Patent ID: 11926733
Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polymer blend, comprising
5 to 95 weight percent of a poly(ester-carbonate-carbonate) comprising
40 to 95 mole percent of ester units comprising low heat bisphenol groups and high heat bisphenol groups, wherein the ester units comprise 20 to 80 mole percent of the low heat bisphenol groups and 20 to 80 mole percent of the high heat bisphenol groups, based on the total moles of ester units in the poly(ester-carbonate-carbonate), and
5 to 60 mole percent of carbonate units comprising the low heat bisphenol groups and the high heat bisphenol groups,
wherein the carbonate units comprise 20 to 80 mole percent of the low heat bisphenol groups and 20 to 80 mole percent of the high heat bisphenol groups, based on the total moles of carbonate units in the poly(ester-carbonate-carbonate); and

5 to 95 weight percent of a poly(etherimide), wherein
the weight percent of each polymer is based on the total weight of the polymers in the blend, and
a molded 0.125-inch thick ASTM tensile bar comprising the polymer blend has a haze value of less than 25% as determined according to ASTM D1003 using the color space CIE1931 with illuminant C and a 2° observer, and
wherein when the poly(ester-carbonate-carbonate) and the polyetherimide have a weight ratio of from 4:1 to 1:2, a multiplication product of the mole percent of the ester units and the mole percent of the high heat bisphenol groups in the poly(ester-carbonate-carbonate) is greater than 2000, and
when the poly(ester-carbonate-carbonate) and the polyetherimide have a weight ratio of greater than 4:1 or less than 1:2, a multiplication product of the mole percent of the ester units and the mole percent of the high heat bisphenol groups in the poly(ester-carbonate-carbonate) is greater than or equal to 1800.