US3619346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl acetate adhesive
Assignee: Hexion Inc
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Filing: 1967-11-20
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Granted: 1971-11-09
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Expires: 1987-11-20
Abstract
Abstract This invention relates to vinyl acetate polymer adhesives which are room temperature curable under acidic conditions and more particularly to aqueous adhesives curable at room temperature comprising a vinyl acetate polymer, an N-hydroxymethyl reactive monomer copolymerizable with said polymer, an acidic curing agent, and a volatile curing inhibitor selected from the group consisting of substituted and unsubstituted C1-C5 aliphatic primary alcohols having a boiling point below about 150* C.
Inventors
- 👤 Stanley R Sandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:10
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/36; C08L2666/54; C08L61/00; C08L61/04; C08L61/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/31866; Y10T428/31877; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
The aqueous adhesive composition of claim 1, wherein the curing inhibitor is methanol.
Claim 2
Dependent Claim
22 words
The aqueous adhesive composition of claim 2, wherein the vinyl acetate polymer is the reaction product of vinyl acetate and acrylic acid.
Claim 3
Dependent Claim
18 words
The adhesive of claim 1, including 0-60 parts by weight of a phenol-formaldehyde resin cross-linkablE with said polymer.
Claim 4
Dependent Claim
52 words
The aqueous adhesive composition of claim 1, wherein the polymer is about 98 percent vinyl acetate and about 2 percent acrylic acid, and the curing inhibitor is methanol in the proportion of from about three to about 10 parts by weight for each 100 parts by weight of the aqueous adhesive composition.
Claim 5
Dependent Claim
20 words
A structure comprising at least two cellulosic surfaces bonded together by the adhesive of claim 3 in a cured condition.
Claim 6
Dependent Claim
21 words
A structure comprising at least two surfaces of wood bonded together by the adhesive of claim 4 in a cured condition.
Claim 7
Dependent Claim
28 words
The aqueous adhesive composition of claim 1 wherein amount of said N-hydroxymethyl reactive monomer is at least 2.38 percent, by weight based on the weight of said adhesive.
References Cited (Backward Citations)
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US2819237A
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |