US4340708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaerobically hardening adhesives and sealing compounds
Assignee: Henkel AG and Co KGaA
•
Filing: 1980-12-22
•
Granted: 1982-07-20
•
Expires: 2000-12-22
Abstract
Abstract The present invention is directed to anaerobically hardening adhesives, sealing compounds, and the like. More particularly, the present invention is directed to an anaerobically hardening adhesive and sealing composition comprising methacrylic or acrylic acid esters, organic peroxides, nitrogen containing compounds as accelerators for polymerization, and customary adjuvant substances, wherein a content of cyanoacetic acid or an ester or an amide thereof is also present.
Inventors
- 👤 Werner Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
An anaerobically hardening adhesive and sealing composition comprising methacrylic or acrylic acid esters, organic peroxides, nitrogen containing compounds as accelerators for polymerization, and customary adjuvant substances, wherein from about 0.01 to 10 percent by weight, based upon the weight of the methacrylic or acrylic acid esters, of a compound selected from the group consisting of cyanoacetic acid, an ester of cyanoacetic acid where the alcohol component of the ester consists of an aliphatic or aromatic radical optionally containing electronegative substituents and having from about 1 to 20 carbon atoms, and an amide of cyanoacetic acid where the amide group consists of at least one aliphatic radical which can be interrupted by one or more hetero-atoms and/or forms a ring with the amide nitrogen, and has from about 1 to 18 carbon atoms, is also present.
Claim 2
Dependent Claim
135 words
An anaerobically hardening adhesive and sealing composition comprising methacrylic or acrylic acid esters, organic peroxides, nitrogen containing compounds as accelerators for polymerization, and customary adjuvant substances, wherein from about 0.01 to 10 percent by weight, based upon the weight of the methacrylic or acrylic acid esters, of a compound selected from the group consisting of cyanoacetic acid, an ester of cyanoacetic acid where the alcohol component of the ester consists of an aliphatic or aromatic radical optionally containing electronegative substituents and having from about 1 to 20 carbon atoms, and an amide of cyanoacetic acid where the amide group consists of at least one aliphatic radical which can be interrupted by one or more hetero-atoms and/or forms a ring with the amide nitrogen, and has from about 1 to 18 carbon atoms, is also present.
Claim 3
Dependent Claim
10 words
A composition of claim 1, wherein cyanoacetic acid is present.
Claim 4
Dependent Claim
42 words
A composition of claim 1, wherein an ester of cyanoacetic acid is present where the alcohol component of the ester consists of an aliphatic or aromatic radical which can optionally contain electronegative substituents and has from about 1 to 20 carbon atoms.
Claim 5
Dependent Claim
11 words
A composition of claim 1, wherein cyanoacetic acid amide is present.
Claim 6
Dependent Claim
50 words
A composition of claim 1, wherein an amide of cyanoacetic acid is present where the amide group consists of at least one aliphatic radical which can be interrupted by one or more hetero-atoms and/or forms a ring with the amide nitrogen, and has from about 1 to 18 carbon atoms.
Claim 7
Dependent Claim
17 words
The composition of claim 5, wherein the aliphatic radical has from about 2 to 8 carbon atoms.
Claim 8
Dependent Claim
20 words
The composition of claim 5, wherein the amide has two aliphatic radicals of from about 1 to 18 carbon atoms.
Claim 9
Dependent Claim
28 words
The composition of claim 1, wherein the cyanoacetic acid or ester or amide thereof is present in an amount of from about 0.1 to 5 percent by weight.
Claim 10
Dependent Claim
16 words
The composition of claim 1, wherein an amount of organic amines is present as auxiliary accelerator.
Claim 11
Dependent Claim
63 words
The composition of claim 1, wherein the alcohol component is selected from the group consisting of methanol; butanol; cyclohexanol; decanol; or hexadecanol; unsubstituted or substituted by from 1 to 3 chlorine or bromine atoms; nitroethanol; the isomeric nitrobutenols; phenol; α-naphthol; β-naphthol; p-nitrophenol; o-chloro-p-nitrophenol; o,p-dinitrophenol; 2,4-dinitronaphthol; 4-naphthol sulfonic acid; 8-naphthol sulfonic acid; 6-naphthol β-sulfonic acid; 7-naphthol β-sulfonic acid; 8-naphthol β-sulfonic acid; and p-nitrobenzyl alcohol.
Claim 12
Dependent Claim
40 words
The composition of claim 1, wherein the amide is selected from the group consisting of cyanoacetic acid monomethylamide, cyanoacetic acid dimethylamide; cyanoacetic acid dimethylamide, cyanoacetic acid dibutylamide, cyanoacetic acid cyclohexylamide, cyanoacetic acid octylamide, cyanoacetic acid morpholite, and cyanoacetic acid pyrrolidide.
References Cited (Backward Citations)
US3525726A
Cited
US3984385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |