Patent US3932335A successfully refreshed from Google Patents.
US3932335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition of vinyl ester polymer, polyvinyl alcohol, glyoxal, and a water miscible alcohol
Assignee: Reichhold Chemicals Inc
•
Filing: 1970-06-29
•
Granted: 1976-01-13
•
Expires: 1990-06-29
Abstract
Abstract A water-resistant adhesive composition consisting essentially of a vinyl ester polymer, a polyvinyl alcohol in an amount from about 2 to 10 percent by weight of the polymer, glyoxal in an amount from about 2 to 15 percent by weight of the polymer and a water-miscible alcohol in an amount from about 3.5 to 17.0 percent by weight of the polymer is provided. This composition in emulsion form has improved viscosity stability and coagulation resistance, and improved water resistance when applied as an adhesive.
Inventors
- 👤 Bert Sorelle Gorton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:10
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
An aqueous dispersion of a water-resistant adhesive composition consisting essentially of a homo- or copolymer of a vinyl ester of aliphatic monocarboxylic acid, polyvinyl alcohol in an amount from about 2 to 10 percent by weight of the polymer, glyoxal in an amount from about 2 to 15 percent by weight of the polymer and a water-miscible alcohol having 1-3 carbon atoms in an amount from about 3.5 to 17.0 percent by weight of the polymer.
Claim 2
Dependent Claim
76 words
An aqueous dispersion of a water-resistant adhesive composition consisting essentially of a homo- or copolymer of a vinyl ester of aliphatic monocarboxylic acid, polyvinyl alcohol in an amount from about 2 to 10 percent by weight of the polymer, glyoxal in an amount from about 2 to 15 percent by weight of the polymer and a water-miscible alcohol having 1-3 carbon atoms in an amount from about 3.5 to 17.0 percent by weight of the polymer.
Claim 3
Dependent Claim
13 words
The adhesive composition of claim 1 wherein the vinyl ester is vinyl acetate.
Claim 4
Dependent Claim
34 words
The adhesive composition of claim 2 wherein the vinyl acetate polymer is a copolymer containing 60 to 95 weight percent vinyl acetate and 40 to 5 weight percent of an ethylenically unsaturated copolymerizable monomer.
Claim 5
Dependent Claim
26 words
The adhesive composition of claim 3 wherein the ethylenically unsaturated copolymerizable monomer is ethylene and the polyvinyl alcohol is at least 88 percent hydrolyzed polyvinyl alcohol.
Claim 6
Dependent Claim
70 words
The adhesive composition of claim 4 wherein the polyvinyl alcohol is present in an amount from about 3 to 6 percent, the glyoxal is present in an amount from about 7 to 10 percent and the water-miscible alcohol is at least one alcohol selected from the group consisting of methanol, ethylene glycol, propylene glycol, ethanol, isopropanol and n-propanol and is present in an amount from about 7 to 10 percent.
Claim 7
Dependent Claim
12 words
The adhesive composition of claim 5 wherein the water-miscible alcohol is methanol.
Claim 8
Dependent Claim
92 words
An adhesive composition consisting essentially of an ethylene/vinyl acetate copolymer, said copolymer containing ethylene in an amount from about 40 to 5 percent by weight of the copolymer and vinyl acetate in an amount from about 60 to 95 percent by weight of the copolymer, polyvinyl alcohol in an amount from about 2 to 10 percent by weight of the copolymer, glyoxal in an amount from about 2 to 15 percent by weight of the copolymer and methanol in an amount from about 3.5 to 17.0 percent by weight of the copolymer.
Claim 9
Dependent Claim
92 words
An adhesive composition consisting essentially of an ethylene/vinyl acetate copolymer, said copolymer containing ethylene in an amount from about 40 to 5 percent by weight of the copolymer and vinyl acetate in an amount from about 60 to 95 percent by weight of the copolymer, polyvinyl alcohol in an amount from about 2 to 10 percent by weight of the copolymer, glyoxal in an amount from about 2 to 15 percent by weight of the copolymer and methanol in an amount from about 3.5 to 17.0 percent by weight of the copolymer.
Claim 10
Dependent Claim
48 words
The adhesive composition of claim 7 wherein the polyvinyl alcohol is present in an amount from about 3 to 6 percent, the glyoxal is present in an amount from about 7 to 10 percent and the methanol is present in an amount from about 7 to 10 percent.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |