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US 2026/0286090 A1Published application
Use of a lignin-based filler for producing a polymer composition
AssigneeUpm-Kymmene Corporation
InventorsBarbara GALL, Florian DIEHL
Life of this patent
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Abstract
Use of a lignin-based filler, the color of which is represented by an L value of 25-50, an a value of 7-15, and a b value of 11-22, for producing a polymer composition, the color of which is represented by an L value of at most 22, an a value of at most 7, and a b value of at most 9, is disclosed. Further is disclosed use of the produced polymer composition and a polymer composition
Claims18
A method of producing a polymer composition, the method comprising:
- combining at least one polymer with a lignin-based filler, the color of which is represented by an L value of 25-50, an a value of 7-15, and a b value of 11-22, the amount of lignin-based filler being 0.5-50 weight-% based on the total weight of the polymer composition, the lignin-based filler being prepared from lignin subjected to hydrothermal carbonization treatment,
- wherein the color of the resulting polymer composition is represented by an L value of at most 22, an a value of at most 7, and a b value of at most 9.
A polymer composition comprising:
- a lignin-based filler in an amount of 0.5-50 weight-% based on the total weight of the polymer composition, the lignin-based filler being prepared from lignin subjected to hydrothermal carbonization treatment;
- and
- at least one polymer,
- wherein a color of the polymer composition represented by an L value of at most 22, an a value of at most 7, and a b value of at most 9,
- wherein the polymer composition formed by combining the lignin-based filler, the color of which is represented by an L value of 25-50, an a value of 7-15, and a b value of 11-22, with the at least one polymer.
2 more elements
Dependencies are inferred from the claim text.