[특허]Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom

[미국특허] Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08L-023/08 C08F-004/653 C08F-004/6592 C08F-210/16 C08J-005/18 C08F-004/659
출원번호	US-0072819 (2013-11-06)
등록번호	US-9181370 (2015-11-10)
발명자 / 주소	Sukhadia, Ashish M. McDaniel, Max P. Ding, Errun St. Jean, Guylaine Yang, Qing Hert, Daniel G. Tso, Chung Ching
출원인 / 주소	Chevron Phillips Chemical Company LP
대리인 / 주소	Merchant & Gould P.C.
인용정보	피인용 횟수 : 6 인용 특허 : 67

초록 ▼

Disclosed herein are ethylene-based polymers produced using dual metallocene catalyst systems. These polymers have low densities, high molecular weights, and broad molecular weight distributions, as well as having the majority of the long chain branches in the lower molecular weight component of the polymer, and the majority of the short chain branches in the higher molecular weight component of the polymer. Films produced from these polymers have improved impact and puncture resistance.

대표청구항 ▼

1. An ethylene polymer composition comprising a higher molecular weight component and a lower molecular weight component, wherein: a ratio of the Mp of the higher molecular weight component to the Mp of the lower molecular weight component is in a range from about 5:1 to about 100:1;a number of LCB of the lower molecular weight component is in a range from about 5 to about 50 LCB per million total carbon atoms; anda number of LCB of the higher molecular weight component is less than or equal to about 5 LCB per million total carbon atoms. 2. The polymer composition of claim 1, wherein: the lower molecular weight component has a Mp in a range from about 15 to about 80 kg/mol;the higher molecular weight component has a Mp in a range from about 150 to about 800 kg/mol;a ratio of the number of LCB of the ethylene polymer composition to the number of LCB of the higher molecular weight component, per millions total carbon atoms, is in a range from about 2:1 to about 100:1; anda number of LCB of the ethylene polymer composition is in a range from about 2 to about 30 LCB per million total carbon atoms. 3. The polymer composition of claim 1, wherein the amount of the higher molecular weight component, based on the weight of the ethylene polymer composition, is in a range from about 10 to about 60 area %. 4. The polymer composition of claim 1, wherein the polymer composition has: a melt index of less than or equal to about 0.4 g/10 min;a high load melt index in a range from about 4 to about 30 g/10 min; anda density in a range from about 0.915 to about 0.935 g/cm3. 5. The polymer composition of claim 4, wherein the polymer composition has: a ratio of Mw/Mn in a range from about 8 to about 35;a ratio of Mz/Mw in a range from about 3 to about 6;a Mw in a range from about 120 to about 500 kg/mol;a Mn in a range from about 10 to about 50 kg/mol; or any combination thereof. 6. The polymer composition of claim 1, wherein the polymer composition has: a zero-shear viscosity at 190° C. in a range from about 10,000 to about 500,000 Pa-sec;a CY-a parameter at 190° C. in a range from about 0.20 to about 0.45; anda Tau(η) parameter at 190° C. in a range from about 0.2 to about 2 sec. 7. The polymer composition of claim 1, wherein the polymer composition is an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer. 8. The polymer composition of claim 7, wherein the polymer composition has a reverse comonomer distribution. 9. An article comprising the polymer composition of claim 8. 10. A film comprising the polymer composition of claim 8. 11. A blown film comprising the polymer composition of claim 1. 12. The film of claim 11, wherein the film has a dart impact strength greater than or equal to about 300 g/mil. 13. The film of claim 12, wherein the polymer composition comprises an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, an ethylene/1-octene copolymer, or a combination thereof, and is characterized by: a reverse comonomer distribution;a density in a range from about 0.915 to about 0.935 g/cm3; anda ratio of Mw/Mn in a range from about 8 to about 35. 14. The film of claim 12, wherein the film has: a dart impact strength in a range from about 400 to about 2000 g/mil;a haze of greater than or equal to about 55%;a MD shrink at 250° F. in a range from about 20 to about 70%;a MD Elmendorf tear strength in a range from about 10 to about 150 g/mil; anda kinetic COF in a range from about 0.3 to about 0.5. 15. The polymer composition of claim 1, wherein the polymer composition has: a density in a range from about 0.913 to about 0.93 g/cm3;a ratio of Mw/Mn in a range from about 6 to about 20; anda Mn in a range from about 10 to about 25 kg/mol. 16. An article comprising the polymer composition of claim 15. 17. A blown film comprising the polymer composition of claim 15, wherein the film has a dart impact strength greater than or equal to about 300 g/mil. 18. The polymer composition of claim 15, wherein the polymer composition is an ethylene/α-olefin copolymer characterized by: a reverse comonomer distribution; anda high load melt index in a range from about 3 to about 60 g/10 min. 19. The polymer composition of claim 18, wherein: the ratio of the Mp of the higher molecular weight component to the Mp of the lower molecular weight component is in a range from about 7:1 to about 20:1;the number of LCB of the lower molecular weight component is in a range from about 5 to about 15 LCB per million total carbon atoms; andthe number of LCB of the higher molecular weight component is less than or equal to about 3 LCB per million total carbon atoms. 20. An article comprising the polymer composition of claim 19. 21. A blown film comprising the polymer composition of claim 19, wherein the film has a dart impact strength in a range from about 400 to about 2000 g/mil.

이 특허에 인용된 특허 (67) 인용/피인용 타임라인 분석

Jensen,Michael D.; Hawley,Gil R.; McDaniel,Max P.; Crain,Tony; Benham,Elizabeth A.; Martin,Joel L.; Yang,Qing, Acidic activator-supports and catalysts for olefin polymerization.
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Kaneko Toshiyuki,JPX ; Sato Morihiko,JPX, Catalyst for olefin polymerization and process for producing olefin polymers.
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Yang, Qing; Jayaratne, Kumudini C.; Jensen, Michael D.; McDaniel, Max P.; Martin, Joel L.; Thorn, Matthew G.; Lanier, Jerry T.; Crain, Tony R., Dual metallocene catalysts for polymerization of bimodal polymers.
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Krishnaswamy, Rajendra K.; Yang, Qing, HDPE resins for use in pressure pipe and related applications.
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Ewen John A. (Houston TX), Hafnium metallocene catalyst for the polymerization of olefins.
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McDaniel, Max P.; Thorn, Matthew G.; Benham, Elizabeth A., Half-metallocene catalyst compositions and their polymer products.
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McDaniel, Max P.; Thorn, Matthew G.; Benham, Elizabeth A., Half-metallocene catalyst compositions and their polymer products.
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McDaniel, Max P.; Thorn, Matthew G.; Benham, Elizabeth A., Half-metallocene catalyst compositions and their polymer products.
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Reed Marion G. (Hacienda Heights CA) Jaffe Joseph (Berkeley CA), Hydrocarbon hydroconversion process employing hydroxy-aluminum stabilized catalysts supports.
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McDaniel, Max P.; Sukhadia, Ashish M.; Ding, Errun; Tso, Chung Ching; Masino, Albert P.; Yang, Qing; Guatney, Lloyd W.; St. Jean, Guylaine; Hert, Daniel G., Low density polyolefin resins and films made therefrom.
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Collins, Kathy S.; Palackal, Syriac J.; McDaniel, Max P.; Jensen, Michael D.; Hawley, Gil R.; Farmer, Kenneth R.; Wittner, Christopher E.; Benham, Elizabeth A.; Eaton, Anthony P.; Martin, Joel L., Organometal catalyst compositions.
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Max P. McDaniel ; James B. Kimble ; Kathy S. Collins ; Elizabeth A. Benham ; Michael D. Jensen ; Gil R. Hawley ; Joel L. Martin, Organometal catalyst compositions.
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Max P. McDaniel ; Kathy S. Collins ; Anthony P. Eaton ; Elizabeth A. Benham ; Michael D. Jensen ; Joel L. Martin ; Gil R. Hawley, Organometal catalyst compositions.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom 원문보기

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[미국특허] Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom 원문보기

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