KR100792116B1 - Polypropylene resin composition for transparent sheet having high impact resistance and scratch resistance - Google Patents

Polypropylene resin composition for transparent sheet having high impact resistance and scratch resistance Download PDF

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KR100792116B1
KR100792116B1 KR1020010080738A KR20010080738A KR100792116B1 KR 100792116 B1 KR100792116 B1 KR 100792116B1 KR 1020010080738 A KR1020010080738 A KR 1020010080738A KR 20010080738 A KR20010080738 A KR 20010080738A KR 100792116 B1 KR100792116 B1 KR 100792116B1
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resin composition
propylene
weight
resistance
parts
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KR20030050324A (en
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김창희
박영도
차승엽
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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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
    • 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
    • C08J5/18—Manufacture of films or sheets
    • 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
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    • C08K5/053—Polyhydroxylic alcohols
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    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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
    • 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
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • 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

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Abstract

본 발명은 저온 내충격성 및 내스크레치성이 우수한 투명시트를 제조하는데 적합한 폴리프로필렌 수지 조성물에 관한 것으로, 보다 상세하게는 1-부텐 함량이 1~10 몰%이고 용융지수(230℃, 2.16kg 하중조건하, ASTM D1238 규격)가 1~10 g/10min인 프로필렌-1-부텐 랜덤 공중합체 100 중량부, 솔비톨계 핵제 0.05~0.5 중량부, 및 에틸렌-α-올레핀 공중합체 1~5 중량부를 포함하는, 투명시트용 폴리프로필렌 수지 조성물에 관한 것이며, 본 발명의 수지 조성물은 내열성, 투명성, 저온 내충격성 및 내스크레치성이 모두 우수하므로, 파일 등의 문구용 시트, 또는 산업용 자재, 특히 우수한 투명성과 내스크레치성을 동시에 요구하는 시트 등의 제조에 매우 유용하다.
The present invention relates to a polypropylene resin composition suitable for producing a transparent sheet having excellent low temperature impact resistance and scratch resistance, and more specifically, 1-butene content is 1 ~ 10 mol% and melt index (230 ℃, 2.16kg load Under the conditions, ASTM D1238 standard) 100 parts by weight of propylene-1-butene random copolymer having 1 to 10 g / 10min, 0.05 to 0.5 parts by weight of sorbitol-based nucleating agent, and 1 to 5 parts by weight of ethylene-α-olefin copolymer The present invention relates to a polypropylene resin composition for transparent sheets, and because the resin composition of the present invention is excellent in all of heat resistance, transparency, low temperature impact resistance and scratch resistance, stationery sheets such as piles or industrial materials, particularly excellent transparency and It is very useful for production of sheets and the like which require scratch resistance at the same time.

투명시트, 내스크레치성, 저온 내충격성, 프로필렌-1-부텐 랜덤 공중합체, 솔비톨계 핵제, 에틸렌-α-올레핀 공중합체Transparent sheet, scratch resistance, low temperature impact resistance, propylene-1-butene random copolymer, sorbitol-based nucleating agent, ethylene-α-olefin copolymer

Description

내충격성 및 내스크레치성이 향상된 투명시트용 폴리프로필렌 수지 조성물{Polypropylene resin composition for transparent sheet having high impact resistance and scratch resistance}Polypropylene resin composition for transparent sheet having high impact resistance and scratch resistance}

본 발명은 저온 내충격성 및 내스크레치성이 우수한 투명시트를 제조하는데 적합한 폴리프로필렌 수지 조성물에 관한 것으로, 보다 상세하게는 프로필렌-1-부텐 랜덤 공중합체에 투명성 개선 목적으로 솔비톨계 핵제를, 그리고 저온 내충격성 개선 목적으로 에틸렌-α-올레핀 공중합체를 첨가하여 제조된 폴리프로필렌 수지 조성물에 관한 것이다.The present invention relates to a polypropylene resin composition suitable for producing a transparent sheet having excellent low-temperature impact resistance and scratch resistance, and more particularly, a sorbitol-based nucleating agent for clarity improvement in a propylene-1-butene random copolymer, and a low temperature. The present invention relates to a polypropylene resin composition prepared by adding an ethylene-α-olefin copolymer for the purpose of improving impact resistance.

일반적으로 문구류 용도의 폴리프로필렌 투명시트는 프로필렌-α-올레핀 랜덤 공중합체 수지를 사용하여 제조된 경우, 투명성은 우수하나 저온충격특성이 열세하고 표면에 스크레치가 쉽게 발생하는 문제점이 있다. 대한민국 특허공개 제 98-042450호에서는 0.5 내지 90 몰%의 1-부텐을 함유하는 프로필렌-1-부텐 랜덤 공중합체를 개시하고 있는데, 상기 공중합체는 경도가 낮아 유연성이 뛰어나며, 이를 폴리프로필렌 수지와 혼합한 경우 유연성, 인장신율 및 특성, 내상부성 및 투명성 등이 우수한 열가소성 수지 조성물을 얻을 수 있다고 기술하고 있다. 그러나, 상기 수지 조성물 역시 내스크레치성 및 내블로킹성 면에서 미흡한 점이 있다. 반면, 프로필렌 단독중합체와 프로필렌-α-올레핀 공중합체로 이루어진 블록 공중합체 수지를 사용하는 경우에는, 저온충격특성은 우수하나 투명성이 떨어지고, 특히 낙하충격시 백화가 발생하는 문제점이 있다. In general, the polypropylene transparent sheet for stationery applications, when manufactured using a propylene-α-olefin random copolymer resin, has excellent transparency but low temperature impact characteristics and inferior scratches on the surface. Korean Patent Publication No. 98-042450 discloses a propylene-1-butene random copolymer containing 0.5 to 90 mol% of 1-butene, the copolymer having low hardness and excellent flexibility, and thus the polypropylene resin and When mixed, it is described that a thermoplastic resin composition excellent in flexibility, tensile elongation and properties, scratch resistance and transparency can be obtained. However, the resin composition also has a disadvantage in terms of scratch resistance and blocking resistance. On the other hand, in the case of using a block copolymer resin composed of a propylene homopolymer and a propylene-α-olefin copolymer, low temperature impact characteristics are excellent, but transparency is poor, and in particular, whitening occurs during drop impact.

상술한 바와 같이, 종래의 폴리프로필렌 수지 조성물을 이용한 투명시트 제품은 투명성과 저온 내충격성, 내블로킹성 및 내열성 등 제반 물성을 동시에 만족 시키는 것이 불가하였다.
As described above, the transparent sheet product using the conventional polypropylene resin composition was unable to satisfy various properties such as transparency and low temperature impact resistance, blocking resistance and heat resistance at the same time.

본 발명은 상술한 바와 같은 종래기술의 문제점들을 해결하기 위한 것으로, 투명성과 저온 내충격성이 뛰어날 뿐만 아니라 내스크레치성이 우수한 시트를 성형하기에 적합한 폴리프로필렌 수지 조성물을 제공함을 목적으로 한다. The present invention is to solve the problems of the prior art as described above, an object of the present invention is to provide a polypropylene resin composition suitable for molding a sheet having excellent transparency and low temperature impact resistance as well as excellent scratch resistance.

즉, 본 발명은 1-부텐 함량이 1~10 몰%이고 용융지수(230℃, 2.16kg 하중조건하, ASTM D1238 규격)가 1~10 g/10min인 프로필렌-1-부텐 랜덤 공중합체 100 중량부, 솔비톨계 핵제 0.05~0.5 중량부, 및 에틸렌-α-올레핀 공중합체 1~5 중량부를 포함하는, 투명시트용 폴리프로필렌 수지 조성물을 제공한다.
That is, the present invention is 100 weight percent propylene-1-butene random copolymer having a 1-butene content of 1 to 10 mol% and a melt index (230 DEG C, 2.16 kg load condition, ASTM D1238 standard) of 1 to 10 g / 10 min. It provides the polypropylene resin composition for transparent sheets containing 0.05-0.5 weight part of sorbitol type nucleating agents, and 1-5 weight part of ethylene-alpha-olefin copolymers.

이하, 본 발명의 폴리프로필렌 수지 조성물을 각 구성 성분별로 보다 상세하 게 설명한다. Hereinafter, the polypropylene resin composition of the present invention will be described in more detail for each component.

본 발명에 사용된 프로필렌-1-부텐 랜덤 공중합체 수지는 프로필렌을 주성분으로 하는 결정성 공중합체로서, 1-부텐의 함량이 1~10 몰%이고, 용융지수(230℃, 2.16kg 하중조건하, ASTM D1238 규격)가 1~10 g/10min의 범위 내에 든다. 상기 프로필렌-1-부텐 랜덤 공중합체 중의 1-부텐 함량이 1 몰% 미만이면 결정성 상승에 따른 투명성 저하 및 충격특성 저하로 인하여 폴리프로필렌 시트에의 적용이 어렵게 되는 반면, 10 몰%를 초과하면 결정성이 감소하여 폴리프로필렌 시트에 적용시 블로킹력이 높고 스크레치 발생이 심하여 시트 제품으로서의 품질이 열세한 문제점을 나타낸다. 한편, 상기 공중합체 수지의 용융지수가 1 g/10min 미만이면 가공성이 저하되며, 10 g/10min를 초과하면 다이(die) 통과시 낮은 용융강도로 인해 성형이 어렵게 된다.The propylene-1-butene random copolymer resin used in the present invention is a propylene-based crystalline copolymer, having a content of 1-butene of 1 to 10 mol%, and a melt index (230 ° C., 2.16 kg under load conditions). , ASTM D1238 standard) is within the range of 1 ~ 10 g / 10min. When the 1-butene content in the propylene-1-butene random copolymer is less than 1 mol%, it is difficult to apply to the polypropylene sheet due to the decrease in transparency and impact properties due to the increase in crystallinity, whereas when it exceeds 10 mol% Decreased crystallinity has high blocking force and high scratching when applied to polypropylene sheet, resulting in inferior quality as a sheet product. On the other hand, if the melt index of the copolymer resin is less than 1 g / 10min, the workability is lowered, if it exceeds 10 g / 10min, molding is difficult due to the low melt strength when passing through the die (die).

폴리프로필렌 시트의 투명성 개선용 핵제로는 통상 무기계 핵제와 솔비톨계 핵제가 사용되나, 무기계 핵제는 투명성 향상 효과가 떨어지고 분산성이 떨어지는 단점이 있다. 따라서, 본 발명에서는 최종 시트의 투명성 향상을 위한 핵제로서 솔비톨계 핵제를 사용하며, 바람직하게는 우수한 투명성을 발현하며 냄새 문제가 가장 적은 것으로 알려진 3,4-디메틸벤질리덴 솔비톨을 사용한다. 본 발명에 따르면, 상기 솔비톨계 핵제는 상기 프로필렌-1-부텐 랜덤 공중합체 수지 100 중량부 당 0.05~0.5 중량부의 비율로 첨가된다. 만일 상기 솔비톨계 핵제의 첨가량이 0.05 중량부 미만이면 투명성이 발현되지 않으며, 0.5 중량부를 초과하면 초과된 양에 비하여 시트의 투명성 향상 효과가 거의 없다. In general, an inorganic nucleating agent and a sorbitol-based nucleating agent are used as the nucleating agent for improving the transparency of the polypropylene sheet, but the inorganic nucleating agent has a disadvantage in that the transparency-increasing effect is poor and the dispersibility is inferior. Therefore, in the present invention, a sorbitol-based nucleating agent is used as a nucleating agent for improving transparency of the final sheet, and preferably 3,4-dimethylbenzylidene sorbitol is known which exhibits excellent transparency and has the least odor problem. According to the present invention, the sorbitol-based nucleating agent is added at a ratio of 0.05 to 0.5 parts by weight per 100 parts by weight of the propylene-1-butene random copolymer resin. If the added amount of the sorbitol-based nucleating agent is less than 0.05 parts by weight, transparency is not expressed. If the amount of the sorbitol-based nucleating agent is more than 0.5 parts by weight, the transparency of the sheet is hardly improved compared to the amount exceeded.                     

본 발명에서는 최종 시트에 우수한 저온 내충격성을 부여하기 위한 목적으로, 상기 프로필렌-1-부텐 랜덤 공중합체 수지 100 중량부 당 에틸렌-α-올레핀 공중합체를 1~5 중량부의 비율로 첨가하는데, 이때 에틸렌-α-올레핀 공중합체의 첨가량이 1 중량부 미만이면 충격특성의 향상을 기대하기 어려운 반면, 5 중량부를 초과하면 내블로킹성 및 내스크레치성이 저하되는 문제점이 있다. 본 발명에 사용된 에틸렌-α-올레핀 공중합체는 밀도가 0.88 이상 0.90 이하이고, 용융지수(190℃)가 1~10g/10min인 것이 바람직하다. 또한, 저온 내충격성 측면에서, 상기 공중합체를 구성하는 α-올레핀 성분은 3~8의 탄소수를 갖는 것이 바람직하다.In the present invention, for the purpose of imparting excellent low-temperature impact resistance to the final sheet, an ethylene-α-olefin copolymer is added in an amount of 1 to 5 parts by weight based on 100 parts by weight of the propylene-1-butene random copolymer resin. If the added amount of the ethylene-α-olefin copolymer is less than 1 part by weight, it is difficult to expect the improvement of the impact characteristics, while if it exceeds 5 parts by weight, the blocking resistance and the scratch resistance are deteriorated. The ethylene-α-olefin copolymer used in the present invention preferably has a density of 0.88 or more and 0.90 or less, and a melt index (190 ° C.) of 1 to 10 g / 10 min. In addition, in view of low temperature impact resistance, the α-olefin component constituting the copolymer preferably has 3 to 8 carbon atoms.

상술한 성분들 이외에도, 본 발명의 수지 조성물에는 산화방지제, 중화제, 대전방지제 등의 각종 첨가제가 본 발명의 목적에 어긋나지 않는 범위 내에서 첨가될 수 있다.
In addition to the above-mentioned components, various additives such as antioxidants, neutralizing agents, antistatic agents and the like may be added to the resin composition of the present invention within a range not contrary to the object of the present invention.

이하, 실시예를 통하여 본 발명을 보다 구체적으로 설명하고자 하나, 이러한 실시예들은 단지 설명의 목적을 위한 것으로 본 발명을 제한하는 것으로 해석되어서는 안된다.
Hereinafter, the present invention will be described in more detail with reference to examples, but these examples are for illustrative purposes only and should not be construed as limiting the present invention.

실시예 1Example 1

1-부텐 함량이 3 몰%이고 용융지수(230℃, 2.16kg 조건하, ASTM D1238 규격)가 4.0 g/10min인 프로필렌-1-부텐 랜덤 공중합체 수지 100 중량부 및 3,4-디메틸벤질리덴 솔비톨 0.2 중량부의 혼합물에, 밀도가 0.88이고 용융지수(190℃)가 3.0g/10min인 에틸렌-프로필렌 공중합체(타프머, 미쓰이석유화학)를 3 중량부 첨가하고, 여기에 페놀계 산화방지제로서 테트라키스[메틸렌-(3,5-디-t-부틸-4-히드록시페닐)프로피오네이트]메탄 0.1 중량부, 인계 산화방지제로서 트리스(2,4-디-t-부틸페닐)포스파이트 0.1 중량부, 그리고 중화제로서 DHT-4A(일본 교화산업) 0.03 중량부를 더 첨가하고 혼련한 후, 이께가이 이축 압출기로 200℃에서 압출하여 직경 2mm 정도의 펠렛을 제조하였다. 상기 펠렛을 T 다이 및 연마롤(polishing roll)이 장착된 시트성형기를 이용하여 T-다이법으로 압출온도 220℃, 냉각롤 온도 40℃, 및 성형속도 2mm/분의 조건하에 성형하여, 두께 0.3mm의 시트를 수득하였다.
100 parts by weight of propylene-1-butene random copolymer resin and 3,4-dimethylbenzylidene having a 1-butene content of 3 mol% and a melt index (230 ° C., 2.16 kg conditions, ASTM D1238 standard) of 4.0 g / 10 min. To the mixture of 0.2 parts by weight of sorbitol, 3 parts by weight of an ethylene-propylene copolymer (tafmer, Mitsui Petrochemical) having a density of 0.88 and a melt index (190 ° C) of 3.0 g / 10 min was added thereto, and as a phenolic antioxidant 0.1 parts by weight of tetrakis [methylene- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane, tris (2,4-di-t-butylphenyl) phosphite as a phosphorus antioxidant 0.1 parts by weight, and 0.03 parts by weight of DHT-4A (Japan Kyowa Kogyo Co., Ltd.) as a neutralizing agent were further added and kneaded, followed by extrusion at 200 ° C. with a twin screw extruder to prepare pellets having a diameter of about 2 mm. The pellet was molded by a T-die method using a sheet molding machine equipped with a T die and a polishing roll under the conditions of an extrusion temperature of 220 ° C., a cooling roll temperature of 40 ° C., and a molding rate of 2 mm / min. A sheet of mm was obtained.

비교예 1Comparative Example 1

1-부텐 함량이 3 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지 대신에 1-부텐 함량이 7 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지를 사용하고, 3,4-디메틸벤질리덴 솔비톨을 생략한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
3,4-dimethylbenzylidene sorbitol is used in place of the propylene-1-butene random copolymer resin having a 1-butene content of 7 mol% and in place of the propylene-1-butene random copolymer resin having a 1-butene content of 3 mol% Except for omission, a resin composition was prepared in the same manner as in Example 1, and a sheet was molded.

비교예 2Comparative Example 2

3,4-디메틸벤질리덴 솔비톨 대신에 무기계 핵제인 알킬안식향산 알루미늄염을 사용한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
A resin composition was prepared and the sheet was formed in the same manner as in Example 1, except that the alkyl benzoate aluminum salt, which is an inorganic nucleating agent, was used instead of 3,4-dimethylbenzylidene sorbitol.

비교예 3Comparative Example 3

1-부텐 함량이 3 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지 대신에 1-부텐 함량이 15 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지를 사용한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
Example 1 except that propylene-1-butene random copolymer resin having 15 mol% of 1-butene content was used instead of propylene-1-butene random copolymer resin having 3 mol% of 1-butene content In the same manner, a resin composition was prepared and the sheet was molded.

비교예 4Comparative Example 4

1-부텐 함량이 3 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지 대신에 에틸렌 함량이 3 몰%인 프로필렌-에틸렌 랜덤 공중합체 수지를 사용한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
Resin was used in the same manner as in Example 1, except that propylene-ethylene random copolymer resin having an ethylene content of 3 mol% was used instead of the propylene-1-butene random copolymer resin having a 1-butene content of 3 mol%. The composition was prepared and the sheet was molded.

비교예 5Comparative Example 5

1-부텐 함량이 3 몰%인 프로필렌-1-부텐 랜덤 공중합체 수지 대신에 프로필렌 단독중합체인 호모폴리프로필렌 수지를 사용한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
A resin composition was prepared in the same manner as in Example 1, except that a homopolypropylene resin, a propylene homopolymer, was used in place of the propylene-1-butene random copolymer resin having a 1-butene content of 3 mol%, and the sheet was prepared. Molded.

비교예 6Comparative Example 6

에틸렌-α-올레핀 공중합체를 생략한 것을 제외하고는, 상기 실시예 1과 동일한 방법으로 수지 조성물을 제조하고 시트를 성형하였다.
Except that the ethylene-α-olefin copolymer was omitted, a resin composition was prepared and the sheet was molded in the same manner as in Example 1.

상기 실시예 1 및 비교예 1~6에 사용된 수지 및 핵제의 종류를 하기 표 1에 요약하여 나타내었으며, 수득된 시트의 투명성(헤이즈), 내열성, 저온 내충격성, 및 내스크레치성의 평가 결과는 하기 표 2와 같다. The types of resins and nucleating agents used in Examples 1 and 6 and 6 are summarized in the following Table 1, and the evaluation results of transparency (haze), heat resistance, low temperature impact resistance, and scratch resistance of the obtained sheet were It is shown in Table 2 below.

성분ingredient 기본 수지Basic resin 핵제Nuclear agent 추가 처방 수지Additional prescription resin 실시예 1Example 1 프로필렌-1-부텐 랜덤 공중합체 (1-부텐: 3몰%)Propylene-1-butene Random Copolymer (1-butene: 3 mol%) 3,4-디메틸벤질리덴 솔비톨3,4-dimethylbenzylidene sorbitol 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 1Comparative Example 1 프로필렌-1-부텐 랜덤 공중합체 (1-부텐: 7몰%)Propylene-1-butene random copolymer (1-butene: 7 mol%) -- 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 2Comparative Example 2 프로필렌-1-부텐 랜덤 공중합체 (1-부텐: 3몰%)Propylene-1-butene Random Copolymer (1-butene: 3 mol%) 알킬안식향산 알루미늄염Alkyl Benzoate Aluminum Salt 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 3Comparative Example 3 프로필렌-1-부텐 랜덤 공중합체 (1-부텐: 15몰%)Propylene-1-butene Random Copolymer (1-butene: 15 mol%) 3,4-디메틸벤질리덴 솔비톨3,4-dimethylbenzylidene sorbitol 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 4Comparative Example 4 프로필렌-에틸렌 랜덤 공중합체 (에틸렌: 3몰%)Propylene-ethylene random copolymer (ethylene: 3 mol%) 3,4-디메틸벤질리덴 솔비톨3,4-dimethylbenzylidene sorbitol 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 5Comparative Example 5 프로필렌 단독중합체Propylene homopolymer 3,4-디메틸벤질리덴 솔비톨3,4-dimethylbenzylidene sorbitol 에틸렌-α-올레핀 공중합체Ethylene-α-olefin Copolymer 비교예 6Comparative Example 6 프로필렌-1-부텐 랜덤 공중합체 (1-부텐: 3몰%)Propylene-1-butene Random Copolymer (1-butene: 3 mol%) 3,4-디메틸벤질리덴 솔비톨3,4-dimethylbenzylidene sorbitol --

투명성Transparency 내열성Heat resistance 저온 내충격성 (-20℃)Low temperature impact resistance (-20 ℃) 내스크레치성Scratch resistance 단위unit %% ℃℃ JJ 연필경도Pencil hardness 실시예 1Example 1 44 130130 88 3B3B 비교예 1Comparative Example 1 1515 133133 99 4B4B 비교예 2Comparative Example 2 1010 132132 66 3B3B 비교예 3Comparative Example 3 33 123123 1010 5B5B 비교예 4Comparative Example 4 44 125125 44 4B4B 비교예 5Comparative Example 5 88 145145 33 1B1B 비교예 6Comparative Example 6 66 135135 1One 2B2B

[물성 평가 방법][Property evaluation method]

(1) 투명성: ASTM D1003A 규격에 따라 측정된 헤이즈 값으로 나타내었으며, 헤이즈 값이 낮을수록 투명성이 우수하다.(1) Transparency: The haze value measured according to ASTM D1003A standard. The lower the haze value, the better the transparency.

(2) 내열성: 비캣(Vicat) 연화온도를 JIS-K7206에 따라 측정하여 내열성의 지표로 삼았다. 비캣(Vicat) 연화온도 값이 클수록 양호한 내열성을 나타낸다.(2) Heat resistance: Vicat softening temperature was measured according to JIS-K7206 and used as an index of heat resistance. The larger the Vicat softening temperature value, the better the heat resistance.

(3) 저온 내충격성: -20℃에서 시트 천공시의 충격강도로 나타내었다. 값이 클수록 저온 내충격성이 우수함을 의미한다. (3) Low temperature impact resistance: It is shown as the impact strength at the time of sheet puncture at -20 degreeC. Larger value means better low temperature impact resistance.

(4) 내스크레치성: 연필경도계로서 측정하였다.
(4) Scratch resistance: Measured as a pencil hardness meter.

이상에서 상세히 설명한 바와 같이, 본 발명의 수지 조성물은 내열성, 투명성, 저온 내충격성 및 내스크레치성이 모두 우수하므로, 파일 등의 문구용 시트, 또는 산업용 자재, 특히 우수한 투명성과 내스크레치성을 동시에 요구하는 시트 등의 제조에 매우 유용하다.As described in detail above, since the resin composition of the present invention is excellent in all of heat resistance, transparency, low temperature impact resistance and scratch resistance, it is required for stationery sheets such as piles or industrial materials, especially excellent transparency and scratch resistance. It is very useful for the manufacture of sheets or the like.

Claims (4)

1-부텐 함량이 1~10 몰%이고 용융지수(230℃, 2.16kg 하중조건하, ASTM D1238 규격)가 1~10 g/10min인 프로필렌-1-부텐 랜덤 공중합체 100 중량부;100 parts by weight of propylene-1-butene random copolymer having a 1-butene content of 1 to 10 mol% and a melt index (230 ° C., 2.16 kg load condition, ASTM D1238 standard) of 1 to 10 g / 10 min; 솔비톨계 핵제 0.05~0.5 중량부; 및 0.05-0.5 parts by weight of sorbitol-based nucleating agent; And 밀도가 0.88~0.90이고 용융지수(190℃)가 1~10g/10min인 에틸렌-α-올레핀 공중합체 1~5 중량부; 1 to 5 parts by weight of an ethylene-α-olefin copolymer having a density of 0.88 to 0.90 and a melt index (190 ° C.) of 1 to 10 g / 10 min; 를 포함하는 투명시트용 폴리프로필렌 수지 조성물.Polypropylene resin composition for transparent sheet comprising a. 제 1항에 있어서,The method of claim 1, 상기 솔비톨계 핵제가 3,4-디메틸벤질리덴 솔비톨인 것을 특징으로 하는 투명시트용 폴리프로필렌 수지 조성물.Said sorbitol-based nucleating agent is 3,4-dimethylbenzylidene sorbitol, polypropylene resin composition for transparent sheets. 삭제delete 제 1항에 있어서,The method of claim 1, 상기 에틸렌-α-올레핀 공중합체를 구성하는 α-올레핀 성분이 3~8의 탄소수를 갖는 것을 특징으로 하는 투명시트용 폴리프로필렌 수지 조성물.(Alpha) -olefin component which comprises the said ethylene-alpha-olefin copolymer has 3-8 carbon atoms, The polypropylene resin composition for transparent sheets characterized by the above-mentioned.
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