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Polyestercarbonates and methods of manufacture

一种聚酯碳酸酯、碳酸二酯的技术，应用在聚酯碳酸酯领域，能够解决数据不准确、扭曲、可靠性降低等问题

Inactive Publication Date: 2005-10-05
SABIC INNOVATIVE PLASTICS IP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that excessive moisture absorption by a disk can cause skewing of the disk or the film forming the disk, resulting in reduced reliability
This distortion (hereafter referred to as dimensional stability) will result in inaccurate data stored or read with the laser beam

Method used

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  • Polyestercarbonates and methods of manufacture
  • Polyestercarbonates and methods of manufacture
  • Polyestercarbonates and methods of manufacture

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0084] In the preparation of polyester carbonates, the above-mentioned aromatic dihydroxy compound comonomers may be used alone, or as a mixture of two or more different aromatic dihydroxy compound comonomers. In a particular embodiment, a suitable aromatic dihydroxy compound comonomer for the preparation of polyester carbonates is 2,2-bis(4-hydroxyphenyl)propane (commonly known as bisphenol A or "BPA") ), resorcinol, 4,4′-(1-(1-decylene)-diphenol (hereinafter sometimes referred to as “bispded”) and 2,2-bis(3-sec-butyl-4 -Hydroxyphenyl)propane (hereinafter sometimes also referred to as "s-BPA"), or a mixture containing at least one of the aforementioned aromatic dihydroxy compounds.

[0085] In certain embodiments, polyester carbonates are prepared from dicarboxylic acid diesters selected from the following formula (X),

[0086]

[0087] where Y is the formula (CH 2 ) n wherein n has a value in the range of about 4 to about 18, and R' is phenyl. In a specific embodiment...

Embodiment 1-2

[0125] Embodiment 1-2, comparative example 1-3

[0126] Polyester carbonates were prepared using the general polymerization method described above. For each polyester carbonate prepared, glass transition temperature, molecular weight and swelling data were measured using the general method described above. The results are shown in Table 1 below. All reactions were performed using a molar ratio of 1.08 of diphenyl carbonate to a mixture of X, aromatic dihydroxy compound comonomer, and dicarboxylic acid diester. The catalyst used was a mixture of sodium hydroxide and tetramethylammonium hydroxide each in a molar ratio of 1:100. In each case, 2.5 x 10 -4 moles of tetramethylammonium hydroxide. Comparative Example 1 refers to BPA homopolycarbonate prepared by the general method described above using BPA and diphenyl carbonate. Comparative Example 2 refers to monomer 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane and 4,4'-(m-phenylene) in a molar ratio of 45:55 A polycar...

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Abstract

Polyestercarbonates are disclosed which comprise structural units derived from at least one bisphenol derived from terpene precursors, at least one aromatic dihydroxy compound comonomer, at least one diester derived from a C1-C40 linear or branched divalent hydrocarbyl radical, and at least one carbonic acid diester. Also disclosed are methods to make the polyestercarbonates and articles derived therefrom.

Description

Background of the invention [0001] This invention relates to polyester carbonates, and more particularly to polyester carbonates based on bisphenols derived from cyclic monoterpene precursors as a building block. The present invention also relates to a process for the melt transesterification polymerization of polyester carbonates, and a process for preparing such polyester carbonate articles. [0002] Polycarbonate homopolymers are widely used in various fields due to their excellent physical properties, such as impact resistance, mechanical properties, and transparency, among others. Bisphenol A (BPA) polycarbonate, an industry benchmark material, has been chosen as a lining for optical data storage media such as compact discs (CDs) and digital video discs (DVDs) due to its low cost, high transparency and good mechanical properties. end. However, the need to store large amounts of information on a single disc has led to new technologies based on high-density data storage w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/64
CPCC08G63/64C08G64/307C08G64/045
Inventor 维拉拉哈万·斯里尼瓦桑赖因·M·费伯詹·P·伦斯
Owner SABIC INNOVATIVE PLASTICS IP BV
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