Polyurethane cast elastomers based on poly(butylene oxide) polyols and method for making polyurethane cast elastomers
US12202931B2 · kind B2 · utility
0Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2019 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Aug 17, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2654
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydroxyl-containing copolymers of butylene oxide and ethylene oxide having a hydroxyl equivalent weight of at least 150, an average of 1.8 to 6 hydroxyl groups per molecule of which hydroxyl groups at least 70% are primary hydroxyl groups and an oxyethylene content of no greater than 10% by weight based on the weight of the copolymer, are useful for making polyurethanes. These polyols are characterized by high reactivity and fast curing times. Polyurethanes made using these polyols have excellent mechanical properties and are highly hydrophobic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.