IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
UP-0714942
(2007-03-07)
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등록번호 |
US-7709593
(2010-06-03)
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발명자
/ 주소 |
- Jenkins, Jason Christopher
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
160 |
초록
Processes for feeding catalyst systems to a melt phase process for the manufacture of polyester polymers, and more particularly, to split catalyst solution feeds to the melt phase process to provide the target amount and ratio of catalyst metals.
대표청구항
▼
What I claim is: 1. A process for feeding metals to one or more melt phase process lines for the production of polyester polymers comprising: A. providing a first feed stream, said first feed stream having a first molar ratio and comprising a mixture of metal A and a different metal B; B. providing
What I claim is: 1. A process for feeding metals to one or more melt phase process lines for the production of polyester polymers comprising: A. providing a first feed stream, said first feed stream having a first molar ratio and comprising a mixture of metal A and a different metal B; B. providing a second feed stream, said second feed stream comprising some kinds of metals as in the first feed stream but not all, or all of the same kind of metals in said first feed stream but at a second molar ratio different than said first molar ratio; and C. feeding said first stream to one or more melt phase process lines at an addition point on each line and feeding said second feed stream either: (i) into one or more of the melt phase process lines upstream or downstream of the addition point of the first feed stream into the melt phase lines or (ii) to the first feed stream leading to the one or more melt phase process lines, combining said first and second feed streams to provide a combined feed stream, and feeding the combined feed stream into one or more of the melt phase process lines. 2. The process of claim 1, wherein the first feed stream comprises metals which, together or alone, increase the reaction rate or promote esterification reaction rates to make, or ester exchange rates to make, or polycondensation rates to make the polyester polymers in the melt phase. 3. The process of claim 1, wherein the first feed stream comprises titanium, tin, antimony, manganese, cobalt, germanium, zinc, aluminum, alkaline earth metal, or alkali metals, or combinations thereof. 4. The process of claim 1, wherein the process is a continuous melt phase process. 5. The process of claim 1, wherein the first feed stream is fed at an addition point on a melt phase process line, the addition point comprising the initiation of a polycondensation, to a pipe connecting an esterification zone with a polycondensation zone, or at the end of the esterification zone. 6. The process of claim 1, wherein the first feed stream contains metals A and B, and the second feed stream contains metals A or B, but not both. 7. The process of claim 1, wherein metal A comprises titanium, antimony, germanium, zinc, aluminum, alkaline earth metal, or an alkali metal, and metal B comprises titanium, antimony, germanium, zinc, aluminum, alkaline earth metal, or an alkali metal. 8. The process of claim 1, wherein the first feed stream contains metals A and B, the second feed stream contains neither metals A nor B. 9. The process of claim 1, wherein the first feed stream contains metals A and B at a first molar ratio, and the second feed stream contain metals A and B at a molar ratio different from the first molar ratio. 10. The process of claim 1, wherein the second feed stream is fed to the melt phase process at an addition point upstream or downstream of the addition point of the first feed stream into the melt phase process. 11. The process of claim 10, wherein the addition point of the second feed stream is upstream of the addition point of the first feed stream. 12. The process of claim 10, wherein the addition point of the second feed stream is downstream of the addition point of the first feed stream. 13. The process of claim 12, wherein the addition point of the second feed stream is to a polycondensation zone. 14. The process of claim 13, wherein the addition point of the second feed stream is at a point before the It.V. of a polymer melt in the polycondensation zone reaches 0.3 dL/g. 15. The process of claim 13, wherein the addition point of the second feed stream is within 20 minutes after the first feed stream is added. 16. The process of claim 10, wherein the addition point of the second feed stream is to a conduit connecting an esterification zone and a polycondensation zone. 17. The process of claim 16, wherein the addition point of the second feed stream is within 10 meters of the addition point of the first feed stream. 18. The process of claim 1, wherein the first and second feed streams are combined to provide a combined feed stream, and the combined feed stream is fed into one or more of the melt phase process lines. 19. The process of claim 1, comprising multiple melt phase production lines, and one catalyst mix tank feeding a first feed stream to at least two melt phase production lines. 20. The process of claim 19, comprising a metals tank feeding a second feed stream to at least one of said melt phase production lines. 21. The process of claim 20, wherein the metals tank feeds a second feed stream to at least two of said melt phase production lines. 22. The process of claim 20, wherein at least a portion of the second feed stream is combined with said first feed stream to provide a combined feed to at least one of said melt phase production lines. 23. The process of claim 1, wherein the molar ratio of metals A and B in the first feed stream to the melt phase process is fixed for at least 5 days of production run time on a melt phase line. 24. The process of claim 1, wherein the second feed stream is added to an esterification zone before 50% conversion of an esterification reaction mixture in the esterification zone. 25. The process of claim 1, wherein the second feed stream is added to a paste tank or to a feed of paste to an esterification reactor. 26. The process of claim 1, wherein the second feed stream comprises and alkali metal. 27. The process of claim 26, wherein the second feed stream comprises lithium fed to at any point in the melt phase process prior to 50% conversion of an esterification reaction mixture in an esterification reactor. 28. The process of claim 1, wherein metal A comprises lithium and metal B comprises aluminum, and the second feed stream comprises lithium, wherein the molar ratio of A:B in a first feed stream ranges from 0.5:1 to 3:1. 29. The process of claim 1, wherein the second feed stream raises the molar ratio of Li:Al in the polyester polymer by at least 25% over the molar ratio of Li:Al in the first feed stream. 30. The process of claim 1, wherein the second feed stream raises the molar ratio of Li:Al in the polyester polymer by at least 100% over the molar ratio of Li:Al in the first feed stream. 31. The process of claim 1, wherein the first feed stream is added to an oligomer mixture upon completion of esterification, or after the oligomer mixture exits the last esterification reactor, and no later than when a polyester melt in a polycondensation zone obtains an It.V. of 0.3 dL/g. 32. The process of claim 1, wherein the polyester polymer contains at least 3 ppm of metal A and at least 5 ppm of metal B. 33. The process of claim 1, wherein metal A comprises aluminum in an amount sufficient to increase the It.V. of the polyester melt by at least 0.1 dL/g over 1 hour. 34. The process of any one of claim 1-33, wherein the polyester comprises: (a) a carboxylic acid component comprising at least 90 mole % residues of terephthalic acid or derivates of terephthalic acid, and (b) a hydroxyl component comprising at least 90 mole % residues of ethylene glycol or propane diol, based on 100 mole percent of the carboxylic acid component residues and 100 mole percent of the hydroxyl component residues in the polyester polymer. 35. The process of claim 1, wherein the throughput of at least one of said melt phase process lines is at least 50 tons/day in steady state operation. 36. A process for making polyester polymers comprising making a polyester polymer 1 from a melt phase production line 1, said polyester polymer 1 comprising a metal A and a metal B in a first metal molar ratio of A:B, and a polyester polymer 2 from a melt phase production line 2 comprising a metal A and a metal B at a second metal molar ratio A:B, wherein metal A is different from metal B, the metal molar ratios of polyester polymer 1 and 2 are different from each other, and each of melt phase production lines 1 and 2 are fed from a common catalyst mix tank supplying metals A and B. 37. The process of claim 36, wherein metal A comprises titanium, manganese, cobalt, aluminum, an alkaline earth metal, or an alkali metal, and metal B comprises titanium, manganese, cobalt, aluminum, an alkaline earth metal, or an alkali metal. 38. The process of claim 37, wherein polyester polymer 1 and 2 each contain at least 3 ppm of metal A and at least 5 ppm of metal B.
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