Patent · US Active

Lignin-containing polyurethanes

US12173159B2 · kind B2 · utility

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11Claims

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Assignee

RAMPF HOLDING GMBH & CO. KG · DE

Inventors

Frank Dürsen · Münsingen, DE
Gunnar Geiger · Dußlingen, DE
Andrea Sander · Gräfenberg, DE
Michael Kugler · Vestenbergsgreuth, DE

Key dates

Filing date	Apr 5, 2019
Grant date	Dec 24, 2024
Priority date	—
Expiry date	Feb 19, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J175/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to generally relates to polyurethanes containing at least one lignin compound. In particular, the invention relates to a reactive polyurethane system comprising at least one polyol, at least one polyisocyanate and at least one lignin compound. In further aspects, the invention relates to a process for producing a polyurethane from a reactive system as disclosed, a polyurethane obtainable by such process, polyurethane adhesives, articles comprising cured polyurethane adhesives and a method for adhesive bonding.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.