Patent · US Active

Flexible polyurethane foam having prolonged recovery time

US11518842B2 · kind B2 · utility

0Cited by

4References

9Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Kaoru Aou · Lake Jackson, US
Qinghao Meng · Angleton, US
Daniel L. Dermody · Midland, US
Hari Katepalli · Midland, US
William J. Harris · Farmington, US
An Kaga · Rosharon, US
Kathleen Barnes · Midland, US
Colin Li Pi Shan · Pearland, US

Key dates

Filing date	Mar 8, 2019
Grant date	Dec 6, 2022
Priority date	—
Expiry date	Mar 8, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/006
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Recovery times and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are formed into an emulsion that includes a polyether containing oxyethylene groups, a nonionic surfactant and certain fumed silica, carbon black or talc particles.

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