Pyrrolidone-carboxylic modified polysiloxanes having aqueous and detergent solubilities and water-in-oil emulsion capability
US8053513B2 · kind B2 · utility
2Cited by
1References
27Claims
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Key dates
| Filing date | Apr 28, 2005 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The properties of 2-pyrrolidone-4-carboxylic substituted polysiloxanes can be dramatically altered by increasing the presence of the carboxylic-substituted pyrrolidone monomer of the polysiloxane, such that the amidopolysiloxane has an acid equivalent weight of about 3:00-3,000 daltons and a molecular weight average Mw of about 1,000-60,000 daltons resulting in enhanced detergent and water solubilities and the ability to form water-in-oil emulsions thereby providing usefulness across a broad range of formulations having enhanced electrolytic and silicone and/or hydrocarbon compatibility and cleansing properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.