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DABCO® LK 221 Evonik Operations GmbH, BL Comfort & Insulation DABCO® LK 221 is an organic surfactant that serves as a good emulsifier, epsecially for 1,4-BDO in polyol blends, and improves adhesion.
TEGOSTAB® B 8900 Evonik Operations GmbH, BL Comfort & Insulation TEGOSTAB® B 8900 is a silicone-based surfactant with strong cell-opening and degassing properties.