Hydrophilic macromer and hydrogel comprising said monomer
A macromonomer, hydrogel technology, used in instruments, optical components, optics, etc., to achieve the effect of high oxygen permeability
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Embodiment 1
[0091] A three-neck reactor equipped with a condenser, temperature probe and addition funnel was charged with 7.55 g of methallyl alcohol-initiated polyether having a hydroxyl content of 1.953 meq / g and 15 ppm (as Pt) in IPA (2 - 5% chloroplatinic acid in propanol). The mixture was heated to 85-90° C. and 5 g of α-dimethylbutylsiloxy-ω-dimethylhydrogensiloxy-terminated polydimethylsilyl with 2.950 meq / g hydride were added dropwise oxane. Once the exotherm ceased, the reaction was continued at 95-100°C for 6 hours, using 1 H and 29Si-NMR confirmed the completion of the reaction. About 30 mL of toluene was added to the material, the reactor was cooled in an ice / water bath and 2.7 g of triethylamine was added. To this cold solution was added dropwise 1.8 g of methacryloyl chloride and the reaction was allowed to continue for about 4 hours, after which time the material was filtered several times to remove any salt produced. The clear solution obtained after filtration was th...
Embodiment 2
[0093] A three-neck reactor equipped with a condenser and temperature probe was charged with 6.7 g of methallyl alcohol-initiated polyether with a hydroxyl content of 1.799 meq / g, 13 g of α-dimethyl butylbutylsiloxy-omega-dimethylhydrogensiloxy terminated polydimethylsiloxane and 75 ppm sodium propionate. The mixture was slowly heated to 95°C and 25 ppm of Pt(0) catalyst was added at 65°C. Once the exotherm ceased, the reaction was continued at 95-100°C for 6 hours, using 1 H and 29 Si-NMR confirmed the completion of the reaction. To this material was added approximately 30 mL of toluene, the reactor was cooled in an ice / water bath and 2.7 g of triethylamine was added. To this cold solution was added dropwise 1.9 g of methacryloyl chloride and the reaction was allowed to continue for about 4 hours, after which time the material was filtered several times to remove any salt produced. The clear solution obtained after filtration was then stirred over 40 g of a basic ion exch...
Embodiment 3
[0095] A three-neck reactor equipped with a condenser and temperature probe was charged with 16.3 g of methallyl alcohol-initiated polyether with a hydroxyl content of 1.953 meq / g, 10 g of di-alpha with 3.680 meq / g hydride, Omega-dimethylhydrogensiloxy terminated polydimethylsiloxane and 75 ppm sodium propionate. The mixture was slowly heated to 95°C and 25 ppm of Pt(0) catalyst was added at 65°C. Once the exotherm ceased, the reaction was continued at 95-100°C for 6 hours, using 1 H and 29 Si-NMR confirmed the completion of the reaction. To this material was added approximately 100 mL of hexane, the reactor was cooled in an ice / water bath and 7.5 g of triethylamine was added. To this cold solution was added dropwise 5 g of methacryloyl chloride and the reaction was allowed to continue for about 4 hours, after which time the material was filtered several times to remove any salt produced. The clear solution obtained after filtration was then stirred on 30 g of basic ion ex...
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