Patent US3005411A successfully refreshed from Google Patents.
US3301805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of stable aqueous dispersions of vinyl ester polymers
Assignee: Hoechst AG
•
Filing: 1962-05-07
•
Granted: 1967-01-31
•
Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Kahrs Karl-Heinz
- 👤 Staller Anton
- 👤 Zimmermann Johann Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:56
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/06; C08F18/00; C08F18/02; C08F18/04; C08F261/00; C08F261/02; C08F261/04; C08F285/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR THE PRODUCTION OF AQUEOUS DISPERSIONS OF VINYL ESTER POLYMERS HAVING A GOOD FREEZE-THAW STABILITY, WHICH COMPRISES THE STEP OF POLYMERIZING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL ESTERS OF ALIPHATIC SATURATED CARBOXYLIC ACIDS WITH 2 TO 18 CARBON ATOMS AND VINYL BENZOATE IN THE PRESENCE OF AN EMULSIFIER COMBINATION CONSISTING OF 1 TO 20 PARTS BY WEIGHT OF A WATER SOLUBLE GRAFT POLYMER OF VINYL ACETATE ON POLYALKYLENE GLYCOL AND 1 TO 15 PARTS BY WEIGHT OF A POLYVINYL ALCOHOL, SAID PARTS BEING CALCULATED ON 100 PARTS OF THE MONOMER.
Claim 2
Dependent Claim
97 words
A PROCESS FOR THE PRODUCTION OF AQUEOUS DISPERSIONS OF VINYL ESTER POLYMERS HAVING A GOOD FREEZE-THAW STABILITY, WHICH COMPRISES THE STEP OF POLYMERIZING AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL ESTERS OF ALIPHATIC SATURATED CARBOXYLIC ACIDS WITH 2 TO 18 CARBON ATOMS AND VINYL BENZOATE IN THE PRESENCE OF AN EMULSIFIER COMBINATION CONSISTING OF 1 TO 20 PARTS BY WEIGHT OF A WATER SOLUBLE GRAFT POLYMER OF VINYL ACETATE ON POLYALKYLENE GLYCOL AND 1 TO 15 PARTS BY WEIGHT OF A POLYVINYL ALCOHOL, SAID PARTS BEING CALCULATED ON 100 PARTS OF THE MONOMER.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |