FIELD: process engineering.
SUBSTANCE: invention relates to techniques of producing soft contact lenses. Proposed method comprises dissolving coloring agent in hydrophilic monomer represented by N-vinylpyridone, copolymerising obtained solution with hydrophobic monomer, i.e. methyl methacrylate in the presence of divinyl crosslinking agent. It further on comprises processing of obtained polymer mix and producing contact lenses. Proposed method differs from known ones in that it uses anthraquinone dye as a dye and in that monomer copolymerisation is performed under effect of ionising radiation.
EFFECT: simplified technology, improved physical-chemical properties on lenses.
4 cl, 1 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING POLYMER MATERIAL FOR FLEXIBLE CONTACT LENSES | 1997 |
|
RU2119927C1 |
| METHOD OF OBTAINING ION-EXCHANGING POLYMER HYRDOGELS FOR TREATMENT OF CHEMICAL BURNS OF EYES (VERSIONS) | 2010 |
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| BLACK DYE COMPOSITION FOR PHENOL PLASTICS | 1991 |
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| METHOD OF PURIFICATION OF THE SHEET DOUBLE-LAYER PLEXIGLAS FOR THE COLOR FILTERS | 2005 |
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| PROCESS FOR PREPARING CROSS-LINKED HYDROPHILIC COPOLYMERS | 0 |
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SU1054365A1 |
| METHOD OF PRODUCING HYDROPHILIC JOINED COPOLYMERS OF N-VINYLPYRROLIDONE FOR CORRECTING CONTACT LENSES | 0 |
|
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| POLYMER COMPOSITION FOR SOFT CONTACT LENSES OF PROLONGED WEARING AND METHOD OF PRODUCTION THEREOF | 2007 |
|
RU2334770C1 |
| METHOD OF PRODUCING COLORED FILM-FORMING COMPOSITION | 1989 |
|
RU2012566C1 |
| METHOD OF PREPARING LIGHT FILTER FOR SIGHT PROTECTION | 1991 |
|
RU2015140C1 |
| METHOD FOR COLOURING POLYMERIC MATERIAL | 0 |
|
SU1008312A1 |
