Silicone-containing acrylic star polymers, block copolymers and macromonomers
US5371147A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Aug 16, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F293/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to novel preformed silicone-containing acrylic copolymers including silicone-containing acrylic star polymers, graft copolymers and macromonomers. Described are linear diblock macromomomers, graft copolymers and star polymers comprising a substantially hydrophilic block or block and a substantially hydrophobic, permeable block or block, said hydrophilic block preferably comprising at least about 25% by weight of a hydrophilic acrylic-type monomer and said hydrophobic, permeable block comprising at least about 50% by weight of at least one or more polysiloxanylalkylesters of an alpha, beta unsaturated acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.