Use of reactive polymeric surfactants in the formation of emulsions
US7199185B2 · kind B2 · utility
12Cited by
2References
24Claims
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Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Nov 2, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2985
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reactive polymeric surfactants are disclosed, and their use in processes for preparation of microcapsules, and in stabilising emulsions. The surfactants are random graft polymers or block copolymers which contain both hydrophobic and hydrophilic units and in which the hydrophobic unit includes a hydrophilic cross-linking unit which reacts with (a) a wall forming ingredient in a microencapsulation process, or (b) an ingredient in the disperse phase of an emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.