Patent · US Active

Polyurethane with delayed relaxation behaviour for compression products

US12240936B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

MEDI GMBH & CO. KG · DE

Inventors

Christa Huger · Kulmbach, DE
Angelika Scherm · Immenreuth, DE
Seema Agarwal · Marburg, DE
Andreas Greiner · Amöneburg, DE
Pin Hu · Bayreuth, DE

Key dates

Filing date	Jul 15, 2023
Grant date	Mar 4, 2025
Priority date	—
Expiry date	Jul 15, 2043

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/03
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to medical aids, in particular compression products, such as compression stockings or bandages. Specifically, the invention provides a compression product comprising an elastic component or material that comprises polyurethane polymers and shows a delayed continuous relaxation behaviour. The invention furthermore provides polyurethane polymers containing N-diol having a delayed continuous relaxation behavior and corresponding quaternized polyurethane polymers, a process for producing the polyurethane polymers, a blend with elastane, as well as uses thereof.

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