Polyether phosphates
US6191253A · kind A · utility
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5Claims
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Key dates
| Filing date | Jun 9, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/908
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A dispersant for aqueous mill-bases obtainable by reacting a polyethylene glycol with a molar excess of a hydroxycarboxylic acid containing from 4 to 17 carbon atoms or lactone thereof and/or with a C.sub.3-4 -alkylene oxide to form a polymeric diol and phosphating the diol. The preferred hydroxycarboxylic acid or lactone is .epsilon.-caprolactone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.