WO2025254855A1 - Polymérisation de compositions à base de propylène présentant une réponse améliorée à l'hydrogène et procédés associés - Google Patents

Polymérisation de compositions à base de propylène présentant une réponse améliorée à l'hydrogène et procédés associés

Info

Publication number
WO2025254855A1
WO2025254855A1 PCT/US2025/030835 US2025030835W WO2025254855A1 WO 2025254855 A1 WO2025254855 A1 WO 2025254855A1 US 2025030835 W US2025030835 W US 2025030835W WO 2025254855 A1 WO2025254855 A1 WO 2025254855A1
Authority
WO
WIPO (PCT)
Prior art keywords
catalyst system
polymerization
carbon atoms
propylene
transition metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2025/030835
Other languages
English (en)
Inventor
Christopher G. Bauch
Michael D. Spencer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
ExxonMobil Technology and Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ExxonMobil Technology and Engineering Co filed Critical ExxonMobil Technology and Engineering Co
Publication of WO2025254855A1 publication Critical patent/WO2025254855A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/04—Monomers containing three or four carbon atoms
    • C08F110/06—Propene

Definitions

  • the present disclosure relates to polyolefin polymerization, and more particularly to compositions and methods for producing polypropylenes and co-monomers thereof having increased hydrogen response.
  • Ziegler-Natta catalysts can suffer from relatively low melt flow capability because they are limited by the concentration of hydrogen achievable during the polymerization process.
  • concentration of hydrogen itself is limited by its solubility’ in propylene and co-monomers thereof at the temperature and pressure of the polymerization equipment.
  • external catalyst donors used to control polypropylene and co-polymers thereof crystallinity also affect response to hydrogen.
  • Hydrogen response influences the molecular weight of the produced polymer, where an increase in hydrogen response produces lower molecular weight polymers and a decrease in hydrogen response produces higher molecular weight polymers. And as molecular weight decreases, so too does the polymers melt flow rate.
  • Polypropylene polymers and co-polymers having a low melt flow can limit the compatibility 7 of the polypropylene compositions and co-polymers thereof with various manufacturing techniques (e.g., extrusion and high throughput molding techniques).
  • a Ziegler-Natta catalyst system for propylene and co-monomers thereof polymerization that is capable of producing polymers that exhibits a high response to hydrogen and thus is characterized by high melt flow, with substantially undiminished crystallinity' as defined by xylene solubles is desirable.
  • a catalyst system for the polymerization of olefin monomers.
  • the catalyst system includes a Ziegler-Natta catalyst, a dialkyl diamino silane external donor, and a tetraethyl orthosilicate (TEOS) external donor.
  • TEOS tetraethyl orthosilicate
  • a method includes introducing a catalyst system into a reactor, the catalyst system including a Ziegler-Natta catalyst, a dialkyd diamino silane external donor, and a tetraethyl orthosilicate (TEOS) external donor, and feeding olefin monomers into the reaction zone under conditions for polymerization, thereby resulting a polyolefin polymers.
  • a catalyst system including a Ziegler-Natta catalyst, a dialkyd diamino silane external donor, and a tetraethyl orthosilicate (TEOS) external donor
  • FIG. 1 shows a chart of MFR for various concentrations of polymerization results according to the present disclosure compared to comparative polymerization results.
  • FIG. 2 shows a chart of %XS for various concentrations of polymerization results according to the present disclosure compared to comparative polymerization results.
  • FIG. 3 shows a chart of Activity' for various concentrations of polymerization results according to the present disclosure compared to comparative polymerization results.
  • the present disclosure relates to polyolefin polymerization, and more particularly to compositions and methods for producing polypropylenes and co-monomers thereof having increased hydrogen response.
  • compositions and methodology for the production of polypropylene compositions and co-monomer compositions thereof having increased melt flow without compromised crystallinity 7 which will be suitable for one or more particular enduses.
  • the present disclosure provides a methodology that employs compositional details to permit increased melt flow of polypropylene compositions and co-monomers thereof by utilizing a combination of a Ziegler-Natta catalyst and a combination of two external electron donors: a dialkyl diamino silane and tetraethyl orthosilicate (TEOS).
  • TEOS tetraethyl orthosilicate
  • the dialkyl diamino silane has the composition of R ⁇ SiiNHR 2 ⁇ , as provided below, and the TEOS is present in an amount of 50% by weight (wt.%) to 90 wt.% of the Ziegler-Natta catalyst system; upon polymerization of olefin monomers, the catalyst system exhibits a level of xylene solubles less than about 3 wt.% and a melt flow rate of greater than 700 grams per gram per hour.
  • the combined ratio of the dialkyl diamino silane and TEOS external donors to the titanium (Ti) in the Ziegler-Natta catalyst is in the range of about 8 to 50 molar ratio, encompassing any value and subset therebetween, such as about 10 to 50 molar ratio, or about 20 to 50 molar ratio, or about 30 to 50 molar ratio, or about 40 to 50 molar ratio, or about 50 molar ratio.
  • the term “catalyst system,” and grammatical variants thereof, refers to a Ziegler-Natta catalyst in combination with the at least two external donors described herein: a di al ky 1 diamino silane and tetraethyl orthosilicate (TEOS) to effect polymerization of olefins to polyolefins.
  • TEOS tetraethyl orthosilicate
  • the term “Ziegler-Natta catalyst” may be used interchangeably with simply “catalyst,” and may be comprised of a solid and supported catalyst from titanium and a co-catalyst, usually of aluminum.
  • a “polymer,” and grammatical variants thereof, refers to act as stereoselective control agents to control the amount of atactic or non-stereoregular polymer produced during polymerization in the presence of a Ziegler-Natta catalyst.
  • a “polymer,” and grammatical variants thereof, is comprised of polymerized olefin monomers, such as polymerized polypropylene homopolymers of propylene monomer (propylene-derived units) or co-monomers of polypropylene and additional olefin monomers, such as ethylene.
  • a “reactor,” and grammatical variants thereof, as used herein, is any type of vessel or containment device in any configuration of one or more reactors, and/or one or more reaction zones, wherein a similar polymer is produced; however, two or more reactors that are fluidly connected with one another can each produce separate polymers.
  • melt flow rate or “MFR,” and grammatical variants thereof, is the number of grams extruded in 10 minutes under the action of a standard load and is an inverse measure of viscosity.
  • a high MFR implies low viscosity and low MFR implies high viscosity.
  • polymers are shear thinning, which means that their resistance to flow decreases as the shear rate increases. This is due to molecular alignments in the direction of flow and disentanglements.
  • MFR (12, 230°C, 2.16 kg) is determined according to ASTM D-1238-E(20) and is measured in decigrams per minute (dg/min).
  • the term “activity,” and grammatical variants thereof, refers to the ability of a catalyst system to increase the rate of a reaction, such as polymerization, and is measured in grams per gram per hour (g/g/hr).
  • the term “percent xylene solubles” or “%XS,” and grammatical variants thereof, refers to the percentage of soluble species in a polymer.
  • the %XS is measured according to ASDM D5492-17 (2017) and is measured by weight or by CRYSTEX® (approved for xylene solubles determination by ISO 16152) (Polymer Char, Valencia, Spain).
  • the %XS is a measure of the crystallinity of a polymer associated with the alignment of its molecular chains, and higher crystallinity may lead to a decrease in MFRs.
  • IV is a measure of a solutes’ contribution to the viscosity of a polymer.
  • the polymers described herein were tested for IV by the use of a soluble fractional analysis instrument (“SFRA”), using a CRYSTEXTM QC, Polymer Char (Valencia, Spain) instrument. The IV is reported in deciliters per gram (dL/g).
  • the Ziegler-Natta catalyst system is designed to increase MFR in response to hydrogen of a polyolefin polymer, such as a polypropylene polymer or co-monomer thereof.
  • the catalyst system comprises a Ziegler-Natta catalyst and at least two external donors of a dialkyl diamino silane (e.g, R 1 2Si(NHR 2 )2) and TEOS. It is shown that the inclusion of the dialkyl diamino silane and TEOS as part of the catalyst system improves both MFR in response to hydrogen, particularly at equal or higher concentrations of the combined external donors to the Ziegler-Natta catalyst, without substantially influencing %XS.
  • a dialkyl diamino silane e.g, R 1 2Si(NHR 2 )2
  • Suitable Ziegler-Natta catalyst components for use as part of the catalyst system of the present disclosure are not considered to be particularly limited. That is, Ziegler-Natta catalyst components in combination with a dialkyl diamino silane and TEOS, as described herein, can increase MFR response to hydrogen of a polyolefin polymer, without substantially influencing %XS, compared to a Ziegler-Natta catalyst system utilizing traditional external donors. Moreover, the MFR response to hydrogen of the present disclosure is improved relative to a dialkyl diamino silane external donor alone or TEOS alone.
  • the Ziegler-Natta catalyst components of the present disclosure include a transition metal, or a transition metal halide, compound, in combination with an alkyl aluminum compound.
  • the transition metal or transition metal halide may be selected from Group IV -VII (e.g., typically titanium, chromium, vanadium, zirconium, and/or hafnium).
  • the alkyl aluminum compound may be an organoaluminumaluminum compound including, but not limited to, a dialkylaluminum (e.g., diethylaluminum chloride); a trialkylaluminum (e.g., triethylaluminum, triisopropylaluminum, tri-n-butylaluminum, tri-n-hexylaluminum, and triisobutylaluminum), an alkylaluminum halide (e.g, diethylaluminum chloride, diethylaluminum bromide, and diethylaluminum hydride). Any combination of the foregoing may be used. Triethylaluminum may be preferred in the compositions and methods of the present disclosure.
  • a dialkylaluminum e.g., diethylaluminum chloride
  • a trialkylaluminum e.g., triethylaluminum, triisopropy
  • suitable Ziegler-Natta catalysts may include, but are not limited to, a mixture of TiCl x , MgCh, or SiCL with Al(Alkyl)3; a mixture of Ti-, Zr-, or Hf-based complexes with methylaluminoxane (MAO); a mixture of titanium tetrachloride (TiCh) with triethylaluminum (Al(C2Hs)3); a mixture of titanium(III) chloride (TiCh) with AlfCdHs)?
  • a mixture of TiCl x , MgCh, or SiCL with Al(Alkyl)3 a mixture of Ti-, Zr-, or Hf-based complexes with methylaluminoxane (MAO)
  • TiCh titanium tetrachloride
  • Al(C2Hs)3 triethylaluminum
  • TiCh titanium(III) chloride
  • VCU vanadium tetrachloride
  • Al ⁇ Hs Cl di ethylaluminum chloride
  • a magnesium compound e.g, MgCb
  • a titanium compound e.g. an alkoxy titanium, a titanium halide, an alkoxytitanium halide, any combination thereof
  • Al(Alkyl)3 or an Al(Alkyl)2 e.g., Al(Alkyl)2(Alkenyl)
  • An example of a suitable Ziegler- Natta catalyst includes the catalyst provided in U.S. Patent Publication No.
  • dialkyl diamino silane external donors of the present disclosure of the present disclosure are not considered to be particularly limited, provided they are compatible with the selected Ziegler-Natta catalyst and TEOS.
  • the dialkyl diamino silanes for use as an external donor (in combination with TEOS) for polymerization of a polyolefin monomer as described herein may have the formula:
  • R 1 2 Si(NHR 2 ) 2 where R 1 is a linear, branched, or cyclic alkyl group having between 3 and 6 carbon atoms, encompassing any value and subset therebetween; and R 2 is a linear, branched, or cyclic alkyl group having between 1 and 6 carbon atoms, encompassing any value and subset therebetween.
  • the dialkyl diamino silane may have the composition of: R 1 2Si(NHR 2 )2.
  • R 1 is a cyclic alkyl having 4 carbon atoms, 5 carbon atoms, or 6 carbon atoms, or between 4 and 6 carbon atoms.
  • R 2 is a linear alkyl having 1 to 6 carbon atoms.
  • R 1 is a cyclic alkyl having 4 carbon atoms, 5 carbon atoms, or 6 carbon atoms; and R 2 is a linear alkyd having 1 to 6 carbon atoms.
  • the catalyst system of the present disclosure may further comprise an internal (electron) donor to modify the surface of a Ziegler-Natta catalyst.
  • Suitable examples of internal donors may include, but are not limited to an alkyl benzoate, a phthalate, a succinate, a diether, and any combination thereof.
  • Polymerization of olefins using the Ziegler-Natta catalyst is influenced by the inclusion of the combination of external donors of a dialkyl diamino silane and TEOS, as described herein.
  • the Ziegler-Natta catalyst system comprises at least an external donor of a dialkyl diamino silane and TEOS.
  • the dialkyl diamino silane external donor comprises the above-described composition of R ⁇ SifNHR 2 ⁇ .
  • the Ziegler-Natta catalyst component is coupled with the external donor combination of a dialkyl diamino silane and TEOS in an amount in which TEOS is present in an amount of about 45 wt.% to about 95 wt.% of the dialkyl diamino silane, or about 50 wt.% t or about 90 wt.%, or about 50 wt.% to about 80 wt.%, or about 45 wt.% to about 70 wt%, or about 60 wt.% to about 70 wt.%, or about 70 wt.% to about 80 wt.%, or about 80 wt.% to about 95 wt.%, encompassing any value and subset therebetween.
  • TEOS is well known as a poor external donor alone, but when in combination with the dialkyl diamino silane external donors of the present disclosure, even at high concentrations of TEOS, the external donor activity is greatly improved.
  • the resultant olefin polymers polymerized in the presence of the catalyst system described herein comprise a xylene soluble component composing less than about 5 wt.%. such as in the range of about 0. 1 wt.% to about 5 wt.%, or about 0.5 wt.% to about 3 wt.%, or about 1 wt.% to about 3 wt.%, or about 2 wt.% to about 3 wt.%, or about 0.5 wt.% to about 1 wt.%, or about 1 wt.% to about 2 wt.%, encompassing any value and subset therebetween.
  • the resultant olefin polymers polymerized in the presence of the catalyst system described herein demonstrate an increased MFR response to hydrogen.
  • the MFR will depend on solubility limitations, which include the type of equipment used (e.g., plant equipment that is liquid-full v. lab equipment having a head space) and the hydrogen concentration in propylene.
  • solubility limitations include the type of equipment used (e.g., plant equipment that is liquid-full v. lab equipment having a head space) and the hydrogen concentration in propylene.
  • the aforementioned MRF values are based on the definition provided above.
  • the resultant olefin polymers polymerized in the presence of the catalyst system described herein exhibit good activity as would be recognized by one of skill in the art, such as greater than 25,000 g/g/hr, such as in the range of about 25,000 g/g/hr to about 140,000 g/g/hr. or about 30,000 g/g/hr to about 60,000 g/g/hr, or about 40,000 g/g/hr to about 60,000 g/g/hr. encompassing any value and subset therebetween.
  • Polymerization is performed using certain reaction conditions, such as temperature, pressure, and reaction time suitable for the polymerization of the propylene monomers and any other selected olefin monomers for production of a polypropylene polymer or polypropylene co-polymer, respectively.
  • Suitable monomers, in addition to propylene include, but are not limited to, ethylene, 1-butene, 1-pentene, 4-methyl-l -pentene, vinylcyclohexane, and any combination thereof.
  • Preferred olefm monomers include propylene alone, propylene in combination with ethylene, and propylene in combination with 1-butene.
  • Polymerization is carried out in a reaction zone of one or more reactors, such as a gas phase reactor or other reactor suitable for polymerization. While reaction conditions may vary' depending on a number of factors, such as the particular olefin monomer selections, the following conditions are suitable.
  • the polymerization temperatures are preferably about 200°C or lower, and more preferably about 100°C or lower, such as in the range of about 50°C to about 200°C, or about 70°C to about 100°C, encompassing any value and subset therebetween.
  • the polymerization pressure is preferably about 10 MPa or less, and more preferably about 5 MPa or less, such as in the range of about 1 MPa to about 10 MPa, or about 1 MPa to about 5 MPa, encompassing any value and subset therebetween.
  • the polymerization time, or the residence time during polymerization is normally about 1 minute to about 5 hours, encompassing any value and subset therebetween.
  • Examples of the polymerization method include a slurry polymerization method in which a solvent of an inert hydrocarbon compound such as cyclohexane and heptane is used, a bulk polymerization method in which a solvent such as liquefied propylene is used, and a gas phase polymerization method in which a solvent is substantially not used.
  • Nonlimiting example embodiments of the present disclosure include:
  • Embodiment A A catalyst system for the polymerization of olefm monomers comprising: a Ziegler-Natta catalyst; a dialkyl diamino silane external donor; and a tetraethyl orthosilicate (TEOS) external donor.
  • a Ziegler-Natta catalyst comprising: a Ziegler-Natta catalyst; a dialkyl diamino silane external donor; and a tetraethyl orthosilicate (TEOS) external donor.
  • TEOS tetraethyl orthosilicate
  • Embodiment B A method comprising: introducing a catalyst system into a reactor, the catalyst system comprising: a Ziegler-Natta catalyst; a dialkyl diamino silane external donor, and a tetraethyl orthosilicate (TEOS) external donor; and feeding olefm monomers into the reaction zone under conditions for polymerization, thereby resulting a polyolefin polymers.
  • a catalyst system comprising: introducing a catalyst system into a reactor, the catalyst system comprising: a Ziegler-Natta catalyst; a dialkyl diamino silane external donor, and a tetraethyl orthosilicate (TEOS) external donor; and feeding olefm monomers into the reaction zone under conditions for polymerization, thereby resulting a polyolefin polymers.
  • TEOS tetraethyl orthosilicate
  • Nonlimiting example embodiments A and B may include one or more of the following elements:
  • Element 1 wherein the dialkyl diamino silane is represented by the formula R 1 2Si(NHR 2 )2, where R 1 is a linear, branched, or cyclic alkyl group having between 3 and 6 carbon atoms and R 2 is a linear, branched, or cyclic alkyl group having between 1 and 6 carbon atoms.
  • Element 2 Wherein the dialkyl diamino silane is represented by the formula R 1 2Si(NEIR 2 )2, where R 1 is a cyclic alkyl group having 4 carbon atoms and R 2 is a linear, branched, or cyclic alkyl group having between 1 and 6 carbon atoms.
  • Element 3 Wherein the dialkyl diamino silane is represented by the formula R 1 2Si(NEIR 2 )2, where R 1 is a cyclic alk l group having 5 carbon atoms and R 2 is a linear, branched, or cy devis alky l group having between 1 and 6 carbon atoms.
  • Element 4 Wherein the dialkyl diamino silane is represented by the formula R 1 2Si(NHR 2 )2. where R 1 is a cyclic alkyl group having 6 carbon atoms and R 2 is a linear, branched, or cyclic alkyl group having between 1 and 6 carbon atoms.
  • Element 5 Wherein the dialkyl diamino silane is represented by the formula R’2Si(NHR 2 )2, where R 1 is a linear, branched, or cyclic alkyl group having between 3 and 6 carbon atoms and R 2 is a linear alkyl group having between 1 and 6 carbon atoms.
  • Element 6 Wherein the catalyst system comprises a transition metal compound and an alkyl aluminum compound.
  • Element 7 Wherein the catalyst system comprises a transition metal compound and an alkyl aluminum compound, and wherein the transition metal is a transition metal halide.
  • Element 8 Wherein the catalyst system comprises a transition metal compound and an alkyl aluminum compound, and wherein the alkylaluminum compound is a dialkylaluminum or a tri alk laluminum.
  • Nonlimiting combinations applicable to embodiments A and B include: 1, 2, and/or 5-8; 1 3, and/or 5-8; 1 and/or 5-8; 2 and/or 5-8; 3 and/or 5-8; 4 and/or 5-8; and any combination of 5-8, without limitation.
  • Nonlimiting example embodiment B may include one or more of the following elements: [0057] Element 9: Wherein the olefin monomers are selected from the group consisting of propylene, ethylene, 1-butene, 1-pentene, 4-methyl-l -pentene, vinylcyclohexane. and any combination thereof.
  • Element 10 Wherein the olefin monomers are propylene.
  • Element 11 Wherein the olefin monomers are propylene and ethylene.
  • Element 12 Wherein the polyolefin polymers have a xylene solubles value of less than about 3%.
  • Element 13 Wherein the polyolefin polymers have a xylene solubles value in the range of about 0.5% to about 3%.
  • Nonlimiting combinations applicable to embodiment B include: 9 and 12; 9 and 13; 10 and 12; 10 and 13; 11 and 12; 11 and 13, without limitation.
  • the combination of dialkyl diamino silane and TEOS show an increase in MFR response to hydrogen. Moreover, the greater the TEOS concentration in the catalyst system (despite being known as a poor external donor), the greater the MFR and. thus, the hydrogen response. Moreover, the addition of DAS1 and TEOS does not substantially influence the %XS at concentrations of less than about 95% TEOS, indicating that cry stallinity has not substantially changed. Comparative PTES samples show' generally higher %XS and substantially no change in MFR. Accordingly, the addition of a combination of external donors of a dialkyl diamino silane and TEOS to a Ziegler-Natta catalyst component can substantially increase hydrogen response and MFR. The results are visually provided in FIGS. 1-3.
  • compositions described herein may be free of any component, or composition not expressly recited or disclosed herein. Any method may lack any step not recited or disclosed herein.
  • composition, element, or elements are considered synonymous with the term “including.”
  • transitional phrase “comprising” it is understood that we also contemplate the same composition or group of elements with transitional phrases “consisting essentially of,” “consisting of,” “selected from the group of consisting of,” or “is” preceding the recitation of the composition, element, or elements and vice versa.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

L'invention concerne un système de polymérisation d'oléfine pour augmenter la réponse d'écoulement à l'état fondu à l'hydrogène de polymères polyoléfiniques résultants. Le système catalyseur pour la polymérisation de monomères oléfiniques comprend un catalyseur Ziegler-Natta en combinaison avec deux donneurs externes d'un dialkyldiamino silane et d'orthosilicate de tétraéthyle.
PCT/US2025/030835 2024-06-06 2025-05-23 Polymérisation de compositions à base de propylène présentant une réponse améliorée à l'hydrogène et procédés associés Pending WO2025254855A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202463656688P 2024-06-06 2024-06-06
US63/656,688 2024-06-06

Publications (1)

Publication Number Publication Date
WO2025254855A1 true WO2025254855A1 (fr) 2025-12-11

Family

ID=96141335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2025/030835 Pending WO2025254855A1 (fr) 2024-06-06 2025-05-23 Polymérisation de compositions à base de propylène présentant une réponse améliorée à l'hydrogène et procédés associés

Country Status (1)

Country Link
WO (1) WO2025254855A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7183234B2 (en) * 2004-04-29 2007-02-27 Exxonmobil Chemical Patents Inc. Multi-donor catalyst system for the polymerization of olefins
US20120004378A1 (en) * 2009-03-17 2012-01-05 Toho Titanium Co., Ltd Solid catalyst component and catalyst for polymerization of olefins, and process for production of olefin polymers using same
US9206273B2 (en) * 2013-02-27 2015-12-08 Toho Titanium Co., Ltd. Solid catalyst component for polymerizing olefins, catalyst for polymerizing olefins, and production method for polymerized olefins
WO2022015627A2 (fr) 2020-07-17 2022-01-20 Exxonmobil Chemical Patents Inc. Polymères à faibles niveaux de composés organiques volatils et procédés de fabrication de tels polymères

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7183234B2 (en) * 2004-04-29 2007-02-27 Exxonmobil Chemical Patents Inc. Multi-donor catalyst system for the polymerization of olefins
US20120004378A1 (en) * 2009-03-17 2012-01-05 Toho Titanium Co., Ltd Solid catalyst component and catalyst for polymerization of olefins, and process for production of olefin polymers using same
US9206273B2 (en) * 2013-02-27 2015-12-08 Toho Titanium Co., Ltd. Solid catalyst component for polymerizing olefins, catalyst for polymerizing olefins, and production method for polymerized olefins
WO2022015627A2 (fr) 2020-07-17 2022-01-20 Exxonmobil Chemical Patents Inc. Polymères à faibles niveaux de composés organiques volatils et procédés de fabrication de tels polymères

Similar Documents

Publication Publication Date Title
EP2824142B1 (fr) Copolymère hétérophasique
US6306996B1 (en) Polybutene-1 (co)polymers and process for their preparation
EP1608703B1 (fr) Compositions de polyolefine resistantes aux chocs
EP2611862B1 (fr) Polypropylène hétérophasique doté d'une fluidité élevée et de propriétés mécaniques améliorées
US7329714B2 (en) Method of polymerizing propylene comprising olefin pre-polymerization step
EP1620505B1 (fr) Composition de resine en polypropylene
US6998458B2 (en) Butene-1 (co)polymers and process for their preparation
EP2638080B1 (fr) Procédé perfectionné pour la polymérisation de propylène
US9079988B2 (en) Preparation of propylene copolymer with dynamically operated reactor
US20120130027A1 (en) Caps and closures
CZ211090A3 (en) Polypropylene composition and process for preparing thereof
EP2164899A1 (fr) Composition de polyoléfine hétérophasique
KR101990665B1 (ko) 비균질계 지글러-나타 촉매 시스템 및 이를 이용한 올레핀 중합 공정
EP3201245B1 (fr) Processus de polymérisation de polyéthylène à fort poids moléculaire
RU2563652C2 (ru) Пропиленовые полимерные композиции
CN101115797B (zh) 用于注塑的丙烯聚合物组合物
AU2006239428A1 (en) Alpha-olefin homo- or copolymer compositions
KR20230076571A (ko) 성형성이 우수한 사출 연신 블로우 성형용 폴리프로필렌 수지 조성물
EP2360192A1 (fr) Bouchons et fermetures
WO2025254855A1 (fr) Polymérisation de compositions à base de propylène présentant une réponse améliorée à l'hydrogène et procédés associés
KR20200115742A (ko) 폴리올레핀 중합용 촉매 조성물, 그의 제조방법 및 이를 이용한 폴리올레핀의 제조방법
JP2733060B2 (ja) プロピレン共重合体組成物
EP4524165A1 (fr) Catalyseur solide pour la production de polypropylène et procédé de production de copolymère séquencé
KR101715924B1 (ko) 폴리올레핀 중합용 촉매의 제조방법 및 이를 이용한 폴리올레핀의 제조방법
WO2025043057A1 (fr) Composant de catalyseurs et procédé de production de polypropylène ayant un débit de fusion élevé avec une isotacticité élevée

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25733283

Country of ref document: EP

Kind code of ref document: A1