04038114 is referenced by 5 patents and cites 4 patents.

A catalyst system for promoting the room temperature of isocyatic cured polyurethane based propellants. The system is composed of a metal catalyst; a chelating agent or an acid as a suppressor component; and zinc oxide as a scavenger component. The suppressor inactivates the catalyst, thus providing the necessary potlife, while the scavenger slowly consumes the suppressor, thus restoring the activity of the catalyst, which then promotes an effective cure.

Title
Catalyst system for polyurethane propellant compositions
Application Number
5/716305
Publication Number
4038114
Application Date
August 20, 1976
Publication Date
July 26, 1977
Inventor
Adolf E Oberth
Fair Oaks
CA, US
Agent
William J O Brien
Joseph E Rusz
Assignee
The United States of America represented by the Secretary of the Air Force
DC, US
IPC
C06B 45/10
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