US2649433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resol-alkyd resin product
Assignee: Individual
•
Filing: 1947-07-22
•
Granted: 1953-08-18
•
Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Honel Herbert
- 👤 Manzano Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:07
CPC Classifications
C; C08; C08L; C08L67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS OF PRODUCING A HARDENABLE RESIN, THE IMPROVEMENT WHICH COMPRISES COMBINING (1) A HARDENABLE LOW MOLECULAR RESOL OBTAINED FROM PHENOL AND FORMALDEHYDE AND FREE FROM ALKALINE CATALYST, WITH (2) A SUBSTANTIALLY NEUTRAL PLASTICIZING ALKYD RESIN CONTAINING LONG ALIPHATIC CHAINS AND HAVING AN EXCESS OF FREE ALCOHOLIC OH GROUPS OVER THE CARBOXYLIC GROUPS OF THE ESTER FORMING COMPONENTS, SAID EXCESS AMOUNTING TO AT LEAST ONE-GRAM OH GROUP PER 250 G. OF THE RESIN, BY PROTRACTED HEATING BEYOND THE POINT OF REMOVAL OF THE WATER CONTAINED IN THE CONDENSATION PRODUCT IN A SLIGHTLY ACID MEDIUM AT A TEMPERATURE AND FOR A PERIOD INSUFFICIENT FOR CARRYING OUT THE HARDENING REACTION BUT SUFFICIENT ETHERIFICATION, AND INTERRUPTING THE HEATING BEFORE GELATION TAKES PLACE.
Claim 2
Dependent Claim
120 words
IN A PROCESS OF PRODUCING A HARDENABLE RESIN, THE IMPROVEMENT WHICH COMPRISES COMBINING (1) A HARDENABLE LOW MOLECULAR RESOL OBTAINED FROM PHENOL AND FORMALDEHYDE AND FREE FROM ALKALINE CATALYST, WITH (2) A SUBSTANTIALLY NEUTRAL PLASTICIZING ALKYD RESIN CONTAINING LONG ALIPHATIC CHAINS AND HAVING AN EXCESS OF FREE ALCOHOLIC OH GROUPS OVER THE CARBOXYLIC GROUPS OF THE ESTER FORMING COMPONENTS, SAID EXCESS AMOUNTING TO AT LEAST ONE-GRAM OH GROUP PER 250 G. OF THE RESIN, BY PROTRACTED HEATING BEYOND THE POINT OF REMOVAL OF THE WATER CONTAINED IN THE CONDENSATION PRODUCT IN A SLIGHTLY ACID MEDIUM AT A TEMPERATURE AND FOR A PERIOD INSUFFICIENT FOR CARRYING OUT THE HARDENING REACTION BUT SUFFICIENT ETHERIFICATION, AND INTERRUPTING THE HEATING BEFORE GELATION TAKES PLACE.
References Cited (Backward Citations)
US1977652A
Cited
US1870453A
Cited
GB367001A
Cited
DE688268C
Cited
US2337874A
Cited
US2289266A
Cited
FR889799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |