Polymer polyol and process for producing the same
US11976151B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
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Key dates
| Filing date | Oct 26, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Oct 26, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F285/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a process for producing a polymer polyol, comprising: (a) reacting a first mixture comprising an initiator, a polyol, a diluent, a stabilizer, a styrene-based monomer and a nitrile-based monomer; and (b) continuously adding, to the first mixture, a second mixture comprising an initiator, a polyol, a stabilizer, a styrene-based monomer and a nitrile-based monomer to react, wherein the first mixture and second mixture comprise the stabilizer in a weight ratio of 1:1 to 3, respectively, and a polymer polyol produced according to the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.