US4511686A
Expired / Lapsed
US
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Cyanoacrylate adhesive composition containing tannins
Assignee: 3M Co
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Filing: 1983-11-14
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Granted: 1985-04-16
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Expires: 2003-11-14
Abstract
Abstract Cyanoacrylate adhesive compositions containing a tannin, e.g., digallic acid, tannic acid, or other hydrolyzable or condensed tannin. The inclusion of tannin increases adhesion and heat resistance of the cured adhesive on metal substrates.
Inventors
- 👤 George H. Millet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:29
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
29 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin.
Claim 2
Dependent Claim
29 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin.
Claim 3
Dependent Claim
30 words
A composition according to claim 1, wherein said cyanoacrylate monomer has the formula ##STR5## wherein R is a substituted or unsubstituted C 1-16 alkyl, cycloalkyl, alkenyl, cycloalkenyl, or aryl radical.
Claim 4
Dependent Claim
13 words
A composition according to claim 1, wherein said tannin comprises a hydrolyzable tannin.
Claim 5
Dependent Claim
32 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising a gallotannin.
Claim 6
Dependent Claim
32 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising a gallotannin.
Claim 7
Dependent Claim
32 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising an ellagitannin.
Claim 8
Dependent Claim
32 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising an ellagitannin.
Claim 9
Dependent Claim
12 words
A composition according to claim 4, wherein said tannin comprises digallic acid.
Claim 10
Dependent Claim
15 words
A composition according to claim 3, wherein said tannin comprises a pentadigalloylglucoside or a pentagalloylglucoside.
Claim 11
Dependent Claim
12 words
A composition according to claim 3, wherein said tannin comprises tannic acid.
Claim 12
Dependent Claim
33 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising a condensed tannin.
Claim 13
Dependent Claim
33 words
A cyanoacrylate adhesive composition, comprising (a) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (b) an effective amount of tannin comprising a condensed tannin.
Claim 14
Dependent Claim
19 words
A composition according to claim 9, wherein said tannin comprises a condensation polymer of a flavan-3-ol or a flavan-3,4-diol.
Claim 15
Dependent Claim
13 words
A composition according to claim 9, wherein said tannin comprises a wine tannin.
Claim 16
Dependent Claim
31 words
A cyanoacrylate adhesive composition, comprising (a) cyanoacrylate monomer and (b) more than about 0.01 and less than about 5 weight percent of tannin, based on the weight of said cyanoacrylate monomer.
Claim 17
Dependent Claim
31 words
A cyanoacrylate adhesive composition, comprising (a) cyanoacrylate monomer and (b) more than about 0.01 and less than about 5 weight percent of tannin, based on the weight of said cyanoacrylate monomer.
Claim 18
Dependent Claim
12 words
A composition according to claim 12, wherein said tannin comprises tannic acid.
Claim 19
Dependent Claim
14 words
A composition according to claim 12, comprising about 0.01 to 1 weight percent tannin.
Claim 20
Dependent Claim
14 words
A composition according to claim 12, comprising about 0.05 to 0.3 weight percent tannin.
Claim 21
Dependent Claim
23 words
A bonded article, comprising a layer of a composition according to claim 1 disposed between and in contact with two or more adherends.
Claim 22
Independent Claim
83 words
A method for bonding two adherends together, comprising the steps of: (a) applying to one or both of said adherends a layer or layers of a polymerizable cyanoacrylate adhesive composition comprising (i) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (ii) an effective amount of tannin, and (b) mating said adherends to one another so that said layer or layers of said adhesive composition are disposed therebetween, and allowing said adhesive composition to cure.
Claim 23
Independent Claim
83 words
A method for bonding two adherends together, comprising the steps of: (a) applying to one or both of said adherends a layer or layers of a polymerizable cyanoacrylate adhesive composition comprising (i) ten weight percent or more of cyanoacrylate monomer, based on the weight of said adhesive composition, and (ii) an effective amount of tannin, and (b) mating said adherends to one another so that said layer or layers of said adhesive composition are disposed therebetween, and allowing said adhesive composition to cure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |