US3297600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of resin coagulate with rubber latex to remove resinous fines
Assignee: Borg Warner Corp
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Filing: 1962-05-25
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Granted: 1967-01-10
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Richard R Blair
- 👤 Charles A Padgitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:36
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; C08F6/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
THE PROCESS OF TREATING THERMOPLASTIC RESINS, BELOW THEIR SECOND ORDER TRANSITION TEMPERATURE, TO REDUCE FINES THEREIN, COMPRISING THE STEPS OF: COMBINING A DILUTE COAGULANT SOLUTION AND LATEX OF SAID RESIN SELECTED FROM THE GROUP CONSISTING OF BUTADIENESTYRENE RESIN LACTICES, ACRYLONITRILE-BUTADIENE-STYRENE RESIN LATICES, STYRENE-ACRYLONITRILE RESIN LATEICES, POLYSTYRENE RESIN LATICES, POLYVINYL HALIDE RESIN LATICES, POLYACRYLIC ACID RESIN LATICES, AND MIXTURES THEREOF TO THEREBY COAGULATE THE RESIN THEREIN; TREATING SAID COAGULATED RESIN BY ADDING THERETO A DILUTE RUBBER LATEX MATERIAL, SAID RUBBER LATEX MATERIAL BEING ABOVE ITS SECOND ORDER TRANSITIONTEMPERATURE, SAID RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-STYRENE RUBBER LATICES, POLYISOBUTYLENE RUBBER LATICES, ISOPRENE-BUTADIENE RUBBER LATICES, BUTADIENE-ACRYLONITRILE RUBBER LATICES, NATURAL RUBBER LATICES, POLYBUTADIENE RUBBER LATICES, POLYURETHANE RUBBER LATICES, AND MIXTURES THEREOF; SAID DILUTE RUBBER LATEX BEING ADDED IN SUFFICIENT AMOUNT TO PROVIDE A DRY RUBBER TO DRY RESIN RATIO OF FROM 1/8 PART TO 2 PARTS BY WEIGHT RUBBER TO 100 PARTS BY WEIGHT RESIN; COAGULATING SAID RUBBER LATEX IN SAID COAGULANT SOLUTION; SEPARATING THE COAGULATED TREATED RESIN FROM ITS AQUEOUS SOLUTION; AND WASHING THE TREATED RESIN WITH WATER AND DRYING SAID RESIN TO THEREBY PROVIDE A RESINOUS MATERIAL SUBSTANTIALLY FREE OF FINES.
Claim 2
Dependent Claim
192 words
THE PROCESS OF TREATING THERMOPLASTIC RESINS, BELOW THEIR SECOND ORDER TRANSITION TEMPERATURE, TO REDUCE FINES THEREIN, COMPRISING THE STEPS OF: COMBINING A DILUTE COAGULANT SOLUTION AND LATEX OF SAID RESIN SELECTED FROM THE GROUP CONSISTING OF BUTADIENESTYRENE RESIN LACTICES, ACRYLONITRILE-BUTADIENE-STYRENE RESIN LATICES, STYRENE-ACRYLONITRILE RESIN LATEICES, POLYSTYRENE RESIN LATICES, POLYVINYL HALIDE RESIN LATICES, POLYACRYLIC ACID RESIN LATICES, AND MIXTURES THEREOF TO THEREBY COAGULATE THE RESIN THEREIN; TREATING SAID COAGULATED RESIN BY ADDING THERETO A DILUTE RUBBER LATEX MATERIAL, SAID RUBBER LATEX MATERIAL BEING ABOVE ITS SECOND ORDER TRANSITIONTEMPERATURE, SAID RUBBER LATEX SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-STYRENE RUBBER LATICES, POLYISOBUTYLENE RUBBER LATICES, ISOPRENE-BUTADIENE RUBBER LATICES, BUTADIENE-ACRYLONITRILE RUBBER LATICES, NATURAL RUBBER LATICES, POLYBUTADIENE RUBBER LATICES, POLYURETHANE RUBBER LATICES, AND MIXTURES THEREOF; SAID DILUTE RUBBER LATEX BEING ADDED IN SUFFICIENT AMOUNT TO PROVIDE A DRY RUBBER TO DRY RESIN RATIO OF FROM 1/8 PART TO 2 PARTS BY WEIGHT RUBBER TO 100 PARTS BY WEIGHT RESIN; COAGULATING SAID RUBBER LATEX IN SAID COAGULANT SOLUTION; SEPARATING THE COAGULATED TREATED RESIN FROM ITS AQUEOUS SOLUTION; AND WASHING THE TREATED RESIN WITH WATER AND DRYING SAID RESIN TO THEREBY PROVIDE A RESINOUS MATERIAL SUBSTANTIALLY FREE OF FINES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |