Polyoxyalkylene derivative and process of producing the same
US6875841B2 · kind B2 · utility
21Cited by
2References
15Claims
0Family size
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Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Dec 18, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/33303
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A polyoxyalkylene derivative is represented by formula (I): wherein Z represents a residue of a compound having 2 to 8 hydroxyl groups; AO represents an oxyalkylene group having 2 to 18 carbon atoms; n and m each represent an integer of 0 to 2000 provided that both n and m do not represent 0; a and b each represent an integer satisfying the relationships: 2≦a+b≦8 and 1≦b; R represents a hydrocarbon group having 1 to 30 carbon atoms; and X represents a divalent hydrocarbon group having 3 to 10 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.