US3903055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for initiating polymerization of cyanoacrylate monomers and comonomer blends thereof to give reproducible and predetermined gel/transition time characteristics
Assignee: Johnson and Johnson
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Filing: 1973-12-05
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Granted: 1975-09-02
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Expires: 1993-12-05
Abstract
Abstract A method is disclosed for initiating the polymerization of small amounts of relatively sensitive liquid monomer compositions, comprising esters of cyanoacrylic acid, by means of a polymerization catalyzing particle adapted to be added to the monomer composition and then separated from the same prior to gelation of the monomer. The catalyzing particle may be in the form of a discrete particle such as beads, chips, or the like, or in the form of a rod sufficiently long so that the same can be used to simultaneously stir and activate the monomer.
Inventors
- 👤 Carl J Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/30; A; A61; A61K; A61K6/00; A61K6/30; A61K6/60; A61K6/61; A61K6/80; A61K6/884; A61K6/887; C08F122/00; C08F122/30; C08F122/32; C08F22/32; C09; C09D; C09D4/00; C09J; C09J4/00; C09J5/00; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
THE METHOD FOR THE CONTROLLED ANIONIC POLYMERIZATION OF A LIQUID CYANOACRYLATE MONOMER WITHIN A PREDICTABLE TIME INTERVAL FOLLOWING INITIAL CONTACT OF THE MONOMER WITH A POLYMERIZATION CATALYST FOR THE SAME, COMPRISING ADMIXING A CATALYZING PARTICLE WITH SAID MONOMER, AND THEN SEPARATING SAID CATALYZING PARTICLE FROM SAID MONOMER PRIOR TO THE GELATION OF SAID MONOMER, SAID CATALYZING PARTICLE COMPRISING A SURFACE POROUS CARRIER IMPREGNATED WITH AN AMINE CATALYST HAVING A PKB VALUEOF 9.2 TO 6.0, OF THE GROUP CONSISTING OF SECONDARY AND TERTIARY ANILINE DERIVATIVES WHEREBY GELATION OF SAID MONOMER FOLLOWED BY POLYMERIZATION OF THE SAME TO A HARD MASS OCCURS WITHIN A PREDICTED TIME PERIOD, THUS PROVIDING A KNOWN PERIOD DURING WHICH THE CATALYZED, BUT FLUID, MONOMER CAN BE APPLIED TO WORKING SURFACES PRIOR TO POLYMERIZATION.
Claim 2
Independent Claim
126 words
THE METHOD FOR THE CONTROLLED ANIONIC POLYMERIZATION OF A LIQUID CYANOACRYLATE MONOMER WITHIN A PREDICTABLE TIME INTERVAL FOLLOWING INITIAL CONTACT OF THE MONOMER WITH A POLYMERIZATION CATALYST FOR THE SAME, COMPRISING ADMIXING A CATALYZING PARTICLE WITH SAID MONOMER, AND THEN SEPARATING SAID CATALYZING PARTICLE FROM SAID MONOMER PRIOR TO THE GELATION OF SAID MONOMER, SAID CATALYZING PARTICLE COMPRISING A SURFACE POROUS CARRIER IMPREGNATED WITH AN AMINE CATALYST HAVING A PKB VALUEOF 9.2 TO 6.0, OF THE GROUP CONSISTING OF SECONDARY AND TERTIARY ANILINE DERIVATIVES WHEREBY GELATION OF SAID MONOMER FOLLOWED BY POLYMERIZATION OF THE SAME TO A HARD MASS OCCURS WITHIN A PREDICTED TIME PERIOD, THUS PROVIDING A KNOWN PERIOD DURING WHICH THE CATALYZED, BUT FLUID, MONOMER CAN BE APPLIED TO WORKING SURFACES PRIOR TO POLYMERIZATION.
Claim 3
Dependent Claim
31 words
A method according to claim 1 wherein the amine catalyst is selected from the group consisting of N-alkyl and N,N-dialkyl-substituted anilines and wherein the alkyl group contains 1 to 4 carbons.
Claim 4
Dependent Claim
30 words
A method of claim 2 wherein the amine is seLected from the group consisting of N,N-dimethylaniline, N,N,2,4-tetramethylaniline, N,N,3,5-tetramethylaniline, N,N-dimethyl-o-toluidine, N,N-dimethyl-m-toluidine, and N,N-dimethyl-p-toluidine, N-methyl-N-phenylbenzylamine, and their corresponding N-ethyl and N,N-diethyl derivatives.
Claim 5
Dependent Claim
11 words
A method of claim 3 in which the amine is N,N-dimethyl-p-toluidine.
Claim 6
Dependent Claim
26 words
A method of claim 1 wherein the monomer is a 2-cyanoacrylate ester selected from the group consisting of phenyl, cyclohexyl, and C1 to C16 alkyl esters.
Claim 7
Dependent Claim
26 words
A method according to claim 3 in which the porous carrier is a molecular sieve bead having a particle size of about 4 to 16 mesh.
Claim 8
Dependent Claim
27 words
A method according to claim 3 in which the porous carrier is in the form of a rod having a diameter of about 0.2 to 0.04 inches.
Claim 9
Dependent Claim
31 words
The method of claim 1 wherein after separation of said catalyzing particle and prior to gelation said monomer is coated on a surface and polymerizes while in contact with said surface.
Claim 10
Dependent Claim
55 words
The method of claim 1 wherein after separation of said catalyzing particle and prior to gelation of said monomer said monomer is placed on two separate surfaced so as to wet the same with said monomer and said two wetted surfaces are brought and held together while said monomer wetting said surfaces gels and polymerizes.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |