Patent US4223679A successfully refreshed from Google Patents.
Patent US3762987A successfully refreshed from Google Patents.
US3762987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water solubilized polyvinyl adhesive method
Assignee: Kao Corp
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Filing: 1971-04-20
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Granted: 1973-10-02
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Expires: 1991-04-20
Abstract
Abstract Materials are adhesively attached to each other by applying therebetween in bonding relationship a moisture sensitive watersolubilized water-insoluble high moecular weight polyvinyl compound, thus to produce a novel bonded article exhibiting strong cohesiveness in the dry state and significantly reduced cohesiveness in the wet state, thus permitting said materials to be separated upon moistening.
Inventors
- 👤 S Horin
- 👤 H Arai
- 👤 K Maruta
- 👤 Y Maruta
- 👤 I Maruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
B; B32; B32B; B32B9/00; B32B9/005; C; C09; C09J; C09J129/00; C09J129/02; C09J129/04; B32B7/00; B32B7/04; B32B7/12; B32B9/04; B32B9/06; C09J129/14; C09J131/00; C09J131/02; C09J131/04; C09J151/00; C09J151/003; C08; C08L; C08L2666/00; C08L2666/28; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/14; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
34 words
An article of manufacture according to claim 1, in which the bonding composition is applied at the rate of 1 to 50 grams, calculated as the solids, per 1 m2 of the sheet material.
Claim 2
Dependent Claim
25 words
An article of manufacture according to claim 1, in which one of the two materials is paper and the other material comprises ceramic tile pieces.
Claim 3
Dependent Claim
163 words
The process of adhesively attaching together two materials which comprises applying to one surface of a first sheet material a coating of an adhesive composition consisting essentially of an aqueous solution of (1) a water-insoluble high molecular weight polyvinyl compound selected from the group consisting of polyvinyl acetate and its partial saponification products, partially acetylated polyvinyl alcohol, graft copolymers of vinyl acetate with a copolymerizable monomer and polyvinyl acetals, said polyvinyl compound being water-solubilized by (2) an anionic surface active agent selected from the group consisting of carboxyl-containing surface active agents, alkyl sulfates, alkylarylsulfonates and alkylsulfonates, the ratio of said poly-vinyl compound to said surface active agent being in the range of from 10 : 100 to 100 : 10 parts by weight; applying said first coated sheet material, while said coating is wet with water, to a second material in bonding relationship by pressing the two materials together; and then drying said adhesive composition in order to adhere the two materials together.
Claim 4
Dependent Claim
26 words
The process of claim 4, in which the coating on the first material is dried and is remoistened prior to being applied to the second material.
Claim 5
Dependent Claim
25 words
The process of claim 4, in which the first material is applied to the second material before the coating on the first material has dried.
Claim 6
Dependent Claim
34 words
A process according to claim 4, including the further step of separating the two materials by applying water to said adhesive composition to reduce the bonding strength of said adhesive composition to said materials.
Claim 7
Dependent Claim
31 words
The method of claim 4, wherein one of the two materials is a paper material upon which is applied the said adhesive composition, and the other material comprises ceramic tile pieces.
Claim 8
Dependent Claim
29 words
The method of claim 4, in which one of the two materials is a porous sheet material, adapted to admit of alternatively drying and moistening of said adhesive composition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |