US4053385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding stable materials to resinous cell frames
Assignee: BASF Corp
•
Filing: 1975-10-30
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Granted: 1977-10-11
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Expires: 1995-10-30
Abstract
Abstract Stable materials, such as films of fluorinated ethylene-propylene copolymers, are bonded to synthetic resinous cell frames with a cyanoacrylate adhesive. The so-covered frames are optimally employed in bipolar electrolytic filter press cells.
Inventors
- 👤 Stanley T. Hirozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:54
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B7/00; B32B7/04; B32B7/12; C; C25; C25B; C25B11/00; C25B11/02; C25B11/036; C25B9/00; C25B9/70; C25B9/73; C25B9/75
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
In a bipolar electrolytic filter press cell, said cell having a central frame interposed between the anode and cathode, the central frame being formed from a synthetic resin, the improvement which comprises: an inert film bonded to the frame with a cyanoacrylate adhesive.
Claim 2
Dependent Claim
43 words
In a bipolar electrolytic filter press cell, said cell having a central frame interposed between the anode and cathode, the central frame being formed from a synthetic resin, the improvement which comprises: an inert film bonded to the frame with a cyanoacrylate adhesive.
Claim 3
Dependent Claim
13 words
The improvement of claim 1 wherein the inert film is a fluorinated polyalkylene.
Claim 4
Dependent Claim
21 words
The improvement of claim 1 wherein the cell frame is formed from polypropylene containing twenty percent, by weight, of calcium silicate.
Claim 5
Dependent Claim
25 words
The improvement of claim 1 wherein the cyanoacrylate adhesive is an alkylcyanoacrylate having from about one to six carbon atoms in the alkyl portion thereof.
Claim 6
Dependent Claim
41 words
The improvement of claim 1 wherein the cyanoacrylate adhesive is a 2-cyanoacrylate of the formula: ##STR2## wherein R is selected from the group consisting of C 1 to C 16 alkyl, cycloalkyl, alkenyl, cycloalkenyl, phenyl and furfuryl radicals, and mixtures thereof.
Claim 7
Dependent Claim
54 words
The improvement of claim 1 wherein: a. the inert film is a fluorinated ethylenepropylene copolymer, b. the frame is formed from polypropylene containing about twenty percent, by weight, of calcium silicate, and c. the cyanoacrylate adhesive is an alkyl-2-cyanoacrylate having from about one to six carbon atoms and mixtures thereof in the alkyl portion.
Claim 8
Dependent Claim
14 words
The improvement of claim 2 wherein the inert film is a fluorinated ethylene-propylene copolymer.
Claim 9
Dependent Claim
27 words
The improvement of claim 5 wherein the cyanoacrylate adhesive is an alkyl-2-cyanoacrylate having from about one to six carbon atoms and mixtures thereof in the alkyl portion.
Claim 10
Dependent Claim
20 words
The improvement of claim 5 wherein the film has an etched surface, the etched surface being bonded to the frame.
References Cited (Backward Citations)
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |