Patent US3277065A successfully refreshed from Google Patents.
US3277065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparation of prepolymers from allylic monomers
Assignee: Formica Corp
•
Filing: 1962-10-05
•
Granted: 1966-10-04
•
Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 John C Petropoulos
- 👤 John K Gillham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PROCESS FOR THE PRODUCTION OF A STABLE PREPOLYMER WHICH COMPRISES HEATING, TO A TEMPERATURE OF AT LEAST ABOUT 130*C., A MIXTURE OF (A) A FREE-RADICAL POLYMERIZABLE N-SUBSTITUTED MELAMINE MATERIAL WHICH CONTAINS AT LEAST ONE ALLYL GROUP AS THE ONLY POINT OF UNSATURATION AT WHICH POLYMERIZATION CAN OCCUR, AND WHICH WILL NOT SIGNIFICANTLY POLYMERIZE THERMALLY AND (B) A FREE-RADICAL GENERATING CATALYST COMPRISING 2,5-DIMETHYL-2,5-DI(T-BUTYLPEROXY)-N-HEXANE, THE AMOUNT OF SAID CATALYST BEING AT LEAST 0.003 PART BY VOLUME, AND THAT WHICH WILL ONLY INITIATE THE DEGREE OF POLYMERIZATION OF THE MONOMER AS DETERMINED BY PRE-EXPERIMENTATION ON SMALL QUANTITIES OF SAID MONOMER, THE NUMBER OF FREE RADICALS GENERATED BY THE DECOMPOSING CATALYST AT SAID TEMPERATURE BEING SUBSTANTIALLY THE SAME AS WOULD BE PRODUCED OVER A LONGER PERIOD OF TIME AT A LOWER TEMPERATURE.
Claim 2
Dependent Claim
129 words
A PROCESS FOR THE PRODUCTION OF A STABLE PREPOLYMER WHICH COMPRISES HEATING, TO A TEMPERATURE OF AT LEAST ABOUT 130*C., A MIXTURE OF (A) A FREE-RADICAL POLYMERIZABLE N-SUBSTITUTED MELAMINE MATERIAL WHICH CONTAINS AT LEAST ONE ALLYL GROUP AS THE ONLY POINT OF UNSATURATION AT WHICH POLYMERIZATION CAN OCCUR, AND WHICH WILL NOT SIGNIFICANTLY POLYMERIZE THERMALLY AND (B) A FREE-RADICAL GENERATING CATALYST COMPRISING 2,5-DIMETHYL-2,5-DI(T-BUTYLPEROXY)-N-HEXANE, THE AMOUNT OF SAID CATALYST BEING AT LEAST 0.003 PART BY VOLUME, AND THAT WHICH WILL ONLY INITIATE THE DEGREE OF POLYMERIZATION OF THE MONOMER AS DETERMINED BY PRE-EXPERIMENTATION ON SMALL QUANTITIES OF SAID MONOMER, THE NUMBER OF FREE RADICALS GENERATED BY THE DECOMPOSING CATALYST AT SAID TEMPERATURE BEING SUBSTANTIALLY THE SAME AS WOULD BE PRODUCED OVER A LONGER PERIOD OF TIME AT A LOWER TEMPERATURE.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |