Abstract
The development of the new RIM generation "Polyurea-RIM" is progressing world-wide. The reason for the superior thermal stability of the Polyurea- RIM-Elastomers is the polymerization without the use of a metallic catalyst. RIM without catalyst is only possible with the use of highly reactive species like primary and secondary amines. However, polyether with aliphatic amino end-groups are very fast and difficult to control for the RIM-process.
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