Polymerizable silica sol, adamantane derivative for use in the sol and cured resin prepared using the same
AssigneeKawasaki Steel Corporation
InventorsTaizo Mohri, Katsuhiko Takagi, Yoshihiro Naruse, Yukio Asami
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Abstract
This invention provides polymerizable silica sols in which at least one monomer containing double bond is used as its dispersion medium, especially a silica sol in which the monomer containing double bond is a monomer containing double bond and OH group or is a monomer having an adamantane structure. This invention also provides compositions which comprise these silica sols as composing elements, cured resins that are obtained by polymerizing these silica sols alone or together with other copolymerizable components, and new adamantane derivatives for use in these silica sols.
Claims29
A polymerizable silica sol comprising a colloidal silica dispersed in a dispersion medium, wherein the dispersion medium comprises:
- at least one compound selected from the group consisting of compounds represented by the formulae ##STR4## and wherein Ad is an adamantane group R.sup.1 and R.sup.2 are independently selected form hydrogen, methyl or ethyl, R.sup.3 is hydrogen or methyl and n is an integer of 1 or 2;
- and
- at least one compound selected from non-hydroxy containing (meth) acrylate-based monomer.
A polymerizable silica sol comprising a colloidal silica dispersed in a dispersion medium, wherein the dispersion medium comprises:
- at least one compound selected from the group consisting of compounds represented by the formulae ##STR5## wherein Ad is an adamantane group, R.sup.1 and R.sup.2 are independently selected from hydrogen, methyl or ethyl, R.sup.3 is hydrogen or methyl and n is an integer of 1 or 2;
- and
- at least one hydroxy containing (meth)acrylate-based monomer.
A polymerizable silica sol comprising a colloidal silica dispersed in a dispersion medium, wherein th dispersion medium comprises:
- at least one compound selected from the group consisting of compound represented by the formulae ##STR7## wherein Ad is an adamantane group, R.sup.1 and R.sup.2 are independently selected from hydrogen, methyl or ethyl, R.sup.3 is hydrogen or methyl and n is an integer of 1 or 2;
- at least one non-hydroxy containing (meth)acrylate-based monomer;
- and
- at least one hydroxy containing (meth)acrylate-based monomer.
Dependencies are inferred from the claim text.