Production of rigid polyurethane foam
AssigneeEvonik Operations GmbH
InventorsMartin Glos, Jobst Grimminger, Michael Ferenz
Life of this patent
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Abstract
What are described are (a) a composition suitable for production of rigid polyurethane foam, comprising at least one isocyanate component, a polyol component, optionally a catalyst that catalyses the formation of a urethane or isocyanurate bond, optionally blowing agents, where the composition additionally comprises polyalkylsiloxane (PAS) containing no polyether modification, and polyether-modified siloxane, (b) a process for producing rigid polyurethane foam using polyalkylsiloxanes and polyether-modified siloxane, (c) the rigid polyurethane foam Thus obtainable and (d) the use thereof.
Claims19
A composition for production of rigid polyurethane foam, the composition comprising at least one isocyanate component, a polyol component, optionally a catalyst that catalyses the formation of a urethane or isocyanurate bond, optionally blowing agents, where the composition additionally comprises:
- i) a polyalkylsiloxane composition comprising at least one poly alkylsiloxane containing no polyether modification comprising a polyalkylsiloxane having a structure
- and
- ii) a polyether-modified siloxane.
Dependencies are inferred from the claim text.