Abstract:
The present invention relates in general to thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerisation give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.
Abstract:
Spirotetrathiocarbamates (STOCs) or oxa substituted compounds (SOTOCs) of Formula (I): (Formula (I)) or bisSTOC or bisSOTOC compounds of Formula (II): (Formula (II)) wherein X , X , X , X , X , X , X , and X , are independently O or S; and preferably at least two and up to all four of X , X , X and X , and at least two and up to all four of X , X , X , and X are sulfur; Z is -CmR 2m wherein m = 1 to 4; -C(R )2SC(R )2-, C(R )2SSC(R )2-, or -C(R )2OC(R )2; n is from 0 to 4; M is selected from CH2C1, CH2SC(O)R , CH2SC(S)R , CH2S(CH2CH2S)qH wherein q is 0, 1 or 2; -CR =CH2, -CH2OC(O)CR =CH2, CH2N=C=S, CH2N=C=O, CH2NR H, CH2OH, CH2SCH2CH2CR =CH2, phenyl, C(R ) phenyl, furan, thiophene, halogen, C3-C6 cycloalkyl, C3-C6 heretocyclics, thiol, H, (III) or (IV) wherein A is S, O or phenyl; x is 0 or l; R is C1-C22 alkyl; and R is H or C1-C22 alkyl have excellent optical properties. Methods for preparing these compositions and optical lenses prepared from the compounds are also provided.
Abstract:
A process for polymerizing / curing a photopolymerizable monomer composition comprising at least one diepisulfide monomer which comprises the steps of :a) mixing to the monomer composition an effective amount of a cationic photopolymerization initiator, andb) irradiating the mixture of a) with an ultraviolet radiation to at least partially cationically photopolymerize the monomer composition.
Abstract:
Spirotetrathiocarbamates (STOCs) or oxa substituted compounds (SOTOCs) of Formula (I): (Formula (I)) or bisSTOC or bisSOTOC compounds of Formula (II): (Formula (II)) wherein X , X , X , X , X , X , X , and X , are independently O or S; and preferably at least two and up to all four of X , X , X and X , and at least two and up to all four of X , X , X , and X are sulfur; Z is -CmR 2m wherein m = 1 to 4; -C(R )2SC(R )2-, C(R )2SSC(R )2-, or -C(R )2OC(R )2; n is from 0 to 4; M is selected from CH2C1, CH2SC(O)R , CH2SC(S)R , CH2S(CH2CH2S)qH wherein q is 0, 1 or 2; -CR =CH2, -CH2OC(O)CR =CH2, CH2N=C=S, CH2N=C=O, CH2NR H, CH2OH, CH2SCH2CH2CR =CH2, phenyl, C(R ) phenyl, furan, thiophene, halogen, C3-C6 cycloalkyl, C3-C6 heretocyclics, thiol, H, (III) or (IV) wherein A is S, O or phenyl; x is 0 or l; R is C1-C22 alkyl; and R is H or C1-C22 alkyl have excellent optical properties. Methods for preparing these compositions and optical lenses prepared from the compounds are also provided.
Abstract:
Disclosed is a thiophosphine compound of formula: wherein X represents with R 1 being H or -CH 3 , R and R' represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n' is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5. The compounds can be used to make optically transparent articles such as ophthalmic lenses.
Abstract:
A process for polymerizing episulfide monomers comprising the steps of:(c) mixing to an episulfide monomer or a mixture of episulfide monomers an effective amount of at least one photopolymerization catalyst selected from the group consisting of (cyclopentadienyl) ruthenium and osmium complexes and an effective amount of at least a co-catalyst selected from phosphonium salts, phosphines and amines; and(d) irradiating the mixture of (a) with an ultra-violet radiation to polymerize the mixture.
Abstract:
Disclosed is a thiophosphine compound of formula: wherein X represents with R 1 being H or -CH 3 , R and R' represent, independently from each other, an alkyl radical, an alkoxy radical, an aryl radical or a phenyl radical which may be substituted with one or more alkyl and/or alkoxy groups, n is an integer from 0 to 4, n' is an integer from 0 to 5, x is an integer from 0 to 2, y is an integer from 1 to 5 with the proviso that y+n is an integer from 1 to 5. The compounds can be used to make optically transparent articles such as ophthalmic lenses.
Abstract:
A process for polymerizing episulfide monomers comprising the steps of:(c) mixing to an episulfide monomer or a mixture of episulfide monomers an effective amount of at least one photopolymerization catalyst selected from the group consisting of (cyclopentadienyl) ruthenium and osmium complexes and an effective amount of at least a co-catalyst selected from phosphonium salts, phosphines and amines; and(d) irradiating the mixture of (a) with an ultra-violet radiation to polymerize the mixture.
Abstract:
A process for polymerizing/curing a photopolymerizable monomer composition comprising at least one diepisulfide monomer which comprises the steps of:a) mixing to the monomer composition an effective amount of a cationic photopolymerization initiator, andb) irradiating the mixture of a) with an ultraviolet radiation to at least partially cationically photopolymerize the monomer composition.
Abstract:
A process for polymerizing episulfide monomers comprising the steps of:(c) mixing to an episulfide monomer or a mixture of episulfide monomers an effective amount of at least one photopolymerization catalyst selected from the group consisting of (cyclopentadienyl) ruthenium and osmium complexes and an effective amount of at least a co-catalyst selected from phosphonium salts, phosphines and amines; and(d) irradiating the mixture of (a) with an ultra-violet radiation to polymerize the mixture.