Schill+Seilacher was founded in 1877, originally producing chemicals for leather processing. Since then the company has grown to a group of four independently-run companies with different product ranges. Alfa Chemicals represent the silicone additives and catalysts division who produce special chemicals for the polyurethane industry along with rubber processing, foam inhibitors, latex, mineral oils and silicones.

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Especially recommended for pentane blown systems, but also for partly water blown systems. Traditionally 141 b blown formulation can be also provided.