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Patent US4374969A successfully refreshed from Google Patents.
US4374969A
Expired / Lapsed
US
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Addition polymerizable isocyanate-polyamine anaerobic adhesives
Assignee: Dow Chemical Co
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Filing: 1982-04-02
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Granted: 1983-02-22
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Expires: 2002-04-02
Abstract
Abstract The reaction product of an ethylenically unsaturated, monofunctional isocyanate, such as isocyanatoethyl methacrylate and a polyamine, is useful as an anaerobic adhesive.
Inventors
- 👤 Kurt C. Frisch, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
43 words
An adhesive comprising: (a) the reaction product of: (1) an addition polymerizable ethylenically unsaturated isocyanate and (2) a polyamine, wherein the reaction between the polyamine and the isocyanate has been carried out in the absence of a catalyst; and (b) a polymerization initiator.
Claim 2
Dependent Claim
43 words
An adhesive comprising: (a) the reaction product of: (1) an addition polymerizable ethylenically unsaturated isocyanate and (2) a polyamine, wherein the reaction between the polyamine and the isocyanate has been carried out in the absence of a catalyst; and (b) a polymerization initiator.
Claim 3
Dependent Claim
45 words
The adhesive of claim 1 wherein the ethylenically unsaturated isocyanate has the formula: ##STR3## wherein R 1 is a hydrogen or a carbon chain of from 1 to 5 carbon atoms and R 2 is a carbon chain of from 1 to 7 carbon atoms.
Claim 4
Dependent Claim
16 words
The adhesive of claim 2 wherein the ethylenically unsaturated isocyanate is 2-isocyanatoethyl methacrylate or 2-isocyanatoethyl acrylate.
Claim 5
Dependent Claim
16 words
The adhesive of claim 1, 2 or 3 wherein the polymerization initiator is a free-radical initiator.
Claim 6
Dependent Claim
13 words
The adhesive of claim 4 wherein the polymerization initiator is a peroxygen compound.
Claim 7
Dependent Claim
15 words
The adhesive of claim 4 wherein the polymerization initiator is an organic peroxide or hydroperoxide.
Claim 8
Independent Claim
61 words
A method of bonding substrates at a bond site comprising placing: (a) the reaction product of: (1) an addition polymerizable ethylenically unsaturated isocyanate and (2) a polyamine, wherein the reaction between the polyamine and the isocyanate has been carried out in the absence of a catalyst; and (b) a polymerization initiator; at the bond site so as to form a bond.
Claim 9
Independent Claim
61 words
A method of bonding substrates at a bond site comprising placing: (a) the reaction product of: (1) an addition polymerizable ethylenically unsaturated isocyanate and (2) a polyamine, wherein the reaction between the polyamine and the isocyanate has been carried out in the absence of a catalyst; and (b) a polymerization initiator; at the bond site so as to form a bond.
Claim 10
Dependent Claim
45 words
The method of claim 7 wherein the ethylenically unsaturated isocyanate has the formula: ##STR4## wherein R 1 is a hydrogen or a carbon chain of from 1 to 5 carbon atoms and R 2 is a carbon chain of from 1 to 7 carbon atoms.
Claim 11
Dependent Claim
16 words
The method of claim 2 wherein the ethylenically unsaturated isocyanate is 2-isocyanatoethyl methacrylate or 2-isocyanatoethyl acrylate.
Claim 12
Dependent Claim
19 words
The method of claim 7, 8 or 9 including the additional step of removing oxygen from the bond site.
Claim 13
Dependent Claim
19 words
The method of claim 7, 8 or 9 including the additional step of applying pressure to the bond site.
Claim 14
Dependent Claim
13 words
The adhesive of claim 1, 2 or 3 additionally comprising (c) an inhibitor.
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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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |