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公开(公告)号：US11608390B2
公开(公告)日：2023-03-21
申请号：US17059704
申请日：2019-05-30
Applicant: Dow Global Technologies LLC
Inventor： Maria Pollard , Robert D. Swindoll , Pradeep Jain , Alec Y. Wang , Jorge Rubalcaba , Shrikant Dhodapkar , Sean W. Ewart , Bradley K. Blanchard , George W. Haun, Jr. , Michael J. Zogg, Jr.
Abstract: Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cm2 and an outlet port pressure of 20 to 200 kgf/cm2; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.
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公开(公告)号：US20150148490A1
公开(公告)日：2015-05-28
申请号：US14141835
申请日：2013-12-27
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Mridula Kapur , Mehmet Demirors , Pradeep Jain , Philip P. Fontaine , Douglas S. Ginger , David T. Gillespie , Mustafa Bilgen
IPC: C08L23/08
CPC classification number: C08J5/18 , B65D51/26 , C07F5/00 , C07F7/1804 , C08F4/64186 , C08F210/14 , C08F210/16 , C08F2500/03 , C08J2323/08 , C08J2423/08 , C08L23/02 , C08L23/06 , C08L23/08 , C08L23/0815 , C08L2203/16 , C08L2205/02 , C08L2205/025 , C08L2205/03 , Y02P20/582 , C08F4/64193 , C08F2500/09 , C08F2500/12
Abstract: The instant invention provides a polyolefin composition suitable for packaging applications, films, multilayer structures and packaging devices made therefrom. The polyolefin composition according to the present invention comprises: an ethylene/α-olefin interpolymer composition comprising (a) from 50 to 75 percent by weight of a first ethylene/α-olefin copolymer fraction having a density in the range of 0.894 to 0.908 g/cm3, a melt index (I2) in the range of from 0.2 to 1 g/10 minutes, and (b) from 25 to 50 percent by weight of a second ethylene/α-olefin copolymer fraction, and wherein said ethylene/α-olefin interpolymer composition has a density in the range of 0.910 to 0.924 g/cm3, a melt index (I2) in the range of from 0.5 to 2 g/10 minutes, a zero shear viscosity ratio (ZSVR) in the range of from 1.15 to 2.5, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (Mw/Mn) in the range of from 2.0 to 4.0, and tan delta at 0.1 radian/second and 190° C. in the range of from 6 to 43.
Abstract translation: 本发明提供一种适用于包装应用，薄膜，多层结构和由其制成的包装装置的聚烯烃组合物。 根据本发明的聚烯烃组合物包含：乙烯/α-烯烃互聚物组合物，其包含（a）50至75重量％的密度在0.894至0.908g范围内的第一乙烯/α-烯烃共聚物部分 / cm 3，熔体指数（I 2）在0.2〜1g / 10分钟的范围内，和（b）25〜50重量％的第二乙烯/α-烯烃共聚物部分，其中所述乙烯/ α-烯烃互聚物组合物的密度范围为0.910〜0.924g / cm3，熔体指数（I2）为0.5〜2g / 10分钟，零剪切粘度比（ZSVR）为 1.15至2.5，分子量分布表示为重均分子量与数均分子量（Mw / Mn）的比值在2.0至4.0的范围内，tanδ在0.1弧度/秒和190℃ 在6到43的范围内。
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公开(公告)号：US20150112005A1
公开(公告)日：2015-04-23
申请号：US14569956
申请日：2014-12-15
Applicant: Dow Global Technologies LLC
Inventor： Anthony J. Castelluccio , Jeffrey J. Dean , Alec Y. Wang , Lindsey A. Clark , Pradeep Jain , Roger L. Kuhlman , Angela N. Taha , Larry S. Green , Gary R. Marchand , Sean W. Ewart , Jeffrey A. Sims , Chris E. Blaschke , Brandon Fails
IPC: C08F210/14 , C08K5/17 , C08K5/52 , C08K5/098 , C08K5/12
CPC classification number: C08F210/14 , C08F6/02 , C08F210/16 , C08F297/08 , C08F297/083 , C08F2500/03 , C08F2500/08 , C08F2500/11 , C08F2500/12 , C08F2500/19 , C08F2500/20 , C08K5/098 , C08K5/12 , C08K5/17 , C08K5/52 , C08L23/0815 , C08L53/00 , C08L2666/02
Abstract: Improved reaction processes comprise reacting a mixture to form a product comprising a metal alkyl, metal oxide, or mixture thereof and then passing said product to a post-reactor heat exchanger. The improvement comprises one or more of the following: (1) reacting said metal alkyl compound with an acid to produce a soluble metal ester; or (2) adding an ionic surfactant; or (3) adding a mixture comprising an antioxidant to the product under conditions sufficient to avoid formation of significant amounts of insoluble metal or metal compounds derived from said metal alkyl compound; or (4) purging said post-reactor heat exchanger with an inert gas under conditions to remove metal oxide from the post-reactor heat exchanger.
Abstract translation: 改进的反应方法包括使混合物反应形成包含金属烷基，金属氧化物或其混合物的产物，然后将所述产物通入后反应器热交换器。 改进包括以下一个或多个：（1）使所述金属烷基化合物与酸反应以产生可溶性金属酯; 或（2）加入离子表面活性剂; 或（3）在足以避免形成显着量的来自所述金属烷基化合物的不溶性金属或金属化合物的条件下，向产物中加入包含抗氧化剂的混合物; 或（4）在惰性气体下，在从后反应器热交换器中除去金属氧化物的条件下吹扫所述后反应器热交换器。
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公开(公告)号：US20240059876A1
公开(公告)日：2024-02-22
申请号：US18260278
申请日：2022-02-21
Applicant: Dow Global Technologies LLC
Inventor： Yifan Dong , Santosh S. Bawiskar , Teresa P. Karjala , Pradeep Jain , Lori L. Kardos , Michael B. Biscoglio , John P. O'brien , Daniel W. Baugh, III
CPC classification number: C08L23/06 , C08J3/28 , C08L2203/14 , C08L2203/16 , C08L2203/30 , C08L2205/025 , C08L2207/062 , C08L2207/066
Abstract: Irradiation of low-density polyethylene resins with an electron beam produces modified polyethylene resins that have significantly improved melt strength and retain useful melt-index and have few cross-linked gels, if the starting LDPE resin and the level of irradiation are properly selected.
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公开(公告)号：US20210253757A1
公开(公告)日：2021-08-19
申请号：US16973626
申请日：2019-06-13
Applicant: Dow Global Technologies LLC
Inventor： Timothy W. Gambel , Curvel Hypolite , Daniel S. Rynearson , Michael J. Zogg, Jr. , Kyle E. Hart , Michael D. Turner , Jorge Rubalcaba , Pradeep Jain , Mehmet Demirors
Abstract: A method of producing bimodal ethylene-based polymer includes reacting ethylene monomer and C3-C12 α-olefin comonomer in the presence of a first catalyst in an agitated reactor to produce a first polymer fraction, and outputting effluent from the agitated reactor. A second catalyst is added to the effluent downstream of the agitated reactor and upstream from a non-agitated reactor, the second catalyst facilitates production of a second polymer fraction having a density and melt index (I2) different from the first polymer fraction. The second catalyst and effluent are mixed in at least one mixer. The second catalyst, second polymer fraction, and the first polymer fraction are passed to the non-agitated reactor; and additional ethylene monomer, additional C3-C12 α-olefin comonomer, and solvent are passed to the non-agitated reactor to produce more second polymer fraction and thereby the bimodal ethylene-based polymer.
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Patent Agency Ranking
公开(公告)号：US20210246288A1
公开(公告)日：2021-08-12
申请号：US16973639
申请日：2019-06-13
Applicant: Dow Global Technologies LLC
Inventor： Kyle E. Hart , Mehmet Demirors , Timothy W. Gambrel , Philip P. Fontaine , Pradeep Jain
IPC: C08L23/12 , C08F2/00 , C08F2/01 , C08F210/14 , C08F210/16
Abstract: A bimodal ethylene-based polymer, including a high density fraction (HDF) from 3.0% to 25.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C., an I10/I2 ratio from 5.5 to 7.5, wherein I2 is the melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is the melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C., and a short chain branching distribution (SCBD) less than or equal to 10° C., wherein the short chain branching distribution is measured by CEF full width at half height.
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公开(公告)号：US10683398B2
公开(公告)日：2020-06-16
申请号：US15752315
申请日：2016-09-16
Applicant: Dow Global Technologies LLC
Inventor： Shrikant Dhodapkar , Remi A. Trottier , Robert Bellair , Konanur Manjunath , Pradeep Jain , Michael D. Turner
Abstract: A composition is provided that comprises at least the following: polymer particles comprising a coating on at least a portion of the total surface of the polymer particles, and wherein the coating is formed from a powder composition comprising at least one inorganic powder, and at least one organic powder selected from a metal stearate and/or a polymer powder, and wherein the weight ratio of the total amount of the inorganic powder to the total amount of the organic powder is from 3.0 to 50.0.
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公开(公告)号：US10138362B2
公开(公告)日：2018-11-27
申请号：US15311391
申请日：2015-06-26
Applicant: Dow Global Technologies LLC
Inventor： Jian Wang , Pradeep Jain , Mehmet Demirors , Douglas S. Ginger , Anthony J. Castelluccio , Mridula Kapur
IPC: C08F210/16 , C08L23/08 , B32B5/00 , B32B5/02 , B32B7/00 , B32B7/02 , B32B27/06 , B32B27/18 , B32B27/20 , B32B27/28 , B32B27/30 , B32B27/32 , C08J5/18 , A61F13/514 , B32B27/08 , B32B27/12 , C08K3/26 , C08J5/00 , E01C13/08
Abstract: The invention provides a composition comprising a first composition, comprising at least one ethylene-based polymer, and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio I10/I2 that meets the following equation: I10/I2≥7.0−1.2×log (I2). The invention also provides a process to form a composition comprising at least two ethylene-based polymers, said process comprising the following: polymerizing ethylene, and optionally at least one comonomer, in solution, in the presence of a catalyst system comprising a metal-ligand complex of Structure I, as described herein, to form a first ethylene-based polymer; and polymerizing ethylene, and optionally at least one comonomer, in the presence of a catalyst system comprising a Ziegler/Natta catalyst, to form a second ethylene-based polymer.
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公开(公告)号：US20180037727A1
公开(公告)日：2018-02-08
申请号：US15525553
申请日：2015-12-18
Applicant: Dow Global Technologies LLC
Inventor： Thomas W. Karjala , Jorge Rubalcaba , Edward O. Madenjian , Curvel Hypolite , Pradeep Jain
CPC classification number: C08L23/0815 , B01J19/18 , B01J19/2455 , C08L2205/025 , C08L2308/00 , C08F210/18 , C08F2/001 , C08F210/06 , C08F236/20 , C08F2500/25 , C08F2500/03 , C08F2500/17 , C08F2/06
Abstract: The invention provides a process to form a “first composition comprising a first ethylene/α-olefin interpolymer and a second ethylene/α-olefin interpolymer,” said process comprising polymerizing a first mixture comprising ethylene, an α-olefin, and optionally a polyene, in a stirred tank reactor to form a first ethylene/α-olefin interpolymer, and transferring at least some of the first ethylene/α-olefin interpolymer to a loop reactor, and polymerizing, therein, a second mixture comprising ethylene, an alpha-olefin, and optionally a polyene, in the presence of the first ethylene/α-olefin interpolymer, to form the “first composition comprising the first ethylene/α-olefin interpolymer and the second ethylene/α-olefin interpolymer.” The invention also provides a polymerization reactor configuration comprising at least the following: a stirred tank reactor followed by a loop reactor.
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公开(公告)号：US09631059B2
公开(公告)日：2017-04-25
申请号：US14653352
申请日：2013-12-27
Applicant: Dow Global Technologies LLC
Inventor： Mehmet Demirors , Mridula Kapur , Pradeep Jain , Philip P. Fontaine , Douglas S. Ginger , David T. Gillespie , Mustafa Bilgen
CPC classification number: C08J5/18 , B65D51/26 , C07F5/00 , C07F7/1804 , C08F4/64186 , C08F210/14 , C08F210/16 , C08F2500/03 , C08J2323/08 , C08J2423/08 , C08L23/02 , C08L23/06 , C08L23/08 , C08L23/0815 , C08L2203/16 , C08L2205/02 , C08L2205/025 , C08L2205/03 , Y02P20/582 , C08F4/64193 , C08F2500/09 , C08F2500/12
Abstract: The instant invention provides a polyolefin composition suitable for packaging applications, films, multilayer structures and packaging devices made therefrom. The polyolefin composition according to the present invention comprises: an ethylene/α-olefin interpolymer composition comprising (a) from 50 to 75 percent by weight of a first ethylene/α-olefin copolymer fraction having a density in the range of 0.894 to 0.908 g/cm3, a melt index (I2) in the range of from 0.2 to 1 g/10 minutes, and (b) from 25 to 50 percent by weight of a second ethylene/α-olefin copolymer fraction, and wherein said ethylene/α-olefin interpolymer composition has a density in the range of 0.910 to 0.924 g/cm3, a melt index (I2) in the range of from 0.5 to 2 g/10 minutes, a zero shear viscosity ratio (ZSVR) in the range of from 1.15 to 2.5, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (Mw/Mn) in the range of from 2.0 to 4.0, and tan delta at 0.1 radian/second and 190° C. in the range of from 6 to 43.
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