Title:
RECOVERY OF MODIFIER COMPOUNDS AND POLAR ORGANIC COMPOUNDS FROM A POLY(ARYLENE SULFIDE) RECYCLE MIXTURE
Document Type and Number:
WIPO Patent Application WO/2001/019908
Kind Code:
A2
Abstract:
A process is provided to recover at least one modifier compound and at least one polar organic compound from a P(AS) recycle mixture.
Inventors:
FODOR JEFFREY S (US)
GEIBEL JON F (US)
VIDAURRI FERNANDO C JR (US)
GEIBEL JON F (US)
VIDAURRI FERNANDO C JR (US)
Application Number:
PCT/US2000/040869
Publication Date:
March 22, 2001
Filing Date:
September 11, 2000
Export Citation:
Assignee:
PHILLIPS PETROLEUM CO (US)
FODOR JEFFREY S (US)
GEIBEL JON F (US)
VIDAURRI FERNANDO C JR (US)
FODOR JEFFREY S (US)
GEIBEL JON F (US)
VIDAURRI FERNANDO C JR (US)
International Classes:
C07C29/80; C07C31/04; C07D207/267; C07C51/43; C07C53/10; C07C319/14; C07C321/30; C08G75/02; C08J11/00; (IPC1-7): C08K/
Foreign References:
| JPS62177028A | 1987-08-03 | |||
| US5360890A | 1994-11-01 | |||
| US5167775A | 1992-12-01 |
Other References:
See also references of EP 1242521A2
Attorney, Agent or Firm:
Richards, John (NY, US)
Download PDF:
Claims:
CLAIM
| 1. | A process to recover at least one polar organic compound (POC) and at least one modifier from a P (AS) recycle mixture, said process comprising separating said P (AS) recycle mixture in a first separation zone to yield methanol and a recycle feedstock mixture; wherein said P (AS) recycle mixture comprises at least one modifier compound, at least one polar organic compound, and methanol; wherein said recycle feedstock mixture comprises said polar organic compound and said modifier compound. |
| 2. | A process according to claim 1, wherein said P (AS) recycle mixture is produced by a process comprising: 1) contacting a quench process reaction mixture with methanol to produce a quench process methanolrich mixture; wherein said quench process reaction mixture comprising high molecular weight poly (arylene sulfide), low molecular weight poly (arylene sulfide), cyclic and linear poly (arylene sulfide) oligomers, at least one polar organic compound, at least one modifier compound, and an alkali metal halide byproduct; 2) separating said quench process methanolrich mixture to produce a high molecular weight poly (arylene sulfide) product, and said P (AS) recycle mixture; wherein said P (AS) recycle mixture comprises methanol, said polar organic compound. |
| 3. | A process according to claim 2, wherein a low molecular weight poly (arylene sulfide) stream also is obtained in step (2), wherein said low molecular weight poly (arylene sulfide) stream comprises low molecular weight poly (arylene sulfide) and cyclic and linear poly (arylene sulfide) oligomers. |
| 4. | A process according to claim 1, wherein said P (AS) recycle mixture is produced by a process comprising: 1) contacting a quench process reaction mixture comprising high molecular weight poly (arylene sulfide), low molecular weight poly (arylene sulfide), cyclic and linear poly (arylene sulfide) oligomers, at least one POC, at least one modifier, and an alkali metal halide byproduct with at least one polar organic compound at a temperature sufficient to dissolve substantially all of said low molecular weight poly (arylene sulfide) and cyclic and linear oligomers to produce a quench process polar organic compoundrich mixture; 2) separating said quench process polar organic compoundrich mixture to produce a quench process solid stream and a quench process liquid stream; wherein said quench process solid stream is in a substantially solid form and comprises said high molecular weight poly (arylene sulfide), said polar organic compound, said modifier compound, and said alkali metal halide by product; wherein said quench process liquid stream is in a substantially liquid form and comprises substantially all of said low molecular weight poly (arylene sulfide) and cyclic and linear poly (arylene sulfide) oligomers, said polar organic compound, and said modifier compound; 3) contacting said quench process solid stream with methanol to produce a quench process methanolrich poly (arylene sulfide) product mixture; and 4) separating said quench process methanolrich poly (arylene sulfide) product mixture to produce a high molecular weight poly (arylene sulfide) product and said P (AS) recycle mixture; wherein said recycle mixture comprises methanol, said polar organic compound, and said modifier compound. |
| 5. | A process according to claim 4, further comprising: 1) contacting said quench process liquid stream with methanol to produce a quench process methanolrich low molecular weight poly (arylene sulfide) mixture; 2) separating said quench process methanolrich low molecular weight poly (arylene sulfide) mixture to produce a low molecular weight poly (arylene sulfide) product and said P (AS) recycle mixture; wherein said P (AS) recycle mixture comprises methanol, said polar organic compound, and said modifier compound; and wherein said low molecular weight poly (arylene sulfide) product comprises said low molecular weight poly (arylene sulfide) and cyclic and linear poly (arylene sulfide) oligomers. |
| 6. | A process according to claim 1, wherein said P (AS) recycle mixture is produced by a process comprising: 1) contacting a flash process reaction mixture with methanol to produce a flash process methanolrich mixture; wherein said flash process reaction mixture comprises high molecular weight poly (arylene sulfide) product, low molecular weight poly (arylene sulfide), cyclic and linear poly (arylene sulfide) oligomers, at least one POC, at least one modifier, and an alkali metal halide byproduct 2) separating said flash process methanolrich mixture to produce a poly (arylene sulfide) product and said P (AS) recycle mixture; wherein said poly (arylene sulfide) product comprises high molecular weight poly (arylene sulfide), low molecular weight poly (arylene sulfide), and cyclic and linear poly (arylene sulfide) oligomers; wherein said P (AS) recycle mixture comprises methanol, said polar organic compound, and said modifier compound. |
| 7. | A process according to claim 1, wherein said P (AS) recycle mixture is produced by a process comprising: 1) contacting a flash process reaction mixture comprising high molecular weight poly (arylene sulfide), low molecular weight poly (arylene sulfide), cyclic and linear poly (arylene sulfide) oligomers, at least one POC, at least one modifier, and an alkali metal halide byproduct with at least one polar organic compound at a temperature sufficient to dissolve a majority of said low molecular weight poly (arylene sulfide) and cyclic and linear oligomers to produce a flash process polar organic compoundrich mixture; 2) separating said flash process polar organic compoundrich mixture to produce a flash process solid stream and a flash process liquid stream; wherein said flash process solid stream is in a substantially solid form and comprises insoluble poly (arylene sulfide), said polar organic compound, said modifier compound, and said alkali metal halide byproduct; wherein said flash process liquid stream is in a substantially liquid form and comprises soluble poly (arylene sulfide) and said polar organic compound; 3) contacting said flash process solid stream with methanol to produce a flash process methanolrich poly (arylene sulfide) product mixture; and 4) separating said flash process methanolrich poly (arylene sulfide) product mixture to produce a high molecular weight poly (arylene sulfide) product and said P (AS) recycle mixture; wherein said P (AS) recycle mixture comprises methanol, said polar organic compound, and modifier compound. |
| 8. | A process according to claim 7, further comprising recycling said flash process liquid stream to a poly (arylene sulfide) polymerization process. |
Description:
INTERNATIONAL SEARCH REPORT International application No. PCT/USOO/40869 B. FIELDS SEARCHED Electronic data bases consulted (Name of data base and where practicable terms used): EAST search terms: polyarylene sulfide, modifier, promoter, polymerization aid, recover, recycle, separate, purification, extract, carboxylate, methanol, etc.