Invert emulsions made with non-PEG containing silicone based polyhydric emulsifiers
US10336776B1 · kind B1 · utility
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Key dates
| Filing date | Mar 29, 2017 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Mar 29, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This patent relates to invert water in oil (w/o) and water in silicone (w/si) emulsions made using non PEG/PPG containing polyhydric silicone emulsifiers. The polyhydric silicone polymers are based on allyl trimethylolpropane and pentaerythritol modified organic groups and do not contain any PEG and/or PPG groups (also known as polyethylene glycol and polypropylene glycols, polyethers, polyglycols,). These emulsions show improved emulsification stability and provide a light feel compared to emulsions made with other silicone based PEG/PPG compounds which are commonly used in the field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.