Plasticizer lignin compositions
AssigneeEvoco Limited
InventorsJason James Robinson, Mustafa Abu Ghalia, Radu Lucian Vicol, Guerino G. Sacripante
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Abstract
A polyurethane elastomer composition that contains (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender, (d) an optional crosslinker, (e) an optional colorant, (f) a surfactant, (g) a foaming agent, (h) an optional bio-additive, and a composition comprised of a plasticizer and a lignin.
Claims20
A polyurethane elastomer derived from components comprising (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender, (d) a foaming agent, (e) an optional crosslinker, (e) an optional colorant, (f) a surfactant, (g) a foaming agent, and (h) a lignin plasticizer composition comprised of a lignin and a plasticizer, wherein said lignin plasticizer composition is generated by:
- contacting and dispersing said lignin in said plasticizer,
- removing by filtration the bulk unextracted insoluble lignin solids, and
- isolating the remaining filtrate containing the plasticizer and a soluble portion of the lignin.
A process for the preparation of a polyurethane elastomer comprising mixing (a) an organic diisocyanate, (b) a polyester resin, (c) a chain extender, (d) an optional crosslinker, (e) a surfactant, (f) a foaming agent, and (g) a colorant;
- followed by mixing said (a), (b), (c), (d) when present, (e), (f) and (g), and a lignin plasticizer composition comprised of a plasticizer and a lignin and generated by:
- forming a dispersion by contacting and dispersing said lignin in said plasticizer,
- removing by filtration the bulk unextracted insoluble lignin solids, and
- isolating the remaining filtrate containing the plasticizer and a soluble portion of the lignin.
Dependencies are inferred from the claim text.