PREPARATION OF SPRAYABLE ALIPHATIC POLYUREA ELASTOMERS HAVING IMPROVED PROPERTIES

摘要

This invention discloses an aliphatic spray polyurea elastomer comprising an(A)component that includes an aliphatic isocyanate and a (B) component thatincludes (1)an amine-terminated polyoxyalkylene polyol and (2) a cycloaliphatic diaminechainextender, wherein between about 20% to about 80% of the primary amines havebeenconverted into secondary amines.