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US 12,398,233 B2Granted
Method for producing a mixture comprising at least one compound having at least two hydroxy and/or amino groups and use thereof for producing a polymer
AssigneeRAMPF Advanced Polymers GmbH & Co. KG
InventorMichael Kugler
Life of this patent
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Abstract
The present invention relates to a method for producing a mixture comprising at least one compound having at least two hydroxy and/or amino groups made of a biomass material. The invention also relates to such a mixture and to the use thereof for producing a polymer such as for example a polyurethane foam.
Claims18
A method for producing a mixture comprising at least one compound (I) having at least two hydroxy and/or amino groups, the method comprising the following steps:
- a) providing at least one biomass material,
- b) treating the at least one biomass material with at least one first organic solvent at a temperature of 30-200° C. to obtain a first mixture comprising a solid,
- c) separating the solid from the first mixture to obtain a separated solid,
- d) treating the separated solid with at least one second solvent under alkaline conditions at a temperature of 30-200° C. to obtain a second mixture comprising a liquid phase,
- e) separating the liquid phase from the second mixture to obtain a separated liquid phase,
- f) at least partially removing the at least one second solvent from the separated liquid phase to obtain a third mixture,
- g) reacting the third mixture with at least one compound (II) having at least two hydroxy and/or amino groups.
4 more elements
Dependencies are inferred from the claim text.