Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 9047. Отображено 100.
05-01-2012 дата публикации

Halogen-free flame-retardant resin composition, wire and cable

Номер: US20120003473A1
Автор: Akira Suzuki, Hiroshi Kimura, Katsuhisa Shishido, Kenichiro Fujimoto, Kentaro Segawa
Принадлежит: Hitachi Cable Ltd

A halogen-free flame-retardant resin composition includes 100 parts by, weight of base polymer of polyolefin resin, not less than 50 parts by weight and not more than 250 parts by weight of metal hydroxide, not less than 1 part by weight and not more than 50 parts by weight of calcium borate, not less than 1 part by weight and not more than 50 parts by weight of zinc stannate, and less than 30 seconds of burning time after removal of flame in a vertical flame test complying with CODE 895 OR 3 rd edition, appendix 6 of the UIC standard.

Подробнее
Номер записи: 1
12-01-2012 дата публикации

Multi-layer-core golf ball having highly-neutralized polymer outer core layer

Номер: US20120010022A1
Автор: Michael J. Sullivan, Murali Rajagopalan
Принадлежит: Individual

A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is less than the second surface hardness by at least 5 Shore C and less than the inner surface hardness by at least 5 Shore C.

Подробнее
Номер записи: 2
19-01-2012 дата публикации

Olefinic Copolymer Compositions for Viscosity Modification of Motor Oil

Номер: US20120015854A1
Автор: Kirk A. Nass, Periagaram S. Ravishankar
Принадлежит: ExxonMobil Chemical Patents Inc

Lube oil compositions and methods for making the same are provided. The lubricating oil composition can include at least one propylene-based polymer comprising 60 wt % to 98 wt % propylene derived units, other units derived from one or more other alpha olefins, and a base oil. The propylene-based polymer can have a triad tacticity of 90% or more, a heat of fusion of less than 80 J/g, and a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000.

Подробнее
Номер записи: 3
23-02-2012 дата публикации

Phylon Processes of Making Foam Articles Comprising Ethylene/alpha-Olefins Block Interpolymers

Номер: US20120046373A1
Автор: Bee T. Low, Stephen Yausang Cheng
Принадлежит: Individual

Methods of making a foam article comprise the steps of compressing a foam at an elevated temperature in a mold for shaping the foam; and cooling the mold to a temperature greater than room temperature, wherein the foam comprises at least one ethylene/α-olefin block interpolymer. The foam may further comprise an ethylene vinyl acetate copolymer and an additive such as a filler or a crosslinking agent. The ethylene/α-olefin block interpolymers are a multi-block copolymer comprising at least one soft block and at least one hard block.

Подробнее
Номер записи: 4
15-03-2012 дата публикации

Polyethylene composition suitable for the preparation of films and process for preparing the same

Номер: US20120065335A1
Автор: Harald Schmitz, Jennifer Kipke, Jörg AUFFERMANN, Manfred Hecker, Paulus De Lange, Rainer Karer, Shahram Mihan
Принадлежит: BASELL POLYOLEFINE GMBH

A polyethylene composition, in particular suitable for the preparation of films, and a process for preparing the same are described. The polyethylene composition of the invention comprises from 50 to 89% by weight of a first polyethylene component comprising at least one multimodal polyethylene including a plurality of ethylene polymer fractions having distinct molecular weights and comonomer contents, at least one of said plurality of ethylene polymer fractions being prepared by the use of a single site catalyst, and from 50 to 11% by weight of a second polyethylene component comprising a low or medium density polyethylene.

Подробнее
Номер записи: 5
03-05-2012 дата публикации

Polyethylene Moulding Composition

Номер: US20120108752A1
Автор: Bernd Lothar Marczinke, Diana DÖTSCH, Joachim Berthold, Johannes-Gerhard MÜLLER
Принадлежит: BASELL POLYOLEFINE GMBH

A novel polyethylene composition is described. The composition is suitable for manufacturing especially stretched bands or tapes, also coined raffia in the art.

Подробнее
Номер записи: 6
05-07-2012 дата публикации

Hot-melt adhesives with improved adhesion on low-energy surfaces

Номер: US20120171466A1
Автор: Dirk Urbach, Kai Paschkowski, Martin Linnenbrink
Принадлежит: SIKA TECHNOLOGY AG

A hot-melt adhesive composition, the use thereof, and a composite body including the hot-melt adhesive composition. The hot-melt adhesive composition includes a polyolefin P, which is solid at 25° C., a soft resin WH with a softening point between −10° C. and 40° C., and a polar modified polyolefin wax PW.

Подробнее
Номер записи: 7
23-08-2012 дата публикации

Polymer Compositions for Rotational Molding Applications

Номер: US20120214954A1
Автор: Albert P. Masino, Christopher E. Wittner, Elizabeth M. Lanier, Guylaine St. Jean, Jon D. RATZLAFF, Paul J. DesLauriers, QING Yang, Richard M. Buck, Steven J. Secora
Принадлежит: Chevron Phillips Chemical Co LP

A polymer having a density of from about 0.94 g/cm 3 to about 0.96 g/cm 3 and a primary structure parameter 2 (PSP2 value) of greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of equal to or greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A. A polymer having at least one lower molecular weight component and at least one higher molecular weight component and having a PSP2 value of equal to or greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A.

Подробнее
Номер записи: 8
01-11-2012 дата публикации

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

Номер: US20120277380A1
Автор: Colleen M. Tice, Lori L. Kardos, Mehmet Demirors, Rongjuan Cong, Sarah M. Hayne, Teresa P. Karjala
Принадлежит: Dow Global Technologies LLC

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions and blends thereof with one or more polymers, such as LDPE, are useful for making many articles, especially including films.

Подробнее
Номер записи: 9
04-04-2013 дата публикации

Polymer Blends and Films Made Therefrom

Номер: US20130085231A1
Автор: Davey Christopher R., Lue Ching-Tai
Принадлежит: UNIVATION TECHNOLOGIES, LLC

Polymer blends and films made therefrom are provided. The polymer blend can include a first polyethylene having a density of less than about 0.940 g/cm, a melt index (I) greater than 0.75 g/10 min, and a melt index ratio (I/I) of less than 30. The polymer blend can also include a second polyethylene having a density of less than about 0.940 g/cm, a melt index (I) of less than 1 g/10 min, a melt index ratio (I/I) greater than 30, and a molecular weight distribution (Mw/Mn) of less than 4.5. 1. A polymer blend , comprising:{'sup': '3', 'sub': 2', '21', '2, 'a first polyethylene having a density of less than about 0.940 g/cm, a melt index (I) greater than 0.75 g/10 min, and a melt index ratio (I/I) of less than 30; and'}{'sub': 2', '21', '2', 'W', '2', '21, 'a second polyethylene having a density of less than about 0.940 g/cm, a melt index (I) of less than 1 g/10 min, a melt index ratio (I/I) greater than 30, and a molecular weight distribution (Mw/Mn) of less than 4.5, Mand Mn being determined using gel permeation chromatography, density being determined in accordance with ASTM D-792, Ibeing determined using ASTM D-1238E (at 190° C., using a 2.16 kg weight) and Ibeing determined using ASTM D-1238F (at 190° C., using a 21.6 kg weight).'}2. The polymer blend of claim 1 , wherein the melt index (I) of the second polyethylene ranges from about 0.01 g/10 min to about 0.8 g/10 min.3. The polymer blend of claim 1 , wherein the melt index (I) of the second polyethylene ranges from about 0.01 g/10 min to about 0.6 g/10 min.4. The polymer blend of claim 1 , wherein the melt index (I) of the first polyethylene is greater than 1 g/10 min and less than 20 g/10 min.5. The polymer blend of claim 1 , wherein the melt index ratio (I/I) of the second polyethylene ranges from about 33 to about 150 and the molecular weight distribution (Mw/Mn) of the second polyethylene ranges from about 3 to about 4.2.6. The polymer blend of claim 1 , wherein the melt index ratio (I/I) of the second ...

Подробнее
Номер записи: 10
09-05-2013 дата публикации

Method to form an aqueous dispersion of an ionomer-polyolefin blend

Номер: US20130116373A1
Автор: Richard Allen Hayes
Принадлежит: EI Du Pont de Nemours and Co

Disclosed is a method to form an aqueous dispersion comprising a blend composition comprising or consisting essentially of about 75 to about 99.9 weight of an ionomer composition and about 0.1 to about 25 weight % of an ethylene acrylate ester copolymer composition, a grafted polyolefin composition or a combination thereof, the method comprising mixing the solid blend composition with water heated to a temperature from about 80 to about 100° C.

Подробнее
Номер записи: 11
09-05-2013 дата публикации

Propylene polymer compositions

Номер: US20130116385A1
Автор: Caputo Tiziana, Ciarafoni Marco, Massari Paola
Принадлежит: Basell Poliolefine Italia, S.r.l.

A propylene polymer composition comprising: 1. A propylene polymer composition comprising:A) 70-94% wt of a propylene-ethylene copolymer comprising from 2.5 to 5% wt of ethylene derived units; andB) 6-30% wt of a second propylene-ethylene copolymer comprising from 35 to 60% wt of ethylene derived units;said propylene polymer composition having an MFR L according to ISO 1133, condition L, of from 0.1 to 5 g/10 min, and an Intrinsic Viscosity of the fraction soluble in xylene [XSIV] at room temperature from 1 to 4.5 dl/g.2. The propylene polymer composition according to having a Flexural Modulus of between 300 MPa and 500 MPa.3. The propylene polymer composition according to wherein the component A) is a propylene-ethylene copolymer comprising from 3.1 to 5% wt of ethylene derived units.4. The propylene polymer composition according to wherein the component B) is a propylene-ethylene copolymer comprising from 41 to 55% wt of ethylene derived units.5. A film comprising a propylene polymer composition according to .6. A moulded article comprising a propylene polymer composition according to . This application is the U.S. national phase of International Application PCT/EP2011/057475, filed May 10, 2011, claiming priority to European Patent Application 10163355.0 filed May 20, 2010, and the benefit under 35 U.S.C. 119(e) of U.S. Provisional Application No. 61/396,478, filed May 27, 2010; the disclosures of International Application PCT/EP2011/057475, European Patent Application 10163355.0 and U.S. Provisional Application No. 61/396,478, each as filed, are incorporated herein by reference.The present invention relates to a propylene polymer composition having an optimum balance of properties in particular an improved balance of mechanical properties and excellent physical properties.The propylene polymer composition of the present invention is particularly suitable for the production of injection moulded articles and films. For this particular application is very needed ...

Подробнее
Номер записи: 12
27-06-2013 дата публикации

Resin compositions for extrusion coating

Номер: US20130164552A1
Автор: Jian Wang
Принадлежит: Dow Global Technologies LLC

A composition of matter suitable for use in extrusion coating applications is disclosed. The composition comprises a blend of particular LLDPE with particular LDPE. The LLDPE has the following characteristics: a density in the range of from 0.89 g/cc to 0.97 g/cc; an MWD less than 2.8; a melt index (I 2 ) in the range of 4.0 to 25 g/10 min; a Comonomer Distribution Constant in the range of from greater than from 45 to 400; and a vinyl unsaturation of less than 0.12 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition. The LDPE has a melt index (I 2 ) in the range of 0.1 to 15 g/10 min, and has a melt strength which satisfies the inequality: Log Melt strength (cN)> 1.14−0.6 ×Log I 2 (g/ 10 min, 190 ° C.)

Подробнее
Номер записи: 13
18-07-2013 дата публикации

Golf Ball Including A Blend Of Highly Neutralized Acid Polymers And Method Of Manufacture

Номер: US20130184102A1
Автор: Arthur Molinari, Chen-Tai Liu, Chien-Hsin Chou, Hideyuki Ishii, Yasushi Ichikawa
Принадлежит: Nike Inc

A golf ball having a core layer, a mantle layer enclosing the core layer, and a cover layer enclosing the mantle layer. At least one of the layers includes a blend of at least two highly neutralized acid polymers having low flexural moduli. The relative proportion of one highly neutralized acid polymer to the other highly neutralized acid polymer is between about 10:90 and about 90:10.

Подробнее
Номер записи: 14
22-08-2013 дата публикации

ETHYLENE POLYMER BLENDS AND ORIENTED ARTICLES WITH IMPROVED SHRINK RESISTANCE

Номер: US20130216736A1
Автор: Martin Jill M., Sandkuehler Peter
Принадлежит: Dow Global Technologies LLC

The invention provides an oriented article, for example, a yarn, tape or filaments made from a three component polymer blend. 1. An oriented article that is fabricated from a polymeric blend comprising:{'sup': '3', 'sub': '2', '(a) 20 to 50 parts of a first component (A) comprising a homogeneous ethylene polymer having a density between 0.85 and 0.90 gm/cm, and a Mw/Mn less than 3, and a melt index (I) between 0.5 and 5 gm/10 minutes; and'}{'sup': '3', 'sub': '2', '(b) 30 to 80 parts of a second component (B) comprising a heterogeneous branched ethylene polymer having a density between 0.91 and 0.945 gm/cm, and a Mw/Mn greater than 3.5, and a melt index (I) between 0.5 and 10 gm/10 minutes; and'}{'sup': '3', 'sub': '2', '(c) 2 to 25 parts of a third component (C) comprising an ethylene polymer having a density greater than 0.945 gm/cm, and a melt index (I) between 0.01 and 10 gm/10 minutes.'}2. The article of wherein the polymeric blend has a relationship between stiffness claim 1 , in cN/tex/mm claim 1 , and density claim 1 , in g/cm claim 1 , such that stiffness≦4.8364(density)−4.3324.3. The article of in the form of a woven or cross-laid composite sheet.4. The article of in the form of monofilaments.5. The article of in the form of artificial turf.6. The article of in the form of a bi-axially oriented film.7. The article of in the form of a stretch film.8. The article of in which the homogeneous ethylene polymer of the first component is a substantially linear ethylene copolymer.9. The article of in which the homogeneous ethylene polymer of the first component is a linear ethylene copolymer.10. A process for forming the oriented article of in which:(a) the first and second components are blended in situ during the formation of such components in one or more polymerization reactors, to thereby form a blend component (AB), and(b) the third component (C) is formed in separate polymerization reactor(s), and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(c) the ...

Подробнее
Номер записи: 15
10-10-2013 дата публикации

Polymers, Polymer Blends, and Articles Made Therefrom

Номер: US20130266786A1
Автор: Adriana S. Silva, Alan M. Malakoff, Richard W. Halle, Steve A. Best
Принадлежит: ExxonMobil Chemical Patents Inc

Polymer compositions including an ethylene-based polymer having a melt index of from about 0.1 g/10 min to about 5.0 g/10 min; a melt index ratio of from about 15 to about 30; a weight average molecular weight (Mw) of from about 20,000 to about 200,000; a molecular weight distribution (Mw/Mn) of from about 2.0 to about 4.5; and a density of from 0.900 to 0.920 g/cm 3 . Films having a thickness of 1 mil show a difference between the maximum seal strength and the minimum seal strength over the ranges of temperatures between 95.0° C. and 140.0° C. of ≦1.00×10 2 grams/cm.

Подробнее
Номер записи: 16
14-11-2013 дата публикации

LOW GLOSS CAPSTOCK

Номер: US20130303644A1
Автор: Majewski Thomas, Rajaraman Hari
Принадлежит: POLYONE CORPORATION

A low gloss capstock compound is disclosed. The combination of gloss inhibiting agents and polyolefin elastomer added to conventional polyethylene polymer resin achieves a gloss angle at 85° of below 10 GU. Optionally, the compound can also include weathering agents to improve outdoor durability. The compound can be fully formulated or a masterbatch for let-down into polymer to form the fully formulated compound. 1. A low gloss capstock compound , comprising:(a) polyethylene in both pellet form and powder or flake form;(b) polyolefin elastomer;(c) gloss inhibiting agents comprising silica and barium sulfate;wherein when a surface of a strip of the compound is tested according to ASTM D523, D2457, the surface has a Gloss Angle at 85° of less than 10 GU.4. The compound of further comprising colorant.5. The compound of claim 4 , further comprising other additives selected from the group consisting of other antioxidants; biocides; surfactants; intercalated organoclays; other ultraviolet stabilizers; anti-static agents; bonding claim 4 , blowing and foaming agents; dispersants; fillers and extenders; fire and flame retardants and smoke suppressants; fly ash; impact modifiers; initiators; lubricants; micas; plasticizers; processing aids; release agents; silanes claim 4 , titanates and zirconates; slip and anti-blocking agents; stabilizers; stearates; ultraviolet light absorbers; viscosity regulators; waxes; pest repellants; and combinations of them.6. The compound of claim 2 ,wherein the ultra-violet light absorber is 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol;wherein the hindered amine light stabilizer is N,N′,N″,N′″-tetrakis(4,6-bis(butyl-(N-methyl-2,2,6,6-tetramethylpiperidin-4-yl)amino)triazin-2-yl)-4,7-diazadecan-1,10-diamine and Butanedioic acid, dimethyl ester, polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol; andwherein the anti-oxidant is a mixture of Tris(2,4-di-tert-butylphenyl) phosphite and Tetrakis [methylene-3-(3,5-di-tert-butyl-4- ...

Подробнее
Номер записи: 17
21-11-2013 дата публикации

Rotomolding Resin

Номер: US20130310532A1
Автор: Celine Bellehumeur, Mark Hoidas, Yves Lacombe
Принадлежит: Nova Chemicals International SA

Resins suitable for rotomolded articles comprise a bimodal polyethylene copolymer comprising from 0.1 to 5 weight % of one or more C 6-8 alpha olefins and the balance ethylene, comprising from 20 to 50 weight % of a higher molecular weight polymer component having an Mw greater than 120,000 and correspondingly from 80 to 50 weight % of a lower molecular weight polymer component having an Mw less than 100,000 having a density greater than 0.942 g/cc [but less than 0.965 g/cc] and a bent strip ESCR as determined by ASTM D 1693 in 100% Igepal® CO-630 (ethoxylated nonylphenols) for conditions A and B of greater than 1000 hours. The resulting articles have a very good balance of properties and significant ESCR.

Подробнее
Номер записи: 18
02-01-2014 дата публикации

Manufacture of ethylene/carboxylic acid copolymers from renewable materials, copolymers obtained and uses

Номер: US20140005323A1
Автор: Christian Laurichesse, Fabrice R. Chopinez, Jean-Luc Dubois, Samuel Devisme, Thomas Roussel
Принадлежит: Arkema France SA

A process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. Also, copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Подробнее
Номер записи: 19
06-03-2014 дата публикации

Polypropylene-based resin composition and automobile parts using the same

Номер: US20140066562A1
Автор: Byung-Kwon Lim, Choong-Hoon Lee, Don-Ho Kum, Dong-kyu Park, Jong-Chan Lee, Jong-Joo Ha, Kyung-Seok Min, Yang-Kee Kim
Принадлежит: LG Chem Ltd

The present invention provides a polypropylene-based resin composition, which comprises of a) a polypropylene; b) an ethylene 1-octene copolymer in which r 1 r 2 <1 (herein, r 1 =k 11 /k 12 , r 2 =k 22 /k 21 , k 11 is a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is ethylene, k 12 is a growth reaction rate constant when octene is added to a growth chain in which an end active site is ethylene, k 22 is a growth reaction rate constant when octene is added to a growth chain in which an end active site is octene, and k 21 is a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is octene); and c) an inorganic filling agent, and a part for vehicles manufactured by using the same.

Подробнее
Номер записи: 20
13-03-2014 дата публикации

Composition for an refrigerator gasket

Номер: US20140070131A1
Автор: Sung Yull LEE
Принадлежит: Fine Chemical Co Ltd

A composition for a refrigerator gasket is provided. The composition includes, as a polymer base, a blend of an olefin/α-olefin (OAO) copolymer having a melting point of at least 100° C. and a styrene block copolymer (SBC). The polymer base has a melt index (190° C., 5 kg) of 0.01 to 15 g/10 min.

Подробнее
Номер записи: 21
01-01-2015 дата публикации

ENCAPSULATING MATERIAL FOR SOLAR CELL AND SOLAR CELL MODULE

Номер: US20150000739A1
Автор: Ikenaga Shigenobu, Ito Tomoaki, Maruko Nobuhiro, Odoi Masaaki, Takeuchi Fumito
Принадлежит:

An encapsulating material for solar cell is made of a resin composition containing a crosslinkable resin, and satisfies the following 1) and 2). 1) When the encapsulating material for solar cell is immersed in acetone at 23° C. for one hour after a crosslinking treatment in which the encapsulating material for solar cell is heated and depressurized at 150° C. and 250 Pa for three minutes, and then is heated and pressurized at 150° C. and 100 kPa for 15 minutes, an acetone-absorbing ratio is in a range of 3.5 weight % to 12.0 weight % with respect to the weight of the above-described crosslinking-treated encapsulating material for solar cell. 2) A volume resistivity of the above-described crosslinking-treated encapsulating material for solar cell, which is based on JIS K6911 and measured at a temperature of 100° C. with an applied voltage of 500 V, is in a range of 1.0×10Ω·cm to 1.0×10Ω·cm. 1. An encapsulating material for solar cell made of a resin composition containing a crosslinkable resin and satisfying the following 1) and 2):1) when the encapsulating material for solar cell is immersed in acetone at 23° C. for one hour after a crosslinking treatment in which the encapsulating material for solar cell is heated and depressurized at 150° C. and 250 Pa for three minutes, and then is heated and pressurized at 150° C. and 100 kPa for 15 minutes, an acetone-absorbing ratio is in a range of 3.5 weight % to 12.0 weight % with respect to a weight of the crosslinking-treated encapsulating material for solar cell, and{'sup': 13', '18, '2) a volume resistivity of the crosslinking-treated encapsulating material for solar cell, which is based on JIS K6911 and measured at a temperature of 100° C. with an applied voltage of 500 V, is in a range of 1.0×10Ω·cm to 1.0×10Ω·cm.'}2. The encapsulating material for solar cell according to claim 1 , further satisfying the following 3):3) a shore A hardness of the crosslinking-treated encapsulating material for solar cell, which is ...

Подробнее
Номер записи: 22
07-01-2016 дата публикации

ENHANCED ESCR BIMODAL ROTOMOLDING RESIN

Номер: US20160002448A1
Автор: Bellehumeur Celine, Hoidas Mark
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

The present disclosure provides a resin suitable for use in rotational molding having an environmental stress crack resistance of greater than 1000 hours. The resin has a density from 0.937 to 0.942 g/cm, a melt index Idetermined according to ASTM D 1238 (2.16 kg/190° C.—I) from 4.0 to 7.0 g/10 min, an Idetermined according to ASTM D 1238 (21.6 kg/190° C.—I) from 160 to 200 g/10 min, an I/Ifrom 30 to 40 and a terminal vinyl unsaturation greater than 0.06, per 1000 carbon atoms; and a primary structure parameter (PSP2) of from 4 to 7, and an overall Mw/Mn from 2.7 to 3.5 comprising from 2 to 5 weight % of one or more Calpha olefin comonomers. 1. A bimodal polyethylene composition having a density from about 0.935 to about 0.942 g/cm , a melt index Idetermined according to ASTM D 1238 (2.16 kg 190° C.—I) from about 4.0 to about 7.0 g/10 min , and Idetermined according to ASTM D 1238 (21.6 kg 190 C—I) from about 150 to about 210 g/10 min , an I/Ifrom about 28 to about 40 , a bent strip ESCR as determined by ASTM D 1693 in 100% octoxynol-9 for conditions A and B of greater than 1000 hours , a terminal vinyl unsaturation from about 0.07 to about 0.14 per 1000 carbon atoms , an overall Mw/Mn from about 2.8 to about 4.0 , comprising from about 0.1 to about 8 weight % of one or more Calpha olefin comonomers , which when de-convoluted into two components consists of:{'sub': '4-8', 'sup': '3', '(i) from about 20 to about 45 weight % of a first component comprising one or more of Calpha olefin comonomers and the balance ethylene, said component having a density as determined according to ASTM D 792 from about 0.920 to about 0.930 g/cm; a weight average molecular weight (Mw) from about 100,000 to about 180,000 g/mol and a polydispersity of less than 3; and'}{'sub': '4-8', 'sup': 3', '3, '(ii) from about 80 to about 55 weight % of a second component comprising one or more of Calpha olefin comonomers and the balance ethylene said component having a density as determined according ...

Подробнее
Номер записи: 23
05-01-2017 дата публикации

POLYETHYLENE COMPOSITION FOR PIPE APPLICATIONS WITH IMPROVED SAGGING PROPERTIES

Номер: US20170002187A1
Автор: ADHYATMA BHATTAR Mohana Murali, HARJUNTAUSTA Jarmo, Tynys Antti
Принадлежит:

The present invention relates to a polyethylene composition comprising, 115-. (canceled)16. A polyethylene composition comprising , a copolymer of ethylene and at least one comonomer selected from alpha-olefins having from three to twelve carbon atoms,', 'wherein the ethylene copolymer comprises a low molecular weight component (A-1) and a high molecular weight component (A-2) with the low molecular weight component (A-1) having a lower weight average molecular weight than the high molecular weight component (A-2),, 'a base resin (A) comprising'}(B) carbon black in an amount of 1.0 to 10 wt % based on the total amount of the polyethylene composition, and(C) optional further additives other than carbon black;{'sup': 3', '3, 'sub': 5', '2.7/210', '747, 'wherein the base resin (A) has a density of equal to or more than 943 kg/mto equal to or less than 957 kg/m, determined according to ISO 1183, and the composition has a melt flow rate MFR(190° C., 5 kg) of equal to or more than 0.12 g/10 min to equal to or less than 0.20 g/10 min, determined according to ISO 1133, a shear thinning index SHIof equal to or more than 80 to equal to or less than 130 and a viscosity at a constant shear stress of 747 Pa, eta, of equal to or more than 700 kPas to equal to or less than 1200 kPas.'}17. The polyethylene composition according to claim 16 , wherein the low molecular weight component (A-1) is an ethylene homopolymer.18. The polyethylene composition according to claim 16 , wherein the low molecular weight component (A-1) has a melt flow rate MFR(190° C. claim 16 , 2.16 kg) of 200 g/10 min to 400 g/10 min claim 16 , determined according to ISO 1133.19. The polyethylene composition according to claim 16 , wherein the high molecular weight component (A-2) is a copolymer of ethylene and a comonomer selected from alpha-olefins having from three to twelve carbon atoms.20. The polyethylene composition according to claim 16 , wherein the weight ratio of the low molecular weight component (A ...

Подробнее
Номер записи: 24
07-01-2021 дата публикации

ETHYLENE-BASED POLYMER HAVING EXCELLENT LONG-TERM PRESSURE RESISTANCE CHARACTERISTICS, AND PIPE USING SAME

Номер: US20210002463A1
Автор: JEON Tae Uk, JEON Ui Gab, Jeong Dong Wook, KIM Dong Ok, KU II Hwae, Lim Seong Jae, Lim Yu Jeong, PARK Hye Ran
Принадлежит: HANWHA SOLUTIONS CORPORATION

Provided are an ethylene-based polymer having excellent long-term pressure resistance characteristics and a pipe using the ethylene-based polymer. The ethylene-based polymer satisfies the balance of mechanical characteristics and excellent molding processability, as compared with a conventional ethylene-based polymer. Also provided are an ethylene-based polymer having a wide molecular weight distribution and a small lamellar thickness, thereby increasing tie molecules and obtaining excellent long-term pressure resistance characteristics, and a pipe using the same. 1. A high-density ethylene-based polymer produced by polymerization of ethylene and at least one monomer selected from the group consisting of α-olefin-based monomers ,{'sup': 3', '3, 'wherein a density is 0.910 g/cmto 0.960 g/cm,'}an MI is 0.1 g/10 min to 10 g/10 min,a weight average molecular weight (g/mol) is 60,000 to 250,000,a molecular weight distribution (Mw/Mn) is 4 to 6, andan average thickness of lamellar is 1 nm to 15 nm and a lamellar distribution (Lw/Ln) is 1.1 or more.2. The high-density ethylene-based polymer of claim 1 , wherein 50% or more of the lamellar in the high-density ethylene-based polymer has a thickness of less than 1 nm to 10 nm.3. The high-density ethylene-based polymer of claim 1 , wherein less than 40% to 50% of the lamellar in the high-density ethylene-based polymer has a thickness in a range of less than 10 nm to 15 nm.4. The high-density ethylene-based polymer of claim 1 , wherein the high-density ethylene-based polymer comprises a long chain branch (LCB).5. The high-density ethylene-based polymer of claim 1 , wherein the α-olefin-based monomers comprise at least one selected from the group consisting of propylene claim 1 , 1-butene claim 1 , 1-pentene claim 1 , 4-methyl-1-pentene claim 1 , 1-hexene claim 1 , 1-heptene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-undecene claim 1 , 1-dodecene claim 1 , 1-tetradecene claim 1 , 1-hexadecene claim 1 , and 1-aitosen.6. ...

Подробнее
Номер записи: 25
03-01-2019 дата публикации

ETHYLENE ALPHA-OLEFIN COPOLYMERS WITH MULTIMODAL COMONOMER DISTRIBUTIONS AND PROCESSES FOR OBTAINING THE SAME

Номер: US20190002676A1
Автор: Bernardes Arthur Alaim, Brambilla Rodrigo, de Vargas Daiane Schilling, Miranda Márcia Silva Lacerda, Simanke Adriane Gomes
Принадлежит: Braskem S.A.

A polymer composition may include a plurality of ethylene-based polymers forming a multimodal composition distribution, each having a distinct crystallization peak in a CEF curve. A process of making a polymer composition may include melt blending a plurality of polyethylenes with different microstructural characteristics in the molten state. Another process of making a polymer composition may include polymerizing ethylene and an optional alpha olefin in combination with a plurality of metallocene catalysts in a polymerization reactor to form a plurality of ethylene based polymers. Yet another process of making a polymer composition may include polymerizing ethylene and an optional alpha olefin in combination with a multimetal catalyst in a polymerization process to form a plurality of ethylene based polymers. 1. A polymer composition , comprising:a plurality of ethylene-based polymers forming a multimodal composition distribution, each having a distinct crystallization peak in a CEF curve.2. The polymer composition of claim 1 , wherein the distinct crystallization peaks comprise at least two peaks in a range of 40 to 120° C.3. The polymer composition of claim 2 , wherein the at least two peaks are in the range of 40 to 75° C. and 85 to 110° C.4. The polymer composition of claim 3 , further comprising a third peak in the range of 70 to 90° C.5. The polymer composition of claim 1 , wherein the plurality of ethylene-based polymer comprises two or more of:a first polyethylene having an alpha-olefin comonomer content ranging from 0 to 10 wt %;a second polyethylene having an alpha-olefin comonomer content ranging from 10 to 15 wt %; anda third polyethylene having an alpha-olefin comonomer content ranging from 15 to 40 wt %.6. The polymer composition of claim 5 , wherein the first polyethylene is present in an amount ranging from 0 to 30 wt % claim 5 , the second polyethylene is present in an amount ranging from 0 to 60 wt % claim 5 , and the third polyethylene is present ...

Подробнее
Номер записи: 26
27-01-2022 дата публикации

Polyethylene Films

Номер: US20220025135A1
Автор: Farley James M., Holtcamp Matthew W., IMPELMAN Ryan W., Leyva Arturo, Li Dongming, Lue Ching-Tai, McCullough Laughlin G., PEQUENO Richard E., RANGWALLA Hasnain, Silva Adriana S., YOTT Matthew F.
Принадлежит:

Films produced with polyethylene blends having improved stiffness and heat sealing are provided herein. The films may have an average MD/TD 1% secant modulus greater than or equal to about 3300 psi. The films may also have a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or a hot tack seal initiation temperature at 1 N of less than or equal to about 95° C. 1. A film comprising a polyethylene blend , the polyethylene blend comprising two polyethylene compositions , each polyethylene composition having a density , wherein the density of each of the polyethylene compositions differs from the other in an amount between about 0.050 g/cmand about 0.060 g/cm; and further wherein the film has (i) an average MD/TD 1% secant modulus greater than or equal to about 3300 psi and (ii) either (ii-a) a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or (ii-b) a heat seal initiation temperature at 1 N of less than or equal to about 95° C.2. (canceled)3. The film of claim 1 , wherein the polyethylene blend has a density between about 0.918 g/cmand about 0.922 g/cm claim 1 , and further wherein the polyethylene blend has an MI (I) between about 0.90 g/10 min and about 1.10 g/10 min.4. (canceled)5. The film of claim 1 , wherein each of the polyethylene compositions has a density between about 0.890 g/cmand about 0.960 g/cm.6. The film of claim 1 , wherein each of the polyethylene compositions has an MI (I) between about between about 0.1 g/10 min and about 15.0 g/10 min.7. The film of claim 1 , wherein the film has a thickness of about 1 mil or about 3 mil.8. The film of claim 1 , wherein one of the polyethylene compositions of the polyethylene blend has a density of about 0.8961 g/cm claim 1 , and the other polyethylene composition has a density of about 0.9510 g/cm.9. The film of claim 8 , wherein the polyethylene blend comprises the polyethylene composition having a density of about 0.8961 g/cmin an amount between about 55 ...

Подробнее
Номер записи: 27
27-01-2022 дата публикации

METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION AND THERMOPLASTIC RESIN COMPOSITION

Номер: US20220025170A1
Автор: Iwanaga Kentaro, TAKAMORI Yoshihisa
Принадлежит: INOAC CORPORATION

It becomes possible to produce a thermoplastic resin composition having a sea-island structure by a kneading step of kneading a thermoplastic elastomer and/or rubber material having an alkoxysilyl group, in which the alkoxysilyl group is grafted to the thermoplastic elastomer and/or rubber material, and a thermoplastic resin in a melt state in a kneading machine and a dynamic crosslinking step of adding a water component into the kneading machine, forming a silanol group by a hydrolysis reaction of the alkoxysilyl group in the thermoplastic elastomer and/or rubber material having an alkoxysilyl group and the water component in the kneading machine, and subsequently forming a siloxane bond by a condensation reaction between the silanol groups. 1. A thermoplastic resin composition comprising a sea-island structure ,wherein an island structure part of the sea-island structure contains a thermoplastic elastomer and/or rubber material cross-linked by a siloxane bond and a sea structure part of the sea-island structure contains a thermoplastic resin,wherein a gel fraction (in accordance with JIS K 6769: 2004/1SO-15875-2: 2003) of the island structure part is 90% or more, andwherein the blending amount of the thermoplastic resin is 30 to 70 parts by weight relative to 100 parts by weight of the thermoplastic elastomer and rubber material.2. The thermoplastic resin composition according to claim 1 ,wherein the thermoplastic elastomer and/or rubber material is a thermoplastic elastomer in which the main chain and the side chains are formed of saturated bonds, andwherein the thermoplastic resin is a thermoplastic resin in which the main chain and the side chains are formed of saturated bonds.3. The thermoplastic resin composition according to claim 1 ,wherein a viscosity of the thermoplastic elastomer and/or rubber material cross-linked by the siloxane bond is larger than a viscosity of the thermoplastic resin.4. The thermoplastic resin composition according to claim 1 , ...

Подробнее
Номер записи: 28
14-01-2021 дата публикации

Olefin-Based Polymer

Номер: US20210009793A1
Автор: Bae Kyung Bok, Ju Hyun Jin, LEE Choong Hoon, Lee Eun Jung, Park In Sung, Park Sang Eun
Принадлежит: LG CHEM, LTD.

The present invention relates to an olefin-based polymer, which has (1) a density (d) ranging from 0.850 to 0.865 g/cc, (2) a melt index (MI, 190° C., 2.16 kg load conditions) ranging from 0.1 g/10 min to 3.0 g/10 min, and (3) a soluble fraction (SF) of 10 wt % or more at −20° C. in cross-fractionation chromatography (CFC), in which a weight average molecular weight (Mw) of the soluble fraction is in a range of 50,000 g/mol to 500,000 g/mol. The olefin-based polymer according to the present invention exhibits improved anti-blocking properties as a low-density olefin-based polymer. 1. An olefin-based polymer , which has (1) a density (d) ranging from 0.850 to 0.865 g/cc , (2) a melt index (MI , 190° C. , 2.16 kg load conditions) ranging from 0.1 g/10 min to 3.0 g/10 min , and (3) a soluble fraction (SF) of 8 wt % or more at −20° C. in cross-fractionation chromatography (CFC) , in which a weight average molecular weight (Mw) of the soluble fraction is in a range of 50 ,000 g/mol to 500 ,000 g/mol.2. The olefin-based polymer according to claim 1 , wherein the weight average molecular weight (Mw) of the soluble fraction of the olefin-based polymer at −20° C. in cross-fractionation chromatography is in a range of 50 claim 1 ,000 g/mol to 300 claim 1 ,000 g/mol.3. The olefin-based polymer according to claim 1 , wherein the weight average molecular weight (Mw) of the soluble fraction of the olefin-based polymer at −20° C. in cross-fractionation chromatography is in a range of 60 claim 1 ,000 g/mol to 200 claim 1 ,000 g/mol.4. The olefin-based polymer according to claim 1 , wherein the olefin-based polymer has (4) a molecular weight distribution (MWD) in a range of 1.0 to 3.0.5. The olefin-based polymer according to claim 1 , wherein the olefin-based polymer has (5) a weight average molecular weight (Mw) in a range of 10 claim 1 ,000 to 500 claim 1 ,000.6. The olefin-based polymer according to claim 1 , wherein the olefin-based polymer has the (2) melt index (MI) in a range ...

Подробнее
Номер записи: 29
10-01-2019 дата публикации

Polyethylene Compositions Comprising Cyclic-Olefin Copolymers

Номер: US20190010314A1
Автор: Alexander I. NORMAN, Andy H. Tsou, Bethany M. Weike, Dinara R. SUNAGATULLINA, Kimari T.M. Slaughter, Yong Yang
Принадлежит: ExxonMobil Chemical Patents Inc

A composite comprising a polyethylene and within a range from 1 wt % to 25 wt % of at least one cyclic-olefin copolymer by weight of the composition, where the polyethylene may have a density of at least 0.90 g/cm3, and where the cyclic-olefin copolymer has a glass transition temperature (Tg) of at least 30° C. Disclosed also is the feature of orienting the composite to form an oriented article, wherein the article comprises rods having an average length of at least 1 μm, and at least 5 nm in average diameter.

Подробнее
Номер записи: 30
09-01-2020 дата публикации

A PROCESS FOR PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS PREPARED THEREOF

Номер: US20200010655A1
Автор: Äärilä Jari, Kela Jarmo, Nummila-Pakarinen Auli, Tran Anh Tuan
Принадлежит:

The present invention deals with a process for producing a multimodal ethylene polymer composition suitable for producing films by blow moulding. The process comprises (i) copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta polymerisation catalyst to produce a first ethylene homo- or copolymer (PE1) having a density of from 940 to 980 kg/mand a melt flow rate MFRof from 400 to 1000 g/10 min; (ii) copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene copolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene copolymer and a second ethylene copolymer, said first ethylene polymer mixture having a density of from 940 to 980 kg/mand a melt flow rate MFR2 of from 150 to 800 g/10 min, and wherein the MFRof the first ethylene copolymer (PEI) is higher than first ethylene polymer mixture (PEM1) and (iii) copolymerising ethylene and an alpha-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture to produce a second ethylene polymer mixture (PEM2) comprising the first ethylene polymer mixture and a third ethylene copolymer, said second ethylene polymer mixture having a density of from 915 to 925 kg/mand a melt flow rate MFRof from 0.3 to 5 g/10 min. 1. A process for producing multimodal ethylene polymer film compositions comprising the steps of{'sup': '3', 'sub': '2', '(i) copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta polymerisation catalyst to produce a first ethylene copolymer (PE1) having a density of from 940 to 980 kg/mand a melt flow rate MFRof from 400 to 1000 g/10 min;'}{'sup': '3', 'sub': 2', '2, '(ii) copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene copolymer to produce a ...

Подробнее
Номер записи: 31
03-02-2022 дата публикации

POLYOLEFIN RESIN BLENDS FOR HIGH STRESS CRACKING RESISTANCE AND GOOD PROCESSABILITY

Номер: US20220033630A1
Автор: CHEEVASRIRUNGRUANG Watcharee, NANTASETPHONG Wiroj, TRAISILANUN Saranya
Принадлежит:

Polyethylene composition comprising a melt blend, the melt blend comprising: a) a first multimodal polyethylene, the first multimodal polyethylene having a medium weight average molecular weight of a high weight average molecular weight, a density of more than 0.950 to 0.965 g/cmaccording to ISO 1183 and a MFRof 0.3 to 2.0 g/10 min according to ISO 1133; and b) a second multimodal polyethylene, the second multimodal polyethylene having a high weight average molecular weight, a density of 0.940 to 0.950 g/cmaccording to ISO 1183 and a MFRof 0.03 to 0.15 g/10 min according to ISO 1133; wherein the polymer composition has a Full Notch Creep Test (FNCT) according to ISO 16770 of at least 58 hours and a Charpy impact strength at a temperature of 23° C. of at least 4 kJ/maccording to ISO 179. 1. A polyethylene composition comprising a melt blend , the melt blend comprising:{'sup': '3', 'sub': '2', 'a) a first multimodal polyethylene, the first multimodal polyethylene having a medium weight average molecular weight from 90,000 to 200,000 g/mol or a high weight average molecular weight from 200,000 to 1,000,000 g/mol, a density of more than 0.950 to 0.965 g/cmaccording to ISO 1183 and a MFRof 0.3 to 2.0 g/10 min according to ISO 1133; and'}{'sup': '3', 'sub': '2', 'b) a second multimodal polyethylene, the second multimodal polyethylene having a high weight average molecular weight from 200,000 to 1,000,000 g/mol, a density of 0.940 to 0.950 g/cmaccording to ISO 1183 and a MFRof 0.03 to 0.15 g/10 min according to ISO 1133;'}{'sup': '2', 'wherein the polymer composition has a Full Notch Creep Test (FNCT) according to ISO 16770 of at least 58 hours and a Charpy impact strength at a temperature of 23° C. of at least 4 kJ/maccording to ISO 179.'}2. The polyethylene composition according to claim 1 , wherein the polymer composition has a FNCT from 58 to 100 hours.3. The polyethylene composition according to claim 1 , wherein the polyethylene composition has a Charpy impact ...

Подробнее
Номер записи: 32
15-01-2015 дата публикации

Ethylene polymer composition and shaped article of the same

Номер: US20150018491A1
Автор: Yasuo Satoh, Yasuyuki Harada
Принадлежит: Mitsui Chemicals Inc, Prime Polymer Co Ltd

The present invention provides an ethylene polymer composition having a particularly high formability and having an excellent mechanical strength, a shaped article formed of such an ethylene polymer, and a film and multilayer film having a particularly excellent blocking resistance. An ethylene polymer composition (γ) according to the present invention includes a specific ethylene polymer (α) that is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms and an ethylene polymer (β) that is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms but different from the ethylene polymer (α), and weight fraction [Wα] of the ethylene polymer (α) is in the range of not less than 0.1 and not more than 0.9, and weight fraction [Wβ] of the ethylene polymer (β) is in the range of not less than 0.1 and not more than 0.9 (the sum of the Wα and the Wβ is 1.0).

Подробнее
Номер записи: 33
21-01-2021 дата публикации

POLYPROPYLENE COMPOSITION AND MOLDED ARTICLE

Номер: US20210017367A1
Автор: KANNO SHITOSHI, NAKAJIMA Takeshi, Tsukahara Takeshi, TSURUMI NOBUYUKI, YAMAMOTO KUNIO
Принадлежит: BASELL POLIOLEFINE ITALIA S.R.L.

A polypropylene composition made from or containing: 2. The polypropylene composition according to claim 1 , wherein the ethylene-derived unit in component (1) is present at a concentration of 1.8 to 4% by weight claim 1 , based upon the total weight of the propylene/ethylene copolymer.3. The polypropylene composition according to claim 1 , wherein the viscosity ratio is in the range of 0.45 to 0.75.4. The polypropylene composition according to claim 1 , wherein components (1) and (2) are copolymers obtained by polymerizing propylene and ethylene using a catalyst comprising:(a) a solid catalyst comprising magnesium, titanium, a halogen, and an electron donor compound selected from succinate-based compounds, and(b) an organoaluminum compound and(c) optionally an external electron donor compound.5. An injection-molded article comprising the polypropylene composition according to . In general, the present disclosure relates to the field of chemistry. More specifically, the present disclosure relates to polymer chemistry. In particular, the present disclosure relates to polypropylene compositions and molded articles thereof.It is believed that polypropylene is useful in food containers because of polypropylene's physical and hygienic properties. In some instances, polypropylene containers have poor in impact resistance at low temperatures. In some instances, polypropylene containers should have sufficient transparency to reveal the contents of the containers as well as stiffness for shape stability. As such, polypropylene should have a good balance between transparency, impact resistance at low temperatures, and stiffness.[1] In general embodiments, the present disclosure provides a polypropylene composition made from or containing:(i) component (1) made from or containing a propylene/ethylene copolymer containing more than 1.5% by weight and not more than 4% by weight of an ethylene-derived unit, based upon the total weight of the propylene/ethylene copolymer;(ii) ...

Подробнее
Номер записи: 34
25-01-2018 дата публикации

Hdpe

Номер: US20180022905A1
Автор: Andrey Buryak, Ashish Kumar
Принадлежит: Abu Dhabi Polymers Co Ltd Borouge LLC, Borealis AG

A multimodal polyethylene copolymer comprising: (III) 35 to 55 wt % of a lower molecular weight ethylene homopolymer component having an MFR 2 of 200 to 400 g/10 min; (IV) 45 to 65 wt % of a higher molecular weight ethylene copolymer component of ethylene and at least one C3-12 alpha olefin comonomer; wherein said multimodal polyethylene copolymer has a density of 955 to 962 kg/m 3 , an MFR 2 of 2.0 to 10 g/10 min and an Mw/Mn of more than 9.0.

Подробнее
Номер записи: 35
22-01-2015 дата публикации

BIMODAL HIGH-DENSITY POLYETHYLENE RESINS AND COMPOSITIONS WITH IMPROVED PROPERTIES AND METHODS OF MAKING AND USING THE SAME

Номер: US20150025195A1
Автор: Cottle Joshua Allen, Dheur Luc, Gessner Mark Anthony, Sander Robert Ernest
Принадлежит: INEOS Olefins & Polymers USA, a division of INEOS USA LLC

The present disclosure is related to bimodal high-density polyethylene polymer compositions with increased high melt strength and good processability comprising a base resin which has a density of about 945 kg/mto about 955 kg/m, and comprises an ethylene polymer (A) having a density of at least about 968 kg/m, in an amount ranging from 45% to 55% by weight and an ethylene polymer (B) having a density lower than the density of polymer (A) wherein said composition has a complex viscosity at a shear rate of 0.01 rad/s ranging from about 200 to about 450 kPa·s and a complex viscosity at a shear rate of 100 rad/s ranging from about 1900 to about 2500 Pa·s. The present disclosure also relates to methods of making, and using the present compositions, and to articles made from there composition, and preferably to pipes and fittings. 1. A bimodal high-density polyethylene polymer composition comprising a base resin which has a density of about 945 kg/mto about 955 kg/m , preferably 946 to 951 kg/m , most preferably 947 to 951 , and comprises an ethylene polymer (A) having a density of at least about 968 kg/m , preferably above 970 , most preferably above 971 in an amount ranging from about 45% to about 55% by weight , preferably between 47 and 53% by weight , preferably between 48 and 52% by weight , most preferably between 49.5 and 51.5% by weight and an ethylene polymer (B) having a density lower than the density of polymer (A) , wherein said composition has a complex viscosity at a shear rate of 0.01 rad/s ranging from about 200 to about 450 kPa·s , preferably between 220 and 450 kPa·s , most preferably between 220 and 420 kPa·s and a complex viscosity at a shear rate of 100 rad/s ranging from about 1900 to about 2600 Pa·s , preferably from 2000 to 2500 Pa·s , most preferably from 2100 to 2450 Pa·s.2. The polymer composition according to claim 1 , wherein the composition exhibits a viscosity at a constant shear stress of 747 Pa (η*) ranging from about 400 kPa·s to about ...

Подробнее
Номер записи: 36
24-01-2019 дата публикации

AN ETHYLENE/ALPHA-OLEFIN COPOLYMER COMPOSITION, AND ARTICLES COMPRISING THE SAME

Номер: US20190023883A1
Автор: Bastero Amaia, Demirors Mehmet, Fontaine Philip P., Ginger Douglas S., Kapur Mridula, Lopez David, WANG Jian
Принадлежит: Dow Global Technologies LLC

An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition. 1. A pipe fabricated from an ethylene/alpha-olefin copolymer composition having:a) a density from 0.935 to 0.955 g/cc;b) a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10;c) a z-average molecular weight, Mz, of from 200 kg/mol to 500 kg/mol; andd) a PENT value determined according to ASTM F1473-13 of greater than 500 hours at 80° C. and 2.4 MPa;wherein the pipe has a pipe hydrostatic strength, determined according to ISO 1167, of greater than 100 hours at 20° C. and 12.0 MPa as specified in EN 12201-2.2. The pipe of claim 1 , wherein the pipe further exhibits a pipe hydrostatic strength claim 1 , determined according to ISO 1167 claim 1 , of at least 1 claim 1 ,000 hours at 95° C. and 3.6 MPa as specified in ISO 22391-2.3. The pipe of claim 1 , wherein the composition further exhibits a zero shear viscosity ratio claim 1 , ZSVR claim 1 , of from 1.5 to 20.4. The pipe of claim 1 , wherein the composition further exhibits a dynamic viscosity claim 1 , η* claim 1 , at 100 rad/sec and 190° C. of less than 2 claim 1 ,000 Pa-s.5. The pipe of claim 1 , wherein the composition further exhibits a dynamic viscosity claim 1 , η* claim 1 , at 0.1 rad/sec and 190° C. from 10 claim 1 ,000 to 70 claim 1 ,000 Pa-s.6. The pipe of claim 1 , wherein the composition has a density from 0.940 to 0.952 g/cc.7. The pipe of claim 1 , wherein the composition has a ratio of ...

Подробнее
Номер записи: 37
28-01-2021 дата публикации

ETHYLENE INTERPOLYMER PRODUCTS HAVING INTERMEDIATE BRANCHING

Номер: US20210024726A1
Автор: Goyal Shivendra, Kazemi Niousha, Sibtain Fazle, Taylor Kenneth, Zhang Zengrong
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID. 2. The ethylene interpolymer product of claim 1 , wherein said first ethylene interpolymer is synthesized using a homogenous catalyst formulation and said second ethylene interpolymer is synthesized using an intermediate branching catalyst formulation.3. The ethylene interpolymer product of claim 2 , wherein said homogeneous catalyst formulation is an unbridged single site catalyst formulation and said intermediate branching catalyst formulation is an in-line intermediate branching catalyst formulation or a batch intermediate branching catalyst formulation.4. The ethylene interpolymer product of having a melt index from about 0.3 to about 500 dg/minute and a density from about 0.858 to about 0.965 g/cc; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.) and density is measured according to ASTM D792.5. The ethylene interpolymer product of having a M/Mfrom about 2 to about 25.6. The ethylene interpolymer product of having a CDBIfrom about 10% to about 98%.7. The ethylene interpolymer product of ; wherein{'sup': '3', '(i) said first ethylene interpolymer has a melt index from about 0.001 to about 1000 dg/minute, a density from about 0. ...

Подробнее
Номер записи: 38
28-01-2021 дата публикации

Blow Molding Polymers with Improved Cycle Time, Processability, and Surface Quality

Номер: US20210024728A1
Автор: Chaffin Jay M., Cruz Carlos A., Hicks Jennifer L., Inn Yongwoo, Lumbley Justin, Rathman John R., Rutledge-Ryal Brandy
Принадлежит:

Ethylene-based polymers having a density of 0.952 to 0.965 g/cm, a high load melt index (HLMI) from 5 to 25 g/10 min, a weight-average molecular weight from 275,000 to 450,000 g/mol, a number-average molecular weight from 15,000 to 40,000 g/mol, a viscosity at HLMI from 1400 to 4000 Pa-sec, and a tangent delta at 0.1 secfrom 0.65 to 0.98 degrees. These polymers have the processability of chromium-based resins, but with improved stress crack resistance, and can be used in large-part blow molding applications. 1. An ethylene polymer having:{'sup': '3', 'a density in a range from about 0.952 to about 0.965 g/cm;'}a high load melt index (HLMI) in a range from about 5 to about 25 g/10 min;a weight-average molecular weight (Mw) in a range from about 275,000 to about 450,000 g/mol;a number-average molecular weight (Mn) in a range from about 15,000 to about 40,000 g/mol;a HLMI in a range from about 1400 to about 4000 Pa-sec; and{'sup': '−1', 'a tan δ at 0.1 secin a range from about 0.65 to about 0.98 degrees.'}2. The polymer of claim 1 , wherein the ethylene polymer has an environmental stress crack resistance (ESCR) of at least 500 hours.3. The polymer of claim 1 , wherein the ethylene polymer has a ratio of Mw/Mn in a range from about 8 to about 20.4. A blow molded article comprising the ethylene polymer of .5. The polymer of claim 1 , wherein the ethylene polymer has:a CY-a parameter in a range from about 0.18 to about 0.36; and{'sup': '−1', 'a viscosity at 100 secin a range from about 1600 to about 2800 Pa-sec.'}6. The polymer of claim 1 , wherein the ethylene polymer has:less than about 0.008 long chain branches per 1000 total carbon atoms; anda reverse comonomer distribution.7. The polymer of claim 1 , wherein the ethylene polymer contains claim 1 , independently claim 1 , less than 0.08 ppm by weight of chromium and titanium.8. The polymer of claim 1 , wherein:{'sup': '3', 'the density is in a range from about 0.952 to about 0.96 g/cm;'}the HLMI is in a range from ...

Подробнее
Номер записи: 39
24-04-2014 дата публикации

Polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom

Номер: US20140113090A1
Автор: Christina Serrat, Gregory Bunker, Jian Wang, Lawrence J. Effler, Jr., Mehmet Demirors, Nilesh R. Savargaonkar, Selim Bensason, Teresa P. Karjala
Принадлежит: Dow Global Technologies LLC

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm 3 , and a melt index (I 2 ) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (M w /M n ) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogenous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm 3 , and a melt index (I 2 ) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene blend-composition is formed into a film via blown film process, the output rate is improved at least 6 percent relative to a similar linear low density polyethylene.

Подробнее
Номер записи: 40
04-02-2016 дата публикации

Novel bimodal resins having good film processability

Номер: US20160032027A1
Автор: Guylaine St. Jean, J. Todd Lanier, QING Yang
Принадлежит: Chevron Phillips Chemical Co LP

A bimodal polyethylene copolymer comprising a lower molecular weight (LMW) component and a higher molecular weight (HMW) component, the copolymer having a z-average molecular weight (M Z ) of from about 1,000 kg/mol to about 2,500 kg/mol, a weight fraction of the LMW component (LMW fr.) of from about 0.60 to 0.85, a ratio of a weight average molecular weight (M W ) of the HMW component (HMW M W ) to a M W of the LMW component (LMW M W ) of from about 14 to about 25, a zero shear viscosity (η 0 ) of from about 5×10 5 Pa-s to about 1×10 7 Pa-s and a HMW M W of from about 800 kg/mol to about 1,500 kg/mol.

Подробнее
Номер записи: 41
04-02-2016 дата публикации

POLYETHYLENES HAVING FASTER CRYSTALLIZATION RATE AND IMPROVED ENVIRONMENTAL STRESS CRACKING RESISTANCE

Номер: US20160032088A1
Автор: Mehta Sameer D.
Принадлежит:

Disclosed is a polyethylene composition having faster crystallization rate and improved environmental stress cracking resistance. The polyethylene composition comprises a multimodal polyethylene and a nucleating agent. The multimodal polyethylene comprises from 25 to 50 wt % of a low molecular weight ethylene homopolymer component, from 25 to 50 wt % of a medium molecular weight ethylene copolymer component and from 25 to 50 wt % of a high molecular weight ethylene copolymer component. The polyethylene composition has an environmental stress cracking resistance (ASTM D1693, Condition B in 100% Igepal) greater than or equal to 40 days and a crystallization half time less than or equal to 70% of the crystallization half time of the multimodal polyethylene without nucleating agent. 2. The polyethylene composition of having a crystallization half time less than or equal to 60% of the crystallization half time of the multimodal polyethylene.3. The polyethylene composition of having a crystallization half time less than or equal to 50% of the crystallization half time of the multimodal polyethylene.4. The polyethylene composition of having a crystallization half time less than or equal to 12 minutes at 124° C.5. The polyethylene composition of having a crystallization half time less than or equal to 9 minutes at 124° C.6. The polyethylene composition of having a crystallization half time less than or equal to 6 minutes at 124° C.7. The polyethylene composition of claim 1 , wherein the nucleating agent is selected from the group consisting of zinc glycerolate claim 1 , calcium glycerolate claim 1 , calcium hexahydrophthalate claim 1 , zinc hexahydrophthalate claim 1 , and mixtures thereof.8. The polyethylene composition of claim 7 , comprising from 10 ppm to 10 claim 7 ,000 ppm of the nucleating agent.9. The polyethylene composition of claim 8 , comprising from 20 ppm to 5 claim 8 ,000 ppm of the nucleating agent.10. The polyethylene composition of claim 9 , comprising ...

Подробнее
Номер записи: 42
17-02-2022 дата публикации

RAISED TEMPERATURE RESISTANT PIPES COMPRISING AN ETHYLENE-BASED POLYMER

Номер: US20220049797A1
Автор: AL-SAIF Nasser Abdullah, Banat Yahya, MOKDAD Abdelhamid
Принадлежит:

The present invention relates to a pipe comprising an ethylene-based polymer, wherein the ethylene-based polymer: ⋅ comprises ≥0.10 mol % of units derived from 1-hexene, with regard to the total molar quantity of polymeric units of the ethylene-based polymer; ⋅ has an M/Mas determined in accordance with ASTM D6474 (2012) of ≥2.5 and ≤4.0, preferably of ≥2.5 and ≤3.4; ⋅ has a density as determined in accordance with ASTM D792 (2008) of ≥925 and ≤945 kg/m; and ⋅ in the molecular weight range of log(M) between 4.0 and 5.5, has a comonomer branch content of between 2 and 15 comonomer-derived branches per 1000 carbon atoms in the polymer, as determined via C NMR. Such pipe provides a desirably high long-term strength, as demonstrated by its high strain hardening modulus, as well as desirably high impact strength, as demonstrated by its high Charpy impact strength. Further, such pipe may be compliant with the PE-RT requirements of ISO 22391-1 (2009). For example, such pipe may be used for containing water at temperatures in the range of 40° C. to 80°. 1. Pipe comprising an ethylene-based polymer , wherein the ethylene-based polymer:comprises ≥0.10 mol %, of units derived from 1-hexene, with regard to the total molar quantity of polymeric units of the ethylene-based polymer;{'sub': ['w', 'N'], '#text': 'has a molecular weight distribution M/Mas determined in accordance with ASTM D6474 (2012) of ≥2.5 and ≤4.0;'}{'sup': '3', '#text': 'has a density as determined in accordance with ASTM D792 (2008) of ≥925 and ≤945 kg/m; and'}{'sub': 'w', 'sup': '13', '#text': 'in the molecular weight range of log(M) between 4.0 and 5.5 has a comonomer branch content of between 2 and 15 comonomer-derived branches per 1000 carbon atoms in the polymer, as determined via C NMR.'}2. Pipe according to claim 1 , wherein the ethylene-based polymer has a comonomer incorporation ratio of ≥1.50 claim 1 , wherein the comonomer incorporation ratio is defined as the ratio between the quantity of comonomer ...

Подробнее
Номер записи: 43
31-01-2019 дата публикации

POLYOLEFIN FILM WITH IMPROVED TOUGHNESS

Номер: US20190031841A1
Автор: Goode Mark G., Kopp Barbara J., Li Dongming, MURE Cliff R.
Принадлежит: UNIVATION TECHNOLOGIES, LLC

A film formed from a polyethylene copolymer using a reduced chromium oxide catalyst, ethylene monomers and a co-monomer selected from butene monomers or 1-hexene, where the polyethylene copolymer has a density in the range of from about 0.935 to about 0.950 g/cmand an I/Iin a range of about 18.0 to about 30.0. The film formed from the polyethylene copolymer has a dart drop impact (g/m) that significantly greater as compared to a film of the polyethylene copolymer formed using a silyl chromate catalyst in place of the reduced chromium oxide catalyst. A method of making such films is also provided. 1. A film comprising: a polyethylene copolymer formed using a reduced chromium oxide catalyst , ethylene monomers and a co-monomer selected from 1-butene or 1-hexene , the polyethylene copolymer formed with the co-monomer to ethylene monomer mole ratio in a range of about 0.012 to about 0.04 to form the polyethylene copolymer having a density in the range of from about 0.9350 to about 0.950 g/cmand an I/Iin a range of about 18.0 to about 30.0 , wherein the polyethylene copolymer formed using the reduced chromium oxide catalyst provides an improvement in a dart drop impact (g/μm) of the film of 17 percent to 56 percent as compared to a film of the polyethylene copolymer formed using a silyl chromate catalyst in place of the reduced chromium oxide catalyst.2. The film of claim 1 , where the reduced chromium oxide catalyst is reduced with diethylaluminum ethoxide (DEAlE).3. The film of claim 1 , wherein the polyethylene copolymer has a melt index (I) of about 0.4 to about 1.0 g/10 min.4. The film of claim 1 , wherein the polyethylene copolymer has a flow index (I) of about 5.0 to about 25.0 g/10 min.5. The film of claim 1 , wherein the polyethylene copolymer has an I/Iof about 18.0 to about 28.0.6. The film of claim 1 , wherein the film has a dart drop impact of about 10.0 to about 20.0 g/μm.7. The film of claim 1 , wherein the polyethylene copolymer has a Mw≥about 100 claim 1 ...

Подробнее
Номер записи: 44
09-02-2017 дата публикации

CAPS AND CLOSURES

Номер: US20170037228A1
Автор: Dobbin Christopher John Brooke, Khakdaman Hamidreza, Li Tieqi, Sibtain Fazle, Taylor Kenneth Edward, Wang XiaoChuan
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

This disclosure relates to caps and closures manufactured from an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 20 dg/minute, a density from about 0.948 to about 0.968 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 54% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 1108-. (canceled)109. A cap or a closure comprising at least one layer comprising an ethylene interpolymer product comprising:(I) a first ethylene interpolymer;(II) a second ethylene interpolymer, and;(III) optionally a third ethylene interpolymer; {'br': None, 'sup': 'A', 'sub': a', 'b', 'n, '(L)M(Pl)(Q)'}, 'wherein said first ethylene interpolymer is produced using a single site catalyst formulation comprising a component (i) defined by the formula'}{'sup': 'A', 'wherein Lis selected from the group consisting of unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl and substituted fluorenyl;'}M is a metal selected from the group consisting of titanium, hafnium and zirconium;Pl is a phosphinimine ligand;{'sub': 1-10', '1-10', '5-10', '1-18', '1-8', '6-10', '1-8', '1-8, 'Q is independently selected from the group consisting of a hydrogen atom, a halogen atom, a Chydrocarbyl radical, a Calkoxy radical and a Caryl oxide radical; wherein each of said hydrocarbyl, alkoxy, and aryl oxide radicals may be unsubstituted or further ...

Подробнее
Номер записи: 45
09-02-2017 дата публикации

RESIN COMPOSITION, TONER FOR ELECTROPHOTOGRAPHY, HOT MELT COMPOSITION AND ETHYLENE/A-OLEFIN COPOLYMER

Номер: US20170037229A1
Автор: KAIDA Yuichi, Kanaya Hirotaka, Kawabe Kuniaki, Taki Keiichi, Tanaka Masakazu
Принадлежит: Mitsui Chemicals, Inc.

Provided is a resin composition containing: (A) an ethylene/α-olefin copolymer containing 91.0-99.9 parts by mole of (a) an ethylene-derived unit and 0.1-9.0 parts by mole of (b) a C-Cα-olefin-derived unit (wherein (a)+(b) is 100 parts by mole), while satisfying the requirements (i)-(iv) and (B) a thermoplastic resin and/or a thermosetting resin, wherein the mass ratio (A)/(B) is 0.1/99.9 to 50/50. This resin composition is useful for providing a toner which can be fixed by a relatively-low-temperature heating body and has good offset resistance, and which is suppressed in increase of particle diameters even if the toner is stored for a long time. (i) The Mw is 400 to 1,500. (ii) The Mw/Mn is 1.2 to 2.5. (iii) The penetration measured at 25° C. is 13 dmm or less. (iv) The melting temperature is 50° C. to 110° C. 1. A resin composition comprising:{'sub': 3', '8, 'an ethylene-α-olefin copolymer (A) which contains 91.0 to 99.9 parts by mole of a constituent unit (a) derived from ethylene and 0.1 to 9.0 parts by mole of a constituent unit (b) derived from a C-α-olefin (wherein the total of (a) and (b) is 100 parts by mole), and which satisfies requirements (i) to (iv) below(i) a weight average molecular weight (Mw) of 400 to 1,500 as measured by GPC,(ii) a molecular weight distribution (Mw/Mn) of 1.2 to 2.5 as measured by GPC,(iii) a penetration index of 13 dmm or less as measured in accordance with JIS K 2207 at 25° C., and(iv) a melting point (Tm) of 50 to 110° C. as measured by differential scanning calorimetry (DSC); andat least one resin (B) selected from the group consisting of a thermoplastic resin and a thermosetting resin,wherein a mass ratio of (A) to (B) ((A)/(B)) is 0.1/99.9 to 50/50.2. The resin composition according to claim 1 , wherein the ethylene-α-olefin copolymer (A) further satisfies requirement (v) below:{'sub': '−40', '(v) a fraction of a heat of fusion (ΔH) derived from a peak at 40° C. or lower, relative to total heat of fusion (MU) derived from ...

Подробнее
Номер записи: 46
09-02-2017 дата публикации

DILUTION INDEX

Номер: US20170037230A1
Автор: Dobbin Christopher John Brooke, Khakdaman Hamidreza, Li Tieqi, Sibtain Fazle, Taylor Kenneth Edward, Wang XiaoChuan
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

This disclosure relates to ethylene interpolymer compositions. Specifically, ethylene interpolymer products having: a Dilution Index (Y) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.869 to about 0.975 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 20% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 1102-. (canceled)104. The ethylene interpolymer product of claim 103 , wherein said single site catalyst formulation further comprises: an alumoxane co-catalyst; a boron ionic activator claim 103 , and; optionally a hindered phenol.105. The ethylene interpolymer product of claim 104 , wherein said alumoxane co-catalyst is methylalumoxane (MAO) and said boron ionic activator is trityl tetrakis (pentafluoro-phenyl) borate.106. The ethylene interpolymer product of claim 103 , further characterized as having one or more of:a) ≧0.03 terminal vinyl unsaturations per 100 carbon atoms;b) ≧3 parts per million (ppm) of a total catalytic metal;c) a Dimensionless Modulus, Xd, greater than 0.107. The ethylene interpolymer product of having a melt index from about 0.3 to about 500 dg/minute; wherein melt index is measured according to ASTM D1238 (2.16 kg load and 190° C.)108. The ethylene interpolymer product of having a density from about 0.869 to about 0.975 g/cc; wherein density is measured according to ASTM D792.109. The ethylene interpolymer product of having a M/Mfrom about 2 to about 25.110. The ethylene interpolymer product of having a CDBIfrom about 20% to about 98%.111. ...

Подробнее
Номер записи: 47
09-02-2017 дата публикации

Golf ball resin composition and golf ball

Номер: US20170037231A1
Автор: Hiroshi TADAOKA, Kazuyoshi Shiga, Masanori Taguchi, Takahiro Shigemitsu
Принадлежит: Dunlop Sports Co Ltd

An object of the present invention is to provide a golf ball resin composition having high resilience and flexibility. The present invention provides a golf ball resin composition, comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer, (a-3) a ternary copolymer, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer, (B) a saturated fatty acid, (C) an unsaturated fatty acid, and (D) a carboxyl group modified diene polymer having at least two carboxyl groups and/or an anhydride of the carboxyl groups; and having a neutralization degree of more than 80 mole %, wherein a total amount of (B) the saturated fatty acid, (C) the unsaturated fatty acid and (D) the carboxyl group modified diene polymer ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.

Подробнее
Номер записи: 48
08-02-2018 дата публикации

PROCESS TO FORM ETHYLENE/ALPHA-OLEFIN INTERPOLYMERS

Номер: US20180037727A1
Автор: Hypolite Curvel, Jain Pradeep, Karjala Thomas W., Madenjian Edward O., Rubalcaba Jorge
Принадлежит:

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. 1. 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, andtransferring 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.”2. The process of claim 1 , wherein the stirred tank reactor is a continuous stirred tank reactor (CSTR).3. The process of claim 1 , wherein the polymerization of the first mixture is a solution polymerization.4. The process of claim 1 , wherein the polymerization of the second mixture is a solution polymerization.5. The process of claim 4 , wherein the ratio of “the solution viscosity of ...

Подробнее
Номер записи: 49
24-02-2022 дата публикации

CROSS-LINKED FOAMS MADE FROM INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS

Номер: US20220056252A1
Автор: Kummer Kyle G., Madenjian Lisa S., Munro Jeffrey C.
Принадлежит:

Foam compositions comprise at least an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymers of the present disclosure are multi-block copolymers comprising at least one soft block and at least one hard block. The foam compositions can further comprise a blowing agent and a cross-linking agent. Methods of making the foam compositions and foamed articles made from the foam compositions are also described. 1. A foam composition comprising at least one ethylene/α-olefin interpolymer comprising at least one soft segment and at least one hard segment , wherein the foam composition has a density of from 0.10 g/cc to 0.50 g/cc , wherein the ethylene/α-olefin interpolymer has a density of from 0.877 g/cc to 0.895 g/cc , wherein the at least one soft segment has a comonomer content of from 6 mol % to 15 mol % , and wherein the ethylene/α-olefin interpolymer:{'sub': w', 'n', 'm', 'm, 'claim-text': {'br': None, 'i': T', 'd', 'd, 'sub': 'm', 'sup': '2', '≥−2002.9+4538.5()−2422.2(); and/or'}, '(a) has a M/Mfrom about 1.7 to about 3.5, at least one melting point, T, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tand d correspond to the relationship{'sub': w', 'n, 'claim-text': [{'br': None, 'i': T>−', 'H', 'H, 'Δ0.1299(Δ)+62.81 for Δgreater than zero and up to 130 J/g,'}, {'br': None, 'i': T≥', 'H, 'Δ48° C. for Δgreater than 130 J/g,'}], '(b) has a M/Mfrom about 1.7 to about 3.5, and is characterized by a heat of fusion, ΔH in J/g, and a delta quantity, ΔT, in degrees Celsius defined as the temperature difference between the tallest DSC peak and the tallest CRYSTAF peak, wherein the numerical values of ΔT and ΔH have the following relationshipswherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C.; and/or {'br': None, 'i': Re', 'd, '>1481-1629(); and/or'}, '(c) is ...

Подробнее
Номер записи: 50
06-02-2020 дата публикации

METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION AND THERMOPLASTIC RESIN COMPOSITION

Номер: US20200040177A1
Автор: Iwanaga Kentaro, TAKAMORI Yoshihisa
Принадлежит: INOAC CORPORATION

It becomes possible to produce a thermoplastic resin composition having a sea-island structure by a kneading step of kneading a thermoplastic elastomer and/or rubber material having an alkoxysilyl group, in which the alkoxysilyl group is grafted to the thermoplastic elastomer and/or rubber material, and a thermoplastic resin in a melt state in a kneading machine and a dynamic crosslinking step of adding a water component into the kneading machine, forming a silanol group by a hydrolysis reaction of the alkoxysilyl group in the thermoplastic elastomer and/or rubber material having an alkoxysilyl group and the water component in the kneading machine, and subsequently forming a siloxane bond by a condensation reaction between the silanol groups. 1. A method for producing a thermoplastic resin composition , comprising:a kneading step of kneading a thermoplastic elastomer and/or rubber material having an alkoxysilyl group, in which the alkoxysilyl group is grafted to the thermoplastic elastomer and/or rubber material, and a thermoplastic resin in a melt state in a kneading machine; anda dynamic crosslinking step of adding a water component into the kneading machine, forming a silanol group by a hydrolysis reaction of the alkoxysilyl group in the thermoplastic elastomer and/or rubber material having an alkoxysilyl group and the water component in the kneading machine, and subsequently forming a siloxane bond by a condensation reaction between the silanol groups,wherein the thermoplastic resin composition obtained by the dynamic crosslinking step has a sea-island structure.2. The method for producing a thermoplastic resin composition according to claim 1 , wherein in the dynamically crosslinking step claim 1 ,when the alkoxysilyl group of the thermoplastic elastomer and/or rubber material having an alkoxysilyl group forms the siloxane bond passing through the silanol group,a viscosity of the thermoplastic elastomer and/or rubber material having an alkoxysilyl group becomes ...

Подробнее
Номер записи: 51
16-02-2017 дата публикации

ROTOMOLDED ARTICLES

Номер: US20170044357A1
Автор: Dobbin Christopher John Brooke, Khakdaman Hamidreza, Li Tieqi, Sibtain Fazle, Taylor Kenneth Edward, Wang XiaoChuan
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

This disclosure relates to rotomolded articles, having a wall structure, where the wall structure contains at least one layer containing an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Y) greater than 0; total catalytic metal ≧3.0 ppm; ≧0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (X) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 100 dg/minute, a density from about 0.950 to about 0.970 g/cm, a polydispersity (M/M) from about 2 to about 25 and a CDBIfrom about 55% to about 97%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation. 1105-. (canceled)106. A rotomolded article comprising a wall structure; (I) a first ethylene interpolymer;', '(II) a second ethylene interpolymer, and;', '(III) optionally a third ethylene interpolymer;, 'wherein said wall structure comprises at least one layer comprising an ethylene interpolymer product comprising [{'br': None, 'sup': 'A', 'sub': a', 'b', 'n, 'i': 'l', '(L)M(P)(Q)'}, {'sup': 'A', 'wherein Lis selected from the group consisting of unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl and substituted fluorenyl;'}, 'M is a metal selected from the group consisting of titanium, hafnium and zirconium;', 'Pl is a phosphinimine ligand;', {'sub': 1-10', '1-10', '5-10', '1-18', '1-8', '6-10', '1-8', '1-8, 'Q is independently selected from the group consisting of a hydrogen atom, a halogen atom, a Chydrocarbyl radical, a Calkoxy radical and a Caryl oxide radical; wherein each of said hydrocarbyl, alkoxy, and aryl oxide radicals may be ...

Подробнее
Номер записи: 52
03-03-2022 дата публикации

Catalyst for Olefin Polymerization and Polyolefin Prepared Using the Same

Номер: US20220064344A1
Автор: Ahreum Kim, Junho Seo, Munhee Lee, Yujeong Jeong
Принадлежит: Hanwha Solutions Corp

The present invention relates to a catalyst for olefin polymerization. Specifically, the present invention relates to a hybrid catalyst, which is capable of preparing a polyolefin, particularly a linear low-density polyethylene, which has excellent processability and is capable of providing a film having good mechanical and optical properties.

Подробнее
Номер записи: 53
03-03-2022 дата публикации

POLYOLEFIN COMPOSITION

Номер: US20220064420A1
Автор: Cavalieri Claudio, Ciarafoni Marco, Galvan Monica, Grazzi Michele
Принадлежит: BASELL POLIOLEFINE ITALIA S.R.L.

A polyolefin composition made from or containing: 1. A polyolefin composition comprising:{'sub': A', 'A, 'A) 5-35% by weight of a propylene ethylene copolymer containing from 0.5 wt % to 7.0 wt % of ethylene derived units and containing 15% by weight or less of a fraction soluble in xylene at 25° C. (XS), the amount of the ethylene units and the fraction XSbeing referred to the weight of (A);'}{'sub': B', 'B, 'B) 20-50% by weight of an ethylene homopolymer having containing 5% by weight or less of a fraction soluble in xylene at 25° C. (XS), the amount of the fraction XSbeing referred to the weight of (B); and'}{'sub': C', 'C, 'C) 30-60% by weight of a terpolymer of ethylene, propylene and 1-butene derived units containing from 45% to 65% by weight of ethylene units and from 15% to 38% by weight of 1-butene units; and containing from 30% to 85% by weight of a fraction soluble in xylene at 25° C. (XS), the amount of the ethylene units, the 1-butene units, and the fraction XSbeing referred to the weight of (C);'}the amounts of (A), (B) and (C) being referred to the total weight of (A)+(B)+(C), the sum of the amount of (A)+(B)+(C) being 100 wt %.2. The polyolefin composition according to claim 1 , wherein:Component (A) ranges from 10% by weight to 30% by weight;Component (B) ranges from 25% by weight to 45% by weight; andComponent (C) ranges from 35% by weight to 55% by weight.3. The polyolefin composition according to claim 1 , whereinComponent (A) ranges from 15% by weight to 23% by weight;Component (B) ranges from 30% by weight to 40% by weight; andComponent (C) ranges from 40% by weight to 50% by weight.4. The polyolefin composition according to claim 1 , wherein in component (A) claim 1 , the ethylene derived units ranges from 1.0 wt % to 6.0 wt %.5. The polyolefin composition according to claim 1 , wherein component (B) is an ethylene homopolymer having 4 wt % or less of a fraction soluble in xylene at 25° C. (XS).6. The polyolefin composition according to claim ...

Подробнее
Номер записи: 54
25-02-2021 дата публикации

PRODUCING POLYOLEFIN PRODUCTS

Номер: US20210054122A1
Автор: Boller Timothy M., Harlan C. Jeff, Hussein Fathi David, Lynn Timothy R.
Принадлежит: UNIVATION TECHNOLOGIES, LLC

A polymerization catalyst system, a method of using the polymerization catalyst system, and a polymer produced with the catalyst system. The polymerization catalyst system has a non-metallocene catalyst and a metallocene catalyst. The metallocene catalyst has the formula: 117.-. (canceled)19. The method of claim 18 , wherein the catalyst system comprises a common-supported catalyst system.20. The method of claim 18 , comprising adding the metallocene catalyst as a trim catalyst.21. The method of claim 18 , comprising impregnating the metallocene catalyst and non-metallocene catalyst on a single support.22. The method of claim 18 , wherein the catalyst system comprises an activator.23. The method of claim 18 , wherein the non-metallocene catalyst comprises a Group 15 metal-containing catalyst compound. Ethylene alpha-olefin (polyethylene) copolymers are typically produced in a low pressure reactor, utilizing, for example, solution, slurry, or gas phase polymerization processes. Polymerization takes place in the presence of catalyst systems such as those employing, for example, a Ziegler-Natta catalyst, a chromium based catalyst, a metallocene catalyst, or combinations thereof.A number of catalyst compositions containing single site, e.g., metallocene, catalysts have been used to prepare polyethylene copolymers, producing relatively homogeneous copolymers at good polymerization rates. In contrast to traditional Ziegler-Natta catalyst compositions, single site catalyst compositions, such as metallocene catalysts, are catalytic compounds in which each catalyst molecule contains one or only a few polymerization sites. Single site catalysts often produce polyethylene copolymers that have a narrow molecular weight distribution. Although there are single site catalysts that can produce broader molecular weight distributions, these catalysts often show a narrowing of the molecular weight distribution (MWD) as the reaction temperature is increased, for example, to increase ...

Подробнее
Номер записи: 55
13-02-2020 дата публикации

RESIN MEMBER AND SHEET USING SAME, METHOD FOR PRODUCING RESIN MEMBER, AND HEAT STORAGE MATERIAL AND HEAT CONTROL SHEET USING SAME

Номер: US20200048442A1
Автор: INADA Teiichi, Morimoto Tsuyoshi, Nagai Akira
Принадлежит:

In one aspect, the present invention is a resin member comprising a copolymer of ethylene and an olefin having 3 or more carbon atoms, a straight-chain saturated hydrocarbon compound, and a gelling agent. 1. A resin member comprising:a copolymer of ethylene and an olefin having 3 or more carbon atoms;a straight-chain saturated hydrocarbon compound; anda gelling agent.2. A resin member comprising:a copolymer of ethylene and an olefin having 3 or more carbon atoms;a straight-chain saturated hydrocarbon compound; andat least one selected from the group consisting of a carboxylic acid and a carboxylic acid metal salt.3. The resin member according to claim 1 , wherein a number of carbon atoms of the olefin is 3 to 8.4. The resin member according to claim 1 , wherein a melting point of the straight-chain saturated hydrocarbon compound is less than 50° C. claim 1 , and the number of carbon atoms of the olefin is 8.5. The resin member according to claim 1 , wherein a melting point of the straight-chain saturated hydrocarbon compound is 50° C. or more claim 1 , and the resin member further comprises at least one selected from the group consisting of a polyethylene and a polypropylene.6. A sheet comprising: a metal layer; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a resin layer formed on the metal layer and composed of the resin member according to .'}7. A heat storage material comprising:a copolymer of ethylene and an olefin having 3 or more carbon atoms;a straight-chain saturated hydrocarbon compound; anda gelling agent.8. A heat storage material comprising:a copolymer of ethylene and an olefin having 3 or more carbon atoms;a straight-chain saturated hydrocarbon compound; andat least one selected from the group consisting of a carboxylic acid and a carboxylic acid metal salt.9. The heat storage material according to claim 7 , wherein a number of carbon atoms of the olefin is 3 to 8.10. The heat storage material according to claim 7 , wherein a melting point of ...

Подробнее
Номер записи: 56
22-02-2018 дата публикации

FLAME-PROOFED POLYMER COMPOSITION

Номер: US20180051157A1
Автор: Mestan Gerhard
Принадлежит: BATEGU GUMMITECHNOLOGIE GMBH

A flame-proof vulcanised polymer composition includes as a polymer component a halogen-free olefinic M-group elastomer with a saturated main chain at an amount of greater than 50 Parts per Hundred Rubber (phr) with respect to polymer components, a halogen-free water-releasing flame retardant or a combination of different halogen-free water-releasing flame retardants at an amount of in total 30 to 130 phr and a mineral oil plasticiser having an amount of less than or equal to 50 phr. Further disclosed are a method for producing the flame retardant vulcanised polymer composition, a flame-retardant article and an elastic flame-proof composite element. 131.-. (canceled)32. A flame retardant , vulcanised polymer composition , comprising:a halogen-free olefinic M-group elastomer as a polymer component with a saturated main chain at an amount of greater than 50 Parts per Hundred Rubber (phr) with respect to polymer components;a halogen-free water-releasing flame retardant or a combination of different halogen-free water-releasing flame retardants at an amount of in total 30 to 130 phr; anda mineral oil plasticiser having an amount of less than or equal to 50 phr.33. The composition of claim 32 , wherein the mineral oil plasticiser is in a maximum amount of less than or equal to 20 phr claim 32 , preferably less than or equal to 10 phr claim 32 , and/or the composition is free of mineral oil plasticisers.34. The composition of claim 32 , wherein halogen-free olefinic elastomers are included at an amount greater than or equal to 70 phr or with an amount of 100 phr as the only polymer components.35. The composition of claim 32 , wherein an amount of the water-releasing flame retardants are in a range from 50 to 110 phr claim 32 , preferably from 60 to 100 phr.36. The composition of claim 32 , wherein the water-releasing flame retardant includes metal hydrates claim 32 , preferably magnesium hydroxide (MDH) claim 32 , aluminium hydroxide (ATH) and/or zinc borate claim 32 , ...

Подробнее
Номер записи: 57
22-02-2018 дата публикации

Polyethylene for injection molding and molded article using same

Номер: US20180051164A1
Автор: Kazuhiro Kobayashi, Kenji HADANO, Kouichi Ogawa
Принадлежит: Japan Polyethylene Corp

An object of the present invention is to provide a polyethylene for injection molding, which has an excellent balance between moldability and durability, and a molded article such as an injection-molded plastic fuel tank that has an excellent balance among injection moldability, durability, and impact resistance. The invention relates to a polyethylene for injection molding, the polyethylene comprising at least two types of specific polyethylenes, wherein the density, the high load melt flow rate, and the relationship between the weight ratio and the density of the polyethylene satisfy specific characteristics.

Подробнее
Номер записи: 58
22-02-2018 дата публикации

COMPOSITION FOR LOW TEMPERATURE USE CONTAINERS

Номер: US20180051165A1
Автор: Garcia-Meitin Eddy I., JR. Raymond L., Laakso, Li Pi Shan Colin
Принадлежит:

A modifier for forming sub-ambient temperature use containers includes (a) from 20 wt % to 40 wt % of a block composite, the block composite including (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene polymer, and (iii) a block copolymer, (b) from 40 wt % to 60 wt % of a polyolefin copolymer, the polyolefin copolymer being derived from ethylene and at least one of a Cto Calpha-olefin, having a melt index from 100 g/10 min to 1500 g/10 min, according to ASTM D1238 and at 190° C./2.16 kg, and having a density from 0.860 g/cmto 0.900 g/cm, and (c) optionally, from 0 wt % to 30 wt % of at least one of a first additional copolymer that has a refractive index from 1.490 to 1.510 and a second additional copolymer that is miscible with polypropylene. 1. A composition for forming a sub-ambient temperature use container , the composition comprising: (a) from 20 wt % to 40 wt % of a block composite, based on a total weight of the modifier, the block composite including (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene polymer, and (iii) a block copolymer including an ethylene-propylene soft block that has a same composition as the ethylene-propylene polymer and an isotactic polypropylene hard block that has a same composition as the isotactic polypropylene polymer, the soft block comprising from 50 wt % to 80 wt % of ethylene based on a total weight of the soft block, and the block copolymer including from 20 wt % to 50 wt % of the hard block, based on the total weight of the block copolymer,', {'sub': 3', '10, 'sup': 3', '3, '(b) from 40 wt % to 60 wt % of a polyolefin copolymer, based on a total weight of the modifier, the polyolefin copolymer being derived from ethylene and at least one of a Cto Calpha-olefin, and the polyolefin copolymer having a melt index from 100 g/10 min to 1500 g/10 min, according to ASTM D1238 and at 190° C./2.16 kg, and a density from 0.860 g/cmto 0.900 g/cm, and'}, '(c) optionally, from 0 wt % to 30 wt % of at ...

Подробнее
Номер записи: 59
23-02-2017 дата публикации

POLYETHYLENE COMPOSITIONS, PROCESS AND CLOSURES

Номер: US20170051138A1
Автор: Salomons Stephen, Wang XiaoChuan
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability and ESCR properties. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles or containers. 1. A closure , said closure comprising a bimodal polyethylene composition comprising:{'sub': 2', 'w', 'n, 'sup': '3', '(1) 10 to 70 wt % of a first ethylene copolymer having a melt index I, of less than 0.4 g/10 min; a molecular weight distribution M/M, of less than 2.7; and a density of from 0.920 to 0.955 g/cm; and'}{'sub': 2', 'w', 'n, '(2) 90 to 30 wt % of a second ethylene copolymer having a melt index I, of from 250 to 20,000 g/10 min; a molecular weight distribution M/M, of less than 2.7;'}{'sup': '3', 'claim-text': {'sup': '3', 'claim-text': {'sub': w', 'n', '2, 'sup': '3', 'wherein said bimodal polyethylene composition has a molecular weight distribution M/M, of from 5.0 to 13.0, a density of from 0.949 to 0.958 9/cm, a stress exponent of less than 1.53, a melt index (I) of from 0.3 to 3.0 g/10 min, and which satisfies the following: 400,000≦Mz≦500,000.'}, 'wherein the density of said second ethylene copolymer is less than 0.035 g/cmhigher than the density of said first ethylene copolymer; the ratio (SCB1/SCB2) of the number of short chain branches per thousand carbon atoms in said first ethylene copolymer (SCB1) to the number of short chain branches per thousand carbon atoms in said second ethylene copolymer (SCB2) is greater than 1.0; and'}, 'and a density higher than the density of said first ethylene copolymer, but less than 0.965 g/cm;'}2. The closure of wherein said bimodal polyethylene composition has an ESCR Condition B (10% IGEPAL) of at least 150 hrs.3. The closure of wherein said bimodal polyethylene composition has a molecular weight distribution claim 1 ...

Подробнее
Номер записи: 60
26-02-2015 дата публикации

ADDITIVE MASTERBATCH WITH A C3-C5 ALPHA-OLEFIN HOMO- OR COPOLYMER IN THE CARRIER

Номер: US20150057407A1
Автор: Dahlen Kristian, Fagrell Ola, Nylander Perry
Принадлежит: Borealis AG

The present invention relates to a polyethylene composition comprising: a) a polyethylene having cross-linkable silicon-containing groups (A); and b) a masterbatch comprising—one or more additives; and—a carrier comprising a C-Calpha-olefin homo or copolymer (B). The present invention further relates to a cross-linked polyethylene composition obtainable by treating the composition according to any one of the preceding claims under cross-linking conditions. The present invention also relates to the following uses: Use of a masterbatch comprising—an additive; and—a carrier comprising a C-Calpha-olefin homo- or copolymer (B) for adding an additive to a polyethylene with cross-linkable silicon-containing groups. Use of C-Calpha-olefin homo- or copolymer (B) as carrier for additive(s) to improve the performance of a silanol condensation catalyst when cross-linking a polyethylene composition further comprising a polyethylene with cross-linkable silicon-containing groups. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)16. The polyethylene composition according to claim 15 , wherein the polyethylene composition is obtainable by compounding the polyolefin with cross-linkable silicon-containing groups and the masterbatch.17. The polyethylene composition according to claim 15 , wherein the amount of component (B) is 20 to 98 wt. % based on the total amount of the masterbatch.18. The polyethylene composition according further comprising:a silanol condensation catalyst and/or a pigment.19. The polyethylene composition according to claim 18 , wherein the silanol condensation catalyst or the pigment is the additive in the masterbatch comprising a C3-C5 alpha-olefin homo- or copolymer (B).20. The polyethylene composition according to claim 18 , wherein the silanol condensation catalyst is a sulphonic acid.23. The polyethylene composition ...

Подробнее
Номер записи: 61
10-03-2022 дата публикации

PROCESS FOR PREPARATION OF POLYETHYLENE

Номер: US20220073714A1
Автор: DESHPANDE Sanjeev, GUZMAN-CARRAZCO Job Daniel, MATTHEIJ Victor, TAMMADONI Maryam
Принадлежит:

The invention relates to a process for the preparation of an ethylene-based polymer, the process comprising: a) suspension polymerizing ethylene and an optional comonomer to obtain a suspension () comprising the ethylene-based polymer and wax in a suspension medium comprising a diluent, b) separating the ethylene-based polymer () from the suspension () to obtain a liquid stream () comprising the diluent and the wax, c) feeding at least part of the liquid stream () to a forced circulation reboiler (Q) for separating the diluent and the wax to obtain an evaporated stream () comprising the diluent, wherein the evaporated stream () is recycled to step a). 1. A process for the preparation of an ethylene-based polymer , the process comprising:{'b': '11', '#text': 'a) suspension polymerizing ethylene and an optional comonomer to obtain a suspension () comprising the ethylene-based polymer and wax in a suspension medium comprising a diluent,'}{'b': ['13', '11', '12'], '#text': 'b) separating the ethylene-based polymer () from the suspension () to obtain a liquid stream () comprising the diluent and the wax,'}{'b': ['25', '27', '27'], '#text': 'c) feeding at least part of the liquid stream () to a forced circulation reboiler (Q) for separating the diluent and the wax to obtain an evaporated stream () comprising the diluent, wherein the evaporated stream () is recycled to step a).'}2. The process according to claim 1 , wherein the ethylene-based polymer is selected from an ethylene homopolymer and an ethylene copolymer of ethylene and C3-C12 α-olefin.3. The process according to claim 1 , wherein the polymerization in step a) is carried out at pressures of 0.1 to 20 MPa and temperatures of 40° C. to 130° C.4. The process according to claim 1 , wherein step a) is performed in in a series of polymerization reactors comprising at least a first polymerization reactor (A) and a second polymerization reactor (H) claim 1 , wherein the suspension subjected to step b) is obtained in ...

Подробнее
Номер записи: 62
10-03-2022 дата публикации

CURABLE COMPOSITIONS COMPRISING UNSATURATED POLYOLEFINS

Номер: US20220073715A1
Автор: Habersberger Brian M., LiPiShan Colin, Munro Jeffrey C., Sun Lixin, Yang Hong, Yu Haiyang
Принадлежит:

Disclosed relates to unsaturated polyolefins and processes for preparing the same. Disclosed further relates to curable formulations comprising the unsaturated polyolefins that show improved crosslinking. 1. A curable composition for an encapsulant film , the curable composition comprising (A) a polyolefin component comprising an unsaturated polyolefin of the formula ALand (B) a curing component comprising a cross-linking agent , a coagent , and a silane coupling agent , wherein:{'sup': '1', '#text': 'Lis a polyolefin;'}{'sup': ['1', '1', '1', '1', '1', '1', '1', '1', '1'], 'sub': ['2', '2', '2', '2'], '#text': 'Ais selected from the group consisting of a vinyl group, a vinylidene group of the formula CH═C(Y)—, a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylidene group of the formula CH═C(Y)—, a mixture of a vinylidene group of the formula CH═C(Y)— and a vinylene group of the formula YCH═CH—, and a mixture of a vinyl group, a vinylidene group of the formula CH═C(Y)—, and a vinylene group of the formula YCH═CH—; and'}{'sup': '1', 'sub': ['1', '30'], '#text': 'Yat each occurrence independently is a Cto Chydrocarbyl group.'}2. A curable composition for an encapsulant film , the curable composition comprising (A) a polyolefin component comprising a telechelic polyolefin of the formula ALLAand (B) a curing component comprising a cross-linking agent , a coagent , and a silane coupling agent , wherein:{'sup': '1', '#text': 'Lis a polyolefin;'}{'sup': ['1', '1', '1', '1', '1', '1', '1', '1', '1'], 'sub': ['2', '2', '2', '2'], '#text': 'Ais selected from the group consisting of a vinyl group, a vinylidene group of the formula CH═C(Y)—, a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylene group of the formula YCH═CH—, a mixture of a vinyl group and a vinylidene group of the formula CH═C(Y)—, a mixture of a vinylidene group of the formula CH═C(Y ...

Подробнее
Номер записи: 63
03-03-2016 дата публикации

CARBON FIBER-FILLED THERMOPLASTIC OLEFINIC COMPOUNDS AND RELATED AUTOMOTIVE COMPONENTS

Номер: US20160060440A1
Автор: Prieto Alberto
Принадлежит: Equistar Chemicals, LP

The present disclosure provides a thermoplastic olefinic composition made from or containing: (A) a first polymer composition made from or containing a homopolymer polypropylene; (B) a second polymer composition made from or containing a polypropylene polymer grafted with an unsaturated monomer; (C) a third polymer composition made from or containing a first elastomeric ethylene copolymer; and (D) a carbon fiber composition made from or containing a carbon fiber coupled with a sizing composition. Optionally, the thermoplastic olefinic composition may be further made from or contain (a) a fourth polymer composition made from or containing a heterophasic polypropylene copolymer, (b) a fifth polymer composition made from or containing a second elastomeric ethylene composition, (c) an inorganic filler composition, (d) an additives composition, or (e) any combination of these components. The thermoplastic olefinic composition is suitable for use as a metal-replacement component, including automotive components. 1. A thermoplastic olefinic composition comprising:(A) a first polymer composition comprising: a homopolymer polypropylene;(B) a second polymer composition comprising: a polypropylene polymer grafted with an unsaturated monomer;(C) a third polymer composition comprising: a first elastomeric ethylene copolymer; and(D) a carbon fiber composition comprising: a carbon fiber coupled with a sizing composition.2. The thermoplastic olefinic composition of claim 1 , wherein the homopolymer polypropylene has a melt flow rate at 230 degrees Celsius claim 1 , 2.16 kg (ASTM D1238) in the range of about 1000 grams per 10 minutes to about 3000 grams per 10 minutes.3. The thermoplastic olefinic composition of claim 1 , wherein the first elastomeric ethylene copolymer comprises:(A) ethylene-derived units and{'sub': 3', '10, '(B) alpha-olefin comonomer units derived from at least one comonomer selected from the group consisting of Cto Calpha-olefins.'}4. The thermoplastic olefinic ...

Подробнее
Номер записи: 64
20-02-2020 дата публикации

Polyethylene Films

Номер: US20200056004A1
Автор: QIN Wei, Shen Zhi-Yi, Zhu Zhen-Yu
Принадлежит:

Films made from at least two polyethylene polymers differentiated in density, melt index, melt index ratio, or branching index and optionally, with other polymers, are disclosed. 1. A film comprising a polymer composition comprising from 5 wt % to 95 wt % of a first polyethylene polymer and from 95 wt % to 5 wt % of a second polyethylene polymer , wherein{'sup': 3', '3, 'sub': vis', '21.6', '2.16, '(1) the first polyethylene polymer comprises from 70 wt % to 100 wt % ethylene derived units and having a density of from 0.910 g/cmto 0.940 g/cmand a branching index g′of 0.98 or more, a melt index ratio (I/I) of from 25 to 32, and'}{'sup': 3', '3, 'sub': vis', '21.6', '2.16, '(2) the second polyethylene polymer comprises from 80 wt % to 99 wt % of ethylene derived units and having a density of from 0.905 g/cmto 0.945 g/cm, a branching index g′of less than 0.98, and a melt index ratio (I/I) of from 25 to 80.'}2. The film of claim 1 , wherein the polymer composition comprises from 25 wt % to 95 wt % of the first polyethylene polymer and from 75 wt % to 5 wt % of the second polyethylene polymer.3. The film of claim 1 , wherein the polymer composition comprises from 45 wt % to 95 wt % of the first polyethylene polymer and from 55 wt % to 5 wt % of the second polyethylene polymer claim 1 ,4. The film of claim 1 , wherein the first polyethylene polymer has a density of from 0.912 g/cmto 0.925 g/cm.5. The film of claim 1 , wherein the first polyethylene polymer has a melt index ratio (I/I) of from 25 to 32.6. The film of claim 1 , wherein the first polyethylene polymer has a branching index of greater than 0.99.7. The film of claim 1 , wherein the first polyethylene polymer has at least one of the following properties:{'sub': '2.16', 'a melt index (I) of from 0.1 g/10 min to 5.0 g/10 min;'}a molecular weight of from 15,000 to 400,000 g/mol;a molecular weight distribution (Mw/Mn) of from 1.5 to 5.0;a CDBI of less than 50%;a hafnium concentration of greater than 5 ppm by weight; ...

Подробнее
Номер записи: 65
20-02-2020 дата публикации

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Mixed Homogeneous Catalyst Formulations

Номер: US20200056024A1
Автор: Carter Charles, Dobbin Christopher, Kazemi Niousha, Keshtkar Mehdi, Khakdaman Hamidreza, Kleczek Monika, Molloy Brian, Salomons Stephen, Sibtain Fazle, Taylor Kenneth, VanAsseldonk Lawrence, Wang Qinyan, Wang XiaoChuan, Zhang Zengrong, Zoricak Peter
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

A continuous solution polymerization process is disclosed wherein at least two homogeneous catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a second homogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to the third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to the third homogeneous catalyst formulation. 135-. (canceled)37. The process according to further comprising:a) adding a catalyst deactivator A to the second exit stream, downstream of the second reactor, forming a deactivated solution A; or adding a catalyst deactivator B to the third exit stream, downstream of the third reactor, forming a deactivated solution B;b) phase separating deactivated solution A or deactivated solution B to recover the ethylene interpolymer product.38. The process according to claim 37 , further comprising:c) adding a passivator to deactivated solution A or deactivated solution B forming a passivated solution, with the proviso that step c) omitted if the heterogeneous catalyst formulation is not added to the third reactor, andd) phase separating said-deactivated solution A or deactivated solution B, or the passivated solution, to recover the ethylene interpolymer product.40. The process according to claim 39 , having the following molar ratios in the first reactor:{'sup': 'A', 'component Bto ...

Подробнее
Номер записи: 66
20-02-2020 дата публикации

Means For Increasing the Molecular Weight and Decreasing the Density of Ethylene Interpolymers Employing Homogeneous and Heterogeneous Catalyst Formulations

Номер: US20200056025A1
Автор: Carter Charles, Dobbin Christopher, Kazemi Niousha, Keshtkar Mehdi, Khakdaman Hamidreza, Kleczek Monika, Molloy Brian, Salomons Stephen, Sibtain Fazle, Taylor Kenneth, VanAsseldonk Lawrence, Wang Qinyan, Wang XiaoChuan, Zhang Zengrong, Zoricak Peter
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

A continuous solution polymerization process is disclosed wherein at least two catalyst formulations are employed. A first homogeneous catalyst formulation is employed in a first reactor to produce a first ethylene interpolymer and a first heterogeneous catalyst formulation is employed in a second reactor to produce a second ethylene interpolymer. Optionally a third ethylene interpolymer is formed in a third reactor. The resulting ethylene interpolymer products possess desirable properties in a variety of end use applications, for example in film applications. A means for increasing the molecular weight of the first ethylene interpolymer is disclosed and/or a means for increasing the temperature of the first reactor, relative to a third homogeneous catalyst formulation. A means for reducing the (α-olefin/ethylene) weight ratio in the first reactor is disclosed and/or reducing the density of the first ethylene interpolymer, relative to a third homogeneous catalyst formulation. 1139-. (canceled)141. The process according to further comprising:a) optionally adding a catalyst deactivator A to the third exit stream, downstream of the first and the second reactor, forming a deactivated solution A;b) adding a catalyst deactivator B to the fourth exit stream, downstream of the third reactor, forming a deactivated solution B; with the proviso that step b) is skipped if the catalyst deactivator A is added in step a); andc) phase separating the deactivated solution A or B to recover the ethylene interpolymer product.142. The process according to claim 141 , further comprising:d) adding a passivator to the deactivated solution A or B forming a passivated solution; ande) phase separating the passivated solution to recover the ethylene interpolymer product.144. The process according to comprising the following molar ratios in the first reactor:a molar ratio of component B to component A from about 0.3:1 to about 10:1;a molar ratio of component M to component A from about 1:1 to ...

Подробнее
Номер записи: 67
20-02-2020 дата публикации

Methods for Making Polyolefin Polymer Compositions

Номер: US20200056026A1
Автор: Cao Pbuong A., Davis Mark K., Lue Ching-Tai, Mariott Wesley R., Ziiker Daniel P
Принадлежит:

A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition. 1. A method for increasing the melt strength of a polyolefin polymer composition , the method comprising:mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b), andobtaining the polyolefin polymer composition.2. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength 10% or greater than the melt strength of the first polyolefin composition or the second polyolefin composition.3. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength 20% or greater than the melt strength of the first polyolefin composition or the second polyolefin composition.4. (canceled)5. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength of 10 cN or greater.6. The method of claim 1 , wherein the polyolefin polymer composition has a melt strength of 11 cN or greater.7. (canceled)8. The method of claim 1 , wherein the at least one olefin polymerization catalyst (a) comprises a metallocene catalyst.10. The method of claim 8 , wherein the metallocene catalyst comprises bis(cyclopentadienyl)zirconium dichloride claim 8 , bis(n-butylcyclopentadienyl)zirconium dichloride claim 8 , bis(n-butylcyclopentadienyl)zirconium dimethyl claim 8 , bis(pentamethylcyclopentadienyl)zirconium dichloride claim 8 , bis(pentamethylcyclopentadienyl)zirconium dimethyl ...

Подробнее
Номер записи: 68
05-03-2015 дата публикации

Ethylene-Based Polymers and Articles Made Therefrom

Номер: US20150065656A1
Автор: Best Steven A., Cheng Jianya, McCune Mallarie D.
Принадлежит:

Polymer compositions that include an ethylene-based polymer and a broad molecular weight distribution propylene-based polymer having a melt strength of 20.0 cN to 200.0 cN; and optionally, a propylene-based elastomer are described. The invention also includes articles, such as films, produced from such compositions and methods of making such compositions and methods of improving melt strength. 1. A polymer composition comprising:(a) an ethylene-based polymer;(b) a propylene-based polymer having a MWD greater than 5.0 and a melt strength of 20.0 cN to 200.0 cN, particularly about 50 cN to 200 cN; and(c) optionally, a propylene-based elastomer comprising at least about 60.0 wt. % propylene-derived units and about 5.0 to about 25.0 wt. % ethylene-derived units, based on total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80.0 J/g.2. The composition of claim 1 , wherein the ethylene-based polymer has a density of 0.910 to 0.960 g/cm.3. The composition of claim 1 , wherein the ethylene-based polymer has a CDBI of at least 70.4. The composition of claim 1 , wherein the ethylene-based polymer has 0.05 to 1.0 long-chain branches per 1000 carbon atoms.5. The composition of claim 1 , wherein the ethylene-based polymer comprises about 80.0 to 99.0 wt. % of polymer units derived from ethylene and about 1.0 to about 20.0 wt. % of polymer units derived from one or more Cto Cα-olefin comonomers; the ethylene-based polymer having a complex modulus claim 1 , G* claim 1 , <2.50×10Pa.6. The composition of claim 1 , wherein the ethylene-based polymer of has a complex modulus claim 1 , G* claim 1 , <5.00×10Pa.7. The composition of claim 1 , wherein the ethylene-based polymer has a complex modulus claim 1 , G* claim 1 , <2.50×10Pa.8. The composition of claim 1 , wherein the ethylene-based polymer comprises about 80.0 to 99.0 wt. % of polymer units derived from ethylene and about 1.0 to about 20.0 wt. % of polymer ...

Подробнее
Номер записи: 69
05-03-2015 дата публикации

Rotomolding resin

Номер: US20150065657A1
Автор: Celine Bellehumeur, Mark Hoidas, Yves Lacombe
Принадлежит: Nova Chemicals International SA

Resins suitable for rotomolded articles comprise a bimodal polyethylene copolymer comprising from 0.1 to 5 weight % of one or more C 6-8 alpha olefins and the balance ethylene, comprising from 20 to 50 weight % of a higher molecular weight polymer component having an Mw greater than 120,000 and correspondingly from 80 to 50 weight % of a lower molecular weight polymer component having an Mw less than 100,000 having a density greater than 0.942 g/cc [but less than 0.965 g/cc] and a bent strip ESCR as determined by ASTM D 1693 in 100% Igepal® CO-630 (ethoxylated nonylphenols) for conditions A and B of greater than 1000 hours. The resulting articles have a very good balance of properties and significant ESCR.

Подробнее
Номер записи: 70
28-02-2019 дата публикации

POLYETHYLENE COMPOSITION, METHOD OF MAKING THE SAME, AND FILMS MADE THEREFROM

Номер: US20190062540A1
Автор: Den Doelder Cornelis F.J., Gemoets Frederick, Nieto Jesus
Принадлежит: Dow Global Technologies LLC

The present disclosure provides linear low density polyethylene compositions, films and method of making the same. The linear low density polyethylene compositions, according to the present disclosure, exhibit each of the following properties: (1) a CEF fraction from 70 to 90 C of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I2, measured according to ASTM D 1238 (2.16 kg @190 C), in the range of from 0.8 to 1.2 g/10 minutes; and (3) a melt flow ratio, I10/I2, in the range of from 7.0 to 8.0. 1. A linear low density polyethylene composition which exhibits each of the following properties:(1) a CEF fraction from 70 to 90° C. of equal to or greater than 80% of the total CEF fractions;{'sub': '1', '(2) a melt index, I, measured according to ASTM D 1238 (2.16 kg @190° C.), in the range of from 0.8 to 1.5 g/10 minutes; and'}{'sub': 10', '2, '(3) a melt flow ratio, I/I, in the range of from 7.0 to 8.0.'}2. The linear low density polyethylene composition according to claim 1 , further exhibiting a density (measured according to ASTM D792) from 0.914 to 0.920 g/cm.3. The linear low density polyethylene composition according to claim 1 , wherein the polyethylene comprises units derived from ethylene and units derived from one or more comonomers selected from the group consisting of butene claim 1 , hexene claim 1 , and octene.4. The linear low density polyethylene composition according to claim 1 , any one of the preceding claims claim 1 , wherein the polyethylene comprises units derived from ethylene and units derived from hexene.5. The linear low density polyethylene composition according to claim 1 , any one of the preceding claims claim 1 , wherein the polyethylene is produced in a single loop solution polymerization reactor.6. The linear low density polyethylene composition according to claim 1 , any one of the preceding claims claim 1 , wherein a film layer having a thickness of 50 microns produced from a blend of 85 wt % of the linear low ...

Подробнее
Номер записи: 71
10-03-2016 дата публикации

An ethylene/alpha-olefin interpolymer composition

Номер: US20160068667A1
Автор: Douglas S. Ginger, Julie W. Mckenna, Mehmet Demirors, Teresa P. Karjala
Принадлежит: Dow Global Technologies LLC

The instant invention provides an ethylene/alpha-olefin interpolymer composition suitable for blown film applications, and blown films made therefrom. The ethylene/alpha-olefin interpolymer composition suitable for blown film applications according to the present invention comprises greater than 80 percent by weight of units derived from ethylene and 20 percent or less by weight of units derived from one or more alpha olefin co-monomers, wherein said ethylene/alpha-olefin interpolymer has a density in the range of from 0.910 to 0.918 g/cm 3 , a melt index I 2 in the range of from 0.5 to 1.1 g/10 minutes, a melt flow ratio I 10 /I 2 in the range of from 8 to 10, a melt strength in the range of from 3 to 6 cN, a highest temperature fraction in the range of from 11 to 14 percent determined by CEF, a highest peak temperature fraction by CEF in range of from 96 to 100° C., and a lowest temperature fraction from CEF in the range of from 2 to 5 percent, and a DSC heat curve having three melting peaks with a highest temperature melting peak in the range of from 120 to 124° C., a crystallinity in the range of from 40 to 50 percent.

Подробнее
Номер записи: 72
08-03-2018 дата публикации

FLOODING COMPOUNDS FOR TELECOMMUNICATION CABLES

Номер: US20180066129A1
Автор: Bailey Brad C., Esseghir Mohamed, Jin Yi, Yalvac Selim, ZHANG Yichi
Принадлежит: Dow Global Technologies LLC

Flooding compounds for telecommunications cables. Such flooding compounds contain a polymeric filler and a branched olefinic fluid. The branched olefinic fluid has an average of at least 1.5 methine carbons per oligomer molecule and at least 40 methine carbons per one thousand total carbons. Additionally, the average number of carbons per molecule in the branched olefinic fluid is from 25 to 200. 1. A flooding compound for a telecommunications cable , said flooding compound comprising:(a) a polymeric filler; and (i) an average of at least 1.5 methine carbons per oligomer molecule, and', '(ii) at least 40 methine carbons per one thousand total carbons,, '(b) a branched olefinic fluid havingwherein the average number of carbons per molecule in said branched olefinic fluid is from 25 to 200.2. The flooding compound of claim 1 , wherein said flooding compound has an apparent viscosity in the range of from 20 to 400 centipoise at 150° C. claim 1 , as determined according to ASTM D3236 claim 1 , wherein said flooding compound has a drop point of at least 65° C. claim 1 , as determined according to ASTM D127.3. The flooding compound of claim 1 , wherein said branched olefinic fluid is ethylene-based or ethylene- and propylene-based.4. The flooding compound of claim 1 , wherein said branched olefinic fluid is selected from the group consisting of a hyperbranched olefinic fluid prepared from ethylene as the only starting monomer claim 1 , a branched olefinic fluid prepared from ethylene and propylene as the only starting monomers claim 1 , a branched olefinic fluid prepared from ethylene and 1-octene as the only starting monomers claim 1 , and combinations of two or more thereof.5. The flooding compound of claim 1 , wherein said polymeric filler comprises a polyolefin elastomer.6. The flooding compound of claim 5 , wherein said polyolefin elastomer has a crystallinity in the range of 10 to 50 weight percent claim 5 , wherein said polyolefin elastomer has a dynamic viscosity ...

Подробнее
Номер записи: 73
08-03-2018 дата публикации

Lightweight Carpet Products and Method of Manufacture Thereof

Номер: US20180066167A1
Автор: Salsman Robert Keith
Принадлежит:

A lightweight carpet product includes a greige carpet having a primary backing and tufted fibers, a secondary backing including a nonwoven textile of synthetic fibers, and a thermoplastic adhesive composition adhered to the greige carpet and the secondary backing. The thermoplastic adhesive composition includes a modified polyethylene terephthalate (PET) having a crystallinity less than unmodified PET and a melting point from about 90° C. to about 150° C., and a particulate filler. Methods of manufacture include using a thermoplastic adhesive composition to adhere a greige carpet to a secondary backing to form a lightweight carpet product. 1. A carpet product comprising:a greige carpet which comprises a primary backing and tufted fibers;a secondary backing which comprises a nonwoven textile of synthetic fibers; and 'a modified polyethylene terephthalate (PET) having a crystallinity less than unmodified PET and a melting point from about 90° C. to about 150° C.; and', 'a thermoplastic hot melt adhesive composition adhered to the greige carpet and the secondary backing, the thermoplastic adhesive composition having a viscosity from 5,000 centipoise at 325° F. to 10,000 centipoise at 325° F. and comprisesa particulate filler in the amount from 37 to 41 percent by weight of the thermoplastic hot melt adhesive composition,wherein the carpet product has a basis weight of less than 60 ounces per square yard.2. (canceled)3. The carpet product of claim 1 , wherein the carpet product has a basis weight from about 50 ounces per square yard to about 60 ounces per square yard.4. (canceled)5. The carpet product of claim 1 , wherein the thermoplastic adhesive composition has a viscosity from about 6 claim 1 ,000 centipoise at 325° F. to about 8 claim 1 ,500 centipoise at 325° F.6. The carpet product of claim 1 , wherein the modified PET has a melting point from about 100° C. to about 115° C.7. The carpet product of claim 1 , wherein the particulate filler is present in an amount ...

Подробнее
Номер записи: 74
11-03-2021 дата публикации

Process for Producing Polymer Compositions Having Multimodal Molecular Weight Distribution

Номер: US20210070968A1
Автор: Dongming Li
Принадлежит: ExxonMobil Chemical Patents Inc

A process is described for producing a multimodal polymer composition comprising a high molecular weight polymer (1) and a low molecular weight polymer (2), wherein the weight ratio of polymer (1) to polymer (2) is at a first value, x. The process comprises compounding in a first compounding stage a mixture of polymer (1) and polymer (2), wherein the weight ratio of polymer (1) to polymer (2) in the mixture is at a second value, y, such that y>x to form a first blend. Polymer (2) is then added to the first blend and the mixture of polymer (2) and the first blend is compounded in a second compounding stage to produce a second blend.

Подробнее
Номер записи: 75
11-03-2021 дата публикации

Polyethylene composition for pipe applications with improved sagging properties

Номер: US20210070969A1
Автор: Antti Tynys, Jarmo Harjuntausta, Mohana Murali ADHYATMABHATTAR
Принадлежит: Borealis AG

The present invention relates to a polyethylene composition comprising, a base resin (A) comprising a copolymer of ethylene and at least one comonomer selected from alpha-olefins having from three to twelve carbon atoms, wherein the ethylene copolymer comprises a low molecular weight component (A-1) and a high molecular weight component (A-2) with the low molecular weight component (A-1) having a lower weight average molecular weight than the high molecular weight component (A-2), (B) carbon black in an amount of 1.0 to 10 wt % based on the total amount of the polyethylene composition, and (C) optional further additives other than carbon black.

Подробнее
Номер записи: 76
11-03-2021 дата публикации

POLYOLEFIN COMPOSITION FOR CABLE INSULATION

Номер: US20210074447A1
Автор: BAUDIER VINCENT, Biondini Gisella, Cavalieri Claudio, Flenniken Cindy, Galvan Monica, Lee Chun D.
Принадлежит: BASELL POLIOLEFINE ITALIA S.R.L.

A cable article made from or containing a polyolefin composition made from or containing 1. A cable article comprising:a polyolefin composition comprisingfrom 20.0 wt % to 80.0 wt % of component T1) being an interpolymer of ethylene and less than 7 wt %, of a polymerizable comonomer selected from the group consisting of unsaturated esters and hydrolyzable silane monomers;from 0.5 wt % to 5.0 wt % of a peroxide; and [{'sub': A', 'A', 'A, 'A) 5-35% by weight of a propylene homopolymer containing 5% by weight or less of a fraction soluble in xylene at 25° C. (XS), or a propylene ethylene copolymer containing 90% by weight or more of propylene units; containing 10% by weight or less of a fraction soluble in xylene at 25° C. (XS), both the amount of propylene units and of the fraction XSbeing referred to the weight of A);'}, {'sub': 3', '8', 'B', 'B, 'B) 20-50% by weight; of a copolymer of ethylene and a C-Calpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units and containing 25% by weight or less; of a fraction soluble in xylene at 25° C. (XS), both the amount of alpha-olefin units and of the fraction XSbeing referred to the weight of (B); and'}, {'sub': C', 'C, 'C) 30-60% by weight of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units and containing from 40% to 95% by weight of a fraction soluble in xylene at 25° C. (XS), both the amount of ethylene units and of the fraction XSbeing referred to the weight of (C);'}], 'from 20.0 wt % to 80.0 wt % of component T2) comprising'}the amounts of (A), (B) and (C) being referred to the total weight of (A)+(B)+(C), the sum of the amount of (A)+(B)+(C) being 100,wherein the cable article is selected from the group consisting of cable insulation and cable jacketing.2. The cable article according to claim 1 , wherein in component T2:Component A ranges from 10% by weight to 30% by weight;Component B ranges from 25% by weight to 45% by weight; andComponent C ranges from 35% ...

Подробнее
Номер записи: 77
05-03-2020 дата публикации

Bimodal polyethylene

Номер: US20200071509A1
Автор: Ayush A. Bafna, Cliff R. Mure, John F. Szul, Nitin Borse, Roger L. Kuhlman, Swapnil CHANDAK, Timothy R. Lynn, Yi Zhang
Принадлежит: Univation Technologies Llc

Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt flow ratio of the bimodal polyethylene.

Подробнее
Номер записи: 78
05-03-2020 дата публикации

Multiphase Conductive Polymer Composite Compositions

Номер: US20200071510A1
Автор: Brigandi Paul J., Cogen Jeffrey M., Reffner John
Принадлежит:

A composition comprises a ternary-phase polymer composite including components (A) ethylene/unsaturated ester copolymers having γ of from <5 to >1 mN/m; at least two additional polymers selected from the group consisting of: (B)non-polar polymers having γ of from >0 to <1 mN/m selected from the group consisting of polyethylene homopolymers, silane-functionalized polyethylene homopolymers, ethylene/alpha-olefin copolymers, and silane-functionalized ethylene/alpha-olefin copolymers, (C) ethylene/unsaturated ester copolymers having a γof >5 mN/m, and (D) EPDM copolymers; and conductive filler dispersed in only one of (A) and the at least two additional polymers, wherein (i) one of the at least two additional polymers is selected from (B) and the other is selected from (C) or (D), or (ii) one of the at least two additional polymers is selected from (C) and the other is selected from (B) or (D). 1. A composition comprising: [{'sup': 'P', '(A) at least one copolymer of ethylene with an unsaturated ester having a polar component of the surface tension (γ) of from less than or equal to 5 milliNewtons per meter (mN/m) to greater than or equal to 1 mN/m;'}, 'at least two additional polymers selected from the group consisting of:', {'sup': 'P', '(B) at least one non-polar polymer having a polar component of the surface tension (γ) of from greater than or equal to 0 mN/m to less than 1 mN/m and selected from the group consisting of polyethylene homopolymers, silane-functionalized polyethylene homopolymers, ethylene/alpha-olefin copolymers, and silane-functionalized ethylene/alpha-olefin copolymers;'}, {'sup': 'P', '(C) at least one copolymer of ethylene with an unsaturated ester having a polar component of the surface tension (γ) of greater than 5 mN/m; and'}, '(D) at least one ethylene propylene diene monomer copolymer; and', 'a conductive filler dispersed in only one of Component (A) and the at least two additional polymers,', 'wherein (i) a first of the at least two ...

Подробнее
Номер записи: 79
05-06-2014 дата публикации

HDPE Modified Polyethylene Blown Film Compositions Having Excellent Bubble Stability

Номер: US20140155553A1
Автор: Jianya Cheng, Pradeep P. Shirodkar, Rahul R. KULKARNI
Принадлежит: ExxonMobil Chemical Patents Inc

The present invention relates to polyethylene compositions comprising one or more ethylene polymers and one or more HDPE modifiers, in particular, this invention further relates to polyethylene blends comprising one or more ethylene polymers and one or more HDPE modifiers, wherein the modifier has: 1) a density of greater than 0.94 g/cc; 2) a M w /M n greater than 5; 3) a melt index (ASTM 1238, 190° C., 2.16 kg) of less than 0.7 dg/min; and 4) a g′ vis of 0.96 or less.

Подробнее
Номер записи: 80
18-03-2021 дата публикации

DUAL REACTOR SOLUTION PROCESS FOR THE PRODUCTION OF MULTIMODAL ETHYLENE-BASED POLYMER

Номер: US20210079138A1
Автор: DeLorbe Johnathan E., Demirors Mehmet, Gaubert Joshua B., Lin Yijian, Munjal Sarat, Wang Alec Y.
Принадлежит: Dow Global Technologies LLC

Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C-Ccomonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C-Ccomonomer catalyzed by one of the three catalysts. 1. A method for producing a multimodal ethylene-based polymer comprising:{'sub': 3', '12, 'passing ethylene monomer, at least one C-Ccomonomer, solvent, and optionally hydrogen in both a first solution polymerization reactor, and a second solution polymerization reactor,'} 'and wherein a third catalyst is passed to the other of the first or second solution polymerization reactors in which the first and second catalysts are not present;', 'wherein the first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst,'} [{'sub': 3', '12', '1, 'the first ethylene-based component is a polymerized reaction product of ethylene monomer and C-Ccomonomer catalyzed by the first catalyst, the first ethylene-based component having a first density (ρ);'}, {'sub': 3', '12', '2, 'the second ethylene-based component is a polymerized reaction product of ethylene monomer and C-Ccomonomer catalyzed by the second catalyst, the second ethylene-based component having a second density (ρ); and'}, {'sub': 3', '12', '3, 'the third ethylene-based component is a polymerized reaction product of ethylene monomer and C-Ccomonomer ...

Подробнее
Номер записи: 81
18-03-2021 дата публикации

ETHYLENE/ALPHA OLEFIN INTERPOLYMERCOMPOSITIONS WITH IMPROVED CONTINUOUS HIGH TEMPERATURE RESISTANCE

Номер: US20210079201A1
Автор: Chen Yong, Han Tao, Lyu Bo
Принадлежит:

A composition comprising the following components: A) an ethylene/alpha-olefin/diene interpolymer with MV (1+4, 125° C.)≥50; B) an ethylene/alpha-olefin copolymer with MV (1+4, 125° C.)<70; C) MgO; D) at least one carbon black filler; E) at least one hindered amine antioxidant; F) at least one peroxide. 1. A composition comprising the following components:A) an ethylene/alpha-olefin/diene interpolymer with MV(1+4, 125° C.)≥50;B) an ethylene/alpha-olefin copolymer with MV(1+4, 125° C.)≤80;C) MgO;D) at least one carbon black filler;E) at least one hindered amine antioxidant;F) at least one peroxide.2. The composition of claim 1 , wherein the weight ratio of component D to component C is from 2.0 to 20.3. The composition of claim 1 , wherein the weight ratio of component A to component B is from 0.2 to 4.0.4. The composition of claim 1 , wherein the weight ratio of component C to component E is from 1.0 to 10.5. The composition of claim 1 , wherein the ethylene/alpha-olefin copolymer of component B has a density from 0.850 g/cc to 0.880 g/cc.6. The composition of claim 1 , wherein the sum weight of component A and component B is present in an amount from 30 wt % to 70 wt % claim 1 , based on the weight of the composition.7. The composition of claim 1 , wherein the alpha-olefin of the ethylene/alpha-olefin copolymer” of component B is a C3-C10 alpha-olefin.8. The composition of claim 1 , wherein the MgO of component C is present in an amount from 0.5 to 10 wt % claim 1 , based on the weight of the composition.9. The composition of claim 1 , wherein component E is present in an amount from 0.1 to 3.0 wt % claim 1 , based on the weight of the composition.10. An article comprising at least one component formed from the composition of . Automotive Under-The-Hood (UTH) products, such as hoses, belts, seals/gaskets, mufflers and exhaust hangers can be manufactured from EPDM rubber formulations. The formulations should provide acceptable physical properties after vulcanization ...

Подробнее
Номер записи: 82
14-03-2019 дата публикации

SEMICONDUCTIVE POLYETHYLENE COMPOSITION

Номер: US20190077944A1
Автор: Hagstrand Per-Ola, Skogman Fredrik, Smedberg Annika, Svanberg Christer, Thorn Niklas
Принадлежит:

The invention relates semiconductive polyethylene composition, for use in power cables, with improved smoothness compared to other available semiconductive polymer compositions. This invention relates to a cable with a layer comprising the semiconductive polyethylene composition. 1. A semiconductive polyethylene composition for a cable comprising:{'sup': '3', 'a. a very low density polyolefin, having a density of less than or equal to 910 kg/m,'}b. an amount of at least 20 wt % of carbon black,wherein a gel count in the polyolefin, as defined in “Test methods”, for gels above 1000 μm is below 100 gels/kg.2. The semiconductive polyethylene composition according to comprising the very low density polyolefin wherein the gel count in the polyolefin claim 1 , as defined in “Test methods” claim 1 , for gels above 600 μm is below 500 gels/kg.3. The semiconductive polyethylene composition according to comprising the very low density polyolefin wherein the gel count in the polyolefin claim 1 , as defined in “Test methods” claim 1 , for gels above 300 μm is below 2000 gels/kg.4. The semiconductive polyethylene composition according to claim 1 , wherein the very low density polyolefin has a MFR(190° C. and 2.16 kg) in the range of 5 to 25 g/10 min.5. The semiconductive polyethylene composition according to claim 1 , wherein the very low density polyolefin comprise at least two fractions.7. The semiconductive polyethylene composition according to claim 1 , wherein the semiconductive polyethylene composition comprises an ethylene polar copolymer.8. The semiconductive polyethylene composition according to claim 7 , wherein the ratio of the MFR(190° C. and 2.16 kg) of the very low density polyolefin and the ethylene polar copolymer is from 0.5 to 4.9. The semiconductive polyethylene composition according to claim 7 , wherein the MFR(190° C. and 2.16 kg) of the very low density polyolefin and the ethylene polar copolymer differ less than 15 g/10 min.10. The semiconductive ...

Подробнее
Номер записи: 83
14-03-2019 дата публикации

RESIN COMPOSITION, AND MOLDED ARTICLE AND PIPE FORMED FROM SAID COMPOSITION

Номер: US20190077949A1
Автор: Ito Toshiyuki, Kanaya Hirotaka, Kawabe Kuniaki, Takahashi Yosuke
Принадлежит: Mitsui Chemicals, Inc.

The purpose of the present invention is to provide: a vinyl chloride resin composition having exceptional impact resistance, processability, and heat resistance. The present invention provides: a resin composition that contains 3-15 parts by mass of a rubber-based impact-absorbing material and 0.1-10 parts by mass of a modified olefin wax per 100 parts by mass of a vinyl chloride resin. This resin composition satisfies the following requirements (I)-(III). (I) The chlorine content of the vinyl chloride resin is 55-75% by mass. (II) The glass transition temperature (Tg) in differential scanning calorimetry (DSC) of the rubber-based impact-absorbing material (B) is 0° C. or lower. (III) The modified olefin wax contains at least one polar group selected from halogens and carboxylic acid derivatives, and the polar group content is within the range of 0.1-50% by mass. 1. A resin composition , comprising 3 to 15 parts by mass of rubber-based impact absorber (B) and 0.1 to 10 parts by mass of modified olefin wax (C) with respect to 100 parts by mass of vinyl chloride-based resin (A) , and satisfying the following requirements (I) to (III):(I) the vinyl chloride-based resin (A) has a chlorine content of 55 to 75 mass %;(II) the rubber-based impact absorber (B) has a glass transition temperature (Tg), measured by differential scanning calorimetry (DSC), of 0° C. or less; and(III) the modified olefin wax (C) contains at least one polar group selected from a halogen and a carboxylic acid derivative, a content of the polar group being in a range of 0.1 to 50 mass %.2. The resin composition according to claim 1 , wherein the chlorine content in the vinyl chloride-based resin (A) is 60 to 75 mass % in the requirement (I).3. The resin composition according to claim 1 , wherein the rubber-based impact absorber (B) contains a rubber component selected from a butadiene rubber claim 1 , an acrylic rubber and a silicone rubber.4. The resin composition according to claim 1 , wherein the ...

Подробнее
Номер записи: 84
22-03-2018 дата публикации

Resin compositions for extrusion coating

Номер: US20180079897A1
Автор: Douglas S. Ginger, Jian Wang, Mehmet Demirors
Принадлежит: Dow Global Technologies LLC

Polyethylene-based compositions are provided that can be used, for example, in the formation of film layers. In one aspect, a composition comprises (a) a first linear low density polyethylene having a density of 0.900 to 0.915 g/cm 3 and a melt index (I 2 ) of 5.0 to 25 g/10 min, wherein the linear low density polyethylene is a blend of at least two components: (i) 20-40% by weight of a second linear low density polyethylene, wherein the second linear low density polyethylene is a homogeneously branched ethylene/α-olefin interpolymer having a density of 0.870-0.895 g/cm 3 and a melt index (I 2 ) of 2.0-6.0 g/10 min; and (ii) 60-80% by weight of a third linear low density polyethylene, wherein the density of the third linear low density polyethylene is at least 0.02 g/cm 3 greater than the density of the second linear low density polyethylene and wherein the melt index (I 2 ) of the third linear low density polyethylene is at least twice the melt index (I 2 ) of the second linear low density polyethylene.

Подробнее
Номер записи: 85
23-03-2017 дата публикации

ETHYLENE-BASED POLYMER COMPOSITION FOR FILMS WITH IMPROVED TOUGHNESS

Номер: US20170081444A1
Автор: Castelluccio Anthony J., Demirors Mehmet, Ginger Douglas S., Jain Pradeep, Kapur Mridula Babli, WANG Jian
Принадлежит:

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. 1. 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).2. The composition of claim 1 , wherein the first composition has a MWCDI value less than claim 1 , or equal to claim 1 , 10.0.3. The composition of claim 1 , wherein the ethylene-based polymer is an ethylene/α-olefin interpolymer.4. The composition of claim 1 , wherein the first composition further comprises a second ethylene-based polymer.5. The composition of claim 4 , wherein the second ethylene-based polymer is an ethylene/α-olefin interpolymer.6. The composition of claim 1 , wherein the first composition has a ZSVR value from 1.2 to 3.0.7. The composition of claim 1 , wherein the first composition has a melt index ratio I10/I2 less than claim 1 , or equal to claim 1 , 9.2.8. The composition of claim 1 , wherein the first composition has a vinyl unsaturation level greater than 10 vinyls per 1 claim 1 ,000 claim 1 ,000 total carbons.9. The composition of claim 1 , wherein the ...

Подробнее
Номер записи: 86
02-04-2015 дата публикации

Polyethylene compositions and closures for bottles

Номер: US20150094418A1
Автор: Mark Edmund Weber, XiaoChuan Wang, Yves Lacombe
Принадлежит: Nova Chemicals International SA

A dual reactor solution process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have good processability, toughness, and environmental stress crack resistance combined with good organoleptic properties. The polyethylene compositions are suitable for compression molding or injection molding applications and are particularly useful in the manufacture of caps and closures for bottles.

Подробнее
Номер записи: 87
19-06-2014 дата публикации

POLYETHYLENE COMPOSITIONS HAVING HIGH DIMENSIONAL STABILITY AND EXCELLENT PROCESSABILITY FOR CAPS AND CLOSURES

Номер: US20140171582A1
Автор: Anseeuw Renee Laurel, Botros Matthew Zaki, Checknita Douglas Walter, Lacombe Yves, Rejman mark, Wang XiaoChuan
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

A dual reactor solution polymerization process gives high density polyethylene compositions containing a first ethylene copolymer and a second ethylene copolymer and which have high dimensional stability, excellent processability as well as good organoleptic properties and reasonable stress cracking resistance. The polyethylene compositions are suitable for compression molding or injection molding applications and are useful, for example, in the manufacture of caps and closures for bottles, and for example, in bottles containing non-pressurized liquids. 1. A closure for bottles , the closure comprising a polyethylene composition , the polyethylene composition comprising:{'sub': 2', 'w', 'n, 'sup': '3', '(1) about 10 to about 70 wt % of a first ethylene copolymer having a melt index I, of from 0.1 to 10 g/10 min; a molecular weight distribution M/M, of less than 3.0; and a density of from 0.930 to 0.960 g/cm; and'}{'sub': 2', 'w', 'n, 'sup': '3', 'claim-text': {'sup': 3', '3, 'sub': w', 'n', '21', 'Z', '21', '2, 'wherein the density of the second ethylene copolymer is less than 0.037 g/cmhigher than the density of the first ethylene copolymer; the ratio (SCB1/SCB2) of the number of short chain branches per thousand carbon atoms in the first ethylene copolymer (SCB1) to the number of short chain branches per thousand carbon atoms in the second ethylene copolymer (SCB2) is greater than 1.0; and wherein the polyethylene composition has a molecular weight distribution M/M, of from 2 to 7; a density of at least 0.950 g/cm; a high load melt index I, of from 150 to 400 g/10 min; a Z-average molecular weight M, of less than about 300,000; a melt flow ratio I/I, of from 22 to 50; a stress exponent of less than 1.40; and an ESCR Condition B (100% IGEPAL) of at least about 3.5 hrs.'}, '(2) about 90 to about 30 wt % of a second ethylene copolymer having a melt index I, of from 50 to 10,000 g/10 min; a molecular weight distribution M/M, of less than 3.0; and a density higher than ...

Подробнее
Номер записи: 88
19-03-2020 дата публикации

Conductor Jacket and Process for Producing Same

Номер: US20200087494A1
Автор: Esseghir Mohamed, Flory Anny L., Kmiec Chester J., Patel Rajen M., Seven Karl M.
Принадлежит:

The present disclosure provides a process. In an embodiment, the process includes blending a broad molecular weight distribution (MWD) ethylene-based polymer having an 121/12 ratio from 55 to 85 with a narrow MWD ethylene-based polymer having an 121/12 ratio from 20 to 50. The process includes forming a blend component comprising from 20 wt % to 45 wt % of the broad MWD ethylene-based polymer, from 80 wt % to 55 wt % of the narrow MWD ethylene-based polymer, and optional carbon black. The blend component has a density from 0.925 g/cc to 0.955 g/cc and an 121/12 ratio from 30 to 55. The process includes extruding the blend component over a conductor at a rate greater than 1.02 m/s, and forming a conductor jacket having a surface smoothness from 30 μ-inch to 80 μ-inch. 1. A process for producing a conductor jacket comprising:blending a broad molecular weight distribution (MWD) ethylene-based polymer having an I21/I2 ratio from 55 to 85 with a narrow MWD ethylene-based polymer having an I21/I2 ratio from 20 to 50;forming a blend component comprising from 20 wt % to 45 wt % of the broad MWD ethylene-based polymer, from 80 wt % to 55 wt % of the narrow MWD ethylene-based polymer and optional carbon black, the blend component having a density from 0.925 g/cc to 0.955 g/cc and an I21/I2 ratio from 30 to 55;extruding the blend component over a conductor at a rate greater than 1.02 m/s; andforming a conductor jacket having a surface smoothness from 30 μ-inch to 80 μ-inch.2. The process of comprising blending a broad MWD linear low density polyethylene (LLDPE) having a density from 0.915 g/cc to 0.925 g/cc and an I21/I2 ratio from 73 to 77 with a narrow MWD LLDPE having a density from 0.915 g/cc to 0.925 g/cc and an I21/I2 ratio from 30 to 35;forming a blend component comprising from 20 wt % to 45 wt % of the broad MWD LLDPE, from 70 wt % to 50 wt % of the narrow MWD LLDPE and from 1 wt % to 10 wt % carbon black, the blend component having a density from 0.925 g/cc to less ...

Подробнее
Номер записи: 89
19-03-2020 дата публикации

POLYETHYLENE AND CONTROLLED RHEOLOGY POLYPROPYLENE POLYMER BLENDS AND METHODS OF USE

Номер: US20200087495A1
Автор: Rodriguez Cortes Leonardo
Принадлежит:

Polymer blends, methods of making, and methods of using the polymer blends are described. A polymer blend can include a polyethylene (PE) polymer and a controlled rheology polypropylene (CRPP) polymer having a PE polymer to CRPP polymer (PE:CRPP) weight ratio of greater than 1:1. 1. A polymer blend comprising a polyethylene (PE) and a controlled-rheology polypropylene (CRPP) having a PE to CRPP (PE:CRPP) weight ratio of greater than 1:1.2. The polymer blend of claim 1 , wherein the CRPP comprises unreacted prodegradant blended therewith.3. The polymer blend of claim 2 , wherein the prodegradant is a peroxide compound.4. The polymer blend of claim 1 , wherein the polymer blend has a higher melt strength than the melt strength of the PE absent the CRPP.5. The polymer blend of claim 4 , wherein the higher melt strength of the polymer blend comprises an increased zero shear viscosity and a decreased breadth parameter as compared to the PE absent the CRPP.6. The polymer blend of claim 1 , wherein the PE is selected from the group consisting of a low density polyethylene (LDPE) claim 1 , a linear low density polyethylene (LLDPE) claim 1 , a medium density polyethylene (MDPE) claim 1 , a high density polyethylene (HDPE) claim 1 , an ethylene copolymer claim 1 , or blends thereof.7. The polymer blend of claim 6 , wherein the PE is a metallocene catalyst based polymer.8. The polymer blend of claim 1 , wherein the blend includes 1 wt. % to 10 wt. % of CRPP and 99 wt. % to 90 wt. % of PE.9. The polymer blend of claim 1 , wherein the CRPP has a melt flow rate (MRF) of at least 100 g/10 min.10. The polymer blend of claim 9 , wherein the CRPP comprises 0.001 wt. % to 5 wt. % of unreacted prodegradant.11. The polymer blend of claim 1 , further comprising one or more additives.12. The polymer blend of claim 11 , wherein the additive comprises an antiblocking agent claim 11 , an antistatic agent claim 11 , an antioxidant claim 11 , a neutralizing agent claim 11 , a blowing agent ...

Подробнее
Номер записи: 90
01-04-2021 дата публикации

CABLE JACKET COMPOSITION

Номер: US20210095108A1
Автор: Hjärtfors Anna, Liu Yi, SUMERIN Victor, Thorman Joseph
Принадлежит:

The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cmand MFRof 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable. 1. A cable jacket composition comprising a multimodal olefin copolymer , wherein the multimodal olefin copolymer has density of 0.935-0.960 g/cmand MFRof 2.2-10.0 g/10 min , and the composition has ESCR of at least 2000 hours and cable shrinkage of 0.70% or lower.2. The composition of claim 1 , wherein the multimodal olefin copolymer has MFRof 2.5-8.0 g/10 min.3. The composition of claim 1 , wherein the multimodal olefin copolymer has Mw of 55000-95000 g/mol.4. The composition of claim 1 , wherein the composition has a cable extrusion pressure of 144 bar or lower.5. The composition according to claim 1 , wherein the composition has Eta 300 of 500 Pa·s or lower.6. The composition according to claim 1 , wherein the multimodal olefin copolymer is a bimodal polymer mixture of a low molecular weight ethylene homo- or copolymer and a high molecular weight copolymer of ethylene and a comonomer selected from the list consisting of 1-butene claim 1 , 4-methyl-1-pentene claim 1 , 1-hexene or 1-octene.7. The composition according to claim 6 , wherein the multimodal olefin copolymer mixture is a bimodal polymer mixture of a low molecular weight ethylene homopolymer and a high molecular weight copolymer of ethylene and 1-butene.8. The composition according to further comprising a conductive filler in an amount of 0.05 to 5 wt % claim 1 , preferably 0.05 to 3 wt % of the entire composition.9. The composition according to essentially consisting of the multimodal olefin copolymer.10. A cable comprising the composition of ...

Подробнее
Номер записи: 91
05-04-2018 дата публикации

POLYOLEFIN BASED STRETCHED FILMS INCORPORATING DISPERSED AGENTS FOR OPTIMIZATION OF APPLICATION

Номер: US20180094127A1
Автор: Alaboson Justice, Effler, Hobson Jon W., JR. Lawrence J., Serrat Cristina, Shah Viraj, Tiwari Rashi, Williamson Alexander, Woelfle-Gupta Caroline
Принадлежит:

The present disclosure relates to a method of promoting optimal stretching of stretch film during a wrapping operation, which method comprises at least the following steps. First a resin suitable for making stretch films is selected. Then a dispersed agent is selected, preferably one which has a refractive index similar to the selected resin such that when a film is made comprising the resin and the dispersed agent, the film will appear somewhat clear. The dispersed agent is then mixed with the resin and a film is formed from the resin containing the dispersed agent. Finally, a load is manually wrapped using such film, wherein during wrapping, the film is stretched to a level where the film becomes more opaque. 1. A method of promoting optimal stretching of stretch film during a wrapping operation comprising the steps of:a. selecting a polyolefin resin;b. selecting a dispersed agent having a refractive index similar to the selected polyolefin resin such that when a film is made comprising the polyolefin resin and the dispersed agent, the film will have a certain level of clarity;c. admixing the dispersed agent into a melt of the polyolefin resin;d. forming a film from the admixture of step c; ande. wrapping an object using the film of step d, while stretching the film to a level where the film becomes more opaque.2. The method of further comprising the step of pre-orienting the film formed in step d prior to wrapping the object claim 1 , and wherein the level of clarity after the pre-orientation is still less than when stretching to the final desired elongation.3. The method of wherein the film becomes more opaque upon elongation in the range of from 200 to 300 percent.4. The method of wherein the dispersed agent is added in an amount of from 1 to 15 percent by weight of the film.5. The method of where the dispersed agent is an organic or inorganic filler.6. The method of where the dispersed agent is selected from the group consisting of acrylic beads claim 1 , ...

Подробнее
Номер записи: 92
28-03-2019 дата публикации

Coextruded, Polyethylene Skins on Polypropylene Core

Номер: US20190092914A1
Автор: Leger Christian, Lockhart Mark
Принадлежит: Jindal Films Americas LLC

This disclosure provides compositions and methods for making a sealable film, which may include a sealant layer comprising a skin layer on an intermediate layer, wherein both skin and intermediate layers comprise one or more ethylene-co-α-olefins and a total thickness from 0.25 μm through 20 μm, wherein α-olefins polymerized with ethylene in the one or more ethylene-co-α-olefins comprise one or more C-Cα-olefins. Further, the sealable film may include a core layer having a first side and a second side, wherein the first side is at least proximate to the sealant layer, wherein the sealable film comprises a seal strength of at least 1100 g/25 inch at 120° C. In other example embodiments, the seal strength may exceed 1275 g/inch or even 3000 g/inch at 120° C. And in still other example embodiments, the sealable film may be laminated to a substrate. 1. A sealable film comprising:{'sub': 4', '10, 'a sealant layer comprising a skin layer on an intermediate layer, wherein the skin layer comprises one or more ethylene-co-α-olefins and a thickness from 0.25 μm through 4.0 μm, wherein α-olefins polymerized with ethylene in the one or more ethylene-co-α-olefins comprise one or more C-Cα-olefins; and'}{'sub': 4', '10, 'an intermediate layer comprising one or more ethylene-co-α-olefins and a thickness from 1 μm through 15 μm, wherein α-olefins polymerized with ethylene in the one or more ethylene-co-α-olefins comprise one or more C-Cα-olefins; and'}a core layer having a first side and a second side, wherein the first side is at least proximate to the sealant layer,wherein the sealable film comprises a seal strength of at least 1275 g/25 mm at 120° C. and a hot-tack strength of at least 400 g/25 mm within a temperature range from 25 to 40° C.2. The sealable film of claim 1 , further comprising one or more additives in one or more layers of the sealable film.3. The sealable film of claim 1 , further comprising a substrate laminated to the sealable film.4. The sealable film of ...

Подробнее
Номер записи: 93
26-06-2014 дата публикации

Branched Polyethylene With Improved Processing and High Tear Films Made Therefrom

Номер: US20140179872A1
Автор: Fiscus David M., JR. John F., McCullough Laughlin G., Reimers Jay L., Walzer
Принадлежит:

This invention relates to inventive ethylene-based copolymers comprising 75.0 wt % to 99.5 wt % of ethylene-derived units and 0.5 wt % to 25.0 wt % of C3 to C20 olefin derived units; the inventive ethylene-based copolymer having: a density in the range of from 0.900 to less than 0.940 g/cm; a g′(vis) of less than 0.80; a melt index, I, of from 0.25 to 1.5 g/10 min.; a Mw/Mn within a range from 3.0 to 6.0, and Mz/Mn greater than 8.0; and an absence of a local minimum loss angle at a complex modulus, G*, of 1.00×10to 3.00×10Pa. 1. An ethylene-based copolymer comprising 75.0 wt % to 99.5 wt % of ethylene-derived units and 0.5 wt % to 25.0 wt % of Cto Colefin derived units; the ethylene-based copolymer having:{'sup': '3', 'a) a density in the range of from 0.900 to less than 0.950 g/cm;'}b) a g′(vis) of less than 0.80;{'sub': '2', 'c) a melt index, I, of from 0.25 to 1.5 g/10 min.;'}d) a Mw/Mn within a range from 3.0 to 6.0;e) a Mz/Mn of greater than 8.0; and{'sup': 4', '4, 'f) an absence of a local minimum loss angle at a complex modulus, G*, of 1.00×10to 3.00×10Pa.'}2. The ethylene-based copolymer of claim 1 , wherein the ethylene-based copolymer has a complex modulus claim 1 , G*of greater than 50.00×10Pa.3. The ethylene-based copolymer of claim 1 , wherein the ethylene-based copolymer displays a multimodality in dissolution temperatures in a TREF analysis.4. The ethylene-based copolymer of claim 3 , wherein the ethylene-based copolymer has a T claim 3 , to Tvalue of 5° C. or greater claim 3 , wherein Tis the temperature at which 10 wt % of the eluted polymer is obtained claim 3 , and Tis the temperature at which 90 wt % of the eluted polymer is obtained in a TREF analysis.5. The ethylene-based copolymer of claim 4 , wherein at least one of Tor Tis in the range of from 45° C. to 85° C.6. The ethylene-based copolymer of claim 4 , wherein Tis greater than 90° C.7. The ethylene-based copolymer of claim 1 , wherein if the ethylene-based copolymer comprises Cmonomer ...

Подробнее
Номер записи: 94
26-06-2014 дата публикации

Polyethylene blend compositions and film

Номер: US20140179873A1
Автор: Karen Grabow, Patrick Lam, Victoria Ker
Принадлежит: Nova Chemicals International SA

A polymer blend comprising first and second polyethylene copolymers is presented which has good processability, and which when made into film shows good toughness-stiffness balance, reasonable MD tear, as well as good optical properties.

Подробнее
Номер записи: 95
16-04-2015 дата публикации

Expandable composite resin bead

Номер: US20150105483A1
Автор: Masaomi Shima
Принадлежит: JSP Corp

An expandable composite resin bead comprises: a composite resin containing a polyethylene resin and a polystyrene resin; and a blowing agent impregnating the composite resin. The composite resin contains 5 to 20 mass % of the polyethylene resin and 80 to 95 mass % of the polystyrene resin. The blowing agent is an organic physical blowing agent. Furthermore, in the expandable composite resin bead, a predetermined swelling degree in methyl ethyl ketone at a temperature of 23° C. is not lower than 1.25.

Подробнее
Номер записи: 96
26-03-2020 дата публикации

HALOGEN-FREE RESIN COMPOSITION AND INSULATION WIRE

Номер: US20200095406A1
Автор: Aoyama Takashi, Ashihara Shingo, Yasaki Hirotaka
Принадлежит:

A halogen-free resin composition is disclosed comprising a base polymer. In the halogen-free resin composition, the content of a compound including magnesium is equal to or less than 30 parts by mass relative to 100 parts by mass of the base polymer; and the content of a compound including calcium is equal to or less than 30 parts by mass relative to 100 parts by mass of the base polymer. The halogen-free resin composition has an oxygen index of 20 or more. Preferably, the halogen-free resin composition further includes a heavy metal deactivator. Preferably, the base polymer includes a polymer that has a melting point of 120° C. 1. A halogen-free resin composition , comprising:a base polymer,wherein the content of a compound including magnesium is equal to or less than 30 parts by mass relative to 100 parts by mass of the base polymer,wherein the content of a compound including calcium is equal to or less than 30 parts by mass relative to 100 parts by mass of the base polymer, andwherein the halogen-free resin composition has an oxygen index of 20 or more.2. The halogen-free resin composition according to claim 1 ,wherein the halogen-free resin composition further includes a heavy metal deactivator.3. The halogen-free resin composition according to claim 1 ,wherein the base polymer includes a polymer that has a melting point greater than 120° C.4. The halogen-free resin composition according to claim 1 ,wherein the hue of the halogen-free resin composition is black, yellow, or green.5. The halogen-free resin composition according to claim 1 ,wherein the content of the compound including calcium is equal to or more than 5 parts by mass relative to 100 parts by mass of the base polymer.6. The halogen-free resin composition according to claim 1 ,wherein the content of the compound including magnesium is equal to or more than 5 parts by mass relative to 100 parts by mass of the base polymer.7. The halogen-free resin composition according to claim 1 ,wherein the halogen- ...

Подробнее
Номер записи: 97
26-03-2020 дата публикации

BLENDS OF LINEAR LOW DENSITY POLYETHYLENES

Номер: US20200095407A1
Автор: BORSE Nitin, Chandak Swapnil B.
Принадлежит:

A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same. 1. A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene (ZN-LLDPE) and (B) a metallocene catalyst-made linear low density polyethylene (MCN-LLDPE); wherein the (A) ZN-LLDPE is from 11 to 79 weight percent (wt %) of the total weight of (A) and (B) and the (B) MCN-LLDPE is from 89 to 21 wt % of the total weight of (A) and (B); wherein by itself (A) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 gram per 10 minutes (g/10 min.) measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 gram per cubic centimeter (g/cm) , measured according to ASTM D792-13; and (iii) no detectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and wherein by itself (B) is independently characterized by properties (i) to (iii): (i) a melt index (“I” , 190° C. , 2.16 kg) of 0.5 to 2.5 g/10 min. measured according to ASTM D1238-04; (ii) a density from 0.905 to 0.930 g/cm , measured according to ASTM D792-13; and (iii) no detectable amount of long chain branching per 1 ,000 carbon atoms (“LCB Index”) , measured according to LCB Test Method; and with the proviso that the density of constituent (B) is within ±0.003 g/cmof the density of constituent (A); wherein the (A) ZN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the Ziegler-Natta catalyst and the (B) MCN-LLDPE is made by copolymerizing ethylene and 1-butene in the presence of the metallocene ...

Подробнее
Номер записи: 98
08-04-2021 дата публикации

CAST POWER STRETCH FILMS WITH IMPROVED LOAD CONTAINMENT FORCE

Номер: US20210101378A1
Автор: Pirtle Shaun Eugene
Принадлежит:

The present disclosure generally relates to compositions and methods for incorporating higher density metallocene linear low density polyethylene (m-LLDPE) into cast power stretch films. When compared to conventional machine films on a gauge-by-gauge basis, films containing the properly selected m-LLDPE may offer increased load containment force, reduced application force, and comparable elongation and puncture resistance properties. 1. A cast power stretch film comprised of a higher density m-LLDPE , the cast power stretch film having a total film thickness.2. The cast power stretch film according to claim 1 , wherein the higher density m-LLDPE is blended with resins chosen from the group consisting of polyethylenes claim 1 , polyethylene copolymers claim 1 , polypropylenes claim 1 , and polypropylene copolymers.3. The cast power stretch film according to claim 1 , wherein the film is comprised of a plurality of discrete layers.4. The cast power stretch film according to claim 3 , wherein a discrete layer of the film is comprised of the higher density m-LLDPE.5. The cast power stretch film according to claim 4 , wherein the discrete layer of the film that is comprised of the higher density m-LLDPE has a thickness ranging from 5 to 70 percent of the total film thickness.6. The cast power stretch film according to claim 5 , wherein the discrete layer of the film that is comprised of the higher density m-LLDPE has a thickness of approximately 32 percent of the total film thickness.7. The cast power stretch film according to claim 1 , wherein the higher density m-LLDPE has a melt index ranging from 0.5 to 8.0 (g/10 min. @190° C./2.16 kg).8. The cast power stretch film according to claim 7 , wherein the higher density m-LLDPE has a melt index ranging from 1.0 to 3.0 (g/10 min. @190° C./2.16 kg).9. The cast power stretch film according to claim 7 , wherein the higher density m-LLDPE has a melt index of approximately 2.0 (g/10 min. @ 190° C./2.16 kg).10. The cast power ...

Подробнее
Номер записи: 99
08-04-2021 дата публикации

FLEXIBLE ROTATIONALLY MOLDED ARTICLE

Номер: US20210102050A1
Автор: Bellehumeur Celine, Fereydoon Maryam, Phinney Amy
Принадлежит: NOVA CHEMICALS (INTERNATIONAL) S.A.

Rotomolded articles, especially flexible rotomolded articles are made from an ethylene interpolymer product having a melt index, Iof from 2.5 to 8.0 g/10 min, a density of from 0.905 to 0.920 g/cm; and a Dilution Index, Yd, greater than 0. The ethylene interpolymer product comprises: (I) a first ethylene interpolymer; (II) a second ethylene interpolymer, and; (III) optionally a third ethylene interpolymer. 1. A rotomolded article prepared from an ethylene interpolymer product having a melt index , Iof from 2.5 to 8.0 g/10 min , and a density of from 0.905 to 0.920 g/cm; wherein said ethylene interpolymer product comprises:(I) a first ethylene interpolymer;(II) a second ethylene interpolymer, and;(III) optionally a third ethylene interpolymer; {'br': None, 'sup': 'A', 'sub': a', 'n, '(L)M(P1)b(Q)'}, 'wherein said first ethylene interpolymer is produced using a single site catalyst formulation comprising a component (i) defined by the formula'}{'sup': 'A', 'sub': 1-10', '1-10', '5-10', '1-18', '1-8', '6-10', '1-8', '1-8, 'wherein Lis chosen from unsubstituted cyclopentadienyl, substituted cyclopentadienyl, unsubstituted indenyl, substituted indenyl, unsubstituted fluorenyl and substituted fluorenyl; M is a metal chosen from titanium, hafnium and zirconium; PI is a phosphinimine ligand; and Q is independently chosen from a hydrogen atom, a halogen atom, a Chydrocarbyl radical, a Calkoxy radical and a Caryl oxide radical; wherein each of said hydrocarbyl, alkoxy, and aryl oxide radicals may be unsubstituted or further substituted by a halogen atom, a Calkyl radical, a Calkoxy radical, a Caryl or aryloxy radical, an amido radical which is unsubstituted or substituted by up to two Calkyl radicals or a phosphido radical which is unsubstituted or substituted by up to two Calkyl radicals; wherein a is 1; b is 1; n is 1 or 2; and (a+b+n) is equivalent to the valence of the metal M, and;'}wherein said second ethylene interpolymer is produced using a first Ziegler-Natta ...

Подробнее
Номер записи: 100