Flame-retarded rigid polyurethane foams
AssigneeCovestro Deutschland AG
InventorsHartmut Nefzger, Persefoni Hilken, Markus Meuresch, Aurel Wolf
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Abstract
A process for producing rigid PUR/PIR foams comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, A5 optionally auxiliaries and additives, and B an organic polyisocyanate component. Component A1 comprises a triurethane triol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.
Claims15
A process for producing rigid PUR/PIR foams comprising
- A1 an isocyanate-reactive component,
- A2 a flame retardant,
- A3 a blowing agent,
- A4 a catalyst,
- A5 optionally auxiliaries and additives, and
- B an organic polyisocyanate component,
- wherein component A1 comprises
- a triurethane triol A1.1 and
- a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol and polyether ester polyol.
A mixture comprising a triurethane triol A1.1 and a compound A1.2, wherein the compound A1.2 is selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol.
Dependencies are inferred from the claim text.