Patent · US Active

Damping element in shoe soles

US9894957B2 · kind B2 · utility

0Cited by

8References

20Claims

0Family size

Assignee

BASF SE

Inventors

Frank Prissok · Bohmte, DE
Andre Kamm · Bohmte, DE
Bin-Eric Chen · Shanghai, CN
Yoke Khim Raymond Toh · Singapore, SG

Key dates

Filing date	Nov 14, 2011
Grant date	Feb 20, 2018
Priority date	—
Expiry date	Dec 18, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2475/04
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a process for producing a shoe sole comprising a hybrid material made of a polyurethane foam as matrix material and of foamed particles of thermoplastic polyurethane by preparing an inlay of joined expanded particles (c″) of thermoplastic polyurethane and placing the joined expanded particles of thermoplastic polyurethane in a mould and embedding the inlay with a reaction mixture obtainable by mixing (a) polyisocyanates with (b) compounds having hydrogen atoms reactive toward isocyanates, and if appropriate, with (d) chain extenders and/or crosslinking agents, and with (e) catalysts, and with (f) blowing agents, and with (g) further additives and reacting the reaction mixture to give the shoe sole. The present invention further relates to shoe soles, obtainable by such a process.

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