Polyester polyol, composition for polyurethane, composition for polyurethane foam, polyurethane resin, and polyurethane foam
US9873757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Apr 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a polyester polyol, preferably a plant-derived polyester polyol, suitable for a composition for polyurethane foam that contributes to the reduction of load on the environment and has a good balance of high resilience, moderate hardness, and high durability as a cushioning material for vehicle seat cushions. A polyester polyol having a hydroxyl value in the range of 15 to 100 mgKOH/g according to the present invention is produced by a condensation of raw materials comprising at least one selected from the group consisting of fatty acids having a hydroxy group and fatty acid esters having a hydroxy group with a polyhydric alcohol having an average number of functional groups of more than three but not more than eight. The raw materials contain 90% to 100% by mass of a fatty acid having a hydroxy group and a fatty acid ester having a hydroxy group in total.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.