US2593414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mixing and coprecipitating a polysulfone resin latex with another latex
Assignee: Phillips Petroleum Co
•
Filing: 1948-10-21
•
Granted: 1952-04-22
•
Expires: 1968-10-21
Abstract
No abstract record available.
Inventors
- 👤 Willie W Crouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/205; C08G75/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A METHOD FOR PRODUCING A MODIFIED HETEROPOLYMERIC RESINOUS MATERIAL WHICH COMPRISES INTERRACTING IN A FIRST REACTION SYSTEM SULFUR DIOXIDE AND AN UNSATURATED ORGANIC COMPOUND WHICH REACTS WITH SULFUR DIOXIDE TO FORM A HETEROPOLYMER WHICH INCORPORATED IN AN AQUEOUS EMULSION, SAID FIRST REACTION SYSTEM HAVING A PH LESS THAN 7 AFTER SAID INTERREATION; POLYMERIZING IN A SECOND REACTION SYSTEM A POLYMERIZABLE MONOMERIC COMPOUND HAVING AN ACTIVE VINYL GROUP ATTACHED THERETO WHILE INCORPORATED IN AN AQUEOUS EMULSION, SAID SECOND REACTION SYSTEM HAVING A PH GREATER THAN 7 AFTER SAID POLYMERIZATION; INCREASING THE PH OF THE RECTION MIXTURE FROM SAID FIRST REACTION SYSTEM FROM A PH OF LESS THAN 7 TO A PH GREATER THAN 7 SO AS TO MATCH THE PH OF THE REACTION MIXTURE FROM SAID SECOND REACTION SYSTEM MIXING A RESULTING REACTION MIXTURE FROM SAID FIRST AND FROM SAID SECOND REACTION SYSTEMS IN THE PROPORTIONS SUCH THAT THE RESULTING MIXTURE WILL CONTAIN FROM 1 TO 40 PARTS BY WEIGHT OF POLYMER PRESENT IN SAID SECOND REACTION MIXTURE PER 100 PARTS BY WEIGHT OF POLYMER PRESENT IN THE FIRST REACTION MIXTURE, AND COPRECIPITATING A MODIFIED HETEROPOLYMERIC RESINOUS MATERIAL FROM THE RESULTING MIXTURE.
Claim 2
Independent Claim
191 words
A METHOD FOR PRODUCING A MODIFIED HETEROPOLYMERIC RESINOUS MATERIAL WHICH COMPRISES INTERRACTING IN A FIRST REACTION SYSTEM SULFUR DIOXIDE AND AN UNSATURATED ORGANIC COMPOUND WHICH REACTS WITH SULFUR DIOXIDE TO FORM A HETEROPOLYMER WHICH INCORPORATED IN AN AQUEOUS EMULSION, SAID FIRST REACTION SYSTEM HAVING A PH LESS THAN 7 AFTER SAID INTERREATION; POLYMERIZING IN A SECOND REACTION SYSTEM A POLYMERIZABLE MONOMERIC COMPOUND HAVING AN ACTIVE VINYL GROUP ATTACHED THERETO WHILE INCORPORATED IN AN AQUEOUS EMULSION, SAID SECOND REACTION SYSTEM HAVING A PH GREATER THAN 7 AFTER SAID POLYMERIZATION; INCREASING THE PH OF THE RECTION MIXTURE FROM SAID FIRST REACTION SYSTEM FROM A PH OF LESS THAN 7 TO A PH GREATER THAN 7 SO AS TO MATCH THE PH OF THE REACTION MIXTURE FROM SAID SECOND REACTION SYSTEM MIXING A RESULTING REACTION MIXTURE FROM SAID FIRST AND FROM SAID SECOND REACTION SYSTEMS IN THE PROPORTIONS SUCH THAT THE RESULTING MIXTURE WILL CONTAIN FROM 1 TO 40 PARTS BY WEIGHT OF POLYMER PRESENT IN SAID SECOND REACTION MIXTURE PER 100 PARTS BY WEIGHT OF POLYMER PRESENT IN THE FIRST REACTION MIXTURE, AND COPRECIPITATING A MODIFIED HETEROPOLYMERIC RESINOUS MATERIAL FROM THE RESULTING MIXTURE.
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) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |