Patent US2979419A successfully refreshed from Google Patents.
US2979419A
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Process for upgrading articles prepared from monoalkenyl aromatic polymers
Assignee: Dow Chemical Co
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Filing: 1958-08-28
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Granted: 1961-04-11
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Expires: 1978-08-28
Abstract
No abstract record available.
Inventors
- 👤 Richard L Hill
- 👤 William R R Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/048; C08J7/08; C08J2325/00; C08J2421/00; C08J2421/02; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31855; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PROCESS FOR UPGRADING THERMOPLASTIC ARTICLES FABRICATED FROM THE POLYMERIZATES OF MONOALKENYL AROMATIC MONOMERS CONSISTING OF THE SEQUENTIAL STEPS OF (1) APPLYING TO AT LEAST ONE SURFACE OF SAID THERMOPLASTIC ARTICLE A CONTINUOUS UNIFORM COATING OF A FILM-FORMING LATEX OF A COPOLYMER OF A MONOALKENYL AROMATIC MONOMER AND A CONJUGATED DIOLEFIN, (2) DRYING SAID COATING TO A CLEAR COHERENT COATING, (3) APPLYING TO THE SO-TREATED SURFACE A CONTINUOUS UNIFORM COATING OF A FILM-FORMING DISPERSION OF (A) FROM ABOUT 67 TO 85 PERCENT BY WEIGHT OF A FIRST AQUEOUS LATEX OF A COPOLYMER OF VINYLIDENE CHLORIDE AND ACRYLONITRILE AND (B) FROM ABOUT 33 TO 15 PERCENT BY WEIGHT OF A SECOND AQUEOUS LATEX OF A TERNARY POLYMER OF VINYLIDENE CHLORIDE, VINYL CHLORIDE AND ACRYLONITRILE AND (4) DRYING SAID COATING OF STEP (3) TO A CLEAR COHERENT COATING.
Claim 2
Dependent Claim
136 words
A PROCESS FOR UPGRADING THERMOPLASTIC ARTICLES FABRICATED FROM THE POLYMERIZATES OF MONOALKENYL AROMATIC MONOMERS CONSISTING OF THE SEQUENTIAL STEPS OF (1) APPLYING TO AT LEAST ONE SURFACE OF SAID THERMOPLASTIC ARTICLE A CONTINUOUS UNIFORM COATING OF A FILM-FORMING LATEX OF A COPOLYMER OF A MONOALKENYL AROMATIC MONOMER AND A CONJUGATED DIOLEFIN, (2) DRYING SAID COATING TO A CLEAR COHERENT COATING, (3) APPLYING TO THE SO-TREATED SURFACE A CONTINUOUS UNIFORM COATING OF A FILM-FORMING DISPERSION OF (A) FROM ABOUT 67 TO 85 PERCENT BY WEIGHT OF A FIRST AQUEOUS LATEX OF A COPOLYMER OF VINYLIDENE CHLORIDE AND ACRYLONITRILE AND (B) FROM ABOUT 33 TO 15 PERCENT BY WEIGHT OF A SECOND AQUEOUS LATEX OF A TERNARY POLYMER OF VINYLIDENE CHLORIDE, VINYL CHLORIDE AND ACRYLONITRILE AND (4) DRYING SAID COATING OF STEP (3) TO A CLEAR COHERENT COATING.
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |