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Use of sulfonic acid as stabilizer in polycarbonate

A technology of polycarbonate and polycarbonate resin, applied in the field of thermoplastic compositions, which can solve the problems of yellowing mechanical properties, chemical resistance and weather resistance reduction of products

Active Publication Date: 2019-12-27
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If polycarbonate or its individual components degrade under these molding conditions, the article will turn yellow and its mechanical properties, chemical resistance and weather resistance may be reduced

Method used

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  • Use of sulfonic acid as stabilizer in polycarbonate
  • Use of sulfonic acid as stabilizer in polycarbonate
  • Use of sulfonic acid as stabilizer in polycarbonate

Examples

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Embodiment

[0097] The following examples are presented to provide those of ordinary skill in the art with a complete disclosure and description of how to make and evaluate the compounds, compositions, articles of manufacture, devices and / or methods claimed herein, and are intended to be purely exemplary and not intended to This disclosure is limited. Efforts have been made to ensure accuracy with respect to numbers (eg, amounts, temperature, etc.), but some errors and deviations should be accounted for. Unless indicated otherwise, parts are parts by weight, temperature is in °C or is at ambient temperature, and pressure is at or near atmospheric. Percentages referring to compositions are expressed in wt% unless otherwise stated.

[0098] There are many variations and combinations of reaction conditions, such as component concentrations, desired solvents, solvent mixtures, temperatures, pressures and other reaction ranges and conditions, which can be used to optimize the product purity a...

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Abstract

A composition includes a polycarbonate resin formed via an interfacial polymerization process and from 0.05 ppm to 50 ppm of a sulfonic acid. A molded article formed from the composition may exhibit ayellowness index that is less than that of a reference molded article formed from substantially similar polycarbonate composition comprising the polycarbonate resin but in the absence of the sulfonicacid. Methods for forming the molded article in accordance with the above are also described.

Description

technical field [0001] The present disclosure relates to thermoplastic compositions, and in particular, to thermoplastic compositions comprising a color stabilizing component that maintain desired physical properties after processing under elevated temperature conditions. Background technique [0002] Polycarbonate (PC) is used in various applications due to its good balance of properties, including moldability, impact and transparency. For some applications, especially exterior applications, additives can be introduced into polycarbonate to prevent or slow its degradation. Commonly used additives include ultraviolet (UV) stabilizers to improve the weatherability of polycarbonate when exposed to light containing UV radiation, heat stabilizers to increase the ability of polycarbonate to withstand excessive heat conditions, and acid stabilizers to reduce break down. Some additives are used to protect polycarbonate during processing. [0003] Typical molding conditions for m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/42
CPCC08K5/42C08L69/00B29C45/72B29C45/0001B29K2069/00C08G64/14C08L2201/08C08L2205/025C08L2205/03
Inventor 塔玛拉·马里杰克·埃根赫伊森罗兰·塞巴斯蒂安·阿辛克三井和彦罗伯特·迪尔克·范·德·格兰佩尔马克·范·德·梅
Owner SABIC GLOBAL TECH BV