Blends of polypropylene polyglycol and phenolic glycol ethers and method of foam control using such blend
US9415330B2 · kind B2 · utility
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3References
7Claims
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Key dates
| Filing date | Dec 1, 2011 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Mar 23, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2201/007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A blend comprising from 1 to 99 weight percent one or more polypropylene glycols wherein each polypropylene glycol has a weight average molecular weight of greater than or equal to 1000 grams/mole and from 1 to 99 weight percent one or more dipropylene glycol phenyl ethers and/or diethylene glycol phenyl ethers wherein the blend has a viscosity (ASTM D445, @ 25° C.) of less than or equal to 400 cSt and viscosity (ASTM D445, @ 40° C.) of less than or equal to 200 cSt, is provided. Processes using the blend in mining applications are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.