Adhesive composition
AssigneeTokuyama Soda Kabushiki Kaisha
InventorsToshio Kawaguchi, Shigeri Shibuya, Koshi Kusumoto
Life of this patent
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Abstract
Disclosed is an adhesive composition comprising (a) 100 parts by weight of a monomer mixture comprising a vinyl monomer having an acidic group in the molecule and a vinyl monomer copolymerizable with said vinyl monomer, (b) 10 to 500 parts by weight of a filler, (c) 0.01 to 10 parts by weight of a polymerization initiator and (d) 0.01 to 10 parts by weight of ascorbic acid or a derivative thereof. This adhesive composition has a high bonding force and an excellent durability even in a severe environment, for example, in the environment in the oral cavity. Accordingly, this adhesive composition is especially valuable used as a dental adhesive.
Claims15
An adhesive composition comprising (a) 100 parts by weight of a monomer mixture comprising a vinyl monomer having an acidic group in the molecule represented by the following formula:
- ##STR3## wherein R.sub.1 stands for a hydrogen atom or a methyl group, and n is a number of from 4 to 12,
- and a vinyl monomer copolymerizable with said vinyl monomer, (b) 10 to 500 parts by weight of a filler, (c) 0.01 to 10 parts by weight of a polymerization initiator and (d) 0.01 to 100 parts by weight of ascorbic acid or a derivative thereof.
An adhesive composition comprising (a) 100 parts by weight of a monomer mixture comprising a vinyl monomer having an acidic group in the molecule represented by the following formula:
- ##STR4## wherein R.sub.2 stands for a hydrogen atom or a methyl group, m is a number of from 2 to 4, and X stands for ##STR5## and a vinyl monomer copolymerizable with said vinyl monomer, (b) 10 to 500 parts by weight of a filler, (c) 0.01 to 10 parts by weight of a polymerization initiator and (d) 0.01 to 10 parts by weight of ascorbic acid or a derivative thereof.
An adhesive resin composition of a two-pack system comprising (i) a liquid component comprising a vinyl monomer having an acidic group in the molecule, which is selected from the group consisting of a monomer represented by the following formula:
- ##STR6## wherein R.sub.1 stands for a hydrogen atom or a methyl group, and n is a number of from 4 to 12,
- and a monomer represented by the following formula:
- ##STR7## wherein R.sub.2 stands for a hydrogen atom or a methyl group, m is a number of from 2 to 4, and X stands for ##STR8## or a monomer mixture of said acidic group-containing vinyl monomer and a vinyl monomer copolymerizable therewith and (ii) a powder component comprising ascorbic acid or a derivative thereof and a filler, wherein the components (i) and (ii) are filled in different packs and, at the time of curing, appropriate amounts of the liquid and powder components are taken out from the packs and are mixed.
Dependencies are inferred from the claim text.