US3236800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating a rubber latex with a liquid hydrocarbon and oxygen containing compound
Assignee: Shell USA Inc
•
Filing: 1962-08-27
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Granted: 1966-02-22
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Jacques A Waterman
- 👤 Heij Gerardus E La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:49
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/065; C08C1/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR AGGLOMERATION OF AQUEOUS STYRENEBUTADIENE COPOLYMER LATICES SUBSEQUENT TO COMPLETION OF COPOLYMERIZATION WHICH COMPRISES: (1) INTIMATELY MIXING THEREWITH A MONOCYCLIC HYDROCARBON COMPONENT A OF THE GROUP CONSISTING OF BENZENE, ALKYLATED BENZENES, C5-6 CYCLOALIPHATIC HYDROCARBONS AND MIXTURES THEREOF; AND AN OXYGEN-CONTAINING NORMALLY LIQUID ORGANIC COMPOUND COMPONENT B OF THE GROUP CONSISTING OF LOWER ALIPHATIC KETONES, C1-4 SATURATED ALIPHATIC ALCOHOLS AND MIXTURES THEREOF FOR AT LEAST ABOUT 1 MINUTE WHILE MAINTAINING THE WATER AND COMPONENTS A AND B IN LIQUID STATE; THE VOLUME RATIO OF A:B BEING BETWEEN 10:90 AND 99:1; THE WEIGHT RATIO OF COPOLYMER PLUS A TO WATER PLUS B BEING BETWEEN 3.5:1 AND 5:1; (2) AND THEREAFTER AZEOTROPICALLY DISTILLING ESSENTIALLY ALL OF A AND B FROM THE TREATED LATEX, WHEREBY A LATEX HAVING AGGLOMERATED PARTICLES IS FORMED.
Claim 2
Dependent Claim
130 words
A PROCESS FOR AGGLOMERATION OF AQUEOUS STYRENEBUTADIENE COPOLYMER LATICES SUBSEQUENT TO COMPLETION OF COPOLYMERIZATION WHICH COMPRISES: (1) INTIMATELY MIXING THEREWITH A MONOCYCLIC HYDROCARBON COMPONENT A OF THE GROUP CONSISTING OF BENZENE, ALKYLATED BENZENES, C5-6 CYCLOALIPHATIC HYDROCARBONS AND MIXTURES THEREOF; AND AN OXYGEN-CONTAINING NORMALLY LIQUID ORGANIC COMPOUND COMPONENT B OF THE GROUP CONSISTING OF LOWER ALIPHATIC KETONES, C1-4 SATURATED ALIPHATIC ALCOHOLS AND MIXTURES THEREOF FOR AT LEAST ABOUT 1 MINUTE WHILE MAINTAINING THE WATER AND COMPONENTS A AND B IN LIQUID STATE; THE VOLUME RATIO OF A:B BEING BETWEEN 10:90 AND 99:1; THE WEIGHT RATIO OF COPOLYMER PLUS A TO WATER PLUS B BEING BETWEEN 3.5:1 AND 5:1; (2) AND THEREAFTER AZEOTROPICALLY DISTILLING ESSENTIALLY ALL OF A AND B FROM THE TREATED LATEX, WHEREBY A LATEX HAVING AGGLOMERATED PARTICLES IS FORMED.
References Cited (Backward Citations)
US2846427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |