Patent US2729627A successfully refreshed from Google Patents.
US2729627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride for use in plastisols
Assignee: Uniroyal Inc
•
Filing: 1952-11-26
•
Granted: 1956-01-03
•
Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Clide I Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:33
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
THE METHOD OF MAKING POLYVINYL CHLORIDE FOR USE IN PREPARING PLASTISOLS WHICH COMPRISES POLYMERIZING AN AQUEOUS EMULSION OF VINYL CHLORIDE TO A DESIRED FINAL CONVERSION OF MONOMERIC VINYL CHLORIDE TO POLYMER OF 50% TO 95% AT A TEMPERATURE FROM 40* C. TO 60* C. TO FORM A LATEX HAVING AN AVERAGE PARTICLE DIAMETER FROM 0.35 TO 0.9 MICRON, AND AT A TIME BETWEEN 50% AND 95% OF THE DESIRED FINAL CONVERSION OF VINYL CHLORIDE MONOMER TO POLYMER, ADDING TO THE REACTION MIXTURE OF A MOLECULAR WEIGHT REGULATOR FOR POLYVINYL CHLORIDE SELECTED FROM THE GROUP CONSISTING OF POLYHALOALKANES, POLYHALOALKENES, ALKYL ALDEHYDES, ETHYL DIBROMOACETATE, ETHYL DIBROMOMALONATE, BENZENE SULFONYL CHLORIDE AND ITS MONOMETHYL AND MONOHALO DERIVATIVES, 1,1,1-TRIBROMO-2-METHYL PROPONAL-2, ALLYL BROMIDE, N-CHLOROPHTHALIMIDE, ALKYL IODIDES, AND PHENACYL BROMIDE, IN EFFECTIVE AMOUNT TO GIVE A FINAL POLYMER HAVING AN INTRINSIC VISCOSITY OF FROM 0.75 TO 1.3 MEASURED IN CYCLOHEXANONE AT 30* C., AND AFTER THE DESIRED FINAL CONVERSION OF VINYL CHLORIDE TO POLYMER, REMOVING ANY UNREACTED RESIDUAL VINYL CHLORIDE MONOMER, AND RECOVERING THE POLYVINYL CHLORIDE FROM THE LATEX.
Claim 2
Independent Claim
172 words
THE METHOD OF MAKING POLYVINYL CHLORIDE FOR USE IN PREPARING PLASTISOLS WHICH COMPRISES POLYMERIZING AN AQUEOUS EMULSION OF VINYL CHLORIDE TO A DESIRED FINAL CONVERSION OF MONOMERIC VINYL CHLORIDE TO POLYMER OF 50% TO 95% AT A TEMPERATURE FROM 40* C. TO 60* C. TO FORM A LATEX HAVING AN AVERAGE PARTICLE DIAMETER FROM 0.35 TO 0.9 MICRON, AND AT A TIME BETWEEN 50% AND 95% OF THE DESIRED FINAL CONVERSION OF VINYL CHLORIDE MONOMER TO POLYMER, ADDING TO THE REACTION MIXTURE OF A MOLECULAR WEIGHT REGULATOR FOR POLYVINYL CHLORIDE SELECTED FROM THE GROUP CONSISTING OF POLYHALOALKANES, POLYHALOALKENES, ALKYL ALDEHYDES, ETHYL DIBROMOACETATE, ETHYL DIBROMOMALONATE, BENZENE SULFONYL CHLORIDE AND ITS MONOMETHYL AND MONOHALO DERIVATIVES, 1,1,1-TRIBROMO-2-METHYL PROPONAL-2, ALLYL BROMIDE, N-CHLOROPHTHALIMIDE, ALKYL IODIDES, AND PHENACYL BROMIDE, IN EFFECTIVE AMOUNT TO GIVE A FINAL POLYMER HAVING AN INTRINSIC VISCOSITY OF FROM 0.75 TO 1.3 MEASURED IN CYCLOHEXANONE AT 30* C., AND AFTER THE DESIRED FINAL CONVERSION OF VINYL CHLORIDE TO POLYMER, REMOVING ANY UNREACTED RESIDUAL VINYL CHLORIDE MONOMER, AND RECOVERING THE POLYVINYL CHLORIDE FROM THE LATEX.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |