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COMPOSITIONS SUITABLE FOR MANUFACTURING POLYETHYLENE FOAM, AND ARTICLES THEREOF / Dow Global Technologies LLC A composition suitable for making uncrosslinked polyethylene foam and an uncrosslinked polyethylene foam comprising: 50-95 wt. % of a low density polyethylene having a density ranging from 0.915 to 0.930 g/cc and melt index of 1-4 g/10 min; and 5-50 wt. % of an ethylene/alpha-olefin interpolymer having: a density ranging from 0.910-0.930 g/cc; a melt index ranging from 0.5 to 6.0 g/10 min; a Mw/Mn of from 2.8 to 4.5; and a ZSVR of 1.8 to 10.0. |
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Compositions suitable for manufacturing polyethylene foam, and articles thereof / Dow Global Technologies LLC A composition suitable for making uncrosslinked polyethylene foam and an uncrosslinked polyethylene foam comprising: 50-95 wt. % of a low density polyethylene having a density ranging from 0.915 to 0.930 g/cc and melt index of 1-4 g/10 min; and 5-50 wt. % of an ethylene/alpha-olefin interpolymer having: a density ranging from 0.910-0.930 g/cc; a melt index ranging from 0.5 to 6.0 g/10 min; a Mw/Mn of from 2.8 to 4.5; and a ZSVR of 1.8 to 10.0. |
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폴리프로필렌계 복합재 / 주식회사 엘지화학 본 발명에서는 (A) 폴리프로필렌, 및 (B) 하기 (b1) 내지 (b4)의 요건을 충족하는 올레핀계 중합체를 포함함으로써, 별도의 첨가제를 사용하지 않고도 우수한 강도 특성과 함께 충격 강도 특성, 특히 저온에서 현저히 개선된 충격 강도 특성을 나타낼 수 있는 폴리프로필렌계 복합재가 제공된다:(b1) 밀도(d): 0.850 g/cc 내지 0.910 g/cc, (b2) 용융지수(MI, 190 ℃, 2.16 kg 하중 조건): 0.1g/10min 내지 100g/10min, (b3) 분자량 분포(MWD): 1.5 내지 3.0, (b4) i) 온도상승 용리 분별 측정시 -20℃ 내지 120℃ 온도 범위에서 2개의 피크를 가지며, ii) T(90)-T(50) ≥ 60℃ (여기서, T(90)은 올레핀계 중합체의 90중량%가 용출되는 온도이고, T(50)은 올레핀계 중합체의 50중량%가 용출되는 온도이다). |
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Process for Forming a Rotational Molded Article / Cooper, Russell T. The present disclosure provides a process. The process includes providing a blend containing (A) a first powder including (i) a polyolefin having a density from 0.860 g/cc to 0.910 g/cc, and a melt index from 1.5 g/10 min to 1,000 g/10 min; (ii) from 1 wt % to 15 wt % of a dispersant selected from an acrylic dispersant, a poloxamer, and combinations thereof; and (iii) optionally, a polyolefin wax, the first powder having a mean volume average particle size from 1 μm to 300 μm; and (B) a second powder including an ethylene/α-olefin copolymer having (i) a density from 0.920 g/cc to 0.955 g/cc; and (ii) a melt index from 1.0 g/10 min to 15 g/10 min, the second powder having a mean volume average particle size from 325 μm to 4,000 μm; and rotational molding the blend to form a rotational molded article. |
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COMPOSITIONS SUITABLE FOR MANUFACTURING POLYETHYLENE FOAM, AND ARTICLES THEREOF / LI BIN A composition suitable for making uncrosslinked polyethylene foam and an uncrosslinked polyethylene foam comprising: 50-95 wt. ％of a low density polyethylene having a density ranging from 0.915 to 0.930 g/cc and melt index of 1-4 g/10 min; and 5-50 wt.％of an ethylene/alpha-olefin interpolymer having: a density ranging from 0.910 –0.930 g/cc; a melt index ranging from 0.5 to 6.0 g/10 min; a Mw/Mn of from 2.8 to 4.5; and a ZSVR of 1.8 to 10.0. |
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High clarity propylene polymer compositions of improved impact strength / El Paso Polyolefins Company (Paramus NJ 02) High clarity propylene polymer compositions having improved impact strength are comprised of a blend of a random copolymer of propylene and ethylene, containing from about 1 to about 6 wt % polymerized ethylene, with a linear low density polyethylene in a weight ratio range between about 80:20 and about 95:5. The linear low density polyethylene is a copolymer of ethylene and a C4-C18 alpha-olefin and has a density in the range from about 0.910 to about 0.935 gms/cc. |
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MULTILAYER FILMS FOR USE IN FLEXIBLE PACKAGING MATERIALS / Dow Global Technologies LLC A multilayer film includes a first film including at least a first layer and a second layer, and a second film extrusion coated onto the first layer of the first film. The multilayer film is free of adhesives. The first layer of the first film includes a first high density polyethylene (HDPE) having a density of from 0.935 to 0.965 g/cc and a melt index I2 of 0.3 to 2.0 and the second layer of the first film includes a polyolefin plastomer having a density of from 0.885 to 0.910 g/cc. The second film includes a second high density polyethylene (HDPE) having a density of from 0.945 to 0.965 g/cc and a melt index I?2 #191 of 4.0 to 20.0. The second film has a gloss of from 65% to 95% at 60 according to ASTM D2457. |
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올레핀계 중합체 / 주식회사 엘지화학 본 발명에서는 하기 (1) 내지 (4)의 요건을 충족하여, 인장 강도 등의 기계적 물성의 저하 없이 개선된 충격 강도를 나타낼 수 있는 올레핀계 중합체를 제공한다: (1) 밀도(d): 0.850 내지 0.910 g/cc, (2) 용융지수(MI, 190 ℃, 2.16 kg 하중 조건): 0.1 내지 100 g/10분, (3) 분자량 분포(MWD): 1.5 내지 3.0, (4) 온도상승 용리 분별(TREF; temperature rising elution fractionation) 측정시 -20 ℃ 내지 120 ℃ 온도 범위에서 2개의 피크를 가지며, T(90)-T(50) ≥ 60℃ (여기서, T(90)은 올레핀계 중합체의 90중량%가 용출되는 온도이고, T(50)은 올레핀계 중합체의 50중량%가 용출되는 온도이다) |
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공중합성이 뛰어난 전이금속 촉매를 이용한 올레핀 중합체의 제조 방법 / 주식회사 엘지화학 본 발명은 고온에서도 공중합성이 뛰어난 전이금속 화합물을 이용하여 올레핀 중합체를 제조하는 방법에 관한 것이다. 본 발명의 촉매로 사용된 전이금속 화합물은 퀴놀린계 또는 인돌린계 아미도 그룹이 도입된 모노씨클로펜타디에닐 리간드가 배위된 4족 전이금속 화합물로, 상기 전이금속 화합물은 퀴놀린계 또는 인돌린계 아미도 그룹에 의해 금속 자리 주위가 견고한 오각 고리 구조를 이루어 고온에서도 매우 안정하고, 구조적으로 입체 장애가 큰 공단량체의 접근이 용이하다. 상기 전이금속 화합물을 포함하는 촉매 조성물을 사용하여 에틸렌과 입체 장애가 큰 단량체의 공중합에 적용하는 경우에는 고분자량이면서도 0.910 g/cc 미만의 폴리올레핀 공중합체의 제조가 가능할 뿐만 아니라, 고온에서 밀도 0.858 g/cc에 이르는 초저밀도 폴리올레핀 공중합체를 제조할 수 있다. |
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MULTILAYER FILMS FOR USE IN FLEXIBLE PACKAGING MATERIALS / DOW GLOBAL TECHNOLOGIES LLC A multilayer film includes a first film including at least a first layer and a second layer, and a second film extrusion coated onto the first layer of the first film. The multilayer film is free of adhesives. The first layer of the first film includes a first high density polyethylene (HDPE) having a density of from 0.935 to 0.965 g/cc and a melt index I2 of 0.3 to 2.0 and the second layer of the first film includes a polyolefin plastomer having a density of from 0.885 to 0.910 g/cc. The second film includes a second high density polyethylene (HDPE) having a density of from 0.945 to 0.965 g/cc and a melt index I?2#191 of 4.0 to 20.0. The second film has a gloss of from 65% to 95% at 60 according to ASTM D2457. |
ScienceON '논문' 검색
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Double Mutant Analysis with the Large Flower Mutant, <i>ohbana1</i> , to Explore the Regulatory Network Controlling the Flower and Seed Sizes in <i>Arabidopsis thaliana</i> MDPI , 2021 ; Vol. 10 , Issue 9 |
ScienceON '보고서' 검색
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플렉시블 일렉트로닉스를 위한 전면 굴곡이 가능한 0.25mm 두께 이하의 신개념 다층 플렉시블 PCB용 소재, 장비 및 공정기술 개발 김성민 , (주)켐텍 , 2015 |