Dental resin composition

Claim 2

A dental resin comprising: (a) a siloxane polymer produced by polymerizing an oligomer, said oligomer consisting essentially of: (i) at least one silane compound of the formula: A--R.sub.c --Si--D.sub.3 (I) wherein D is a hydrolyzable group, R is a C 1 -C 4 alkylene group, c is an integer of 0 or 1, and A represents a group of the formula: ##STR5## wherein X is a hydrogen atom or a C 1 -C 6 alkyl group; and (ii) at least one silane compound of the formula: A'--Si--D.sub.3 (II) wherein D is a hydrolyzable group and A' is a phenyl group or a C 1 -C 9 alkyl group, and wherein said oligomer is produced under conditions such that hydrolysis of the silane compounds is effected; (b) a monomer copolymerizable with said siloxane polymer; and (c) a polymerization catalyst; and wherein said siloxane polymer (a) is at least one member selected from the group consisting of those obtained by polymerizing an oligomer comprising from 1 to 50 mol % of said silane compound of the formula (I) having bonded thereto from 50 to 99 mol % of said silane compound having the formula (II); and further wherein said dental resin comprises from 1 to 50% by wt. of said siloxane polymer (a) and from 50 to 99% by wt. of said monomer (b).

Claim 3

The dental resin composition as claimed in claim 1, wherein said monomer (b) is at least one member of acrylic acid ester-based compounds and methacrylic acid esterbased compounds.

Claim 4

The dental resin composition as claimed in claim 1, wherein said polymerization catalyst (c) is comprised of an organic peroxide.

Claim 5

The dental resin composition as claimed in claim 1, wherein said polymerization catalyst (c) is comprised of an organic peroxide and a tertiary amine, maintained in such a state that both are not brought into contact with each other, and at the initiation of the polymerization, a composition having said organic peroxide added thereto is mixed for use with a composition having said tertiary amine added thereto.

Claim 6

The dental resin composition as claimed in claim 3, wherein the amount of said organic peroxide added is from 0.1 to 5% by weight.

Claim 7

The dental resin composition as claimed in claim 8, wherein the amount of said tertiary amine added is from 0.5 to 5% by weight.

Claim 8

A dental resin composition comprising: (a) a siloxane polymer produced by polymerizing an oligomer, said oligomer consisting essentially of: (i) at least one silane compound of the formula: A--R.sub.c --Si--D.sub.3 (I) wherein D is a hydrolyzable group, R is a C 1 -C 4 alkylene group, c is an integer of 0 or 1, and A represents a group of the formula: ##STR6## wherein X is a hydrogen atom or a C 1 -C 6 alkyl group; and (ii) at least one silane compound of the formula: A'--Si--D.sub.3 (II) wherein D is a hydrolyzable group and A' is a phenyl group or a C 1 -C 9 alkyl group, and wherein the oligomer is produced under conditions such that hydrolysis of the silane compounds is effected; (b) a monomer copolymerizable with said siloxane polymer; (c) a polymerization catalyst; and (d) a filler; and wherein said siloxane polymer (a) is at least one member selected from the group consisting of those obtained by polymerizing an oligomer comprising 1 to 50 mol % of said silane compound of the formula (I) having bonded thereto from 50 to 99 mol % of said silane compound having the formula (II); and further wherein said dental resin comprises from 1 to 50% by wt. of said siloxane polymer (a) and from 50 to 99% by wt. of said monomer (b).

Claim 9

A dental resin composition comprising: (a) a siloxane polymer produced by polymerizing an oligomer, said oligomer consisting essentially of: (i) at least one silane compound of the formula: A--R.sub.c --Si--D.sub.3 (I) wherein D is a hydrolyzable group, R is a C 1 -C 4 alkylene group, c is an integer of 0 or 1, and A represents a group of the formula: ##STR6## wherein X is a hydrogen atom or a C 1 -C 6 alkyl group; and (ii) at least one silane compound of the formula: A'--Si--D.sub.3 (II) wherein D is a hydrolyzable group and A' is a phenyl group or a C 1 -C 9 alkyl group, and wherein the oligomer is produced under conditions such that hydrolysis of the silane compounds is effected; (b) a monomer copolymerizable with said siloxane polymer; (c) a polymerization catalyst; and (d) a filler; and wherein said siloxane polymer (a) is at least one member selected from the group consisting of those obtained by polymerizing an oligomer comprising 1 to 50 mol % of said silane compound of the formula (I) having bonded thereto from 50 to 99 mol % of said silane compound having the formula (II); and further wherein said dental resin comprises from 1 to 50% by wt. of said siloxane polymer (a) and from 50 to 99% by wt. of said monomer (b).

Claim 10

The dental resin composition as claimed in claim 7, wherein said monomer (b) is at least one member of acrylic acid ester-based compounds and methacrylic acid ester-based compound.

Claim 11

The dental resin composition as claimed in claim 7, wherein said polymerization catalyst (c) is comprised of an organic peroxide.

Claim 12

The dental resin composition as claimed in claim 7, wherein said polymerization catalyst (c) is comprised of an organic peroxide and a tertiary amine, maintained in such a state that the both are not brought into contact with each other, and at the initiation of the polymerization, a composition having said organic peroxide added thereto is mixed for use with a composition having said tertiary amine added thereto.

Claim 13

The resin composition as claimed in claim 9, wherein the amount of said organic peroxide added is from 0.1 to 5% by weight.

Claim 14

The dental resin composition as claimed in claim 10, wherein the amount of said tertiary amine added is from 0.5 to 5% by weight.

Claim 15

The dental resin composition as claimed in claim 7, wherein said filler (d) is comprised of an inorganic filler and/or an organic filler.

Claim 16

The dental resin composition as claimed in claim 7, wherein said filler (d) is mixed in an amount from 1 to 80% by weight.

Claim 17

The dental resin composition as claimed in claim 1, wherein said hydrolyzable group D in both silane compounds is a hydrolyzable group selected from the group consisting of chloro, methoxy, ethoxy, propoxy and isopropoxy.

Claim 18

The dental resin composition as claimed in claim 1, wherein said hydrolysis conditions comprise adding to said silane compounds tetrahydrofuran, hydrochloric acid and water.

Claim 19

The dental resin composition as claimed in claim 7, wherein said hydrolysis conditions comprise adding to said silane compounds tetrahydrofuran, hydrochloric acid and water.

Claim 20

The dental resin composition as claimed in claim 7, wherein said hydrolyzable group D in both silane compounds is a hydrolyzable group selected from the group consisting of chloro, methoxy, ethoxy, propoxy and isopropoxy.

Claim 21

The dental resin composition as claimed in claim 1, wherein said silane compound (I) is selected from the group consisting of γ-methacryloxypropyl trimethoxysilane, γ-methacryloxypropyl triethoxysilane, vinyl triethoxysilane, vinyl tris (β-methoxyethoxy) silane and vinyl trichlorosilane.

Claim 22

The dentral resin composition as claimed in claim 1, wherein the silane compound (II) is selected from the group consisting of phenyl trimethoxysilane, phenyl triethoxysilane, methyl trimethoxysilane, ethyl trimethoxysilane, n-propyl trimethoxysilane, n-butyl trimethoxysilane, phenyl trichlorosilane, methyl trichlorosilane, ethyl trichlorosilane, n-propyl trichlorosilane and n-butyl trichlorosilane.

Claim 23

The dental resin composition as claimed in claim 7, wherein said silane compound (I) is selected from the group consisting of γ-methacryloxypropyl trimethoxysilane, γ-methacryloxypropyl triethoxysilane, vinyl triethoxysilane, vinyl tris (β-methoxyethoxy) silane and vinyl trichlorosilane.

Claim 24

The dental resin composition as claimed in claim 7, wherein said silane compound (II) is selected from the group consisting of phenyl trimethoxysilane, phenyl triethoxysilane, methyl trimethoxysilane, ethyl trimethoxy-silane, n-propyl trimethoxysilane, n-butyl trimethoxysilane, phenyl trichlorisilane, methyl trichlorosilane, ethyl trichlorosilane, n-propyl trichlorosilane and n-butyl trichlorosilane.