In situ formed titanium chelate catalysts.

摘要

A process for producing a silicone sealant mixes a hydroxyl or alkoxy endblocked polydiorganosiloxane, an alkoxy functional crosslinker, tetraorganotitanate catalyst, optional filler and plasticizer and ethylacetoacetate, then devolatilizes and stores to give a silicone sealant containing an in situ formed titanium chelate catalyst which cures upon exposure to moisture and which has an improved cure time and reduced color.