US3909207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical stirred mass polymerization apparatus
Assignee: Monsanto Co
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Filing: 1973-03-09
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Granted: 1975-09-30
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Expires: 1993-03-09
Abstract
Abstract Reactor for continuous mass polymerization of alkenylaromatic monomers comprising a vertically oriented cylindrical chamber, means to cool at least the lower portion of the chamber, and agitating means comprising a plurality of integral circular disks positioned in vertically spaced relationship along a rotating vertical central shaft, each disk having attached at spaced intervals about its circumference a plurality of radially extending flat blade members. The blade members on the lowermost disk are vertically oriented, whereas the blades on the remaining disks are angularly displaced about their horizontal axes.
Inventors
- 👤 Wallace G Bir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/0006; B01J19/0013; C; C08; C08F; C08F2/00; C08F2/36; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00083; B01J2219/00087; B01J2219/0009; B01J2219/00094; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/00768; B01J2219/18; B01J2219/185; Y; Y10; Y10S; Y10S422/00; Y10S422/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
170 words
AN APPARATUS ADAPTED FOR USE IN CONTINUOUS BULK POLYMERIZATION OF ALKENYLAROMATIC MONOMERS, COMPRISING A VERTICALLY ORIENTED GENERALLY CYLINDRICAL CHAMBER FORMED BY A CASTING PROVIDED WITH TERMINAL CLOSURES AND HAVING A MONOMER INPUT MEANS NEAR ITS UPPER END AND A POLYMERIC PRODUCT OUT PUT MEANS NEAR ITS LOWER END, COIL MEANS FOR COOLING AT LEAST THE LOWER PORTION OF SAID CHAMBER, A ROTABLE MEMBER POSITIONED ALONG THE VERTICAL AXIS OF SAID CHAMBER COMPRISING A CENTER SHAFT HAVING A PLURALITY OF INTEGRAL CIRCULAR HORIZONTALLY ORIENTED DISK MEMBERS POSITIONED IN VERTICALLY SPACED RELARIONSHIP THEREALONG, EACH OF SAID DISK MEMBERS HAVING ATTACHED AT SPACED INTERVALS ABOUT ITS CIRCUMFERENCE A PLURALITY OF RADICALLY EXTENDING FLAT BLADE MEMBERS, THE BLADE MEMBERS OF LOWERMOST DISK MEMBER BEING VERTICALLY ORIENTED WITH RESPECT TO THEIR FLAT SURFACES AND ALL BLADE MEMBERS OF THE REMAINING DISK MEMBERS HAVING THEIR FLAT SURFACES ORIENTED AT AN ANGLE UPWARDLY INCLINED IN THE DIRECTION OF ROTATION WITH RESPECT TO THE PLANE OF SAID HORIZONTAL DISK MEMBERS, AND A DIVIDING MEANS TO PROVIDE ROTATION THEREIN.
Claim 2
Independent Claim
170 words
AN APPARATUS ADAPTED FOR USE IN CONTINUOUS BULK POLYMERIZATION OF ALKENYLAROMATIC MONOMERS, COMPRISING A VERTICALLY ORIENTED GENERALLY CYLINDRICAL CHAMBER FORMED BY A CASTING PROVIDED WITH TERMINAL CLOSURES AND HAVING A MONOMER INPUT MEANS NEAR ITS UPPER END AND A POLYMERIC PRODUCT OUT PUT MEANS NEAR ITS LOWER END, COIL MEANS FOR COOLING AT LEAST THE LOWER PORTION OF SAID CHAMBER, A ROTABLE MEMBER POSITIONED ALONG THE VERTICAL AXIS OF SAID CHAMBER COMPRISING A CENTER SHAFT HAVING A PLURALITY OF INTEGRAL CIRCULAR HORIZONTALLY ORIENTED DISK MEMBERS POSITIONED IN VERTICALLY SPACED RELARIONSHIP THEREALONG, EACH OF SAID DISK MEMBERS HAVING ATTACHED AT SPACED INTERVALS ABOUT ITS CIRCUMFERENCE A PLURALITY OF RADICALLY EXTENDING FLAT BLADE MEMBERS, THE BLADE MEMBERS OF LOWERMOST DISK MEMBER BEING VERTICALLY ORIENTED WITH RESPECT TO THEIR FLAT SURFACES AND ALL BLADE MEMBERS OF THE REMAINING DISK MEMBERS HAVING THEIR FLAT SURFACES ORIENTED AT AN ANGLE UPWARDLY INCLINED IN THE DIRECTION OF ROTATION WITH RESPECT TO THE PLANE OF SAID HORIZONTAL DISK MEMBERS, AND A DIVIDING MEANS TO PROVIDE ROTATION THEREIN.
Claim 3
Dependent Claim
26 words
The apparatus as defined by claim 1, further comprising a plurality of vertical baffle members positioned in spaced relationship about the circumference of said chamber casing.
Claim 4
Dependent Claim
107 words
The apparatus as defined by claim 2, wherein said cooling means comprises a first set of a plurality of cooling coils extending around the entire circumference of said chamber and being positioned in vertically spaced relationship adjacent the entire vertical length of the inner wall of said chamber casing and being supported by said baffle members, and a second set of a plurality of cooling coils extending around the entire circumference of said chamber, being positioned radially inwardly from said first set of cooling coils and extending vertically from the bottom of said chamber to a point at least above the plane of the lowermost disk member.
Claim 5
Dependent Claim
24 words
The apparatus as defined by claim 1, further comprising a heating fluid jacket surrounding at least the side wall portions of said chamber casing.
Claim 6
Dependent Claim
21 words
The apParatus as defined by claim 1, further comprising means providing for vertical adjustment of said disk members along said shaft.
Claim 7
Dependent Claim
16 words
The apparatus as defined by claim 1, wherein there is a total of three disk members.
Claim 8
Dependent Claim
41 words
The apparatus as defined by claim 1, wherein the blade members of said remaining disk members have their flat surfaces upwardly inclined at a 45* angle in the direction of rotation with respect to the plane of the horizontal disk members.
Claim 9
Dependent Claim
23 words
The apparatus as defined by claim 1, wherein there are four blade members positioned at 90* intervals on each of said disk members.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |