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Polyester resin composition

A technology of resin composition and polyester resin, which is applied in the field of resin composition containing aliphatic polyester resin, can solve the problems of incinerator damage, difficulty in decomposition, generation of harmful gas, etc., and prevent rupture and bag rupture , Excellent impact strength

Active Publication Date: 2013-10-02
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these resins have the following problems: they are difficult to decompose in the natural environment, and when they are incinerated, harmful gases are generated or the incinerator is damaged.

Method used

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  • Polyester resin composition
  • Polyester resin composition
  • Polyester resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0146] The present invention will be described in further detail below with reference to Examples and Comparative Examples. It should be noted that the following examples are shown to describe the present invention in detail, and the present invention is not limited to the following examples as long as the gist of the present invention is not violated.

[0147]

[0148] Determination of MFR value

[0149] Based on JIS K7210 (1990), the MFR value was measured at 190°C under a load of 2.16 kg using a melt flow index meter.

[0150] · 1 Measurement of H-NMR

[0151] 1 In the measurement of H-NMR, about 30 mg of a sample was weighed into an NMR sample tube with an outer diameter of 5 mm, added to 0.75 mL of deuterated chloroform to dissolve, and then measured at room temperature using an AVANCE400 spectrometer manufactured by Bruker Co., Ltd. 1 H-NMR spectrum. Chemical shifts are based on tetramethylsilane (TMS) at 0.00 ppm.

[0152] · Determination of melting point

[0153...

manufacture example 1

[0155] [Preparation of catalyst for polycondensation]

[0156] 100 parts by weight of magnesium acetate tetrahydrate was added to a glass eggplant-shaped flask equipped with a stirring device, and 400 parts by weight of absolute ethanol (purity of 99% by weight or more) was further added. Further, 65.3 parts by weight of ethyl acid phosphate (the mixing weight ratio of the monoester body and the diester body is 45:55) was added and stirred at 23°C. After 15 minutes, it was confirmed that magnesium acetate was completely dissolved, and then 122.2 parts by weight of tetra-n-butyl titanate was added. Stirring was further continued for 10 minutes to obtain a homogeneous mixed solution. The mixed solution was transferred to an eggplant-shaped flask, and concentrated under reduced pressure with an evaporator in an oil bath at 60°C. After 1 hour, the ethanol was almost distilled off, leaving a translucent viscous liquid. The temperature of the oil bath was further raised to 80°C, ...

manufacture example 2

[0162] 100 parts by weight of succinic acid, 32.2 parts by weight of adipic acid, and 111 parts by weight of 1,4-butanediol as raw materials were put into a reaction vessel equipped with a stirring device, a nitrogen gas inlet, a heating device, a thermometer, and a decompression vent. parts by weight, 0.31 parts by weight of DL malic acid, and 7.0 parts by weight of a 90% DL lactic acid aqueous solution in which 1% by weight of germanium oxide was dissolved in advance. Nitrogen gas was introduced while stirring the contents of the container, and the reaction was started from 120° C. in a nitrogen atmosphere, and the temperature was raised to 200° C. over 1 hour and 40 minutes. Next, the pressure was reduced to 1 mmHg (133 Pa) while the temperature was raised to 230° C. over 1 hour and 25 minutes, and polymerized at 230° C. and 1 mmHg (133 Pa) for 4 hours to obtain a polyester resin. Hereinafter, this polyester resin may be referred to as resin 2.

[0163] The melting point o...

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Abstract

The purpose of the invention is to provide a resin composition which has a high tear strength and also a high impact strength when formed into a film. The invention relates to a polyester resin composition comprising a polyester resin (A) containing a succinic acid unit in an amount of 5-86 mol% of all of the aliphatic dicarboxylic acid units, a polyester resin (B) containing an aromatic dicarboxylic acid unit in an amount of 5-95 mol% of all of the dicarboxylic acid units, and a polyester resin (C) containing an aliphatic oxycarboxylic acid, wherein the polyester resin (A) is contained in an amount of 10-89 wt% and the polyester resin (B) is contained in an amount of 11-90 wt% with respect to the total amount of the polyester resin (A) and the polyester resin (B), and the polyester resin (C); is contained in an amount of 1-40 wt% with respect to the total amount of the polyester resin (A), the polyester resin (B), and the polyester resin (C).

Description

technical field [0001] The present invention relates to an aliphatic polyester-based resin-containing resin composition capable of providing a film having excellent mechanical properties. Background technique [0002] In the past, paper, plastic film, metal foil, etc. have been used in various food, chemicals, miscellaneous goods, etc. for packaging liquid, powder, and solid materials, agricultural materials, construction materials, etc. Wide range of uses. In particular, plastic films are excellent in strength, water resistance, moldability, transparency, cost, and the like, and are used in many applications in the form of bags and containers. As a representative plastic film, for example, there is a plastic film composed of polyethylene, polypropylene, polystyrene, polyvinyl chloride, and the like. However, these resins have problems such as being difficult to decompose in the natural environment, and generating harmful gas or damaging the incinerator when incinerated. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/00C08K5/00C08L67/04
CPCC08L2205/03Y10T428/1345Y10T428/1352C08L67/02C08L67/04C08L91/06
Inventor 中野博金子裕之三轮雅申楠野笃志
Owner MITSUBISHI RAYON CO LTD