公开(公告)号：US20130225763A1

公开(公告)日：2013-08-29

申请号：US13781008

申请日：2013-02-28

Applicant: SABIC INNOVATIVE PLASTICS IP B.V.

Inventor： Vandita Pai-Paranjape ,  Franklin J. Ehrensbeck ,  James Franklin Hoover

IPC: C08G64/04

CPC classification number: C08G64/04 ,  C08G64/14 ,  C08G64/24

Abstract: Processes for preparing high purity polycarbonates having high light transmission, low yellowness, and color stability are disclosed herein. High purity starting ingredients are used to form a polycarbonate powder. The polycarbonate powder can be subsequently melt extruded at an optimum shear rate to minimize yellowness and the need to add colorant to overcome the yellowness. The lower amount of colorant increases the light transmission of the resulting polycarbonate resin.

Abstract translation: 本文公开了制备高透光性，低黄度和颜色稳定性的高纯度聚碳酸酯的方法。 高纯度起始成分用于形成聚碳酸酯粉末。 聚碳酸酯粉末随后可以以最佳剪切速率熔融挤出以使黄色最小化，并且需要添加着色剂以克服黄色。 较低量的着色剂增加了所得聚碳酸酯树脂的透光性。

公开(公告)号：US09403939B2

公开(公告)日：2016-08-02

申请号：US13781008

申请日：2013-02-28

Applicant: SABIC INNOVATIVE PLASTICS IP B.V.

Inventor： Vandita Pai-Paranjape ,  Franklin J. Ehrensbeck ,  James Franklin Hoover

IPC: C08G64/16 ,  C08G64/00 ,  C08G64/04 ,  C08G64/24 ,  C08G64/14

CPC classification number: C08G64/04 ,  C08G64/14 ,  C08G64/24

Abstract: Processes for preparing high purity polycarbonates having high light transmission, low yellowness, and color stability are disclosed herein. High purity starting ingredients are used to form a polycarbonate powder. The polycarbonate powder can be subsequently melt extruded at an optimum shear rate to minimize yellowness and the need to add colorant to overcome the yellowness. The lower amount of colorant increases the light transmission of the resulting polycarbonate resin.

Abstract translation: 本文公开了制备高透光性，低黄度和颜色稳定性的高纯度聚碳酸酯的方法。 高纯度起始成分用于形成聚碳酸酯粉末。 聚碳酸酯粉末随后可以以最佳剪切速率熔融挤出以使黄色最小化，并且需要添加着色剂以克服黄色。 较低量的着色剂增加了所得聚碳酸酯树脂的透光性。