Invention Application
- Patent Title: Rigid Polyurethane Based Foam with Compression Strength and Fire Resistance
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Application No.: US17755611Application Date: 2020-10-29
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Publication No.: US20220372205A1Publication Date: 2022-11-24
- Inventor: Markus SCHUETTE , Christian RENNER , Olaf JACOBMEIER , Sirus ZARBAKHSH
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen am Rhein
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen am Rhein
- Priority: EP19207519.0 20191106
- International Application: PCT/EP2020/080345 WO 20201029
- Main IPC: C08G18/08
- IPC: C08G18/08 ; C08G18/12 ; C08G18/22 ; C08G18/18 ; C08G18/40 ; C08G18/48 ; C08G18/42 ; C08G18/09 ; C08G8/10 ; C08J9/14

Abstract:
Described herein is a method for the preparation of a rigid polyisocyanate based foam, including mixing (a) polyisocyanate, (b) at least one compound having at least two hydrogen atoms reactive towards isocyanates, (c) optionally flame retardant, (d) blowing agent, (e) catalyst and (f) optionally further additives, to form a reaction mixture and reacting the reaction mixture to obtain the polyurethane based rigid foam where the compound reactive towards isocyanates (b) includes an aromatic polyetherpolyol (b2) and at least one compound selected from the group consisting of an aromatic polyesterpolyol (b1) and a polyetherpolyol (b3) different from polyether (b2). Also described herein is a rigid polyisocyanate based foam obtained from such a method and a polyol component for the production of a polyisocyanate based foam.
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