IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0177932
(2002-06-21)
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발명자
/ 주소 |
- Edwards, Walter Lee
- Schiavone, Robert Joseph
- Nichols, Carl Steven
- Moore, Tony Clifford
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
31 인용 특허 :
112 |
초록
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The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The invention is also a method of making the polyester resin, which is capabl
The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The invention is also a method of making the polyester resin, which is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction.
대표청구항
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The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The invention is also a method of making the polyester resin, which is capabl
The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The invention is also a method of making the polyester resin, which is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction. claim 1 wherein said diaryl carbonate has structure IV wherein R4is independently at each occurrence a halogen atom, nitro group, cyano group, C1-C20alkyl group, C1-C20alkoxy carbonyl group, C4-C20cycloalkyl group, or C6-C20aryl group; and t and v are independently integers 0-5. 9. A method according to claim 8 wherein said diaryl carbonate is selected from the group consisting of diphenyl carbonate, bis(4-methylphenyl)carbonate, bis(4-chlorophenyl)carbonate, bis(4-fluorophenyl)carbonate, bis(2-chlorophenyl)carbonate, bis(2,4-difluorophenyl)carbonate, bis(4-nitrophenyl)carbonate, bis(2-nitrophenyl)carbonate, and bis(methyl salicyl)carbonate. 10. A method according to claim 1 wherein said contacting at least one diaryl carbonate with at least one dihydroxy aromatic compound in the presence of a transesterification catalyst comprising at least one polyhydropolyborate catalyst and at least one co-catalyst under melt polymerization conditions is carried out in the presence of one or more branching agents. 11. A method according to claim 10 wherein said branching agent is 1,1, 1-tris(4-hydroxyphenyl)ethane. 12. A method according to claim 1 wherein said contacting at least one diaryl carbonate with at least one dihydroxy aromatic compound in the presence of a transesterification catalyst comprising at least one polyhydropolyborate catalyst and at least one co-catalyst under melt polymerization conditions is carried out in the presence of at least one endcapping agent. 13. A method according to claim 12 wherein said endcapping agent is a hydroxy aromatic compound. 14. A method according to claim 13 wherein said hydroxy aromatic compound is selected from the group consisting of phenol, p-tert-butylphenol, p-cumylphenol, and cardanol. 15. A method according to claim 1 wherein said polyhydropolyborate catalyst is employed in an amount corresponding to between 1×10-8and 2.5×10-4moles polyhydropolyborate catalyst per mole dihydroxy aromatic compound. 16. A method according to claim 1 wherein said co-catalyst is selected from the group consisting of quaternary ammonium compounds, quaternary phosphonium compounds, and mixtures thereof. 17. A method according to claim 16 wherein said quaternary ammonium compounds are selected from the group consisting of tetramethyl ammonium hydroxide and tetrabutyl ammonium hydroxide, and said quaternary phosphonium compounds are selected from the group consisting of tetrabutyl phosphonium acetate and tetrabutylphosphonium hydroxide. 18. A method according to claim 1 wherein said co-catalyst is employed in an amount corresponding to between about 1×10-2and about 1×10-6moles of co-catalyst per mole of dihydroxy aromatic compound. 19. A method for the preparation of bisphenol A polycarbonate said method comprising contacting at least one diaryl carbonate with bisphenol A in the presence of a transesterification catalyst, at a temperature in a range between about 180° C. and about 310° C. and a pressure in a range between about 760 and about 1 torr to afford a product polycarbonate, said transesterification catalyst comprising at least one polyhydropolyborate catalyst and at least one co-catalyst. 20. A method of claim 19 wherein said polyhydropolyborate catalyst has structure I (BnHm)(M)p I wherein (BnHm) is a monovalent or divalent anion consisting of boron and hydrogen; n and m are positive integers n having a value greater than or equal to 3, m having a value greater than or equal to n; M is an alkali metal cation; and p is an integer having a value of 1 or 2. 21. A method according to claim 20, wherein n and m are both integers having values in a range from 3 to about 20. 22. A method according to claim 21, wherein said polyhydropolyborate catalyst is selected from the group consisting of Na2B12H12,K2B12H12,Cs2B12H12,Na2B10H10,K2B10H10,Cs2B10H10,NaB11H14,KB11H14,CsB11H14,NaB3H8,KB3H8,CsB3H8. 23. A method according to claim 19 wherein said diaryl carbonate has structure IV wherein R4is independently at each occurrence a halogen atom, nitro group, cyano group, C1-C20alkyl group, C1-C20alkoxy carbonyl group, C4-C20cycloalkyl group, or C6-C20aryl group; and t and v are independently integers 0-5. 24. A method according to claim 23 wherein said diaryl carbonate is selected from the group consisting of diphenyl carbonate, bis(4-methylphenyl)carbonate, bis(4-chlorophenyl)carbonate, bis(4-fluorophenyl)carbonate, bis(2-chlorophenyl)carbonate, bis(2,4-difluorophenyl)carbonate, bis(4-nitrophenyl)carbonate, bis(2-nitrophenyl)carbonate, and bis(methyl salicyl)carbonate. 25. A method according to claim 19 wherein said contacting at least one diaryl carbonate with bisphenol A in the presence of a transesterification catalyst comprising at least one polyhydropolyborate catalyst and at least one co-catalyst, is carried out in the presence of one or more branching agents. 26. A method according to claim 25 wherein said branching agent is 1,1, 1-tris(4-hydroxyphenyl)ethane. 27. A method according to claim 19 wherein said contacting at least one diaryl carbonate with bisphenol A in the presence of a transesterification catalyst comprising at least one polyhydropolyborate catalyst and at least one co-catalyst, is carried out in the presence of at least one endcapping agent. 28. A method according to claim 27 wherein said endcapping agent is a hydroxy aromatic compound. 29. A method according to claim 28 wherein said hydroxy aromatic compound is selected from the group consisting of phenol, p-tert-butylphenol, p-cumylphenol, and cardanol. 30. A method according to claim 19 wherein said polyhydropolyborate catalyst is employed in an amount corresponding to between 1×10-8and 2.5×10-4moles polyhydropolyborate catalyst per mole bisphenol A. 31. A method according to claim 19 wherein said co-catalyst is selected from the group consisting of quaternary ammonium compounds, quaternary phosphonium compounds, and mixtures thereof. 32. A method according to claim 31 wherein said quaternary ammonium compounds are selected from the group consisting of tetramethyl ammonium hydroxide and tetrabutyl ammonium hydroxide, and said quaternary phosphonium compounds are selected from the group consisting of tetrabutyl phosphonium acetate and tetrabutylphosphonium hydroxide. 33. A method for the preparation of bisphenol A polycarbonate, said method comprising contacting bisphenol A with diphenyl carbonate at a temperature in a range between about 180° C. and about 310° C. and a pressure in a range between about 760 torr and about 1 torr in the presence of cesium dodecahydrododecaborate (Cs2B12H12) and tetrabutylphosphonium acetate, said diphenyl carbonate being present in an amount corresponding to between about 0.9 and about 1.2 moles diphenyl carbonate per mole of bisphenol A, said cesium dodecahydrododecaborate being present in an amount corresponding to between about 1×10-8and about 2.5×10-4moles cesium dodecahydrododecaborate per mole bisphenol A employed, said tetrabutylphosphonium acetate being present in an amount corresponding to between about 1×10-6and about 1×10-2moles tetrabutylphosphonium acetate per mole bisphenol A employed.
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