FIELD: chemistry.
SUBSTANCE: inventions refer to medical materials and can be used for polymer materials for soft contact lenses (SCL) of prolonged wearing. Engineering problem is development of polymer composition in the form of interpenetrating grids for SCL of prolonged wearing, possessing oxygen barrier property, hydrophilic properties, mechanical strength and optical transparency in both hydrated and dehydrated state, as well as development of simplified, efficient production method not requiring large quantity of highly toxic organic solvents. Offered are polymer composition representing bi-phase silicone-hydrogel material in the form of sequential interpenetrating grids consisting of cross-linked polysiloxane that is reaction product of vinyl-containing and hydro-containing oligosiloxane, and hydrophilic polymer that is cross-linked polyvinyl alcohol, and production method thereof including synthesis of cross-linked polysiloxane; polysiloxane saturation with monomeric mixture containing vinylacetate, cross-linking monomer and radical polymerisation initiator; copolymerisation of vinylacetate and cross-linking monomer, alcoholysis of cross-linked polyvinylacetate and production of silicone-hydrogel polysiloxane - polyvinyl alcohol.
EFFECT: production of polymer composition in the form of interpenetrating grids for SCL of prolonged wearing, possessing oxygen barrier property, hydrophilic properties, mechanical strength and optical transparency, and development of simplified, efficient production method not requiring large quantity of highly toxic organic solvents.
6 cl, 1 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| POLYMER COMPOSITION FOR PROLONGED-USE SOFT CONTACT LENSES AND A METHOD FOR PREPARATION THEREOF | 2004 |
|
RU2269552C1 |
| METHOD OF PRODUCING SILK FIBROIN BASED FILM FOR MAKING CONTACT LENSES | 2010 |
|
RU2443805C1 |
| SILOXANE MATERIALS FOR INSERT WITH HIGH REFRACTIVE INDEX FOR CONTACT LENSES CONTAINING EMBEDDED ELEMENT | 2021 |
|
RU2807549C1 |
| PREPOLYMERS WITH PENDANT POLYSILOXANE-CONTAINING POLYMER CHAINS | 2008 |
|
RU2462361C2 |
| OLIGOSILOXANES WITH HYDROPHILIC AND HYDROPHOBIC BRANCHES AS A MODIFIER FOR SILOXANE RUBBER AND A METHOD FOR PRODUCTION THEREOF | 2019 |
|
RU2685545C1 |
| MATERIALS FOR INSERTS WITH HIGH OXYGEN PERMEABILITY AND HIGH REFRACTION INDEX | 2021 |
|
RU2823149C1 |
| SILICONE-CONTAINING PREPOLYMERS SUBJECTED TO WATER PROCESSING AND VERSIONS OF APPLICATION THEREOF | 2011 |
|
RU2576317C2 |
| POLYMER COMPOSITION FOR PROTON-CONDUCTING MEMBRANE AND METHOD OF ITS PRODUCTION | 2007 |
|
RU2325733C1 |
| WET SILICONE HYDROGEL CONTACT LENSES | 2021 |
|
RU2805658C1 |
| HYDROPHILISED POLYDIORGANOSILOXANE VINYL CROSS-LINKING AGENTS AND METHODS OF USE THEREOF | 2016 |
|
RU2820814C2 |
