A method of quenching a melt polycarbonate
AssigneeSabic Global Technologies B.V.
InventorIgnacio Vic Fernandez
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Abstract
In an embodiment, a process for forming a quenched composition comprises mixing an unquenched melt polycarbonate and a quenched melt polycarbonate to form the quenched composition; wherein the quenched polycarbonate was formed from a first melt polymerization, wherein the first melt polymerization comprises adding a quencher to form the quenched polycarbonate, wherein the unquenched polycarbonate was formed from a second melt polymerization, wherein the unquenched melt polycarbonate comprises an active catalyst used during the second melt polymerization, and wherein the second melt polymerization is free of a quencher addition.
Claims20
A process for forming a quenched composition comprising:
- mixing 40 to 95 wt % of an unquenched melt polycarbonate and 5 to 60 wt % of a quenched melt polycarbonate to form the quenched composition, wherein the weight percentage is based upon a total weight of the quenched composition;
- wherein the quenched melt polycarbonate was formed from a first melt polymerization, and wherein the quenched melt polycarbonate comprises greater than or equal to 0.5 ppm of free quencher;
- wherein the unquenched melt polycarbonate was formed from a second melt polymerization, wherein the unquenched melt polycarbonate comprises an active catalyst that is capable of further polymerizing the unquenched melt polycarbonate and that was used during the second melt polymerization.
Dependencies are inferred from the claim text.