KR100842162B1 - A polypropylene resin composition having excellent transparency and impact resistance and a resin product manufactured therefrom - Google Patents

A polypropylene resin composition having excellent transparency and impact resistance and a resin product manufactured therefrom Download PDF

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KR100842162B1
KR100842162B1 KR1020070066395A KR20070066395A KR100842162B1 KR 100842162 B1 KR100842162 B1 KR 100842162B1 KR 1020070066395 A KR1020070066395 A KR 1020070066395A KR 20070066395 A KR20070066395 A KR 20070066395A KR 100842162 B1 KR100842162 B1 KR 100842162B1
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ethylene
polypropylene resin
resin composition
impact resistance
weight
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KR1020070066395A
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Korean (ko)
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임광열
김창희
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삼성토탈 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Abstract

A polypropylene resin composition is provided to realize excellent transparency, dispersity and impact resistance, and to obtain various molded articles requiring such properties. A polypropylene resin composition having excellent transparency and impact resistance comprises: 100 parts by weight of a polypropylene resin comprising 65-97 wt% of a crystalline ethylene-propylene random copolymer containing 0.5-10 wt% of ethylene, and 3-35 wt% of a metallocene-based ethylene-propylene copolymer containing 10-30 wt% of ethylene, and having an absolute viscosity ratio(crystalline ethylene-propylene random copolymer/metallocene-based ethylene-propylene copolymer) of at least 1; and 0.05-5 parts by weight of an organic sorbitol-based nucleating agent.

Description

투명성 및 내충격성이 우수한 폴리프로필렌 수지 조성물 및 이로부터 제조된 수지 성형품{A POLYPROPYLENE RESIN COMPOSITION HAVING EXCELLENT TRANSPARENCY AND IMPACT RESISTANCE AND A RESIN PRODUCT MANUFACTURED THEREFROM} Polypropylene resin composition excellent in transparency and impact resistance and a resin molded article manufactured therefrom

본 발명은 투명성 및 내충격성이 우수한 폴리프로필렌 수지 조성물 및 이로부터 제조된 수지 성형품에 관한 것으로서, 보다 상세하게는 결정성 에틸렌-프로필렌 랜덤 공중합체, 메탈로센계 에틸렌-프로필렌 공중합체 및 유기 솔비톨계 핵제를 포함하는 폴리프로필렌 수지 조성물 및 이를 이용한 수지 성형품에 관한 것이다.The present invention relates to a polypropylene resin composition excellent in transparency and impact resistance and a resin molded article prepared therefrom, and more particularly, to a crystalline ethylene-propylene random copolymer, a metallocene-based ethylene-propylene copolymer, and an organic sorbitol-based nucleating agent. It relates to a polypropylene resin composition and a resin molded article using the same.

폴리프로필렌 수지는 다른 폴리올레핀계 소재에 비하여 강성, 내약품성, 성형성이 뛰어나 자동차 내외장부품, 가전부품 등의 공업적 이용범위가 매우 넓은 소재이다. 그러나, 호모 폴리프로필렌 수지는 얇은 필름으로 성형되는 경우에는 투명하지만, 두께가 2mm 이상의 두께운 제품에서는 투명성이 충분하지 않아 투명한 용기 재질로는 부적합하다. 따라서, 프로필렌에 에틸렌을 공중합하여 제조한 에틸렌-프로필렌 랜덤 공중합체가 투명용 용기 재질로 널리 사용되고 있다. 그러나, 이러한 에틸렌-프로필렌 랜덤 공중합체는 내충격성이 열세하여 크기가 큰 성형품이나 냉동 및 냉장 상태에서 사용되는 용도에는 적용이 제한적이었다.Polypropylene resin is excellent in rigidity, chemical resistance, and moldability compared to other polyolefin-based materials, and is a material having a wide industrial use range such as automobile interior and exterior parts and home appliance parts. However, the homo polypropylene resin is transparent when molded into a thin film, but in a product having a thickness of 2 mm or more, transparency is not sufficient, so it is not suitable as a transparent container material. Therefore, ethylene-propylene random copolymers prepared by copolymerizing ethylene with propylene are widely used as transparent container materials. However, these ethylene-propylene random copolymers are inferior in impact resistance, and their application is limited to large molded articles or applications used in frozen and refrigerated conditions.

폴리프로필렌의 내충격성을 향상시키기 위해서는 몇 가지 방법이 있는데, 고무 성분의 물질을 폴리프로필렌에 용융 혼합시키는 방법이 폭넓게 이용되고 있다. 그러나, 이러한 방법은 폴리프로필렌과 고무 성분의 분산성 저하로 인해 성형품의 투명성이 저하되어, 투명 성형품의 용도로는 사용할 수가 없어 성형품으로서의 가치가 떨어지는 단점이 발생한다. 또한, 대한민국 공개특허 제2001-006497호에서는 올레핀 공중합체와 단독중합체 및 에틸렌 프로필렌 공중합체의 용융 유속비와 고유점도비를 조절하는 방법이 제시되었는데, 이 방법으로 얻어진 조성물은 투명성 개선이 충분치 않아 사출 성형품과 같이 두께가 두꺼운 성형품에 대해서는 충분한 투명성을 갖지 못하는 단점이 있었다. There are several methods for improving the impact resistance of polypropylene, and a method of melt-mixing a rubber component into polypropylene has been widely used. However, this method has a disadvantage in that the transparency of the molded article is lowered due to the deterioration of the dispersibility of the polypropylene and the rubber component, which cannot be used for the use of the transparent molded article, resulting in a low value as a molded article. In addition, Korean Patent Publication No. 2001-006497 discloses a method for controlling the melt flow rate ratio and the intrinsic viscosity ratio of an olefin copolymer, a homopolymer, and an ethylene propylene copolymer, and the composition obtained by this method does not have sufficient transparency improvement for injection. There was a drawback in not having sufficient transparency for thick molded articles, such as molded articles.

본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 투명성 및 내충격성이 우수한 폴리프로필렌 수지 조성물을 제공하는 것이며, 또한, 상기 수지 조성물로부터 제조된 각종 수지 성형품을 제공하는 것이다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a polypropylene resin composition excellent in transparency and impact resistance, and also to provide a variety of resin molded articles produced from the resin composition To provide.

상기와 같은 목적을 달성하기 위하여, 본 발명의 폴리프로필렌 수지 조성물은 0.5~10중량%의 에틸렌을 함유하는 결정성 에틸렌-프로필렌 랜덤 공중합체 65~97중량% 및 10~30중량%의 에틸렌을 함유하는 메탈로센계 에틸렌-프로필렌 공중합체 3~35중량%로 이루어지고, 절대점도비(결정성 에틸렌-프로필렌 랜덤 공중합체/메탈로센계 에틸렌-프로필렌 공중합체)가 1 이상인 폴리프로필렌 수지 100중량부에 대하여 유기 솔비톨계 핵제 0.05~0.5중량부를 포함하는 것을 특징으로 한다.In order to achieve the above object, the polypropylene resin composition of the present invention contains 65 to 97% by weight of crystalline ethylene-propylene random copolymer and 10 to 30% by weight of ethylene containing 0.5 to 10% by weight of ethylene To 100 parts by weight of a polypropylene resin consisting of 3 to 35% by weight of a metallocene-based ethylene-propylene copolymer, having an absolute viscosity ratio (crystalline ethylene-propylene random copolymer / metallocene-based ethylene-propylene copolymer) of 1 or more It characterized by including 0.05 to 0.5 parts by weight of the organic sorbitol-based nucleating agent.

본 발명의 폴리프로필렌 수지를 구성하는 결정성 에틸렌-프로필렌 렌덤 공중합체는 중합 반응 장치에서 에틸렌과 프로필렌을 동시에 투입하여 제조한 랜덤 공중합체로서, 본 발명에서 결정성 에틸렌-프로필렌 랜덤 공중합체의 성분의 역할은 제조물의 기계적 강성을 유지하는 동시에, 적절한 정도의 내열성을 부여하고, 메탈로센계 에틸렌-프로필렌 공중합체와의 적절한 상용성에 의하여 수지 성형품의 투명성을 유지시키는 것이다.The crystalline ethylene-propylene random copolymer constituting the polypropylene resin of the present invention is a random copolymer prepared by simultaneously adding ethylene and propylene in a polymerization reactor, and in the present invention, the crystalline ethylene-propylene random copolymer The role is to maintain the mechanical rigidity of the preparation, to impart an appropriate degree of heat resistance, and to maintain the transparency of the resin molded article by appropriate compatibility with the metallocene-based ethylene-propylene copolymer.

상기 결정성 에틸렌-프로필렌 랜덤 공중합체의 에틸렌 성분은 0.5~10중량%인 것이 바람직하다. 에틸렌 성분의 함량이 0.5중량% 미만인 경우에는 공중합체의 결정화도가 필요 이상으로 높아져서 생성된 조성물의 투명성이 저하되고, 10중량%를 초과하는 경우에는 결정화 속도가 급격히 저하되므로, 강성이 저하되고, 내열성이 떨어져 일상 생활에서 사용하는 수지 성형품, 특히, 시트의 재질로는 부적합하다.It is preferable that the ethylene component of the said crystalline ethylene propylene random copolymer is 0.5 to 10 weight%. If the content of the ethylene component is less than 0.5% by weight, the degree of crystallinity of the copolymer becomes higher than necessary, resulting in a decrease in the transparency of the resulting composition. This is not suitable as a material for resin molded articles used in daily life, in particular, sheets.

상기 메탈로센계 에틸렌-프로필렌 공중합체의 에틸렌 성분은 10~30중량%인 것이 바람직하며, 상기 성분이 10중량% 미만인 경우에는 내충격성 향상이 미비하고, 30중량%를 초과하는 경우에는 결정성 에틸렌-프로필렌 랜덤 공중합체와의 혼련성 저하로 투명성 및 내충격성이 약화되는 문제점이 있다.It is preferable that the ethylene component of the metallocene-based ethylene-propylene copolymer is 10 to 30% by weight, and when the component is less than 10% by weight, the impact resistance is insufficient, and when the content exceeds 30% by weight, crystalline ethylene There is a problem in that transparency and impact resistance are weakened due to a decrease in kneading with -propylene random copolymer.

상기 메탈로센계 에틸렌-프로필렌 공중합체의 함량은 3~35중량%인 것이 바람직하다. 상기 성분이 3중량% 미만인 경우에는 충격 특성 향상이 미비하고, 35중량%를 초과하는 경우에는 강성이 크게 저하되고, 제품 가격이 상승하는 문제점이 있다.The content of the metallocene-based ethylene-propylene copolymer is preferably 3 to 35% by weight. If the component is less than 3% by weight, the impact characteristic improvement is insignificant, and if it exceeds 35% by weight, the rigidity is greatly reduced, there is a problem that the product price rises.

본 발명의 폴리프로필렌 수지를 구성하는 결정성 에틸렌-프로필렌 랜덤 공중합체와 메탈로센계 에틸렌-프로필렌 공중합체의 절대점도비(결정성 에틸렌-프로필렌 랜덤 공중합체/메탈로센계 에틸렌-프로필렌 공중합체)는 1 이상이며, 상기 범위보다 적은 값에서는 내충격성이 약화되는 문제점이 있다.The absolute viscosity ratio (crystalline ethylene-propylene random copolymer / metallocene-based ethylene-propylene copolymer) of the crystalline ethylene-propylene random copolymer and the metallocene-based ethylene copolymer constituting the polypropylene resin of the present invention is If the value is 1 or more and less than the above range, the impact resistance is weakened.

본 발명의 폴리프로필렌 수지 조성물에는 상기 폴리프로필렌 수지 이외에 유기 솔비톨계 핵제를 포함한다.The polypropylene resin composition of the present invention contains an organic sorbitol-based nucleating agent in addition to the polypropylene resin.

일반적으로 폴리프로필렌 수지의 투명용 핵제로는 무기계 핵제와 유기 솔비톨계 핵제를 사용하나, 무기계 핵제는 투명성 향상 효과가 떨어지고, 분산성이 떨 어지는 단점이 있다. 따라서, 본 발명에서는 투명성 향상을 위하여 유기 솔비톨계 핵제를 사용한다. In general, an inorganic nucleating agent and an organic sorbitol nucleating agent are used as the transparent nucleating agent of the polypropylene resin, but the inorganic nucleating agent has a disadvantage in that the transparency improvement effect is inferior and the dispersibility is inferior. Therefore, the present invention uses an organic sorbitol-based nucleating agent for improving transparency.

상기 유기 솔비톨계 핵제는, 예를 들어, 비스-벤질리덴 솔비톨, 비스-메틸 벤질리덴 솔비톨, 비스-에틸벤질 솔비톨, 1,3-클로로-2,4-메틸벤질 솔비톨 및 1,3,2,4-비스-o-3,4-디메틸벤질 솔비톨 등을 사용할 수 있다.The organic sorbitol-based nucleating agent is, for example, bis-benzylidene sorbitol, bis-methyl benzylidene sorbitol, bis-ethylbenzyl sorbitol, 1,3-chloro-2,4-methylbenzyl sorbitol and 1,3,2, 4-bis-o-3,4-dimethylbenzyl sorbitol and the like can be used.

상기 유기 솔비톨계 핵제의 함량은 폴리프로필렌 수지 100중량부에 대하여 0.05~0.5중량부인 것이 바람직한데, 상기 함량이 0.05중량부 미만인 경우에는 투명성이 발현되지 않으며, 0.5중량부를 초과하는 경우에는 초과된 양에 비하여 투명성 향상 효과가 미미하다.The content of the organic sorbitol-based nucleating agent is preferably 0.05 to 0.5 parts by weight with respect to 100 parts by weight of polypropylene resin, the transparency is not expressed when the content is less than 0.05 parts by weight, the amount exceeded when exceeding 0.5 parts by weight Compared with the above, the effect of improving transparency is insignificant.

본 발명의 폴리프로필렌 수지 조성물에는, 그 특성을 크게 해치지 않는 범위 내에서 통상적으로 사용되는 산화방지제, 내열안정제, 내후안정제, 대전방지제, 활제, 슬립제, 난연제, 안료, 염료 등과 같은 각종 첨가제가 첨가될 수 있다.To the polypropylene resin composition of the present invention, various additives such as antioxidants, heat stabilizers, weather stabilizers, antistatic agents, lubricants, slip agents, flame retardants, pigments, dyes, and the like which are commonly used within the range of not significantly impairing their properties are added. Can be.

본 발명의 폴리프로필렌 수지 조성물을 제조하는 방법은 특별한 제한이 없고, 통상적으로 널리 알려진 방법을 이용할 수 있다. 예를 들어, 상기의 각 성분들과 기타 첨가제를 필요한 양으로 첨가하여 니더(Kenader), 롤, 밤바리(Bambury) 믹서 등의 혼련기와 1축 또는 2축 압출기 등을 사용하여 혼련하는 방법이 이용될 수 있다.The method for producing the polypropylene resin composition of the present invention is not particularly limited, and generally known methods can be used. For example, by adding each of the above components and other additives in the required amount, kneading such as kneader, roll, Bambury mixer, and kneading using a single or twin screw extruder is used. Can be.

또한, 본 발명은 상기 폴리프로필렌 수지 조성물로부터 제조되는 각종의 수지 성형품을 제공하는 것을 특징으로 한다.Moreover, this invention provides the various resin molded articles manufactured from the said polypropylene resin composition.

상기 수지 성형품으로는 투명블로우 용기, 투명 시트, 가전 또는 전기전자 제품, 냉장 또는 냉동 용기, 투명 사출 제품 및 투명 식품 용기 등을 예로 들 수 있지만, 여기에 한정되는 것은 아니다.Examples of the resin molded article include, but are not limited to, transparent blow containers, transparent sheets, home appliances or electrical and electronic products, refrigerated or frozen containers, transparent injection products, and transparent food containers.

상기에서 상세히 설명된 바와 같이, 본 발명의 폴리프로필렌 수지 조성물은 투명성 및 내충격성이 모두 우수하여, 이러한 특성을 요구하는 각종 수지 성형품에 적용할 수 있는 효과가 있다.As described in detail above, the polypropylene resin composition of the present invention is excellent in both transparency and impact resistance, there is an effect that can be applied to various resin molded articles that require such properties.

다음 표 1 및 표 2의 성분 및 함량으로 실시예 1~9 및 비교예 1~9의 시편을 제조하였다.Next, the specimens of Examples 1 to 9 and Comparative Examples 1 to 9 were prepared using the ingredients and contents of Tables 1 and 2.

실시예 1~9 및 비교예 1~9의 시편 물성의 측정법은 다음과 같다.Measurement methods of the specimen physical properties of Examples 1 to 9 and Comparative Examples 1 to 9 are as follows.

용융지수(Melt flow Index): ASTM D1238의 방법에 따라 230℃, 2.16kg 하중에서 측정.Melt Flow Index: measured at 230 ° C., 2.16 kg load according to ASTM D1238 method.

절대점도: 고유점도를 135℃ 데칼린 용매에서 측정.Absolute Viscosity: Intrinsic viscosity measured in 135 ° C decalin solvent.

아이조드 충격강도: ASTM D256의 방법에 따라 23℃에서 측정.Izod impact strength: measured at 23 ° C. according to the method of ASTM D256.

듀폰 충격강도: 수지 조성물을 삼성클뢰크너 FCM-110(형체력=100톤) 성형 사출기를 이용하여 100mm*100mm*2mm 시편을 제작한 후, 1~5kg의 추(치구 지름 25mm)를 한정된 높이에서 떨어뜨려 충격을 준 후, 시편 수의 절반이 파괴되는 힘을 측정.DuPont Impact Strength: The resin composition was fabricated using a Samsung Klukner FCM-110 (molding force = 100 tons) injection molding machine to produce a 100mm * 100mm * 2mm specimen, and then the 1-5kg weight (25mm diameter) was dropped from the limited height. After knocking and impacting, measure the force at which half the number of specimens is destroyed.

투명성: ASTM D1004 규격에 따라 1.7mm, 2.0mm 및 3.0mm 시편의 흐림도(Haze)를 측정. Transparency: Measure haze of 1.7 mm, 2.0 mm and 3.0 mm specimens in accordance with ASTM D1004 specifications.

Figure 112007048484133-pat00001
Figure 112007048484133-pat00001

Figure 112007048484133-pat00002
Figure 112007048484133-pat00002

성분 A: 결정성 에틸렌-프로필렌 랜덤 공중합체Component A: Crystalline Ethylene-Propylene Random Copolymer

성분 B: Component B:

PR-1 메탈로센계 에틸렌-프로필렌 공중합체(엑손모빌사, VM3000)   PR-1 metallocene ethylene-propylene copolymer (Exxon Mobil, VM3000)

PR-2 메탈로센계 에틸렌-프로필렌 공중합체(엑손모빌사, VM6202)   PR-2 metallocene ethylene-propylene copolymer (ExxonMobil, VM6202)

PR-3 메탈로센계 에틸렌-프로필렌 공중합체(다우케미칼사, DP3000)   PR-3 metallocene-based ethylene-propylene copolymer (Dow Chemical Co., DP3000)

PR-4 메탈로센계 에틸렌-프로필렌 공중합체(엑손모빌사, VM6100)   PR-4 metallocene ethylene-propylene copolymer (ExxonMobil, VM6100)

ER-1 비메탈로센계 에틸렌-프로필렌 공중합체(금호폴리켐사, KEP-070P)   ER-1 nonmetallocene-based ethylene-propylene copolymer (Kumho Polychem Co., KEP-070P)

BR-1 에틸렌-부텐 공중합체(다우케미탈사, ENR7340)   BR-1 ethylene-butene copolymer (Dukechemistry, ENR7340)

ER-2 에틸렌-알파-올레핀 공중합체(제팬 폴리켐사, KS340)   ER-2 ethylene-alpha-olefin copolymer (Japan Polychem, KS340)

성분 C: 3,4-디메틸벤질리덴 솔비톨Component C: 3,4-dimethylbenzylidene sorbitol

상기 표 1 및 표 2에 나타난 바와 같이, 본 발명의 성분 및 각 성분의 수치 범위가 모두 본 발명의 범위 내인 실시예는 투명성 및 내충격성이 모두 우수함을 알 수 있다.As shown in Table 1 and Table 2, it can be seen that the examples of the components of the present invention and the numerical range of each component are all within the scope of the present invention, both excellent in transparency and impact resistance.

Claims (3)

0.5~10중량%의 에틸렌을 함유하는 결정성 에틸렌-프로필렌 랜덤 공중합체 65~97중량% 및 10~30중량%의 에틸렌을 함유하는 메탈로센계 에틸렌-프로필렌 공중합체 3~35중량%로 이루어지고, 절대점도비(결정성 에틸렌-프로필렌 랜덤 공중합체/메탈로센계 에틸렌-프로필렌 공중합체)가 1 이상인 폴리프로필렌 수지 100중량부에 대하여 유기 솔비톨계 핵제 0.05~0.5중량부를 포함하는 것을 특징으로 하는 투명성 및 내충격성이 우수한 폴리프로필렌 수지 조성물.65 to 97 wt% of the crystalline ethylene-propylene random copolymer containing 0.5 to 10 wt% of ethylene and 3 to 35 wt% of the metallocene-based ethylene-propylene copolymer containing 10 to 30 wt% of ethylene Transparency, characterized in that it comprises 0.05 to 0.5 parts by weight of an organic sorbitol-based nucleating agent with respect to 100 parts by weight of polypropylene resin having an absolute viscosity ratio (crystalline ethylene-propylene random copolymer / metallocene-based ethylene-propylene copolymer) of 1 or more. And polypropylene resin composition excellent in impact resistance. 제1항의 수지 조성물로부터 제조된 것을 특징으로 하는 수지 성형품.A resin molded article prepared from the resin composition of claim 1. 제2항에 있어서, 상기 수지 성형품은 투명블로우 용기, 투명 시트, 가전 또는 전기전자 제품, 냉장 또는 냉동 용기, 투명 사출 제품 또는 투명 식품 용기인 것을 특징을 하는 수지 성형품.3. The resin molded article according to claim 2, wherein the resin molded article is a transparent blow container, a transparent sheet, a home appliance or an electric / electronic product, a refrigerated or frozen container, a transparent injection product or a transparent food container.
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