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Amorphous copolyester and application thereof

A copolyester and amorphous technology, applied in the field of amorphous copolyester and its application, can solve the problems affecting mechanical and processing properties, brittleness, etc., and achieve the effect of preventing the glass transition temperature from falling

Inactive Publication Date: 2008-07-02
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter is brittle due to the introduction of IPA, which affects its mechanical and processing properties

Method used

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  • Amorphous copolyester and application thereof
  • Amorphous copolyester and application thereof
  • Amorphous copolyester and application thereof

Examples

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no. 1 example

[0024] The amorphous copolyester of the first embodiment is synthesized by a kind of diacid monomer and two kinds of diol monomers, and its structural formula is as shown in formula (1):

[0025]

[0026] Among them, the diacid monomer includes terephthalic acid (abbreviated as TPA), and the diol monomer includes ethylene glycol (abbreviated as EG) and 1,3 / 1,4-cyclohexanedi Methanol (1,3 / 1,4-cyclohexanedimethanol, abbreviated as 1,3 / 1,4-CHDM), wherein the amount of 1,3 / 1,4-cyclohexanedimethanol added is 20 to 100 equivalents of diol mole %. In addition, the above-mentioned diacid monomers and diol monomers generally need to be synthesized through two-stage esterification and polycondensation, and a polycondensation catalyst needs to be added during the reaction process, and the content thereof varies from about 25 to 500 ppm. The polycondensation catalyst used here is, for example, one or more metal catalysts selected from antimony series, titanium series, germanium series...

no. 2 example

[0041] The amorphous copolyester of the second embodiment is synthesized by two kinds of diacid monomers and two kinds of diol monomers, and its structural formula is as shown in formula (2):

[0042]

[0043]Among them, diacid monomers include terephthalic acid (TPA) and 5-tert-butylisophthalic acid (5tBIA), diol monomers include ethylene glycol (EG) and 1,3 / 1,4-cyclohexane Alkanedimethanol (1,3 / 1,4-CHDM), wherein the addition of 5tBIA in diacid equivalent and the addition of 1,3 / 1,4-cyclohexanedimethanol in diol equivalent It is 20-100 mol%, and if the above-mentioned diacid monomer and diol monomer are synthesized through two-stage esterification and polycondensation, a polycondensation catalyst needs to be added during the reaction process, and its content is about 25-500ppm. The polycondensation catalyst used here is, for example, one or more metal catalysts selected from antimony series, titanium series, germanium series, tin series, gallium series, aluminum series an...

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Abstract

An amorphous copolyester is synthesized by diacid monomer and glycol monomer. The amorphous copolyester comprises a structure that is shown in Formula (1), wherein, the diacid monomer comprises TPA and the glycol monomer comprises EG. In addition, the glycol monomer also comprises 1, 3 / 1, 4-CHDM. When the adding amount of the 1, 3 / 1, 4-CHDM is 20-100molar percent of the glycol monomer, the amorphous copolyester is then obtained.

Description

technical field [0001] The present invention relates to an amorphous copolyester (amorphous copolyester) and its application, more particularly, the present invention relates to an amorphous copolyester with a rather wide amorphous region and its application. Background technique [0002] Polyethylene terephthalate (PET) is a thermoplastic polyester engineering plastic that is esterified and polymerized from diacid and diol. This material is widely used in many industries because of its wide range of mechanical and electrical properties, strong gas barrier force, good light transmission, hardness, easy processing, and low price. However, because of its regular molecular structure, it is easy to pile up to form a crystal structure, which in turn affects its light transmission, impact resistance and dyeability. Therefore, the application research of amorphous copolyester can be seen everywhere in many high-value industries. [0003] At present, most amorphous copolyesters ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/16C08G63/85C08J5/18
Inventor 范正欣蔡育勋洪启源
Owner IND TECH RES INST
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