Biodegradable polyester resin composition

A polyester resin, biodegradable technology, applied in the direction of fabrics, textiles, etc., can solve the problem of no lubricant found, can not obtain antistatic properties, etc., to achieve the effect of excellent antistatic properties and surface lubricity

Active Publication Date: 2008-01-09
TOHO CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In this way, many studies have been carried out on the mixing method of nonionic surfactants with respect to biodegradable resins, but in fact, due to the unique crystallinity of biodegradable polyester resins and the compatibility of resins and surfactants Balanced, satisfiable antistatic properties cannot be obtained when using nonionic surfactants, so further improvement is required
In addition, moldings such as films and sheets obtained by processing resins should have lubricity on the surface during the production process, but no suitable lubricants have been found in this regard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0080] [Example A] Examples of reactants of higher fatty acid esters of polyols and boric acid

[0081] Synthesis of Surfactant a

[0082] 1.0 mol of glycerin and 1.0 mol of lauric acid were added to a glass autoclave, the temperature was raised to 220-250°C in the presence of 0.3% by weight of potassium hydroxide while introducing N2 gas, and esterification was carried out for 5 hours to synthesize glycerol monolauric acid Esters (Esters higher than diesters are also included as by-products. The same applies in the following cases). Next, 1.0 mole of boric acid was added to 1.0 mole of synthesized glycerol monolaurate, slowly heated to 130-135°C for dehydration, and then slowly raised to 230°C to synthesize target glycerol monolaurate and boric acid. Reactant (as surfactant a). The prepared surfactant a was used for the evaluation of Examples and Comparative Examples described later.

[0083] Synthesis of Surfactants b~e

[0084] Using the same synthesis method as...

Embodiment 1～10

[0092] With respect to 100 parts by weight of the biodegradable polyester resin, the above-mentioned surfactants a to f of the present invention were added at the contents shown in Table 2, and a mixing tester (laboplast mill) and a roll mixer (( Co., Ltd. Toyo Seiki Seisakusho Co., Ltd.) was melted and mixed at 200° C., and the mixed resin was molded into a sheet with a thickness of 2 mm, a length of 100 mm, and a width of 100 mm using a press machine. The sheet was left to stand for 14 days under constant temperature and humidity conditions at a temperature of 23° C. and a relative humidity of 50%, and then evaluated for molecular weight retention, antistatic properties, and transparency. The results are shown in Table 2 as Examples 1-10.

[0093] Biodegradable polyester-based resin, polylactic acid (Leisia H-100: sold by Mitsui Chemicals Co., Ltd.) was used in Examples 1 to 8, and polylactic acid (Leisia H-100) was used in Examples 9 and 10 / Succinate-based polyester (...

Embodiment B

[0116] [Example B] Examples of reactants of boric acid esters of polyhydric alcohols and higher fatty acids

[0117] Synthesis of Surfactant h

[0118] Add 1.0 mol of diglycerin and 1.0 mol of boric acid to a glass autoclave, and introduce N 2 The temperature of the gas was raised to 220-250°C, and esterification was carried out for 5 hours to synthesize glycerol borate. Next, 1.0 mole of oleic acid was added to 1.0 mole of the synthesized glycerol borate, and N 2 Gas was heated up to 220-250° C. in the presence of 0.3% by weight of potassium hydroxide, esterified for 5 hours, and the target diglycerol borate oleate (as surfactant h. Also contained as by-product di An ester of more than an ester. Hereinafter, the same applies in the same case). The obtained surfactant h was used for evaluation of Examples and Comparative Examples described later.

[0119] Synthesis of surfactants i, j

[0120] Using the same synthesis method as surfactant h, boric acid ester...

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Abstract

The present invention provides a biodegradable polyester resin composition which can exert excellent antistatic property and surface lubricity while maintaining the molecular weight without harming the external appearance of the resin even if an interfusing method is adopted. The biodegradable polyester resin composition of the invention includes 0.05 to 10.0% by weight of a boric acid ester surfactant having one or more than two hydrophobic groups which comprises 8 to 24 carbon atoms, the boric acid ester surfactant is the reactant which is formed by the boric acid and the compound that is formed by esterifying the higher fatty acid used by the polyalcohol or the salt of the reactant, or the substance which is gained by reacting the higher fatty acid and the compound that is formed by esterifying the boric acid used by the polyalcohol.

Description

technical field [0001] The present invention relates to a biodegradable polyester-based resin composition imparting excellent performance such as antistatic properties, and in particular to a polylactic acid-based resin composition that is a renewable resource derived from plants. Background technique [0002] Plastics such as polypropylene, polyethylene, and polyvinyl chloride, which are made from fossil resources such as petroleum, are very important materials that are essential to our lives and are manufactured in the form of food packaging films, electrical and chemical products, and industrial equipment. However, since such plastics are not biodegradable, they continue to remain in nature semi-permanently after they become unnecessary, and it is a well-known fact that they have a great impact on the ecosystem and cause environmental damage in various aspects. [0003] Under such circumstances, biodegradable polyester resins are attracting attention. Among them, those th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08K5/55C08J9/04
CPCC08K5/55Y10T442/601C08L67/04C08L33/04C08L85/04C08L101/16
Inventor 秋本干夫五位野昌也长泽和之柿田泰宏
Owner TOHO CHEM IND
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