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Polyester resin composition, preparation method thereof, polyester film and solar cell power generation module

A technology of polyester resin and composition, applied in the fields of polyester film and solar cell power generation components, can solve the problems of not achieving hydrolysis resistance, reducing concentration, and reducing polymerization rate, etc.

Inactive Publication Date: 2011-12-28
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, since conventional polyesters generally have a relatively high IV from the viewpoint of maintaining the molecular weight up to a certain level, studies in the region of lowering the IV have not been widely conducted.
For this reason, in the conventional techniques described above, although a relatively high IV can be obtained, the concentration of terminal carboxyl groups in the polyester is not substantially lowered, and as a result, a large improvement in hydrolysis resistance is not achieved.
[0013] On the other hand, it is known that when the IV of the polyester resin is too high, the polymerization rate becomes low, and due to the IV becoming high, the polyester resin tends to be decomposed and failure due to impurities tends to occur

Method used

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  • Polyester resin composition, preparation method thereof, polyester film and solar cell power generation module
  • Polyester resin composition, preparation method thereof, polyester film and solar cell power generation module
  • Polyester resin composition, preparation method thereof, polyester film and solar cell power generation module

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preparation example Construction

[0133] The production method of the present invention includes step (A) and step (B), and uses a titanium compound, a phosphorus compound, and a magnesium compound as a specific metal compound, so that it is possible to obtain a polyester resin composition containing a titanium atom (Ti ), a magnesium atom (Mg) and a phosphorus atom (P), wherein the value Z calculated by the following formula (i) satisfies the following formula (ii).

[0134] (i) Z=5×(P content [ppm] / P atomic weight)-2×(Mg content [ppm] / Mg atomic weight)-4×(Ti content [ppm] / Ti atomic weight)

[0135] (ii) 0≤Z≤+5.0

[0136] Such a polyester resin composition satisfies 0≦Z≦+5.0, so the three elements of Ti, P and Mg are properly balanced. Thereby, excellent color tone and heat resistance (reduced yellow coloration at high temperature) can be obtained, and high electrostatic applicability can be maintained while maintaining polymerization reactivity. Furthermore, in the present invention, a less yellowish polye...

Embodiment 1

[0321] 1. Preparation of polyester resin composition

[0322] step 1)

[0323] Step (A)

[0324] 4.7 tons of high purity terephthalic acid and 1.8 tons of ethylene glycol were mixed for 90 minutes to form a slurry. The slurry was continuously supplied to the first esterification reactor at a flow rate of 3800 kg / hour. In addition, an ethylene glycol solution of a citric acid chelated titanium complex (VERTEC AC-420 (trade name), manufactured by Johnson Matthey Corp.) having citric acid coordinated to Ti metal was continuously supplied. The reaction was carried out while stirring at a temperature in the reactor of 250° C. and an average holding time of about 4.3 hours. The citric acid chelated titanium complex was continuously added so that the amount of the Ti complex added was 9 ppm as Ti element. The oligomer obtained in this case had an acid value of 600 eq / ton.

[0325] The resulting reaction mixture was transferred to a second esterification reaction tank, and the re...

Embodiment 2 to 4 and comparative example 1 to 3

[0450] Except for changing the specific surface area of ​​the PET pellet as shown in Table 1 below, the PET pellet and the polyester resin composition and the polyester film were prepared, measured and evaluated in the same manner as in Example 1. The measurement and evaluation results are shown in Table 1 below.

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Abstract

The present invention provides a polyester resin composition including: a polyester resin; and a titanium compound derived from a catalyst; and the composition satisfying a relationship represented by the following Formula (1): 500 m2 / m3≰specific surface area of polyester resin≰2000 m2 / m3  Formula (1)

Description

Background technique [0001] Polyester resins are widely used in various fields due to their mechanical properties, heat resistance and electrical properties. For example, films prepared by using polyester resins are suitable for outdoor uses such as solar cell power generation modules, lighting films, or agricultural sheets. In these application modes, the film is required to have high weather resistance, since it is placed in an environment where it is constantly exposed to wind and rain. [0002] Particularly in recent years, photovoltaic power generation that converts sunlight into electric power has attracted attention from the viewpoint of protecting the global environment. A solar cell module for photovoltaic power generation has a structure including (sealing material), a solar cell device, a sealing material, and a backsheet stacked in this order on a glass substrate through which sunlight enters. . [0003] Solar cell power generation modules are required to have h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/189C08G63/85C08K5/521C08L67/02H01L31/04
CPCH01L31/0487Y02E10/52C08K3/10C08J2367/02C08K2003/321C08G63/85C08J5/18H01L31/0481C08K2003/2241H01L31/049Y02E10/50
Inventor 竹上龙太
Owner FUJIFILM CORP