Patent US3926879A successfully refreshed from Google Patents.
US3926879A
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Aqueous sealant compositions
Assignee: M&T Chemicals Inc
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Filing: 1974-04-01
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Granted: 1975-12-16
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Expires: 1994-04-01
Abstract
Abstract Aqueous sealant compositions wherein the thickening agent is a polymer containing repeating units derived from the ammonium salt of acrylic or methacrylic acid adhere well to coated metal substrates. Following evaporation of the aqueous phase the sealant exhibits a unique ability to swell when in contact with the liquid contents of a closed container, thereby ensuring that an impervious seal will be maintained at the seams of the container.
Inventors
- 👤 Walter A Fourier
- 👤 Daniel J Dickmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:47
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L21/00; C08L21/02; C08L33/00; C08L33/02; C09K2200/00; C09K2200/02; C09K2200/0204; C09K2200/0208; C09K2200/0239; C09K2200/0243; C09K2200/0247; C09K2200/06; C09K2200/0607; C09K2200/0615; C09K2200/0617; C09K2200/0625; C09K2200/0687
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
IN AN IMPROVED SEALANT COMPOSITION FOR METAL CONTAINERS, SAID COMPOSITION CONSISTING ESSENTIALLY OF AQUEOUS DISPERSION COMPRISING 100 PARTS BY WEIGHT OF A DISPERSED ELASTOMERIC POLYMER SELECTED FROO THE GROUP CONSISTING OF NATURAL RUBBERS AND SYNTHETIC RUBBERS, BETWEEN 30 AND 75 PARTS OF A TACKIFYING RESIN, BETWEEN 5 AND 20 PARTS OF A THICKENER, AND BETWEEN 30 AND 100 PARTS OF A FILLER SELECTED FROM THE GROUP CONSISTING OF HYDRATED ALUMINA, SILICA, AND ZINC OXIDE, WHEREIN THE CONCENTRATION OF DISSOLVED AND DISPERSED SOLIDS IN THE SEALANT COMPOSITION CONSITUTES BETWEEN 35 AND 70 PERCENT BY WEIGHT OF SAID COMPOSITION, THE IIMPROVEMENTT WHICH RESIDES IN SEALECTING THE THICKENER FROM THE GROUP CONSISTING OF COPOLYMERS WHEREIN BETWEEN 25 AND 60 PERCENT BY WEIGHT OF THE REPEATING UNITS ARE DERIVED FROM THE AMMONIUM SALT OF ACRYLIC OR METHACRYLIC ACID, ANY REMAINING REPEATING UNITS BEING DERIVED FROM ESTERS OF ACRYLIC ACID OR METHACRYLIC ACID WITH ALCOHOLS CONTAINING BETWEEN 1 AND 20 CARBON ATOMS.
Claim 2
Dependent Claim
157 words
IN AN IMPROVED SEALANT COMPOSITION FOR METAL CONTAINERS, SAID COMPOSITION CONSISTING ESSENTIALLY OF AQUEOUS DISPERSION COMPRISING 100 PARTS BY WEIGHT OF A DISPERSED ELASTOMERIC POLYMER SELECTED FROO THE GROUP CONSISTING OF NATURAL RUBBERS AND SYNTHETIC RUBBERS, BETWEEN 30 AND 75 PARTS OF A TACKIFYING RESIN, BETWEEN 5 AND 20 PARTS OF A THICKENER, AND BETWEEN 30 AND 100 PARTS OF A FILLER SELECTED FROM THE GROUP CONSISTING OF HYDRATED ALUMINA, SILICA, AND ZINC OXIDE, WHEREIN THE CONCENTRATION OF DISSOLVED AND DISPERSED SOLIDS IN THE SEALANT COMPOSITION CONSITUTES BETWEEN 35 AND 70 PERCENT BY WEIGHT OF SAID COMPOSITION, THE IIMPROVEMENTT WHICH RESIDES IN SEALECTING THE THICKENER FROM THE GROUP CONSISTING OF COPOLYMERS WHEREIN BETWEEN 25 AND 60 PERCENT BY WEIGHT OF THE REPEATING UNITS ARE DERIVED FROM THE AMMONIUM SALT OF ACRYLIC OR METHACRYLIC ACID, ANY REMAINING REPEATING UNITS BEING DERIVED FROM ESTERS OF ACRYLIC ACID OR METHACRYLIC ACID WITH ALCOHOLS CONTAINING BETWEEN 1 AND 20 CARBON ATOMS.
Claim 3
Dependent Claim
20 words
An improved sealant composition as described in claim 1 wherein the elastomeric polymer is a copolymer of isobutylene and isoprene.
Claim 4
Dependent Claim
15 words
An improved sealant composition as described in claim 1 wherein the filler is hydrated alumina.
Claim 5
Dependent Claim
21 words
An improved sealant composition as described in claim 1 wherein the tackifying resin is a salt or ester of rosin acids.
Claim 6
Dependent Claim
16 words
An improved sealant composition as described in claim 1 wherein said ammonium salt is ammonium acrylate.
Claim 7
Dependent Claim
24 words
An improved sealant composition as described in claim 5 wherein repeating units derived from ammonium acrylate constitute 27 percent by weight of the thickener.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |