US3937683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cohesive coating compositions
Assignee: British Cellophane Ltd
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Filing: 1973-11-19
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Granted: 1976-02-10
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Expires: 1993-11-19
Abstract
Abstract A cohesive coating composition comprises in dispersion in a liquid a mixture of between 51 and 99% by weight of a natural or synthetic rubber and between 1 and 49% by weight of a polyalkyl methacrylate in which dispersion there is incorporated between 5% and 35% by weight, based on the weight of the solids, of an inert particulate material having a mean particle size lying in the range between 0.2 and 50 microns. The compositions are applied to sheet materials used, for example, in packaging.
Inventors
- 👤 Andrew Nicholas Ferrar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:52
CPC Classifications
C; C09; C09J; C09J121/00; C09D; C09D121/00; C09D121/02; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/383; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C09J2409/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A cohesive coating composition comprising in dispersion in a liquid a mixture of between 70 and 90% by weight of carboxylated styrene butadiene rubber and between 10 and 30% by weight of poly-n-butyl methacrylate in which dispersion there is incorporated between 10% and 25% by weight, based on the weight of the solids, of particulate hydrated aluminum silicate having a mean particle size lying in the range between 2.0 and 20 microns.
Claim 2
Dependent Claim
72 words
A cohesive coating composition comprising in dispersion in a liquid a mixture of between 70 and 90% by weight of carboxylated styrene butadiene rubber and between 10 and 30% by weight of poly-n-butyl methacrylate in which dispersion there is incorporated between 10% and 25% by weight, based on the weight of the solids, of particulate hydrated aluminum silicate having a mean particle size lying in the range between 2.0 and 20 microns.
References Cited (Backward Citations)
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US2880185A
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US3132041A
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US3432339A
Cited
US3380938A
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US3714107A
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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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |