Patent · US Active

Viscoelastic polyurethane foams

US11912815B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Qinghao Meng · Angleton, US
Meagan Broadway · Freeport, US
Christopher Thiede · Lake Jackson, US
Morgan A. Springs · Angleton, US
Van M. Delk · Freeport, US

Key dates

Filing date	Aug 5, 2019
Grant date	Feb 27, 2024
Priority date	—
Expiry date	Feb 19, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2110/0083
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Flexible polyurethane foams having high airflows and excellent viscoelastic properties are made using a polyol mixture that includes a certain liquid polyester, certain ethylene oxide polyols and certain propylene oxide polyols, and a polymeric MDI. When used in applications such as bedding, the high airflows contribute to an improved sense of comfort by the user.

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