Patent US4113540A successfully refreshed from Google Patents.
US4113540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of multifunctional monomers in the preparations of emulsions to be used in adhesives
Assignee: Shell USA Inc
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Filing: 1977-12-02
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Granted: 1978-09-12
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Expires: 1997-12-02
Abstract
Abstract This invention relates to novel adhesive compositions and laminates produced therefrom, said adhesive comprising a vinyl acetate-acrylate or methacrylate emulsion polymer with a content of an ethylenically unsaturated acid ester of a polyol containing at least three hydroxyl groups, said ester should also include at least three unsaturated acid moieties.
Inventors
- 👤 Ralph F. Patella
- 👤 Edward J. Kuzma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:17
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A method of forming a laminate which comprises bonding at least two substrates with an adhesive composition comprising an emulsion polymer of vinyl acetate with from about 5% to about 50% by weight of alkyl acrylate or methacrylate based on the total weight of vinyl acetate and alkyl acrylate or methacrylate and from about 2% to about 10% by weight, based on the total weight of said polymer, of an acrylic or methacrylic acid ester of a polyol in which at least three hydroxyl groups are esterified.
Claim 2
Independent Claim
87 words
A method of forming a laminate which comprises bonding at least two substrates with an adhesive composition comprising an emulsion polymer of vinyl acetate with from about 5% to about 50% by weight of alkyl acrylate or methacrylate based on the total weight of vinyl acetate and alkyl acrylate or methacrylate and from about 2% to about 10% by weight, based on the total weight of said polymer, of an acrylic or methacrylic acid ester of a polyol in which at least three hydroxyl groups are esterified.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein said polyol is trimethylolpropane.
Claim 4
Dependent Claim
10 words
The method of claim 1 wherein said polyol is pentaerythritol.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said polyol ester is trimethylolpropane triacrylate.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein said polyol ester is pentaerythritol triacrylate.
References Cited (Backward Citations)
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Cited
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US3637563A
Cited
US3755237A
Cited
US3925289A
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US4056503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |