Patent US3062759A successfully refreshed from Google Patents.
US3062759A
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Process of producing blotter-type vinyl halide resin and product obtained thereby
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1959-06-23
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Granted: 1962-11-06
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Expires: 1979-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bingham
- 👤 Harry D Forrest
- 👤 William J Hanlon
- 👤 James L Hutson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:50
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD OF PRODUCING A BLOTTER TYPE RESIN OF A VINYL HALIDE IN A SUSPENSION POLYMERIZATION SYSTEM COMPRISING THE STEPS OF MIXING WATER, A MONOMER COMPRISING A VINYL HALIDE, A POLYMERIZATION CATALYST AND A PROTECTIVE COLLOID TO FORM A MIXTURE IN A CLOSED REACTION ZONE, AGITATING SAID MIXTURE AT ELEVATED TEMPERATURE TO MAINTAIN SAID MONOMER IN AQUEOUS SUSPENSION AND TO POLYMERIZE SAID MONOMER WHILE MAINTAINING A PRESSURE IN SAID ZONE, AND SUDDENLY REDUCING PRESSURE ABOUT 35 TO 130 POUNDS PER SQUARE INCH ON ABOUT 2 TO 50 PERCENT BY WEIGHT OF THE REACTION MIXTURE TO VOLATILIZE THE UNPOLYMERIZED VINYL MONOMER, WHEN THE CONVERSION OF SAID MONOMER TO POLYMER HAS REACHED ABOUT 40 TO 55 PERCENT OF THAT POSSIBLE, BY PASSING IT THROUGH AN ORIFICE TO A SECOND ZONE WHILE MAINTAINING A PRESSURE THEREIN OF ABOUT 35 TO 130
Claim 2
Independent Claim
138 words
A METHOD OF PRODUCING A BLOTTER TYPE RESIN OF A VINYL HALIDE IN A SUSPENSION POLYMERIZATION SYSTEM COMPRISING THE STEPS OF MIXING WATER, A MONOMER COMPRISING A VINYL HALIDE, A POLYMERIZATION CATALYST AND A PROTECTIVE COLLOID TO FORM A MIXTURE IN A CLOSED REACTION ZONE, AGITATING SAID MIXTURE AT ELEVATED TEMPERATURE TO MAINTAIN SAID MONOMER IN AQUEOUS SUSPENSION AND TO POLYMERIZE SAID MONOMER WHILE MAINTAINING A PRESSURE IN SAID ZONE, AND SUDDENLY REDUCING PRESSURE ABOUT 35 TO 130 POUNDS PER SQUARE INCH ON ABOUT 2 TO 50 PERCENT BY WEIGHT OF THE REACTION MIXTURE TO VOLATILIZE THE UNPOLYMERIZED VINYL MONOMER, WHEN THE CONVERSION OF SAID MONOMER TO POLYMER HAS REACHED ABOUT 40 TO 55 PERCENT OF THAT POSSIBLE, BY PASSING IT THROUGH AN ORIFICE TO A SECOND ZONE WHILE MAINTAINING A PRESSURE THEREIN OF ABOUT 35 TO 130
References Cited (Backward Citations)
US2674593A
Cited
US2772256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |