Method for producing polyester polyols and use thereof in polyurethane
US11180606B2 · kind B2 · utility
0Cited by
8References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 24, 2017 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Aug 24, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B1/74
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester polyol of formula produced by a first polycondensation (a) of a sugar alcohol Z in C3 to C8 and two diacids Y and Y′ which are the same or different in C4 to C36, and a second polycondensation (b) of the product produced in (a) with two diols X and X′ which are the same or different in C2 to C12, the polymer including such a polyester polyol. Also, a method for producing the polyester polyols and the use thereof in foams, adhesives, coatings or elastomers of polyurethane or polyisocyanurate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.