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US 2006/0142527 A1Published application
Transparent compositions, methods for the preparation thereof, and articles derived therefrom
AssigneeGeneral Electric Company
InventorsKatherine Glasgow, Brian Mullen, Paul Sybert
Life of this patent
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Abstract
A thermoplastic composition is disclosed, comprising the reaction product of: a polyester polycarbonate comprising a polyester unit and a polycarbonate unit; a polysiloxane polycarbonate copolymer having a haze of 30% or less, comprising a polycarbonate unit and a polysiloxane unit; and a transesterification catalyst. The resulting thermoplastic composition has a haze of 30% or less as measured according to ASTM D1003-00 at a thickness of 3.2 millimeters. A method of forming the composition and articles formed from the composition are also disclosed.
Claims31
A reaction product of a combination comprising:
- a first copolymer comprising
- aromatic ester units of formula (1)
- wherein T is a divalent aromatic radical and D1 is a divalent organic radical, and carbonate units of formula (2)
- wherein at least 60% of the total number of D2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals;
- a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3)
- wherein each occurrence of R3 is independently C1-C12 hydrocarbyl, and the second copolymer has ahaze of less than or equal to 30%, measured according to ASTM D1003-00 at athickness of 3.2 millimeters;
- and
- a transesterification catalyst,
- wherein the reaction product has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
6 more elements
A method for forming a reaction product, comprising reacting, a combination comprising:
- a first copolymer comprising
- aromatic ester units of formula (1)
- wherein T is a divalent aromatic radical and D1 is a divalent organic radical, and carbonate units of formula (2)
- wherein at least 60% of the total number of D2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals;
- a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3)
- wherein each occurrence of R3 is independently C1-C12 hydrocarbyl, and the second copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and
- a transesterification catalyst
- wherein the combination and the reaction conditions are selected such that the reaction product as formed by the method has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
6 more elements
A reaction product of a mixture comprising
- a polyester polycarbonate copolymer, comprising ester units of the formula:
- wherein the molar ratio of isophthalate ester units g to terephthalate ester units h is 99:1 to 1:99, and carbonate units of the formula:
- wherein the molar ratio of ester units m to carbonate units p is about 99:1 to 1:99;
- a polysiloxane polycarbonate copolymer, comprising polysiloxane units of the formula:
- wherein D is 5 to 100, and the carbonate units of the formula:
- wherein the weight ratio of polysiloxane units x to carbonate units y is 1:99 to 30:70, and the polysiloxane polycarbonate copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and wherein the weight ratio of the polyester polycarbonate to the polysiloxane polycarbonate is 20:80 to 90:10;
- and
- 40 to 220 ppm of a transesterification catalyst,
- wherein the reaction product has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
7 more elements
A reaction product of a mixture comprising
- a polyester polycarbonate copolymer comprising a polyester unit of the formula:
- wherein the ratio of isophthalate units u to terephthalate units v is 99:1 to 1:99, first and second carbonate units of formulas:
- wherein the mol % r of the polyester unit is 10 to 70%, the mol % s of the first polycarbonate unit is 10 to 90%, and the mole-% t of the second polycarbonate unit is 40 to 98%, wherein r+s+t=100%;
- a polysiloxane polycarbonate copolymer, comprising a polysiloxane unit of the formula
- wherein D is 5 to 100, and a carbonate unit of the formula:
- wherein the weight ratio of polysiloxane unit x to polycarbonate unit y is 1:99 to 30:70, and the polysiloxane polycarbonate copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and wherein the weight ratio of the polyester polycarbonate to the polysiloxane polycarbonate is 1:99 to 99:1;
- and
- 40 to 220 ppm of a transesterification catalyst,
- wherein the reaction product has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
7 more elements
A reaction product formed by a method comprising reacting a combination, the combination comprising:
- a first copolymer comprising
- aromatic ester units of formula (1)
- wherein T is a divalent aromatic radical and D1 is a divalent organic radical, and carbonate units of formula (2)
- wherein at least 60% of the total number of D2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals;
- a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3)
- wherein each occurrence of R3 is independently C1-C12 hydrocarbyl, and the second copolymer has ahaze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and
- a transesterification catalyst, wherein the combination and the reaction conditions are selected such that the reaction product as formed by the method has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
5 more elements
A reaction product formed by a method comprising reacting a combination, the combination consisting essentially of:
- a first copolymer comprising
- aromatic ester units of formula (1)
- wherein T is a divalent aromatic radical and D1 is a divalent organic radical, and carbonate units of formula (2)
- wherein at least 60% of the total number of D2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals;
- a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3)
- wherein each occurrence of R3 is independently C1-C12 hydrocarbyl, and the second copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and
- a transesterification catalyst, wherein the wherein the type and amount of the first copolymer, second copolymer, transesterification catalyst and the reaction conditions are selected such that the reaction product as formed by the method has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
5 more elements
A reaction product formed by a method comprising reacting a combination, the combination consisting of:
- a first copolymer comprising
- aromatic ester units of formula (1)
- wherein T is a divalent aromatic radical and D1 is a divalent organic radical, and carbonate units of formula (2)
- wherein at least 60% of the total number of D2 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic, alicyclic, or aromatic radicals;
- a second copolymer comprising carbonate units of formula (2) and repeating siloxane units of formula (3)
- wherein each occurrence of R3 is independently C1-C12 hydrocarbyl, and the second copolymer has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters;
- and
- a transesterification catalyst, wherein the wherein the type and amount of the first copolymer, second copolymer, transesterification catalyst and the reaction conditions are selected such that the reaction product as formed by the method has a haze of less than or equal to 30%, measured according to ASTM D1003-00 at a thickness of 3.2 millimeters.
5 more elements
Dependencies are inferred from the claim text.