Patent US3906135A successfully refreshed from Google Patents.
US3906135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water resistant adhesive
Assignee: Air Products and Chemicals Inc
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Filing: 1971-05-28
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Granted: 1975-09-16
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Expires: 1991-05-28
Abstract
Abstract An adhesive composition that, when cured, provides a bond having excellent water resistance, comprising an aqueous emulsion of (A) a mixture of (i) an addition polymer of about 50 to 100 weight percent vinyl acetate and a balance, if any, consisting essentially of one or more of dibutyl maleate, dibutyl fumarate ethylene, butyl acrylate, and 2-ethylhexylacrylate and (ii) polyvinyl alcohol, (B) a monocarboxylic acid which can esterify polyvinyl alcohol, e.g. benzoic acid, and (C) water.
Inventors
- 👤 Lawrence Krutzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:30
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L31/00; C08L31/02; C08L31/04; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/28; C08L29/00; C08L29/02; C08L29/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3667; Y10T442/3675
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
140 words
AN ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF A. AN AQUEOUS VINYL ACETATE-ETHYLENE COPOLYMER EMULSION CONTAINING POLYVINYL ALCOHOL WHEREIN THE COPOLYMER IS AN INTERPOLYMER OF ADDITIVELY COMBINED UNITS OF VINYL ACETATE AND ETHYLENE CONTAINING ABOUT 20 TO 50 WEIGHT PERCENT OF POLYMERIZED ETHYLENE AND A BALANCE CONSISTING ESSENTIALLY OF POLYMERIZED VINYL ACETATE, B. FROM ABOUT 0.5 TO 3.5 MOLS OF A MONOCARBOXYLIC ACID PER MOLAR EQUIVALENT OF POLYMERIZED VINYL ALCOHOL IN THE EMULSION THE MONOCARBOXYLIC ACID BEING SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF ALKANOIC ACIDS AND MONOCYCLIC AROMATIC ACIDS EACH HAVING UP TO 10 CARBON ATOMS, C. FROM ABOUT 35 TO 70 PERCENT BASED ON THE WEIGHT OF THE EMULSION OF WATER AND D. AN ACIDIC CURING CATALYST OTHER THAN THE MONOCARBOXYLIC ACID OF (B) IN AN AMOUNT SUFFICIENT TO PROVIDE THE COMPOSITION WITH A PH OF ABOUT 1.5 TO 4.0.
Claim 2
Dependent Claim
140 words
AN ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF A. AN AQUEOUS VINYL ACETATE-ETHYLENE COPOLYMER EMULSION CONTAINING POLYVINYL ALCOHOL WHEREIN THE COPOLYMER IS AN INTERPOLYMER OF ADDITIVELY COMBINED UNITS OF VINYL ACETATE AND ETHYLENE CONTAINING ABOUT 20 TO 50 WEIGHT PERCENT OF POLYMERIZED ETHYLENE AND A BALANCE CONSISTING ESSENTIALLY OF POLYMERIZED VINYL ACETATE, B. FROM ABOUT 0.5 TO 3.5 MOLS OF A MONOCARBOXYLIC ACID PER MOLAR EQUIVALENT OF POLYMERIZED VINYL ALCOHOL IN THE EMULSION THE MONOCARBOXYLIC ACID BEING SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF ALKANOIC ACIDS AND MONOCYCLIC AROMATIC ACIDS EACH HAVING UP TO 10 CARBON ATOMS, C. FROM ABOUT 35 TO 70 PERCENT BASED ON THE WEIGHT OF THE EMULSION OF WATER AND D. AN ACIDIC CURING CATALYST OTHER THAN THE MONOCARBOXYLIC ACID OF (B) IN AN AMOUNT SUFFICIENT TO PROVIDE THE COMPOSITION WITH A PH OF ABOUT 1.5 TO 4.0.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the monocarboxylic acid is selected from the group consisting of benzoic, ortho-toluic, formic, acetic, and propionic acids.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein the interpolymer has a benzene-insolubles content of about 20 to 60 weight percent.
Claim 5
Dependent Claim
32 words
The composition of claim 1 wherein the polyvinyl alcohol is present in an amount of about 2 to 8 percent, based on the combined weight of the interpolymer and the polyvinyl alcohol.
Claim 6
Dependent Claim
23 words
The composition of claim 4 wherein the polyvinyl alcohol contains an average of about 0.75 to 1.0 hydroxyl group per polymerized monomer unit.
Claim 7
Dependent Claim
18 words
The composition of claim 5 wherein the polyvinyl alcohol has a molecular weight of about 20,000 to 750,000.
Claim 8
Dependent Claim
12 words
The composition of claim 2 wherein the monocarboxylic acid is benzoic acid.
Claim 9
Dependent Claim
16 words
The composition of claim 1 wherein the curing catalyst is phosphoric acid or para-toluene sulfonic acid.
Claim 10
Dependent Claim
21 words
A laminate comprising at least two superposed layers of solid mateRial bonded together by the cured adhesive composition of claim 1.
Claim 11
Dependent Claim
12 words
The laminate of claim 9 wherein at least one layer is cloth.
Claim 12
Dependent Claim
15 words
The laminate of claim 9 wherein at least one layer is unsupported polyvinyl chloride film.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |