Patent US4833124A successfully refreshed from Google Patents.
Patent US2833753A successfully refreshed from Google Patents.
US2833753A
Expired / Lapsed
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Polymerization catalyst for acrylic monomers
Assignee: H D Justi & Son Inc
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Filing: 1955-10-13
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Granted: 1958-05-06
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Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Lal Joginder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF POLYMERIZING AN ACRYLIC ESTER MONOMER COMPRISING TREATING SAID ACRYLIC MONOMER WITH FROM 0.1 TO 5.0 MOL PERCENT BASED ON THE WEIGHT OF SAID MONOMER OF A POLYMERIZATION CATALYST CONSISTING OF A MEMBER OF THE GROUP CONSISTING OF (1) AN N-SALT OF SACCHARIN WITH AN N,N-DIALKYL ARYL AMINE AND (2) A MIXTURE OF A WATERSOLUBLE ORGANIC CARBOXYLIC ACID ACTIVATED AT THE ALPHA CARBON ATOM WITH AN ELECTRONEGATIVE SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN, PHENYL AND ARYLOXY SUBSTITUENTS AND AN N,N-DIALKYL ARYL AMINE, THE MOL RATIO OF SAID CARBOXYLIC ACID TO SAID LAST NAMED ARYL AMINE VARYING FROM ABOUT 0.8 TO 1.3.
Claim 2
Independent Claim
105 words
A METHOD OF POLYMERIZING AN ACRYLIC ESTER MONOMER COMPRISING TREATING SAID ACRYLIC MONOMER WITH FROM 0.1 TO 5.0 MOL PERCENT BASED ON THE WEIGHT OF SAID MONOMER OF A POLYMERIZATION CATALYST CONSISTING OF A MEMBER OF THE GROUP CONSISTING OF (1) AN N-SALT OF SACCHARIN WITH AN N,N-DIALKYL ARYL AMINE AND (2) A MIXTURE OF A WATERSOLUBLE ORGANIC CARBOXYLIC ACID ACTIVATED AT THE ALPHA CARBON ATOM WITH AN ELECTRONEGATIVE SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN, PHENYL AND ARYLOXY SUBSTITUENTS AND AN N,N-DIALKYL ARYL AMINE, THE MOL RATIO OF SAID CARBOXYLIC ACID TO SAID LAST NAMED ARYL AMINE VARYING FROM ABOUT 0.8 TO 1.3.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |