US4845151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic cyanoacrylate adhesive composition
Assignee: Illinois Tool Works Inc
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Filing: 1988-04-07
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Granted: 1989-07-04
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Expires: 2008-04-07
Abstract
Abstract Adhesive compositions having improved stability and surface insensitivity are made from a blend of (a) a 2-cyanoacrylate ester adhesive, (b) a polyoxyalkylene glycol, glycol ester, or glycol ether, and (c) fumed silica having no surface treatment.
Inventors
- 👤 George T. Sivy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:50
CPC Classifications
C; C09; C09J; C09J4/00; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/062; C09J4/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
An adhesive composition comprising: (a) a 2-cyanoacrylate ester; (b) an alkylene or a polyoxy alkylene glycol, an alkylene or a polyoxyalkylene glycol ether, or an alkylene or a polyoxy alkylene glycol ester wherein the polyalkylene group has a degree of polymerization of at least 2 and wherein the alkylene group is ethylene or propylene-1,2; and (c) fumed silica having no surface treatment, wherein (b) is present in the amount of about 0.05 to about three parts by weight based on 100 parts by weight of (a) and wherein (c) is present in the amount of about two to about ten parts by weight based on 100 parts by weight of (a).
Claim 2
Dependent Claim
111 words
An adhesive composition comprising: (a) a 2-cyanoacrylate ester; (b) an alkylene or a polyoxy alkylene glycol, an alkylene or a polyoxyalkylene glycol ether, or an alkylene or a polyoxy alkylene glycol ester wherein the polyalkylene group has a degree of polymerization of at least 2 and wherein the alkylene group is ethylene or propylene-1,2; and (c) fumed silica having no surface treatment, wherein (b) is present in the amount of about 0.05 to about three parts by weight based on 100 parts by weight of (a) and wherein (c) is present in the amount of about two to about ten parts by weight based on 100 parts by weight of (a).
Claim 3
Dependent Claim
52 words
The composition of claim 1 wherein (b) is present in the amount of about one to about two parts based on 100 parts by weight of (a) and wherein (c) is present in the amount of about three to about six parts by weight based on 100 parts by weight of (a).
Claim 4
Dependent Claim
55 words
The adhesive composition of claim 1 wherein (a) the 2-cyanoacrylate ester has the formula: ##STR2## wherein R is a straight chain or branched chain alkyl group having 1 to 12 carbon atoms, a straight chain or branched claim alkyl group having halogen or alkoxy substituents, a cycloalkyl group, an aralkyl group, or an aryl group.
Claim 5
Dependent Claim
19 words
The composition of claim 3 wherein the R group is an alkyl group having 1 to 4 carbon atoms.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein the alkyl group is ethyl.
Claim 7
Dependent Claim
22 words
The composition of claim 1 wherein the polyoxyalkylene glycol is polyethylene glycol having a molecular weight of about 106 to about 1000.
Claim 8
Dependent Claim
17 words
The composition of claim 6 wherein the upper molecular weight of the polyethylene glycol is about 600.
Claim 9
Dependent Claim
22 words
The composition of claim 1 wherein the polyoxyalklene glycol is poly(propylene-1,2) glycol having a molecular weight of about 130 to about 4000.
Claim 10
Dependent Claim
17 words
The composition of claim 8 wherein the upper molecular weight of the poly(propylene-1,2) glycol is about 2000.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |