Patent · US Active

Polyurethane with delayed relaxation behaviour for compression products

US11746179B2 · kind B2 · utility

0Cited by

1References

18Claims

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	Aug 8, 2018
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Jun 5, 2040

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. More specifically, the invention relates to compression products comprising fibre forming polyurethane polymers showing a delayed continuous relaxation behaviour. The invention furthermore relates to polyurethane polymers containing N-diol and corresponding quaternised polyurethane polymers, to a process of producing the polyurethane polymers, to blends with elastane, as well as to uses.

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