Polyethylene resin composition and product produced by the composition for beverage cap
The present invention relates to a multimodal polyethylene resin composition having excellent flexural modulus and strain hardening modulus when produced as a molded product, and a molded product produced therefrom. The polyethylene resin composition comprises: 20 to 50 wt% of a copolymer (A) of eth...
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| Format: | Patent |
| Sprache: | eng ; kor |
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| Zusammenfassung: | The present invention relates to a multimodal polyethylene resin composition having excellent flexural modulus and strain hardening modulus when produced as a molded product, and a molded product produced therefrom. The polyethylene resin composition comprises: 20 to 50 wt% of a copolymer (A) of ethylene and an alpha-olefin having 6 to 20 carbon atoms, the copolymer (A) having a melt flow index of 1.0 to 2.5 g/10 minutes (21.6 kg, 190℃); and 50 to 80 wt% of an ethylene homopolymer (B), in which the polyethylene resin composition has a melt flow index of 0.5 to 4.5 g/10 minutes (2.16 kg, 190℃).
본 발명은 성형품으로 제조시 굴곡강도와 변형경화율(strain hardening modulus)이 우수한 다중모드성(multimodal) 폴리에틸렌 수지 조성물 및 이로부터 제조된 성형품에 관한 것으로, 용융흐름지수가 1.0~2.5g/10분(21.6kg, 190℃)인 에틸렌 또는 탄소수가 6~20인 α-올레핀의 공중합체(A) 20~50중량%; 및 에틸렌 단독 공중합체(B) 50~80중량%;를 포함하는 폴리에틸렌 수지 조성물로서, 상기 폴리에틸렌 수지 조성물의 용융흐름지수가 0.5~4.5g/10분(2.16kg, 190℃)인 폴리에틸렌 수지 조성물을 제공한다. |
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