN 89-051311 & JP-A-64 001 715 (Kinyosha) 6 Jan. 1989 *abstract*.

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