High molecular weight, random, bisphenol based copoly(phosphonate carbonate)s
AssigneesFrx Polymers, Inc., Bayer Material Science AG
InventorsDieter Freitag, Pin Go, Lawino Kagumba, Stephan Konrad, Helmut-Werner Heuer, Berit Krauter, Pieter Ooms, Michael Prein, Johann Rechner
Life of this patent
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Abstract
Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.
Claims30
A random copoly(phosphonate carbonate) comprising randomly distributed monomeric units derived from carbonate and phosphonate monomers and having a phosphorous content of about 2% to about 10% by weight of the total random copoly(phosphonate carbonate) and total acidic components derived from phosphonate monomers of less than about 0.15% by weight.
A method for preparing a random copoly(phosphonate carbonate) comprising:
- combining one or more diaryl alkylphosphonate or optionally substituted diaryl alkylphosphonate, one or more optionally substituted diaryl carbonate, aromatic dihydroxide, and one or more transesterification catalyst, wherein the diaryl alkylphosphonate comprises 20 mole % based on the total diaryl alkylphosphonate and diaryl carbonate;
- and
- wherein acidic components in the diaryl alkylphosphonate comprise less than about 0.15% by weight;
- and
- covalently linking the one or more diaryl alkylphosphonate or optionally substituted diaryl alkylphosphonate, one or more diaryl carbonate, one or more aromatic dihydroxide, and transesterification catalyst by transesterification to form a random copoly(phosphonate carbonate).
An article of manufacture comprising random copoly(phosphonate carbonate) comprising randomly distributed monomeric units derived from carbonate and phosphonate monomers and having a phosphorous content of about 2% to about 10% by weight of the total random copoly(phosphonate carbonate) and total acidic components derived from phosphonate monomers of less than about 0.15% by weight.
Dependencies are inferred from the claim text.