Water soluble silicone material
US10118994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jan 31, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water soluble silicone macromer comprising a siloxane backbone having grafted thereto a suitable number of hydrophilic groups to render the macromer water soluble, the macromer comprising a polymerizable functional group grafted to the siloxane backbone. In one aspect, the present invention provides a water soluble silicone macromer having a structure of Formula (1): where M is a hydrophilic group or segment; L is a hydrophilic or hydrophobic linkage; N is a hydrophilic or hydrophobic group or segment. Q is a polymerizable functional group; x is zero or an integer greater than zero; y is zero or an integer greater than zero; v is zero or an integer greater than zero; and z is greater than zero, with the proviso that both y and v are not zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.