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AssigneeCovestro Deutschland AG
InventorsIrene Cristina Latorre Martinez, Rual Pires, Frank Richter, Heidar Darmandeh, Laura Woods, Achim Meyer, Steven Thiering
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The present invention relates to a polyisocyanate composition comprising at least one bridging cis-tetrahydrofuran-2,5-diyl-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and/or biuret structure and/or comprising at least one bridging trans-tetrahydrofuran-2,5-diyl)-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and/or biuret structure.
A polyisocyanate composition comprising at least one bridging cis-tetrahydrofuran-2,5-diyl-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and/or biuret structure
A process for preparing a polyisocyanate composition, comprising reacting at least one cis-2,5-bis(isocyanatomethyl) tetrahydrofurane and/or trans-2,5-bis(isocyanatomethyl) tetrahydrofurane.
Dependencies are inferred from the claim text.