Claims
- 1. In a process for the preparation of a polyurethane composition by reacting a polyisocyanate, a polyol, a chain extender and a catalyst, the improvement which comprises reacting a catalytic chain extender comprising an aromatic diamine having tertiary amine functionality incorporated into a side chain of the aromatic diamine.
- 2. A polyurethane composition obtained by reacting a polyisocyanate, a polyol and a catalytic chain extender wherein the catalytic chain extender comprises an aromatic diamine having a tertiary amine functionality incorporated into a side chain of said aromatic diamine.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 266,463, filed on Nov. 2, 1988, now U.S. Pat. No. 4,937,306, which is a continuation-in-part of application Ser. No.075,363, filed on July 20, 1987, now abandoned, the subject matter of the above-mentioned applications which is specifically incorporated by reference herein.
US Referenced Citations (18)
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
266463 |
Nov 1988 |
|
Parent |
75363 |
Jul 1987 |
|