Viscoelastic flexible foams comprising hydroxyl-terminated prepolymers
US10793692B2 · kind B2 · utility
3Cited by
58References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Mar 14, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a process for preparing viscoelastic flexible polyurethane foam comprising reacting an isocyanate component with an isocyanate-reactive component that comprises a polyol blend having a hydroxyl number of 56 to 250 and an average functionality of greater than 2, and a hydroxyl-terminated prepolymer. The invention also relates to viscoelastic flexible polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.