WO2022092704A1 - 폴리에틸렌 - Google Patents
폴리에틸렌 Download PDFInfo
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- WO2022092704A1 WO2022092704A1 PCT/KR2021/014812 KR2021014812W WO2022092704A1 WO 2022092704 A1 WO2022092704 A1 WO 2022092704A1 KR 2021014812 W KR2021014812 W KR 2021014812W WO 2022092704 A1 WO2022092704 A1 WO 2022092704A1
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- polyethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
- C08F2410/02—Anti-static agent incorporated into the catalyst
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2420/00—Metallocene catalysts
- C08F2420/01—Cp or analog bridged to a non-Cp X neutral donor
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2420/00—Metallocene catalysts
- C08F2420/08—Heteroatom bridge, i.e. Cp or analog where the bridging atom linking the two Cps or analogs is a heteroatom different from Si
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
Definitions
- a polypropylene resin was mixed with a polyethylene resin, and a bicomponent fiber using a polypropylene resin for the inside and a polyethylene resin for the outside was produced to improve the feel and softness and used as a nonwoven material.
- a bicomponent fiber using a polypropylene resin for the inside and a polyethylene resin for the outside was produced to improve the feel and softness and used as a nonwoven material.
- polyethylene used for the bi-component fiber it is further required to develop polyethylene with a narrow molecular weight distribution and reduced dust generation in order to secure excellent tensile strength and ductility.
- the present invention has a narrow molecular weight distribution within a similar melt index (MI) range and a low crystallinity, so that the entanglement contribution of molecules (Effective Number of Physical Cross-link) increases, and fluff during stretching processing Alternatively, the degree of dust generation is reduced to provide polyethylene with improved abrasion resistance.
- MI melt index
- the degree of dust generation is reduced to provide polyethylene with improved abrasion resistance.
- the polyethylene according to the present invention when used, it can be usefully applied to the manufacture of textile products such as diapers, masks, various sanitary materials, medical fibers, and other general consumer goods.
- samples of polyethylene were evaluated using a Waters PL-GPC220 instrument using a Polymer Laboratories PLgel MIX-B 300 mm long column.
- the evaluation temperature was 160 °C
- 1,2,4-trichlorobenzene was used as a solvent, and the flow rate was measured at a rate of 1 mL/min.
- the sample was prepared at a concentration of 10 mg/10 mL, and then supplied in an amount of 200 ⁇ L.
- the values of Mw and Mn were determined using a calibration curve formed using polystyrene standards.
- the molecular weight of the polystyrene standard was 2,000 / 10,000 / 30,000 / 70,000 / 200,000 / 700,000 / 2,000,000 / 4,000,000 / 10,000,000.
- the polyethylene may be, for example, a copolymer of ethylene and alpha olefin.
- the alpha olefin is propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-eicosene, norbornene, norbornadiene, ethylidene noboden, phenyl noboden, vinyl noboden, dicyclopentadiene, 1,4-butadiene, 1,5- It may be one containing pentadiene, 1,6-hexadiene, styrene, alpha-methylstyrene, divinylbenzene and 3-chloromethylstyrene.
- the polyethylene may be a copolymer of ethylene and alpha olefin.
- R 1 to R 4 are each independently hydrogen, C 1-20 alkyl, C 3-20 cycloalkyl, or C 6-20 aryl, or R 1 and R 2 or R 3 and R 4 are bonded to each other to be substituted or to form an unsubstituted C 6-60 aromatic ring,
- C 1-20 alkoxy is a methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, iso-butoxy group, tert-butoxy group, n-pentoxy group, iso- a pentoxy group, a neo-pentoxy group, or a cyclohexoxy group, but is not limited thereto.
- it may be an alkylaryl such as methylphenyl, ethylphenyl, methylbiphenyl, or methylnaphthyl, and may be an arylalkyl such as phenylmethyl, phenylethyl, biphenylmethyl, or naphthylmethyl.
- it may be an alkenyl such as allyl, allyl, ethenyl, propenyl, butenyl, pentenyl.
- the metallocene compound is used, the high melt index of polyethylene is maintained, low molecular weight components are reduced, the molecular weight distribution is narrowed, and the SCB content is increased to increase the entanglement contribution of molecules (Effective Number of Physical Cross-link). Therefore, it is possible to manufacture polyethylene having excellent abrasion resistance.
- Q may be a C 2-20 heterocyclic ring comprising at least one selected from the group consisting of substituted or unsubstituted N, O and S,
- the metallocene compound represented by Formula 1 is the same as X 1 and X 2 , for example, the metallocene compound may be prepared by a manufacturing method as shown in Scheme 1 below, but is not limited thereto, and known organic compounds and metallocene compounds It can be manufactured according to the manufacturing method of The manufacturing method may be more specific in Preparation Examples to be described later.
- a carrier having a hydroxyl group, a silanol group, or a siloxane group having a high reactivity on the surface may be used, and for this purpose, the surface is modified by calcination, or moisture is removed from the surface by drying.
- silica prepared by calcining silica gel, silica dried at high temperature, silica-alumina, and silica-magnesia may be used, and these are typically Na 2 O, K 2 CO 3 , BaSO 4 , and Mg(NO 3 ). 2 and the like oxide, carbonate, sulfate, and nitrate components.
- D is aluminum or boron
- A is each independently C 6-20 aryl or C 1-20 alkyl in which one or more hydrogen atoms are substituted with halogen, C 1-20 hydrocarbyl, C 1-20 alkoxy, or phenoxy.
- the compound represented by Formula 3 is not particularly limited as long as it is an alkyl metal compound, but for example, trimethylaluminum, triethylaluminum, triisobutylaluminum, tripropylaluminum, tributylaluminum, dimethylchloroaluminum, triisopropylaluminum, Tri-s-butylaluminum, tricyclopentylaluminum, tripentylaluminum, triisopentylaluminum, trihexylaluminum, trioctylaluminum, ethyldimethylaluminum, methyldiethylaluminum, triphenylaluminum, tri-p-tolylaluminum, dimethyl aluminum methoxide, dimethyl aluminum ethoxide, trimethyl boron, triethyl boron, triisobutyl boron, tripropyl boron, tributyl boron, etc., preferably selected from
- the catalyst composition including the metallocene compound of Formula 1 according to the present invention exhibits high activity as described above during copolymerization of ethylene and alpha-olefin, without excessively increasing the content of alpha-olefin as a comonomer. It is possible to increase the content of short chain branch (SCB) in the molecule together with the high molecular weight.
- SCB short chain branch
- Polyethylene was prepared in the same manner as in Example 1, except that the supported catalyst of Preparation Examples 2 to 6 was used instead of the supported catalyst of Preparation Example 1.
- the weight average molecular weight (Mw) and number average molecular weight (Mn) of polyethylene are measured using gel permeation chromatography (GPC, gel permeation chromatography, manufactured by Water), and the molecular weight distribution (MWD) by dividing the weight average molecular weight by the number average molecular weight , Mw/Mn) was calculated.
- GPC gel permeation chromatography
- Mw/Mn molecular weight distribution
- a rectangular specimen having a thickness of 0.5 mm, a width of 6 mm, and a length of 30 mm was prepared by applying pressure to the polyethylene samples of Examples and Comparative Examples at 190°C.
- a polyethylene specimen was mounted on a Q800 DMA of TA Instruments, and the storage modulus E′ and the loss modulus E′′ were measured by applying periodic deformation while raising the temperature from -80°C to 140°C at a rate of 5°C per minute.
- tan(delta) which is a value obtained by dividing the loss modulus at each temperature by the storage modulus, is obtained, the temperature at which tan(delta) is the maximum is the crystal relaxation temperature.
- the melt temperature was 210 °C
- the screw speed was 120 rpm
- the die was held at 210 °C
- the primary air temperature and pressure were 270 °C and 54 kPa (7.8 psi), respectively
- the polymer throughput rate was 5.2 kg/hr.
- the collector/die distance was 15.0 cm. While the microfine fibers spun from the outlet fell to the collector, they were cooled with cooling air using two pumps, and the microfine fibers collected at the collector were used with upper and lower rolls to prepare a nonwoven fabric by a calendar process. At this time, the temperature of the cooling wind was 16 °C, and the temperature of the upper/lower rolls during the calendar process was 160 °C/155 °C, respectively.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
| MI2.16
(g/10min) |
MWD | Crystallinity (%) |
Tcr
(℃) |
MFRR (MI5/MI2.16) | 밀도 (g/cm3) |
내마모강도 (mg/cm3) |
|
| 실시예 1 | 19.2 | 2.45 | 63 | 43.3 | 2.54 | 0.952 | 0.1 |
| 실시예 2 | 19.5 | 2.46 | 68 | 46 | 2.52 | 0.953 | 0.12 |
| 실시예 3 | 18.9 | 2.39 | 70 | 48 | 2.53 | 0.954 | 0.14 |
| 실시예 4 | 20 | 2.38 | 65 | 44 | 2.50 | 0.951 | 0.11 |
| 실시예 5 | 24.4 | 2.45 | 71 | 46.2 | 2.66 | 0.955 | 0.12 |
| 실시예 6 | 29.7 | 2.35 | 69 | 46.8 | 2.54 | 0.951 | 0.13 |
| 비교예 1 | 19.4 | 2.79 | 65 | 42.9 | 2.71 | 0.950 | 0.22 |
| 비교예 2 | 19.6 | 2.71 | 71 | 49.1 | 2.71 | 0.955 | 0.3 |
| 비교예 3 | 28.1 | 2.64 | 66 | 45.5 | 2.70 | 0.954 | 0.25 |
| 비교예 4 | 30.8 | 2.61 | 70 | 45.7 | 2.69 | 0.954 | 0.26 |
| 비교예 5 | 18.3 | 2.47 | 74 | 51.5 | 2.58 | 0.954 | 0.33 |
Claims (10)
- 하기 1) 내지 4)의 조건을 만족하는 폴리에틸렌:1) 190℃, 2.16kg의 하중 하에서 ASTM D1238에 따라 측정한 용융 지수(MI)가 0.5 내지 40 g/10min;2) 분자량 분포(MWD)가 2.3 내지 2.6;3) ASTM F2625에 따라 DSC(Differential Scanning Calorimeter)를 이용하여 측정한 결정화도(Crystallinity)가 63 내지 71%; 및4) DMA(Dynamic mechanical analysis)를 이용하여 측정한 결정 완화 온도(Tcr, Crystal Relaxation Temperature)가 42 내지 50°C.
- 제1항에 있어서,상기 190℃, 2.16kg의 하중 하에서 ASTM D1238에 따라 측정한 용융 지수(MI)가 18 내지 40 g/10min 인, 폴리에틸렌.
- 제1항에 있어서,ASTM D5264를 참고로 하여 측정한 내마모강도가 0.2 mg/cm3 이하인, 폴리에틸렌.
- 제1항에 있어서,상기 폴리에틸렌은, 에틸렌과 알파 올레핀의 공중합체인, 폴리에틸렌.
- 제4항에 있어서,상기 알파 올레핀은, 프로필렌, 1-부텐, 1-펜텐, 4-메틸-1-펜텐, 1-헥센, 1-헵텐, 1-옥텐, 1-데센, 1-운데센, 1-도데센, 1-테트라데센, 1-헥사데센, 1-에이코센, 노보넨, 노보나디엔, 에틸리덴노보덴, 페닐노보덴, 비닐노보덴, 디사이클로펜타디엔, 1,4-부타디엔, 1,5-펜타디엔, 1,6-헥사디엔, 스티렌, 알파-메틸스티렌, 디비닐벤젠 및 3-클로로메틸스티렌으로 이루어진 군으로부터 선택되는 1종 이상을 포함하는, 폴리에틸렌.
- 제1항에 있어서,하기 화학식 1로 표시되는 메탈로센 화합물을 포함하는 촉매 조성물의 존재 하에, 에틸렌과 알파-올레핀을 공중합하여 제조되는, 폴리에틸렌:[화학식 1]상기 화학식 1에서,B는 붕소이고,M은 4족 전이금속이고,R1 내지 R4는 각각 독립적으로, 수소, C1-20 알킬, C3-20 사이클로알킬, 또는 C6-20 아릴이거나, R1과 R2 또는 R3와 R4가 서로 결합하여 치환 또는 비치환된 C6-60 방향족 고리를 형성하고,R5 및 R6는 각각 독립적으로, C1-20 알킬, C3-20 사이클로알킬, 또는 C6-20 아릴이거나, R5와 R6가 서로 결합하여 C3-60 지방족 고리, 또는 C6-60 방향족 고리를 형성하고,X1 및 X2는 각각 독립적으로, C1-20 알킬 또는 -O(CO)R'이고, 여기서 R'은 C1-20 알킬이고,Q는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상을 포함하는 C2-60 헤테로고리이고,Y와 Y'은 Q를 구성하는 원소이고,Y는 N, O, 또는 S이고,Y'은 Y와 인접한 Q의 원소이고, N 또는 C이다.
- 제6항에 있어서,R1 내지 R4는 각각 독립적으로, 수소, 또는 메틸이거나, R1과 R2 또는 R3와 R4가 서로 결합하여 벤젠 고리, 또는 1,2,3,4-테트라하이드로나프탈렌 고리를 형성하고,여기서 상기 벤젠 고리, 또는 1,2,3,4-테트라하이드로나프탈렌 고리는 비치환되거나, 메틸, 터트뷰틸 및 4-터트뷰틸 페닐로 이루어진 군에서 선택되는 1개 내지 4개의 치환기로 치환된, 폴리에틸렌.
- 제6항에 있어서,R5 및 R6는 각각 독립적으로, 메틸, 또는 페닐이거나, R5와 R6가 서로 결합하여 사이클로옥테인 고리를 형성하는, 폴리에틸렌.
- 제6항에 있어서,하기 화학식 2 내지 화학식 4로 표시되는 화합물로 이루어진 군으로부터 선택된 1종 이상의 조촉매 화합물을 더 포함하는, 폴리에틸렌:[화학식 2]-[Al(R10)-O]a-상기 화학식 2에서,R10은 할로겐; 또는 할로겐으로 치환 또는 비치환된 C1-20 하이드로카빌 이고;a는 2 이상의 정수이고,[화학식 3]D(R11)3상기 화학식 3에서,D는 알루미늄 또는 보론이고;R11는 할로겐; 또는 할로겐으로 치환 또는 비치환된 C1-20 하이드로카빌이고,[화학식 4][L-H]+[ZA4]- 또는 [L]+[ZA4]-상기 화학식 4에서,L은 중성 또는 양이온성 루이스 염기이고;H는 수소 원자이고;Z는 13족 원소이고;A는 각각 독립적으로 1 이상의 수소 원자가 할로겐, C1-20 하이드로카빌, C1-20 알콕시, 또는 페녹시로 치환된 C6-20 아릴 또는 C1-20 알킬이다.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21886698.6A EP4180468A4 (en) | 2020-10-30 | 2021-10-21 | POLYETHYLENE |
| CN202180057180.5A CN116096763B (zh) | 2020-10-30 | 2021-10-21 | 聚乙烯 |
| US18/019,232 US20230272134A1 (en) | 2020-10-30 | 2021-10-21 | Polyethylene |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20200143717 | 2020-10-30 | ||
| KR10-2020-0143717 | 2020-10-30 | ||
| KR10-2021-0140284 | 2021-10-20 | ||
| KR1020210140284A KR102601121B1 (ko) | 2020-10-30 | 2021-10-20 | 폴리에틸렌 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022092704A1 true WO2022092704A1 (ko) | 2022-05-05 |
Family
ID=81384258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2021/014812 Ceased WO2022092704A1 (ko) | 2020-10-30 | 2021-10-21 | 폴리에틸렌 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230272134A1 (ko) |
| EP (1) | EP4180468A4 (ko) |
| CN (1) | CN116096763B (ko) |
| WO (1) | WO2022092704A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014077617A1 (ko) * | 2012-11-19 | 2014-05-22 | 대림산업 주식회사 | 에틸렌과 알파-올레핀의 공중합체 및 그 제조방법 |
| US20150141599A1 (en) * | 2013-11-19 | 2015-05-21 | Chevron Phillips Chemical Company Lp | Catalyst Systems Containing Boron-Bridged Cyclopentadienyl-Fluorenyl Metallocene Compounds With An Alkenyl Substituent |
| WO2016037960A1 (en) * | 2014-09-10 | 2016-03-17 | Sabic Global Technologies B.V. | Boron-bridged 2-indenyl metallocene complexes for olefin polymerization |
| KR20190074963A (ko) * | 2017-12-20 | 2019-06-28 | 주식회사 엘지화학 | 폴리에틸렌 공중합체 및 이의 제조 방법 |
| KR20200101873A (ko) * | 2019-02-20 | 2020-08-28 | 주식회사 엘지화학 | 고가교도를 갖는 폴리에틸렌 및 이를 포함하는 가교 폴리에틸렌 파이프 |
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| EP1605000A4 (en) * | 2003-03-10 | 2008-04-02 | Asahi Kasei Chemicals Corp | ULTRAHOLE MOLECULAR ETHYLENE POLYMER |
| EP3414271B1 (en) * | 2016-02-12 | 2020-11-25 | Dow Global Technologies LLC | Cast films, and articles made therefrom |
| CA3032082A1 (en) * | 2019-01-31 | 2020-07-31 | Nova Chemicals Corporation | Polyethylene compositions and articles with good barrier properties |
-
2021
- 2021-10-21 CN CN202180057180.5A patent/CN116096763B/zh active Active
- 2021-10-21 EP EP21886698.6A patent/EP4180468A4/en active Pending
- 2021-10-21 WO PCT/KR2021/014812 patent/WO2022092704A1/ko not_active Ceased
- 2021-10-21 US US18/019,232 patent/US20230272134A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014077617A1 (ko) * | 2012-11-19 | 2014-05-22 | 대림산업 주식회사 | 에틸렌과 알파-올레핀의 공중합체 및 그 제조방법 |
| US20150141599A1 (en) * | 2013-11-19 | 2015-05-21 | Chevron Phillips Chemical Company Lp | Catalyst Systems Containing Boron-Bridged Cyclopentadienyl-Fluorenyl Metallocene Compounds With An Alkenyl Substituent |
| WO2016037960A1 (en) * | 2014-09-10 | 2016-03-17 | Sabic Global Technologies B.V. | Boron-bridged 2-indenyl metallocene complexes for olefin polymerization |
| KR20190074963A (ko) * | 2017-12-20 | 2019-06-28 | 주식회사 엘지화학 | 폴리에틸렌 공중합체 및 이의 제조 방법 |
| KR20200101873A (ko) * | 2019-02-20 | 2020-08-28 | 주식회사 엘지화학 | 고가교도를 갖는 폴리에틸렌 및 이를 포함하는 가교 폴리에틸렌 파이프 |
Non-Patent Citations (2)
| Title |
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| See also references of EP4180468A4 |
| WENTE, VAN. A. BOONE, C. D.FLUHARTY, E. L: "Manufacture of Superfine Organic Fibers", NAVAL RESEARCH LABORATORIES, 25 May 1954 (1954-05-25) |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4180468A4 (en) | 2024-01-17 |
| US20230272134A1 (en) | 2023-08-31 |
| EP4180468A1 (en) | 2023-05-17 |
| CN116096763B (zh) | 2024-11-19 |
| CN116096763A (zh) | 2023-05-09 |
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