ScienceON 검색
ScienceON '특허' 검색
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Gas Phase Polyethylene Copolymers / Shannon, Porter C. Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm3. The copolymers can also have a DRI/I2 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7° C. to about 80.6° C. and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol % O2 transmission rate of about 150 to about 200 cc/100 in2/24 hr. and hot tack seal initiation temperatures of about 65° C. to 80° C. |
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Gas phase polyethylene copolymers / ExxonMobil Chemical Patents Inc. Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm3. The copolymers can also have a DRI/I2 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7° C. to about 80.6° C. and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol % O2 transmission rate of about 150 to about 200 cc/100 in2/24 hr. and hot tack seal initiation temperatures of about 65° C. to 80° C. |
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GAS PHASE POLYETHYLENE COPOLYMERS / EXXONMOBIL CHEMICAL PATENTS INC. Polyethylene copolymers with a structure that provides improved film properties are provided. The copolymers can have a density of about 0.905 to about 0.911 g/cm. The copolymers can also have a DRI/12 ratio of about 0.0008 to about 0.060, an I2 value of about 0.6 to about 3.8 dg/min, and an I21 value of about 8 to about 57 dg/min. The copolymers having those properties can be produced by introducing ethylene and at least one other olefin comonomer to a single reactor at a comonomer/ethylene mole ratio of about 0.02 to about 0.03 and polymerizing at a temperature of about 76.7°C to about 80.6°C and a pressure of about 1,724 kPa to about 2,413 kPa. The copolymers can be used to make films having a 21 mol% O transmission rate of about 150 to about 200 cc/100 in/24 hr. and hot tack seal initiation temperatures of about 65°C to 80°C. |
ScienceON '논문' 검색
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The Changing Pattern of Wage Returns to Education and its Implications Blackwell Publishing Ltd , 2010 ; Vol. 28 , Issue 6 |
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Reelin Signaling Pathway Genotypes and Alzheimer Disease in a Spanish Population Wolters Kluwer Health, Inc. All rights reserved , 2015 ; Vol. 29 , Issue 2 |
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콩 주요 종자전염 바이러스의 특성 구명 및 피해해석 경북대학교 대학원 , 2023 ; 국내박사 , xii, 154 p. |
ScienceON '보고서' 검색
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측광기 시스템 기술개발 이해영 , 한국전자통신연구원 , 1987 |