US3198776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing copolymers of ethylene and t-butyl acrylate
Assignee: Wyeth Holdings LLC
•
Filing: 1960-05-19
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Granted: 1965-08-03
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Mary L Miller
- 👤 Carol E Rauhut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:43
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/10; C08F22/12; C08F22/14; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD WHICH COMPRISES POLYMERIZING A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 0.1% TO ABOUT 99.9% OF A TERTIARY ALKYL ESTER OF A MONOETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID, SAID ALKYL GROUP CONTAINING FROM 4-5 CARBON ATOMS, INCLUSIVE, AND SAID ACID CONTAINING FROM 3-4 CARBON ATOMS, INCLUSIVE, AND FROM ABOUT 99.9% TO ABOUT 0.1% OF AN A-OLEFIN HAVING 2-3 CARBON ATOMS, INCLUSIVE, AT A TEMPERATURE OF FROM ABOUT -70*C. TO ABOUT 50*C. AND A PRESSURE NOT HIGHER THAN ABOUT ATMOSPHERIC IN THE PRESENCE OF A CHEMICALLY INERT, OXYGEN-FREE SOLVENT AND FROM ABOUT 0.001 TO 0.1 MOLE PER 100 ML. OF SAID MONOMER COMPOSITION, OF A CATALYST COMPOSED OF A MIXTURE OF (1) A METAL ALKYL REPRESENTED BY THE GENERAL FORMULA
Claim 2
Independent Claim
118 words
A METHOD WHICH COMPRISES POLYMERIZING A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 0.1% TO ABOUT 99.9% OF A TERTIARY ALKYL ESTER OF A MONOETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID, SAID ALKYL GROUP CONTAINING FROM 4-5 CARBON ATOMS, INCLUSIVE, AND SAID ACID CONTAINING FROM 3-4 CARBON ATOMS, INCLUSIVE, AND FROM ABOUT 99.9% TO ABOUT 0.1% OF AN A-OLEFIN HAVING 2-3 CARBON ATOMS, INCLUSIVE, AT A TEMPERATURE OF FROM ABOUT -70*C. TO ABOUT 50*C. AND A PRESSURE NOT HIGHER THAN ABOUT ATMOSPHERIC IN THE PRESENCE OF A CHEMICALLY INERT, OXYGEN-FREE SOLVENT AND FROM ABOUT 0.001 TO 0.1 MOLE PER 100 ML. OF SAID MONOMER COMPOSITION, OF A CATALYST COMPOSED OF A MIXTURE OF (1) A METAL ALKYL REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
US2504049A
Cited
US2449489A
Cited
US2657200A
Cited
US2808349A
Cited
GB833579A
Cited
US2910461A
Cited
US2996488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |