Method for improving the performance of highly viscous concentrates of high molecular weight drag reducing polymers
US4771799A · kind A · utility
15Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Oct 29, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Oct 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
High molecular weight viscoelastic polymers are dissolved by passing the polymer solution through a die which "beads" the polymer allowing the formation of very fine filaments which are drawn into the flow. The beading and flow rate are balanced to maintain constant fine filament formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.