Thermoplastic polyurethanes derived from lignin monomers
AssigneeVito NV
InventorsOrtiz Pablo Urraca, Richard Vendamme
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Abstract
In general the present invention relates to thermoplastic polyurethanes containing lignin-derived monomers, lignin model compounds or the products of their respective functionalization in their structure. More specifically, this process relates to the use of 4-hydroxylalkylphenols and their derivatives as lignin-derived monomers or lignin model compounds. These can act either as chain extenders or be part of the polyol. The thermoplastic polyurethanes can be partially or fully bio-based. Furthermore, the invention relates to a method for preparing these thermoplastic polyurethanes and to their use.
Claims15
A thermoplastic polyurethane comprising lignin-derived monomers, lignin model compounds, or the products of their respective functionalization according to formula (Ib):
- where:
- R1 and R2 independently represent H or alkyl;
- R3 and R4 independently represent H or oxy-alkyl;
- n is 0, 1, 2, or 3;
- and
- m is an integer from 1 to 12.
Dependencies are inferred from the claim text.