Patent US3169079A successfully refreshed from Google Patents.
US3169079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a polymer coating
Assignee: WR Grace and Co
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Filing: 1963-07-05
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Granted: 1965-02-09
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Ferington
- 👤 Rajendra N Chadha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/52; C08F4/06; C08F4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PROCESS FOR FORMING A POLYMER COATING OF A NONGASEOUS ESTER OF ACRYLIC ACID WHICH COMPRISES COATING A SUBSTRATE WITH A POLYMERIZABLE MIXTURE CONSISTING ESSENTIALLY OF AN ESTER OF ACRYLIC ACID AND 0.005-25 MOLE PERCENT OF THE ESTER OF ACRYLIC ACID OF AN ALUMINUM ALKYL COMPOUND, SAID ALUMINUM ALKYL COMPOUND BEING COMPLEXED IN A 1:1 MOLE RATIO WITH AN ESTER OF A MONO-CARBOXYLIC ACID, SAID ACID CONTAINING 1-20 CARBON ATOMS IN A FREE OXYGEN CONTAINING GAS, THE IMPROVEMENT WHEREBY YIELDS ARE INCREASED WHICH COMPRISES: (A) INITIATING THE POLYMERIZATION BY EXPOSING THE POLYMERIZABLE MIXTURE TO OXYGEN, AND TEHREAFTER (B) BEFORE THE POLYMERIZATION IS COMPLETE, EXCLUDING OXYGEN FROM THE POLYMERIZABLE MIXTURE AND (C) PERMITTING THE POLYMERIZATION TO PROCEED TO COMPLETION IN THE ABSENCE OF OXYGEN.
Claim 2
Dependent Claim
124 words
IN A PROCESS FOR FORMING A POLYMER COATING OF A NONGASEOUS ESTER OF ACRYLIC ACID WHICH COMPRISES COATING A SUBSTRATE WITH A POLYMERIZABLE MIXTURE CONSISTING ESSENTIALLY OF AN ESTER OF ACRYLIC ACID AND 0.005-25 MOLE PERCENT OF THE ESTER OF ACRYLIC ACID OF AN ALUMINUM ALKYL COMPOUND, SAID ALUMINUM ALKYL COMPOUND BEING COMPLEXED IN A 1:1 MOLE RATIO WITH AN ESTER OF A MONO-CARBOXYLIC ACID, SAID ACID CONTAINING 1-20 CARBON ATOMS IN A FREE OXYGEN CONTAINING GAS, THE IMPROVEMENT WHEREBY YIELDS ARE INCREASED WHICH COMPRISES: (A) INITIATING THE POLYMERIZATION BY EXPOSING THE POLYMERIZABLE MIXTURE TO OXYGEN, AND TEHREAFTER (B) BEFORE THE POLYMERIZATION IS COMPLETE, EXCLUDING OXYGEN FROM THE POLYMERIZABLE MIXTURE AND (C) PERMITTING THE POLYMERIZATION TO PROCEED TO COMPLETION IN THE ABSENCE OF OXYGEN.
References Cited (Backward Citations)
US3051585A
Cited
US3117112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |