US4918136A
Expired / Lapsed
US
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Adhesive composition
Assignee: Tokuyama Corp
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Filing: 1989-03-22
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Granted: 1990-04-17
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Expires: 2009-03-22
Abstract
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.
Inventors
- 👤 Toshio Kawaguchi
- 👤 Shigeri Shibuya
- 👤 Koshi Kusumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:09
CPC Classifications
C; C09; C09J; C09J4/00; A; A61; A61K; A61K6/00; A61K6/40; A61K6/70; A61K6/71; A61K6/72; A61K6/73; A61K6/76; A61K6/77
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
97 words
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 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.
Claim 2
Dependent Claim
97 words
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 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.
Claim 3
Dependent Claim
101 words
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 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.
Claim 4
Dependent Claim
101 words
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 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.
Claim 5
Dependent Claim
162 words
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 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 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.
Claim 6
Dependent Claim
162 words
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 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 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.
Claim 7
Dependent Claim
32 words
An adhesive composition as set forth in claim 1 or 2, wherein the content of the vinyl monomer having an acidic group in the monomer mixture is 1 to 90% by weight.
Claim 8
Dependent Claim
26 words
An adhesive composition as set forth in claim 1 or 2, wherein the copolymerizable vinyl monomer is an acrylic acid ester or a methacrylic acid ester.
Claim 9
Dependent Claim
29 words
An adhesive composition as set forth in claim 1 or 2, wherein the filler is a homopolymer or copolymer of an acrylic acid ester or a methacrylic acid ester.
Claim 10
Dependent Claim
31 words
An adhesive composition as set forth in claim 1 or 2, wherein the polymerization initiator is at least one member selected from the group consisting of organic peroxides and tertiary amines.
Claim 11
Dependent Claim
17 words
An adhesive composition as set forth in claim 6, wherein the organic peroxide is a diacyl peroxide.
Claim 12
Dependent Claim
30 words
An adhesive composition as set forth in claim 4, wherein the content of the vinyl monomer having an acidic group in the monomer mixture is 1 to 50% by weight.
Claim 13
Dependent Claim
23 words
An adhesive composition as set forth in claim 1 or 2, wherein said filler has a particle size of 0.01 to 500 μm.
Claim 14
Dependent Claim
21 words
An adhesive composition as set forth in claim 10, wherein said filler has a particle size of 0.01 to 200 μm.
Claim 15
Dependent Claim
26 words
An adhesive composition as set forth in claim 1 or 2, wherein said polymerization initiator comprises a mixture of an organic peroxide and a tertiary amine.
Claim 16
Dependent Claim
25 words
An adhesive composition as set forth in claim 1 or 2, wherein said polymerization initiator comprises a mixture of an organic peroxide and an α-diketone.
Claim 17
Dependent Claim
29 words
An adhesive composition as set forth in claim 1 or 2, wherein said ascorbic acid is selected from the group consisting of L-ascorbic acid, D-iso-ascorbic acid and dehydroascorbic acid.
Claim 18
Dependent Claim
29 words
An adhesive composition as set forth in claim 1 or 2, wherein said ascorbic acid derivative is selected from the group consisting of metal salts thereof and esters thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |