Patent US4424327A successfully refreshed from Google Patents.
US4424327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoacrylate adhesive composition
Assignee: Henkel Teroson GmbH
•
Filing: 1981-03-10
•
Granted: 1984-01-03
•
Expires: 2001-03-10
Abstract
Abstract A rapid setting α-cyanoacrylate based adhesive composition having an improved polymerization catalyst therein. The polymerization catalyst is composed of at least one 2 arm pod and compound of the general formula ##STR1##
Inventors
- 👤 Karl Reich
- 👤 Heinz Tomaschek
- 👤 Georg Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:19
CPC Classifications
C; C09; C09J; C09J4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
An α-cyanoacrylate based adhesive composition having a catalytic amount of polymerization catalyst therein; said polymerization catalyst comprises at least one two-armed podand compound of the general formula: ##STR34## in which X represents an oxygen atom, a sulphur atom or a N--CH 3 group; Y represents an oxygen atom, a sulphur atom, a N--CH 3 group or a --N--; each B represents a hydrocarbon group free of hydroxy or amino groups which is separately selected from a C 1 -C 4 alkyl, an unsubstituted aryl, a C 1 -C 4 substituted aryl, or a hetero atom stubstituted aryl; A represents a central group capable of linking each X to the other by one or two atoms; and n and m are each integers.
Claim 2
Dependent Claim
122 words
An α-cyanoacrylate based adhesive composition having a catalytic amount of polymerization catalyst therein; said polymerization catalyst comprises at least one two-armed podand compound of the general formula: ##STR34## in which X represents an oxygen atom, a sulphur atom or a N--CH 3 group; Y represents an oxygen atom, a sulphur atom, a N--CH 3 group or a --N--; each B represents a hydrocarbon group free of hydroxy or amino groups which is separately selected from a C 1 -C 4 alkyl, an unsubstituted aryl, a C 1 -C 4 substituted aryl, or a hetero atom stubstituted aryl; A represents a central group capable of linking each X to the other by one or two atoms; and n and m are each integers.
Claim 3
Dependent Claim
36 words
The adhesive composition of claim 1 wherein the catalyst therein is at least one two-armed podand compound having each podand chain linking an X to a Y group in the form of a polyalkylene glycol chain.
Claim 4
Dependent Claim
37 words
The adhesive composition of claim 1 wherein the catalyst therein is at least one two arm podand compound having each podand chain linking an X to a Y group in the form of a polyethylene glycol chain.
Claim 5
Dependent Claim
33 words
The adhesive composition of claim 1 wherein the catalyst therein has a divalent central group, A, selected from --CH 2 --, --CH 2 CH 2 --, arylene, carbonyl, dicarbonyl, sulphonyl or phosphonyl group.
Claim 6
Dependent Claim
27 words
The adhesive compositon of claim 1 wherein the catalyst therein has each podand chain length defined by the formula Z=n+m+4 wherein Z is between 5 and 100.
Claim 7
Dependent Claim
57 words
The adhesive composition of claim 1 wherein the catalyst therein is a two armed podand compound such that when Y is oxygen or sulphur, each B is independently selected from C 1 -C 4 alkyl, phenyl, 1-naphthyl, 2-naphthyl, 2-methoxyphenyl, 2-nitrophenyl, 2-cyanophenyl or 2-methoxycarbonylphenyl groups and when Y=--N-- each terminal B group associated therewith is a phthaloyl group.
Claim 8
Dependent Claim
27 words
The adhesive composition of claim 1 wherein said composition contains 0.01 to 10% by weight of 2-armed podands based on the total weight of said adhesive composition.
Claim 9
Dependent Claim
63 words
The adhesive composition of claim 1 wherein the polymerization catalyst therein is at least one two-arm podand compound such that each chain is a polyethylene glycol chain; n and m each independently is an integer of from 2 to 50; A is selected from --CH 2 --, --CH 2 CH 2 --, arylene, ##STR35## and when Y is selected from oxygen or sulfur.
Claim 10
Dependent Claim
64 words
The adhesive composition of claim 1, 2, 3, 4, 5, 6, 7 or 8 α-cyanoacrylate is of the general formula ##STR36## in which R is a straight or branched-chain alkyl which can be substituted with a halogen atom or an alkoxy group, a straight or branched-chain alkenyl group, a straight or branched-chain alkinyl group, a cycloalky group, an aryl group or an aralkyl group.
References Cited (Backward Citations)
US2327080A
Cited
US3652635A
Cited
US3922449A
Cited
US4007077A
Cited
US4069378A
Cited
US4170585A
Cited
SU744018A1
Cited
US4139693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |