US4034145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaerobically hardening adhesives and sealants containing an organic percarboxylic acids
Assignee: Henkel AG and Co KGaA
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Filing: 1975-08-25
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Granted: 1977-07-05
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Expires: 1995-08-25
Abstract
Abstract Organic percarboxylic acids are stabilizers for anaerobically-setting adhesive compositions wherein the principal adhesive component is a (meth) acrylic acid ester and the catalyst is an organic peroxide. The percarboxylic acid improves the storage-stability of the adhesives in contact with air.
Inventors
- 👤 Werner Gruber
- 👤 Joachim Galinke
- 👤 Jurgen Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C09; C09J; C09J4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
In an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component, a peroxide polymerization catalyst therefor and an organic polymerization accelerator: a small but effective uniformly distributed amount of a compound selected from the group consisting of the aliphatic and aromatic percarboxylic acids homogeneously dispersible in said composition as agent improving the storage stability of said composition in the presence of molecular oxygen.
Claim 2
Dependent Claim
69 words
In an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component, a peroxide polymerization catalyst therefor and an organic polymerization accelerator: a small but effective uniformly distributed amount of a compound selected from the group consisting of the aliphatic and aromatic percarboxylic acids homogeneously dispersible in said composition as agent improving the storage stability of said composition in the presence of molecular oxygen.
Claim 3
Dependent Claim
12 words
A composition according to claim 1 wherein the stabilizer is peracetic acid.
Claim 4
Dependent Claim
13 words
A composition according to claim 1 wherein the accelerator is a tertiary amine.
Claim 5
Dependent Claim
11 words
A composition according to claim 3 wherein the accelerator is N,N-dimethyl-p-toluidine.
Claim 6
Dependent Claim
12 words
A composition according to claim 1 wherein the catalyst is cumene hydroperoxide.
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
24 words
A composition according to claim 1 wherein the agent improving the storage stability of the composition is a percarboxylic acid which is soluble therein.
Claim 9
Dependent Claim
26 words
A composition according to claim 1 wherein the percarboxylic acid in an an alkyl percarboxylic acid containing 2 to 8 carbon atoms in the alkyl radical.
Claim 10
Independent Claim
80 words
A method for improving the storage-stability of an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component, a peroxide polymerization catalyst therefor, and an organic polymerization accelerator, which comprises uniformly incorporating in said composition a small, but effective amount of a compound selected from the group consisting of the aliphatic and aromatic percarboxylic acids homogeneously dispersible in said composition as agent improving the storage stability of said composition in the presence of molecular oxygen.
Claim 11
Independent Claim
80 words
A method for improving the storage-stability of an aerostable, anaerobically-setting adhesive composition comprising a polymerizable (meth) acrylate ester as principal latent adhesive component, a peroxide polymerization catalyst therefor, and an organic polymerization accelerator, which comprises uniformly incorporating in said composition a small, but effective amount of a compound selected from the group consisting of the aliphatic and aromatic percarboxylic acids homogeneously dispersible in said composition as agent improving the storage stability of said composition in the presence of molecular oxygen.
Claim 12
Dependent Claim
21 words
A method according to claim 9 wherein said percarboxylic acid is incorporated in said composition after said catalyst and said accelerator.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |