US3985943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaerobically hardening adhesives and sealants containing organic disulfonamides
Assignee: Henkel AG and Co KGaA
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Filing: 1975-08-25
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Granted: 1976-10-12
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Expires: 1995-08-25
Abstract
Abstract Organic disulfonamides are accelerators for aerostable, anaerobically-setting adhesive compositions. They provide rapid setting of the adhesive with formation of bonds of good strength, and have little adverse effect upon the storage stability of the compositions when access of molecular oxygen is permitted.
Inventors
- 👤 Werner Gruber
- 👤 Joachim Galinke
- 👤 Jurgen Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:17
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
65 words
In an aerostable, anaerobically setting adhesive composition containing a polymerizable (meth) acrylate ester as principal latent adhesive component and a hydroperoxide polymerization catalyst therefor derived from hydrocarbons having a C 3 -C 18 chain length: a small but effective uniformly distributed amount in the range of 0.1 to 21% based on the weight of said composition of an organic disulfonamide as accelerator for said catalyst.
Claim 2
Dependent Claim
65 words
In an aerostable, anaerobically setting adhesive composition containing a polymerizable (meth) acrylate ester as principal latent adhesive component and a hydroperoxide polymerization catalyst therefor derived from hydrocarbons having a C 3 -C 18 chain length: a small but effective uniformly distributed amount in the range of 0.1 to 21% based on the weight of said composition of an organic disulfonamide as accelerator for said catalyst.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein the accelerator is a diaromatic sulfonamide.
Claim 4
Dependent Claim
11 words
A composition according to claim 2 wherein the accelerator is di-p-tosylsulfonamide.
Claim 5
Dependent Claim
13 words
A composition according to claim 1 containing an organic amine as auxiliary accelerator.
Claim 6
Dependent Claim
12 words
A composition according to claim 1 wherein the auxiliary accelerator is N,N-dimethyltoluidine.
Claim 7
Dependent Claim
26 words
A composition according to claim 1 wherein the (meth) acrylate ester is the ester of two mols of methacrylic acid with one mol of ethylene glycol.
Claim 8
Dependent Claim
13 words
A composition according to claim 1 wherein the polymerization catalyst is cumene hydroperoxide.
Claim 9
Dependent Claim
12 words
A composition according to claim 1 wherein the composition contains a stabilizer.
Claim 10
Dependent Claim
12 words
A composition according to claim 7 wherein the stabilizer is peracetic acid.
Claim 11
Dependent Claim
11 words
A composition according to claim 1 containing a free radical stabilizer.
Claim 12
Dependent Claim
13 words
A composition according to claim 10 wherein the free radical stabilizer is hydroquinone.
Claim 13
Independent Claim
76 words
A method for accelerating the setting rate of an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component and a hydroperoxide polymerization catalyst therefor derived from hydrocarbons having a C 3 -C 18 chain length, which comprises uniformly incorporating in said composition a small but effective amount in the range of 0.01 to 10% based on the weight of said ester of an organic disulfonamide as accelerator for said catalyst.
Claim 14
Independent Claim
76 words
A method for accelerating the setting rate of an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component and a hydroperoxide polymerization catalyst therefor derived from hydrocarbons having a C 3 -C 18 chain length, which comprises uniformly incorporating in said composition a small but effective amount in the range of 0.01 to 10% based on the weight of said ester of an organic disulfonamide as accelerator for said catalyst.
Claim 15
Dependent Claim
18 words
A method according to claim 12 wherein said disulfonamide is incorporated in said composition prior to said catalyst.
References Cited (Backward Citations)
US3625930A
Cited
US3775385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |