Polyurethanes from depolymerized lignin containing lignin monomers
AssigneeVito NV
InventorsOrtiz Pablo Urraca, Richard Vendamme
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Abstract
In general the present invention relates to polyurethanes based on the reaction of (a) a disocianate composition with (b) depolymerized lignin containing lignin-derived monomers, or the products of their respective functionalization; (c) a polyol composition, if desired (d) chain extenders, if desired. (e) additives, if desired. More specifically, this process relates to the use of depolymerized lignins containing varying amounts of 4-hydroxylalkylphenols or 4-alkylphenols and their derivatives. The polyurethanes can be partially or fully bio-based. Furthermore, the invention relates to a method for preparing these polyurethanes and to their use.
Claims19
A polyurethane comprising a product of reacting an isocyanate with a composition comprising depolymerized lignin oil, the depolymerized lignin oil comprising from 10% by weight to about 90% by weight lignin-derived monomers according to Formula (I):
- where:
- R represents OH or CH3;
- R1 and R2 independently represent H or alkyl;
- R3 and R4 independently represent H or oxy-alkyl;
- R5 represents H or hydroxyalkyl;
- and
- n is 0, 1, 2, or 3.
Dependencies are inferred from the claim text.