Sabic Global Technologies B.v.

Shpp Global Technologies B.v.

Shahram Shafaei

Robert Dirk Van De Grampel

Mark Adrianus Johannes Van Der Mee

Roland Sebastian Assink

Johannes De Brouwer

Tamara Marijke Eggenhuisen

Nathalie Gonzalez Vidal

Fabrizio Micciche

Kazuhiko Mitsui

Hendrikus Petrus Cornelis Van Heerbeek

Henrikus Petrus Cornelis Van Heerbeek

A thermoplastic composition comprises: a copolycarbonate comprising bisphenol A carbonate units and second carbonate units of the formula (I) and optionally, a bisphenol A homopolycarbonate; wherein the second carbonate units are present in an amount of 10 to 49 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate, the copolycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography, and the thermoplastic composition has a bisphenol A purity of at least 99.6%, or at least 99.7% as determined by high performance liquid chromatography. The thermoplastic composition has a Vicat B120 of 155&#xb0; C. or higher; and an increase in yellowness index of less than 10 during 1000 hours of heat aging at 155&#xb0; C. 

High heat copolycarbonate compositions having enhanced optical properties, articles formed therefrom, and methods of manufacture

tic composition includes: a high heat polycarbonate comprising optional bisphenol A carbonate units and high heat carbonate units of the formula (1), (2), (3), or a combination thereof; optionally a bisphenol A homopolycarbonate; and 2 to 40 ppm of an organosulfonic stabilizer of the formula (a) wherein the high heat carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the high heat polycarbonate and the bisphenol A homopolycarbonate, and optionally the high heat polycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160&#xb0; C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925. 

Polycarbonate compositions having enhanced optical properties, articles formed therefrom, and methods of manufacture

A lens containing a polycarbonate composition is disclosed. The polycarbonate composition includes a copolycarbonate having bisphenol A carbonate units and second carbonate units of the formula and 2 to 40 ppm of an organosulfonic stabilizer of the formula wherein the second carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate. The polycarbonate composition has: a Vicat B120 of 160&#xb0; C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925.

Copolycarbonate lenses, methods of manufacture, and applications thereof

A thermoplastic composition comprises: a copolycarbonate comprising bisphenol A carbonate units and second carbonate units of the formula (I); and 2 to 40 ppm of an organosulfonic stabilizer of the formula (II); wherein the second carbonate units are present in an amount of 20 to 49 mol %, preferably 30 to 40 mol % based on the sum of the moles of the copolycarbonate and the bisphenol A homopolycarbonate, and optionally the copolycarbonate comprises less than 2 ppm by weight of each of an ion of lithium, sodium, potassium, calcium, magnesium, ammonium, chlorine, bromine, fluorine, nitrite, nitrate, phosphite, phosphate, sulfate, formate, acetate, citrate, oxalate, trimethylammonium, and triethylammonium, as measured by ion chromatography; and the thermoplastic composition has: a Vicat B120 of 160&#xb0; C. or higher measured according to ISO 306; and a yellowness index of less than 12, measured according to ASTM D1925. 

Copolycarbonate compositions having enhanced optical properties, articles formed therefrom, and methods of manufacture

Growing community of inventors

Bergen op Zoom, Netherlands

Shahram Shafaei