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US 2014/0275466 A1Published application
Production of a polycarbonate with limited metal residuals
AssigneeSabic Global Technologies B.V.
InventorsIgnacio Vic Fernandez, Mykhaylo Lyakhovych, Sergio Ferrer Nadal
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Abstract
A method for producing a polycarbonate comprising: reacting a diaryl carbonate with a dihydroxy compound to form a polycarbonate, wherein the polycarbonate comprises: less than or equal to 1000 ppb of molybdenum; less than or equal to 33 ppb of vanadium; less than or equal to 33 ppb of chromium; less than or equal to 375 ppb of niobium; less than or equal to 33 ppb of nickel; less than or equal to 10 ppb of zirconium; and less or equal to 10 ppb iron.
Claims22
A method for producing a polycarbonate comprising:
- reacting a diaryl carbonate with a dihydroxy compound to form a polycarbonate,
- wherein the polycarbonate comprises:
- less than or equal to 500 ppb of molybdenum based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of vanadium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of chromium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 75 ppb of titanium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 375 ppb of niobium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of nickel based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 750 ppb of zirconium based on the total weight of the diaryl carbonate and the metal contaminant;
- and
- less or equal to 10 ppb iron based on the total weight of the diaryl carbonate and the metal contaminant.
8 more elements
A diaryl carbonate comprising:
- less than or equal to 500 ppb of molybdenum based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of vanadium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of chromium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 75 ppb of titanium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 375 ppb of niobium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of nickel based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 10 ppb of zirconium based on the total weight of the diaryl carbonate and the metal contaminant;
- and
- less or equal to 10 ppb iron based on the total weight of the diaryl carbonate and the metal contaminant.
6 more elements
A method for producing a polycarbonate comprising:
- reacting a diaryl carbonate with a dihydroxy compound to form a polycarbonate, wherein the polycarbonate comprises:
- less than or equal to 1,000 ppb of molybdenum;
- less than or equal to 33 ppb of vanadium;
- less than or equal to 33 ppb of chromium;
- less than or equal to 33 ppb of nickel;
- and less or equal to 10 ppb iron.
3 more elements
A method for producing a polycarbonate comprising:
- selecting a diaryl carbonate based on a maximum contaminant content and reacting the diaryl carbonate with a dihydroxy compound to form a melt polycarbonate comprising less than or equal to 500 ppb of molybdenum based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of vanadium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of chromium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 75 ppb of titanium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 375 ppb of niobium based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 33 ppb of nickel based on the total weight of the diaryl carbonate and the metal contaminant;
- less than or equal to 10 ppb of zirconium based on the total weight of the diaryl carbonate and the metal contaminant;
- and less or equal to 10 ppb iron based on the total weight of the diaryl carbonate and the metal contaminant;
- wherein the reacting occurs in at least one reactor, and wherein the reactor comprises a reactor contaminant.
6 more elements
Dependencies are inferred from the claim text.