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Dendritic polyester, method for producing the same, and thermoplastic resin composition

A technology of dendritic polyester and thermoplastic resin, which is applied in the field of dendritic polyester, can solve problems such as inability to obtain performance and insufficient thermal stability, and achieve improved thin-wall fluidity, excellent shear response, and anisotropy small effect

Active Publication Date: 2009-04-22
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In Patent Documents 5 and 6, dendrimers having heteroatoms as branch points have been studied, but when they have heteroatom branch points, thermal stability is insufficient and sufficient performance cannot be obtained.

Method used

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  • Dendritic polyester, method for producing the same, and thermoplastic resin composition
  • Dendritic polyester, method for producing the same, and thermoplastic resin composition
  • Dendritic polyester, method for producing the same, and thermoplastic resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Add 66.3g (0.48 mol) of p-hydroxybenzoic acid, 8.38g (0.045 mol) of 4,4'-dihydroxybiphenyl, 7.48g (0.045 mol) of terephthalic acid moles), 14.41 g (0.075 moles) of polyethylene terephthalate with an intrinsic viscosity of about 0.6 dl / g, and 62.48 g (1.00 equivalents of the total phenolic hydroxyl groups) of acetic anhydride were stirred under a nitrogen atmosphere while stirring Reaction at 145°C for 2 hours. Then add trimesic acid 31.52g (0.15 moles), heat up to 260°C, stir for 3 hours, after 91% of the theoretical distilled amount of acetic acid is distilled, stop heating and stirring, and the contents are spit out into cold water.

[0153] The obtained dendritic polyester (A-1) is carried out nuclear magnetic resonance spectrum analysis, the result is relative to trimesic acid residue, the content p of p-oxybenzoate (p-dioxybenzoate) unit is 2.66, 4, The content q of the 4'-dioxybiphenyl unit and the ethylene oxide unit was 0.66, the content r of the terephthalate ...

Embodiment 2

[0168] The raw material monomers were changed to 58.01g (0.42 moles) of p-hydroxybenzoic acid, 23.46g (0.126 moles) of 4,4'-dihydroxybiphenyl, 5.95g (0.054 moles) of hydroquinone, and 19.44g (0.117 moles) of terephthalic acid moles), isophthalic acid (0.063 moles), acetic anhydride 79.63g (1.00 equivalents of phenolic hydroxyl group total) and trimellitic acid 31.52g (0.15 moles), except that, operate in the same way as in Example 1 to obtain Dendritic polyester. The obtained dendritic polyester was evaluated in the same manner as in Example 1. The results are shown in Table 1 and Table 2.

Embodiment 3

[0170] The raw material monomers were changed to p-hydroxybenzoic acid 58.01g (0.42 mol), 4,4'-dihydroxybiphenyl 65.36g (0.351 mol), hydroquinone 5.95g (0.054 mol), terephthalic acid 19.44g (0.117 moles), isophthalic acid (0.063 moles), acetic anhydride 83.61g (1.05 equivalents of the total phenolic hydroxyl group) and trimesic acid 31.52g (0.15 moles), except that, operate in the same way as in Example 1 to obtain Dendritic polyester. The obtained dendritic polyester was evaluated in the same manner as in Example 1. The results are shown in Table 1 and Table 2.

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Abstract

Disclosed is a dendritic polyester containing at least one constituent unit selected from an aromatic oxycarbonyl unit (P), an aromatic and / or aliphatic dioxy unit (Q) and an aromatic dicarboxy unit (R), and a tri- or more-functional organic residue (B). In this dendritic polyester, the content of (B) relative to the total monomers constituting the dendritic polyester is within the range of 7.5-50 mol%. When this dendritic polyester is blended in a thermoplastic resin, the resin can be remarkably improved in thin-wall fluidity, rigidity, gas barrier properties and the like. Also disclosed is a thermoplastic resin composition containing such a dendritic polyester.

Description

technical field [0001] The present invention relates to a dendritic polyester, which has a plurality of stereoscopically controlled functional groups, and can impart improved thin-walled fluidity of the thermoplastic resin by compounding it in the thermoplastic resin, and can improve the gas barrier property and rigidity. Achieves effects such as thin wall and light weight. Background technique [0002] In recent years, the demand for higher performance of plastics has been increasing, and a large number of polymers with various new properties have been developed and used in the market. Among them, liquid crystalline resins such as optically anisotropic liquid crystalline polyesters characterized by parallel arrangement of molecular chains have attracted attention because they have excellent moldability and mechanical properties, and are being used mainly in electrical and electronic parts. The demand for injection molded products is expanding. [0003] However, when liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/60C08G63/06C08G63/127C08L67/00C08L67/02C08L67/04C08L77/00C08L101/00
CPCC08G63/605C08L67/00C08G83/005C08L101/005C08G63/914C08L63/00C08L77/00C08L2205/02C08L2666/18C08L2666/02C08G63/60C08G63/06C08G63/127
Inventor 立川浩司横江牧人滨口美都繁斋藤真希子松冈英夫山中亨
Owner TORAY IND INC
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