JP2005263996A - Noncrystalline polyester resin composition and molded product thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a noncrystalline polyester resin composition having a well-balanced combination of impact resistance and processability. <P>SOLUTION: The noncrystalline polyester resin composition comprises (A) 99-50 pts.mass of a noncrystalline polyester resin, (B) 1-50 pts.mass of a graft copolymer that is obtained by graft copolymerization of one or more vinyl monomers to an acrylic rubber and/or a silicone acrylic rubber and (C) 0.2-5 pts.mass of montanoic ester wax based on a total of 100 pts. mass of the components(A) and (B). A molded product of this resin composition is also provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a novel amorphous polyester resin composition and a molded article excellent in impact resistance, workability, weather resistance and design.

Amorphous polyester resins are excellent in transparency, mechanical properties, and gas barrier properties, and are widely used mainly for packaging materials such as bottles and sheets. However, due to the recent increase in size and complexity of containers, higher impact resistance and workability have been demanded.
Conventionally, many attempts have been made to improve impact resistance by adding a rubbery polymer and a rubber-containing polymer to an amorphous polyethylene terephthalate resin as means for improving the impact resistance of an amorphous polyester resin. In particular, it is known that a core-shell type graft polymer having a structure in which rubbery polymer particles are surrounded by a glassy polymer is effective in improving impact resistance.
In addition, as a means for improving the processability of an amorphous polyester resin, a polyester resin composition method in which a lubricant and / or a rubbery polymer is added to an amorphous polyethylene terephthalate resin has been proposed (for example, (See Patent Documents 1 and 2).

JP 2001-200166 A JP 2001-214044 A

  The above-mentioned known polyester-based composition shows an effect of improving one of impact resistance and workability, but does not have a good balance between the two properties. An object of the present invention is to develop an amorphous polyester resin composition that has a good balance of both impact resistance and processability.

  As a result of intensive studies to solve the above problems, the present inventors have added impact resistance and workability by adding a specific graft copolymer and a lubricant in the amorphous polyester resin composition. At the same time, it was found that satisfactory characteristics were obtained, and that weatherability and design were improved, and the present invention was made.

  That is, the present invention provides (A) 99-50 parts by mass of an amorphous polyester resin, (B) a graft obtained by graft polymerizing one or more vinyl monomers to acrylic rubber and / or silicone acrylic rubber. Novel amorphous polyester resin containing (C) 0.2 to 5 parts by mass of montanic acid ester wax with respect to 1 to 50 parts by mass of copolymer and 100 parts by mass of total amount of (A) and (B) The present invention provides a composition, and further provides various molded articles excellent in impact resistance, weather resistance, and design properties obtained by molding the amorphous polyester resin composition.

  The amorphous polyester resin composition of the present invention can provide a molded article having a good balance of workability and impact resistance and having excellent design properties. Therefore, the amorphous polyester resin composition of the present invention has high utility in a wide field as a molding material for sheets, wallpaper, surface decorative materials, containers and the like.

  The amorphous polyester resin (A) used in the present invention is a resin in which crystallinity is not substantially observed or is low and transparency is good, for example, 50 mol% or more is ethylene glycol. Mention may be made of homopolymers, copolymers or mixtures thereof obtained by condensation polymerization of a certain diol compound and dicarboxylic acids of which 50 mol% or more is terephthalic acid or an alkyl ester thereof. Examples of the copolymer include those obtained by copolymerizing other dicarboxylic acids such as isophthalic acid or halogenated terephthalic acid in a range of 50 mol% or less of the total carboxylic acids, (Alkylene glycol), specifically, a copolymer of diethylene glycol, or a copolymer of C3 to C12 alkylene glycol such as 1,4-cyclohexanedimethanol.

  Specifically, a copolyester obtained by copolymerization of a dicarboxylic acid component composed of terephthalic acid and a diol component composed of 30 mol% 1,4-cyclohexanedimethanol and 70 mol% ethylene glycol (trade name “PET 6676”). ) And a dicarboxylic acid component comprising terephthalic acid, a diol component comprising 30 mol% 1,4-cyclohexanedimethanol and 70 mol% ethylene glycol, and a very small amount of a third component copolymerized with a high melt viscosity. Polyester (trade name “Provista”) (all manufactured by Eastman Chemical Co.) is commercially available.

The rubber-like elastic body used for the graft copolymer (B) used in the present invention is a substantially amorphous copolymer resin such as acrylic rubber and silicone acrylic rubber.
Acrylic rubber uses a crosslinking agent using a monomer mainly composed of an alkyl or aryl group having 1 to 12 carbon atoms, preferably an alkyl acrylate or aryl acrylate having 4 to 8 carbon atoms, and preferably emulsified. If necessary, it can be prepared by using a graft crossing agent together by polymerization. The glass transition temperature of acrylic rubber is lower than normal temperature, and specific examples include butyl acrylate or 2-ethylhexyl acrylate homopolymer or copolymer. When the carbon number of the alkyl group and aryl group is within the above range, sufficient rubber elasticity can be obtained.

  The silicone acrylic rubber is a rubber containing a siloxane unit and a (meth) acrylate monomer unit, and a silicone / acrylic composite rubber composed of an organopolysiloxane and a polyalkyl (meth) acrylate is preferably used. The form of the silicone / acrylic composite rubber is such that both components are almost uniformly mixed and dispersed, the acrylic rubber is dispersed in a salami structure in the silicone, and the silicone and acrylic rubber are layered. These forms may be mixed.

When the composite rubber portion is manufactured in advance, any method manufactured by any method may be used, but the emulsion polymerization method is optimal. In carrying out this emulsion polymerization method, first, a latex of polyorganosiloxane is prepared, and then, a monomer for synthesizing alkyl (meth) acrylate is impregnated into particles of prepared polyorganosiloxane latex, It is preferable to take the procedure of polymerizing the monomer for synthesis.
Moreover, when preparing the latex part of the polyorganosiloxane contained in a composite rubber part previously, the method of preparing by emulsion polymerization using the organosiloxane and crosslinking agent of the raw material which are shown below can be used. In addition, a graft crossing agent can be used in combination at that time.

  Examples of the raw material organosiloxane include various cyclic compounds having three or more members. Preferably, it is prepared using a 3- to 6-membered cyclic compound as a raw material. Preferable examples of the 3- to 6-membered cyclic compound include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, trimethyltriphenylcyclotrisiloxane, and tetramethyltetraphenyl. Examples thereof include cyclotetrasiloxane and octaphenylcyclotetrasiloxane. These 3- to 6-membered cyclic compounds can be used alone or in admixture of two or more. The use amount ratio (content ratio) of these organosiloxanes in the entire latex part of the polyorganosiloxane is selected to be at least 50% by mass, preferably 70% by mass or more.

  A trifunctional or tetrafunctional silane-based crosslinking agent can be used as a crosslinking agent for preparing a polyorganosiloxane latex. Examples of suitable silane-based crosslinking agents include trimethoxymethylsilane, triethoxyphenylsilane, tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, and tetrabutoxysilane. In particular, tetrafunctional silane crosslinking agents are preferred, and tetraethoxysilane is particularly preferred among the tetrafunctional silane crosslinking agents exemplified herein. In general, a single cross-linking agent is often used, but two or more cross-linking agents may be mixed and used. The use amount ratio (content ratio) of the crosslinking agent in the whole polyorganosiloxane component is 0.1 to 30% by mass, more preferably 0.5 to 10% by mass, based on 100% by mass of the mixture of the organosiloxane and the crosslinking agent. % Range.

When the latex part of the polyorganosiloxane is prepared in advance, a graft crossing agent can be used in combination with the crosslinking agent. This graft crossing agent forms the origin of graft polymerization, and also has a role of cross-linking polyorganosiloxanes together with the cross-linking agent.
Of the (meth) acryloyloxysiloxanes, methacryloyloxysiloxane is more preferred.
Specific examples of suitable methacryloyloxysiloxane include β-methacryloyloxyethyldimethoxymethylsilane, γ-methacryloyloxypropylmethoxydimethylsilane, γ-methacryloyloxypropyldimethoxymethylsilane, γ-methacryloyloxypropyltrimethoxysilane, γ-methacryloyloxy Examples thereof include propylethoxydiethylsilane, γ-methacryloyloxypropyldiethoxymethylsilane, and γ-methacryloyloxybutyldiethoxymethylsilane.

On the other hand, polyalkyl (meth) acrylate which is the remaining component constituting the composite rubber portion can be synthesized using the following raw material alkyl (meth) acrylate, cross-linking agent and graft cross-linking agent.
Examples of the raw material alkyl (meth) acrylate include alkyl acrylates such as methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, and 2-ethylhexyl acrylate, and hexyl methacrylate, 2-ethylhexyl methacrylate, and n-lauryl methacrylate. And alkyl methacrylates such as Among the compounds exemplified here, n-butyl acrylate is preferably used as a raw material.

  Examples of the crosslinking agent that can be suitably used include ethylene glycol dimethacrylate, propylene glycol dimethacrylate, 1,3-butylene glycol dimethacrylate, 1,4-butylene glycol dimethacrylate, and the like. These cross-linking agents can be used alone or in combination of two or more.

Suitable graft crossing agents include compounds having a 2-propenyl (allyl) group structure in the molecule, such as allyl methacrylate, triallyl cyanurate, triallyl isocyanurate, and the like. Allyl methacrylate can also be used as a crosslinking agent. These graft crossing agents can be used alone or in combination of two or more.
In addition, the usage-amount ratio (content rate) of a crosslinking agent and the usage-amount ratio (content rate) of a graft crossing agent in the whole polyalkyl (meth) acrylate part are 0.1-20 mass% in total, More preferably Is preferably selected in the range of 0.5 to 15% by mass.

  As described above, the polymerization of the polyalkyl (meth) acrylate component contained in the composite rubber part is carried out by adding the raw material alkyl (meth) acrylate, the crosslinking agent and the grafting agent to the polyorganosiloxane latex particles prepared in advance. After adding and impregnating, it is preferable to carry out by using a normal radical polymerization initiator. More specifically, a polyorganosiloxane latex prepared in advance is neutralized by adding it to an aqueous alkali solution such as sodium hydroxide, potassium hydroxide, sodium carbonate, etc., and then the above-mentioned raw material alkyl (meth) acrylate, After adding a cross-linking agent and a graft crossing agent and impregnating the neutralized polyorganosiloxane particles, polymerization is carried out by applying a normal radical polymerization initiator. As the polymerization proceeds, a composite rubber in which the polyorganosiloxane component and the polyalkyl (meth) acrylate component are closely combined is obtained.

  When the silicone / acrylic graft copolymer used in the present invention is prepared, the main skeleton of the polyorganosiloxane component has a repeating unit of dimethylsiloxane as the composite rubber portion, and a polyalkyl (meta The main skeleton of the acrylate component is preferably a composite rubber having a repeating unit of n-butyl acrylate.

The composite rubber prepared by, for example, emulsion polymerization using the above-described configuration and preparation method can be graft-copolymerized with the above-described vinyl monomer using the graft-crossing agent and the structure derived from the graft-crossing agent. is there. Further, in the composite rubber part, the gel content measured by extraction with toluene at 90 ° C. for 4 hours is more preferably 80% by mass or more of the composite rubber part.
In the present invention, the graft copolymer (B) to be added is at least one monomer selected from the group consisting of an aromatic alkenyl compound, a methacrylic ester, an acrylic ester and a vinyl cyanide compound. Is a graft copolymer obtained by graft polymerization.

The vinyl monomer that can be used as the monomer for graft polymerization is selected from the group consisting of aromatic alkenyl compounds, methacrylic acid esters, acrylic acid esters, and vinyl cyanide compounds. Specifically, styrene, α -Aromatic alkenyl compounds such as methylstyrene and vinyltoluene, methacrylic acid esters such as methyl methacrylate and 2-ethylhexyl methacrylate, acrylic acid esters such as methyl acrylate, ethyl acrylate and n-butyl acrylate, cyan such as acrylonitrile and methacrylonitrile And vinyl chloride compounds. These monomers, in its molecular _structure, CH 2 = CH-, _{or, CH 2 = C (R)} - has a partial structure, it can be referred to as a vinyl monomer collectively. One kind of monomer selected from these monomers can be used, or two or more kinds of monomers can be used in combination. Among the monomers exemplified here, methyl methacrylate and butyl acrylate are preferable in view of compatibility with the matrix resin, and more preferably used in combination from the viewpoint of thermal stability during processing.

The graft copolymer (B) used in the present invention can be obtained by emulsion polymerization, suspension polymerization, solution polymerization or the like, but emulsion polymerization is preferred. The emulsion polymerization is produced by a known emulsification method and polymerization sequence.
The graft copolymer (B) is blended in an amount of 1 to 50 parts by mass (the total amount of (A) and (B) is 100 parts by mass) with respect to 99 to 50 parts by mass of the (A) amorphous polyester resin. . The preferred addition amount varies depending on the application and required physical properties, but when used for a resin sheet or the like, it is preferable to contain 3% or more as a rubber component in the amorphous polyester resin composition, and impact resistance at low temperatures When property is required, it is 5% or more, more preferably 10% or more. On the other hand, if the amorphous polyester resin composition contains 50 parts by mass or more of the graft copolymer (B), the original characteristics of the amorphous polyester resin may be impaired.

The (C) montanic acid ester wax of the present invention is one in which montanic acid is partially or entirely esterified with alcohol or the like. Specific examples include montanic acid ester waxes and montanic acid partially saponified ester waxes. Examples of the montanic acid ester wax include those commercially available from Clariant Japan under the trade names such as Licowax E, Licowax OP, and Licolub WE.
This (C) montanic acid ester wax is graft-polymerized with (A) 99-50 parts by mass of an amorphous polyester resin and (B) 1-50 parts by mass of a rubber-like elastic body. By adding an appropriate amount to 100 parts by mass of the total amount of 1 to 50 parts by mass of the graft copolymer obtained by this process, when adding processability, impact resistance, pigments, etc., the dispersibility of the pigment is also excellent. An amorphous polyester resin composition is obtained.

  (C) The amount of montanic acid ester wax added is in the range of 0.2 to 5 parts by mass with respect to 100 parts by mass in total of (A) amorphous polyester resin and (B) graft copolymer. To do. Among these, it is more preferable to add 0.3-2 mass parts. When the amount is less than 0.2 parts by mass, the workability is greatly deteriorated, for example, the releasability of the roll sheet is deteriorated. When an amount exceeding 5 parts by mass is added, the impact resistance is lowered, and even on the processed surface, although roll releasability is excellent, there is a possibility that the surface is likely to bleed out during processing.

  As the method for producing the resin composition of the present invention, the components (A) and (B) are separately produced in advance and then mixed using a conventional blending method such as a Henschel mixer, a tumbler, etc. A method of forming a resin composition by shaping with an apparatus used for usual shaping such as an extruder or a twin screw extruder Banbury mixer can be employed. In addition, antioxidants, heat stabilizers, light resistance improvers, ultraviolet absorbers, lubricants, plasticizers, mold release agents, antistatic agents, sliding agents used as usual additives in the resin composition of the present invention A property improver, a colorant and the like may be added.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, these are all illustrations and do not limit this invention. In the examples and comparative examples, various physical properties were evaluated according to the following methods. Moreover, unless otherwise indicated, a part and% represent a mass part and mass%.

1) Preparation of sheet and impact evaluation method For 100 parts of amorphous polyester resin (Easter 6863 manufactured by Eastman Kodak Company), 5-15 parts of graft copolymer and 0.1-5 of montanic acid ester wax After being partially blended, it is premixed and melt-kneaded with an 8-inch heating roll made by Kansai Roll to make a sheet of about 1 mm.
Three sheets of this sheet are laminated using a press machine, and a test piece having a thickness of 3.2 mm obtained by cutting is used to determine the impact strength at 23 ° C. and 0 ° C. according to ASTM D-256. Evaluate by

2) Processability evaluation method When kneading with a heating roll and processing the sheet, the ease of peeling from the roll and the surface state of the roll sheet after kneading for 3 minutes and 5 minutes were observed. Workability was evaluated according to the following evaluation criteria.
A: Excellent releasability after kneading for 5 minutes and good surface condition.
○: Excellent releasability after kneading for 3 minutes and good surface condition, but somewhat difficult to peel off after kneading for 5 minutes.
X: Hard to peel off from roll and workability is very poor.
(Triangle | delta): Although it is excellent in releasability, a lubricant exists in the spot form on the sheet | seat surface.

3) Measuring method of average particle diameter and particle diameter distribution The particle diameter of rubber latex was measured as follows. The obtained rubber latex was diluted with distilled water, 0.1 ml of diluted latex having a concentration of about 3% was used as a sample, a CHDF2000 type particle size distribution meter manufactured by MATEC USA, and a flow rate of 1.4 ml / min and a pressure of about 2.76 MPa. (Approximately 4000 psi) and temperature 35 ° C. In the measurement, a capillary cartridge for particle separation and a carrier liquid were used, and the liquidity was made almost neutral. Before the measurement, a standard curve was prepared by measuring a total of 12 particle diameters from 0.02 μm to 0.8 μm using monodispersed polystyrene with a known particle diameter manufactured by DUKE Co., USA as the standard particle size substance. .

[Reference Example 1] Production of acrylic rubber-based graft copolymer (B-1) To a separable flask equipped with a stirrer, 195 parts of distilled water and 0.1 part of sodium dodecylbenzenesulfonate were added, and the atmosphere was replaced with nitrogen. The temperature was raised to ° C. Then, a mixed liquid of 0.002 part of ferrous sulfate, 0.006 part of ethylenediaminetetraacetic acid disodium salt, 0.26 part of Rongalite and 5 parts of distilled water was added, and further 70 parts of n-butyl acrylate substituted with nitrogen, A mixture of 0.75 parts of allyl methacrylate and 0.4 parts of t-butyl hydroperoxide was added to initiate radical polymerization. Thereafter, the polymerization was completed by maintaining the liquid temperature at 70 ° C. for 2 hours to obtain a rubber latex. A part of this latex was sampled and the average particle size was measured and found to be 0.22 μm.

To this rubber latex, a mixed liquid of 0.06 part of t-butyl hydroperoxide, 29 parts of methyl methacrylate and 1 part of butyl acrylate was dropped at 70 ° C. over 15 minutes, and then kept at 70 ° C. for 4 hours. Graft polymerization to the latex was completed to obtain an acrylic graft copolymer (C-3) latex. A portion of this graft copolymer latex was sampled and the average particle size was measured and found to be 0.24 μm. The polymerization rate of methyl methacrylate was 98.2% with respect to the raw material methyl methacrylate.
The obtained graft copolymer latex is dropped into 200 parts of hot water of 1.5% calcium chloride, solidified, separated and washed, and then dried at 75 ° C. for 16 hours to obtain a powdery acrylic rubber graft copolymer. A polymer (B-1) was obtained.

[Reference Example 2] Production of acrylic rubber-based graft copolymer (B-2) The amount of raw materials used in Reference Example 1 was 84.15 parts of n-butyl acrylate, 0.85 parts of allyl methacrylate, and 13.5 parts of methyl methacrylate. An acrylic rubber-based graft copolymer (B-2) was obtained in the same manner except that the amount was changed to 0.5 part of ethyl acrylate.

[Reference Example 3] Production of silicone / acrylic composite rubber-based graft copolymer (B-3) 2 parts of tetraethoxysilane, 0.5 part of γ-methacryloyloxypropyldimethoxymethylsilane and 97.5 parts of octamethylcyclotetrasiloxane Were mixed to obtain 100 parts of a siloxane mixture. 100 parts of the siloxane mixture was added to 200 parts of distilled water in which 0.67 parts of sodium dodecylbenzenesulfonate and dodecylbenzenesulfonic acid were dissolved, and the mixture was pre-stirred at 10,000 rpm with a homomixer. Thereafter, the mixture was emulsified and dispersed with a homogenizer at a pressure of 200 kg / cm ² to obtain an organosiloxane latex. This mixed solution was transferred to a separable flask equipped with a condenser and a stirring blade, heated at 80 ° C. for 5 hours with mixing and stirring, and then allowed to stand at 20 ° C. After 48 hours, the solution was neutralized with an aqueous sodium hydroxide solution, and the pH of the latex was adjusted to 7.0 to complete the polymerization. Thus, a polyorganosiloxane latex (hereinafter referred to as PDMS-1) was obtained. It was. The polymerization rate of the obtained polyorganosiloxane was 89.1% with respect to the starting siloxane, and the average particle size of the polyorganosiloxane was 0.19 μm. The PDMS-1 was coagulated and dried with isopropanol to obtain a solid. This solid was extracted with toluene at 90 ° C. for 12 hours, and the gel content was measured and found to be 91.4%.

  10 parts of this PDMS-1 was sampled in terms of polymer, added to a bull flask for half a year to write, 175 parts of distilled water was added, and the atmosphere was replaced with nitrogen. Thereafter, the temperature was raised to 50 ° C., a mixed solution of 76.8 parts of n-butyl acrylate, 1.2 parts of allyl methacrylate and 0.3 part of t-butyl hydroperoxide was added and stirred for 30 minutes. The polyorganosiloxane particles were infiltrated. Next, a mixed solution of 0.002 part of ferrous sulfate, 0.006 part of ethylenediaminetetraacetic acid disodium salt, 0.3 part of Rongalite and 10 parts of distilled water was added to initiate radical polymerization, and then the liquid temperature was 70 ° C. For 2 hours to complete the polymerization to obtain a latex of composite rubber. A part of the composite rubber latex was sampled and the average particle size of the composite rubber was measured and found to be 0.22 μm. The latex was dried to obtain a solid, which was extracted from the solid with toluene at 90 ° C. for 4 hours, and the gel content was measured and found to be 95%.

  To this composite rubber latex, a mixed liquid of 11.5 parts of methyl methacrylate, 0.5 part of butyl acrylate and 0.024 part of t-butyl hydroperoxide was added dropwise at 60 ° C. over 15 minutes. Holding for a time, the graft polymerization to the composite rubber was completed. The average particle diameter of the obtained graft copolymer latex was 0.23 μm. To the obtained graft copolymer latex, an aqueous calcium acetate solution having a concentration of 5% at 40 ° C. was added so that the ratio was 1: 2, and then the temperature was raised to 90 ° C. for coagulation. After coagulation, washing with water was repeated, and then the solid content was separated and dried at 80 ° C. for 24 hours to obtain a polyorganosiloxane-based graft polymer (B-2) powder.

Reference Example 4 Production of Acrylic Rubber Graft Copolymer (B-4) The amount of raw materials used in Reference Example 3 was 15 parts PDMS-1, 70 parts n-butyl acrylate, 0.5 part allyl methacrylate, methyl. An acrylic rubber-based graft copolymer (B-4) was obtained in the same manner except that 14 parts of methacrylate and 0.5 parts of butyl acrylate were used.

[Reference Example 5] Production of butadiene-based graft copolymer (B-5) In a pressure-resistant autoclave, 150 parts of deionized water, 85 parts of 1,3-butadiene, 15 parts of styrene, 0.5 part of t-dodecyl mercaptan, Charge 0.4 parts of diisopropylbenzene hydroperoxide, 1.5 parts of sodium pyrophosphate, 0.02 part of ferrous sulfate, 1.0 part of dextrose and 1.0 part of potassium oleate at 50 ° C. with stirring. By reacting for 15 hours, a butadiene-based rubber polymerization latex was produced. The particle size of this rubber latex was about 80 nm.
After 70 parts of the butadiene rubber polymerization latex (as solid content) was charged into the flask and purged with nitrogen, 1.2 parts of NaHCO ₃ was added to a 10% aqueous solution and stirred for 30 minutes. To this solution, 1 part of potassium oleate was added as a 7% aqueous solution and stabilized. Thereafter, 0.6 parts of Rongalite was added and the liquid temperature was maintained at 70 ° C., and a mixed solution of 15 parts of methyl methacrylate, 13 parts of styrene, 2 parts of ethyl acrylate and 0.2 part of cumene hydroperoxide was added to butadiene. Graft polymerization was carried out on the rubber-based latex polymer.
After 0.5 parts of BHT was added to the obtained graft copolymer latex, a 0.2% sulfuric acid aqueous solution was added to coagulate the graft copolymer, which was solidified by heat treatment at 90 ° C. Thereafter, the coagulated product was washed with warm water and further dried to obtain MBS resin-based graft copolymer (B-5) powder.

[Example 1 to Example 9]
The resin composition which consists of the raw material and compounding ratio which were shown in Table 1 was prepared, the test piece was created from each preparation, and the characteristic was tested. The results are shown in Table 1.
In addition, the raw material used in each Example is as follows.
(A) Amorphous polyester resin: PETG Easter 6763 (manufactured by Eastman Kodak Company)
(B) Graft copolymer: manufactured in Reference Examples 1 to 3 (B-1 to 3)
(C) Lubricant (C-1) Montanate ester wax: Licowax E (manufactured by Clariant Japan)
(C-2) Montanate ester wax: 1: 1 mixture of Licowax E / Licowax OP (C-3) Montanate wax: G431L (manufactured by Clariant Japan)
(D) Carbon black

As is clear from the above detailed description, the amorphous polyester resin composition of the present invention particularly has a good balance between processability and impact resistance, and some of them are at a low temperature of 0 ° C. Also has high impact resistance.
Therefore, the amorphous polyester resin composition of the present invention has a very high utility value as a material for molded articles in a wide range of fields such as resin sheets, films, wallpaper, surface cosmetics, containers, bottles and foams.

Claims (2)

  (A) 99 to 50 parts by mass of amorphous polyester resin, (B) graft copolymer 1 to 50 obtained by graft polymerizing one or more vinyl monomers to acrylic rubber and / or silicone acrylic rubber An amorphous polyester resin composition comprising 0.2 to 5 parts by mass of (C) montanic acid ester wax with respect to 100 parts by mass of the total amount of (A) and (B). A molded article obtained by molding the amorphous polyester resin composition according to claim 1.