US3117108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing methacrylate/nu-methylolacrylamide polymers
Assignee: Imperial Chemical Industries Ltd
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Filing: 1959-11-10
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Granted: 1964-01-07
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Expires: 1979-11-10
Abstract
No abstract record available.
Inventors
- 👤 Calvete Louis Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:09
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR THE PRODUCTION OF SOLID POLYMERIC MATERIAL BY BULK POLYMERIZATION OF A POLYMERIZABLE COMPOSITION COMPRISING HEATING SAID COMPOSITION IN THE PRESENCE OF A CATALYTIC AMOUNT OF A FREE RADICAL YIELDING POLYMERIZATION CATALYST UNTIL A SOLID POLYMERIC SHEET IS FORMED, SAID POLYMERIZABLE COMPOSITION CONSISTING ESSENTIALLY OF (A) A MONOETHYLENICALLY UNSATURATED MONOMERIC ESTER MATERIAL SELECTED FROM THE CLASS CONSISTING OF METHYL METHACRYLATE AND MIXTURES OF METHYL METHACRYLATE WITH UP TO 15% OF AN ESTER OF ACRYLIC ACID WITH A SATURATED MONOHYDRIC ALCOHOL CONTAINING NOT MORE THAN EIGHT CARBON ATOMS PER MOLECULE, AND (B) FROM .005 TO 0.50 MOLAR PROPORTIONS OF SAID MONOMERIC ESTER MATERIAL OF A SUBSTITUTED AMIDE HAVING THE FORMULA
Claim 2
Dependent Claim
111 words
A PROCESS FOR THE PRODUCTION OF SOLID POLYMERIC MATERIAL BY BULK POLYMERIZATION OF A POLYMERIZABLE COMPOSITION COMPRISING HEATING SAID COMPOSITION IN THE PRESENCE OF A CATALYTIC AMOUNT OF A FREE RADICAL YIELDING POLYMERIZATION CATALYST UNTIL A SOLID POLYMERIC SHEET IS FORMED, SAID POLYMERIZABLE COMPOSITION CONSISTING ESSENTIALLY OF (A) A MONOETHYLENICALLY UNSATURATED MONOMERIC ESTER MATERIAL SELECTED FROM THE CLASS CONSISTING OF METHYL METHACRYLATE AND MIXTURES OF METHYL METHACRYLATE WITH UP TO 15% OF AN ESTER OF ACRYLIC ACID WITH A SATURATED MONOHYDRIC ALCOHOL CONTAINING NOT MORE THAN EIGHT CARBON ATOMS PER MOLECULE, AND (B) FROM .005 TO 0.50 MOLAR PROPORTIONS OF SAID MONOMERIC ESTER MATERIAL OF A SUBSTITUTED AMIDE HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |