Ortho esters as BPA scavenger in polycarbonate product

Details Ortho esters as BPA scavenger in polycarbonate product Ortho esters as BPA scavenger in polycarbonate product

1997-01-31

1998-09-15

Buttner, David

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524369, 524375, 524378, 528494, C08K 506, C08L 6900

Patent

active

058079122

ABSTRACT:
Polycarbonate resins are freed of unreacted residues of the dihydric phenol reactants employed in their preparation by heating the resins in the presence of ortho esters or ortho carbonates.

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patent: 3897392 (1975-07-01), Haupt
patent: 3915926 (1975-10-01), Wambach
patent: 4188314 (1980-02-01), Fox et al.
patent: 5086097 (1992-02-01), Jorissen
patent: 5391616 (1995-02-01), Khouri

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