Patent US2548802A successfully refreshed from Google Patents.
US2548802A
Expired / Lapsed
US
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Method of increasing the particle size of synthetic rubber latices
Assignee: Uniroyal Inc
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Filing: 1947-11-14
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Granted: 1951-04-10
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Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
- 👤 Chester E Linscott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF INCREASING THE SIZE OF THE DISPERSED POLYMER PARTICLES IN A SYNTHETIC RUBBER LATEX COMPRISING AN AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF DIENES OF THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, CHLOROPRENE, PIPERYLENE AND 2,3-DIMETHYL-BUTADIENE-1,3, AND MIXTURES OF SUCH DIENES WITH COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE CAPABLE OF FORMING COPOLYMERS WITH SUCH DIENES, SAID LATEX CONTAINING 3 TO 8 PARTS BY WEIGHT OF ALKALI SOAP PER 100 PARTS OF LATEX SOLIDS AND HAVING A PH OF AT LEAST 9, WHICH COMPRISES REDUCING THE PH OF THE LATEX TO WITHIN THE RANGE OF 4,5 TO 7,5 BY REACTING FORMALDEHYDE AND AN AMMONIUM SALT IN THE LATEX IN THE PRSENCE OF 0.5 TO 5% BASED ON THE WEIGHT OF THE LATEX OF HYDROXY COMPOUND CONSISTING SOLELY OF THE ELEMENTS C, H AND O AND SELECTED FROM THE GROUP CONSISTING OF PROPYL ALCOHOLS, AMYL ALCOHOLS BUTYL ALCOHOLS, HEXYL ALCOHOLS, OCTYL ALCOHOLS CYCLOHEXANOL, ALLYL ACLOHOL, METHALLYL ALCOHOL, DIACETONE ALCOHOL, TERPENEOL, ORTHOCRESOL, PARA-CRESOL AND META-CRESOL, AND THEREAFTER INCREASING THE PH OF THE LATEX TO AT LEAST 9
Claim 2
Independent Claim
182 words
THE METHOD OF INCREASING THE SIZE OF THE DISPERSED POLYMER PARTICLES IN A SYNTHETIC RUBBER LATEX COMPRISING AN AQUEOUS EMULSION POLYMERIZATE OF POLYMERIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF DIENES OF THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, CHLOROPRENE, PIPERYLENE AND 2,3-DIMETHYL-BUTADIENE-1,3, AND MIXTURES OF SUCH DIENES WITH COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE CAPABLE OF FORMING COPOLYMERS WITH SUCH DIENES, SAID LATEX CONTAINING 3 TO 8 PARTS BY WEIGHT OF ALKALI SOAP PER 100 PARTS OF LATEX SOLIDS AND HAVING A PH OF AT LEAST 9, WHICH COMPRISES REDUCING THE PH OF THE LATEX TO WITHIN THE RANGE OF 4,5 TO 7,5 BY REACTING FORMALDEHYDE AND AN AMMONIUM SALT IN THE LATEX IN THE PRSENCE OF 0.5 TO 5% BASED ON THE WEIGHT OF THE LATEX OF HYDROXY COMPOUND CONSISTING SOLELY OF THE ELEMENTS C, H AND O AND SELECTED FROM THE GROUP CONSISTING OF PROPYL ALCOHOLS, AMYL ALCOHOLS BUTYL ALCOHOLS, HEXYL ALCOHOLS, OCTYL ALCOHOLS CYCLOHEXANOL, ALLYL ACLOHOL, METHALLYL ALCOHOL, DIACETONE ALCOHOL, TERPENEOL, ORTHOCRESOL, PARA-CRESOL AND META-CRESOL, AND THEREAFTER INCREASING THE PH OF THE LATEX TO AT LEAST 9
References Cited (Backward Citations)
US2446115A
Cited
US2462591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |