US4374940A
Expired / Lapsed
US
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Anaerobic compositions
Assignee: Henkel Corp
•
Filing: 1981-06-16
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Granted: 1983-02-22
•
Expires: 2001-06-16
Abstract
Abstract Anaerobic compositions are disclosed which employ meta-toluidine compounds as activators.
Inventors
- 👤 Yog R. Bhatia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
An anaerobic curing composition comprising a compound capable of curing under anaerobic conditions, the improvement thereon comprising including in the composition a member selected from the group consisting of a meta-dialkyl substituted toluidine wherein the alkyl groups are selected from the group consisting of ethyl, n-propyl, isopropyl, n-butyl, 1-methyl propyl and 2-methyl propyl and mixtures thereof said composition being substantially free of a stabilizing inhibitor said inhibitor being present at not more than 300 ppm based on the total weight of the composition, wherein the inhibitor has an oxidation-reduction potential of 0.6 volt or less.
Claim 2
Dependent Claim
95 words
An anaerobic curing composition comprising a compound capable of curing under anaerobic conditions, the improvement thereon comprising including in the composition a member selected from the group consisting of a meta-dialkyl substituted toluidine wherein the alkyl groups are selected from the group consisting of ethyl, n-propyl, isopropyl, n-butyl, 1-methyl propyl and 2-methyl propyl and mixtures thereof said composition being substantially free of a stabilizing inhibitor said inhibitor being present at not more than 300 ppm based on the total weight of the composition, wherein the inhibitor has an oxidation-reduction potential of 0.6 volt or less.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the meta-dialkyl substituted toluidine is present at from about 0.01 percent to about 5 percent by weight.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein the meta-dialkyl substituted toluidine compound has both alkyl substituents identical.
Claim 5
Dependent Claim
19 words
The composition of claim 1 containing from about 0.1 to about 10 percent by weight of a sulfimide accelerator.
Claim 6
Dependent Claim
25 words
The composition of claim 1 additionally containing from about 0.01 to about 1 percent by weight of a chelating agent capable of complexing iron ions.
Claim 7
Dependent Claim
14 words
The composition of claim 3 wherein the meta-dialkyl substituted toluidine is the diethyl compound.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein the compound is present at from about 50 percent to about 99.5 percent by weight.
Claim 9
Dependent Claim
21 words
The composition of claim 1 containing as a free radical initiator cumene hydroperoxide from 0.1 percent to 10 percent by weight.
Claim 10
Dependent Claim
11 words
The composition of claim 4 wherein the sulfimide is benzoic sulfimide.
Claim 11
Dependent Claim
13 words
The composition of claim 1 wherein the compound is a polymerizable polyacrylate ester.
Claim 12
Dependent Claim
21 words
The composition of claim 1 containing as a free radical initiator a hydroperoxide at from 0.1 to 10 percent by weight.
Claim 13
Dependent Claim
17 words
The composition of claim 1 containing from about 0.5 percent to about 10 percent by weight silica.
References Cited (Backward Citations)
US2628178A
Cited
US2895950A
Cited
US3041322A
Cited
US3043820A
Cited
US3218305A
Cited
US3987234A
Cited
US4038475A
Cited
US4180640A
Cited
US4245077A
Cited
US4215209A
Cited
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 |