Special optical polyester synthesis catalyst and preparation method and application thereof

A catalyst and co-catalyst technology, which is applied in the field of special catalysts for optical polyester synthesis, can solve problems such as unsatisfactory polycondensation activity, and achieve the effects of easier control of product quality stability, improved environmental friendliness, and reduced usage
CN105860045AActive Publication Date: 2016-08-17HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
Publication Date
2016-08-17

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Abstract

The invention discloses a special optical polyester synthesis catalyst. The special optical polyester synthesis catalyst is formed by gamma-A100H and a catalyst promoter by mass of 1:10-9:10 and is a combination of one or multiple of ethylene glycol antimony, antimonous oxide, antimony acetate, tetrabutyl titanate and germanium dioxide. The invention further discloses a preparation method and application of the catalyst. Polyester synthesized by the obtained special optical polyester synthesis catalyst is good in optical performance, low in diethylene glycol and carboxyl-terminated content and applicable to manufacture of optical polyester films.
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Description

technical field

[0001] The invention relates to the technical field of optical polyester synthesis, in particular to a special catalyst for optical polyester synthesis, its preparation method and application. Background technique

[0002] Optical polyester film represented by BOPET is the basic raw material for various optical functional films, optical tapes, optical labels and other high-end products used in the production of liquid crystal displays, and has very strict production technology requirements. In the traditional polyester synthesis process for optical BOPET, a single antimony-based catalyst is generally used. Although the catalyst has excellent catalytic efficiency, the antimony-based catalyst is easily reduced to simple antimony during the reaction process, making the product grayish in color. Optical performance degrades.

[0003] In addition, although titanium-based, zirconium-based, aluminum-based and tin-based catalysts have been widely studied and tried t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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