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WO/2021/260562A1 |
The invention relates to a method for synthesising macromolecules made up of units U that are mostly monosaccharides or monosaccharide derivatives, by successive elongation of a first unit U1 attached by a covalent bond to an anchor mole...
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WO/2021/260664A1 |
The present disclosure relates to a Ziegler-Natta catalyst system comprising a pro-catalyst, a co-catalyst and a selectivity control agent. The pro-catalyst comprises a magnesium compound, a titanium compound and a multi-dentate internal...
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WO/2021/254972A1 |
The present invention relates to a method for preparing a catalyst, and in particular provides a method for preparing a catalyst suitable for the polymerisation of ethylene and/or propylene, said catalyst comprising a compound of yttrium...
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WO/2021/253312A1 |
An enhanced reaction system and method for preparing polypropylene by means of a slurry process. The enhanced reaction system comprises: a prepolymerization reactor (10) and a polymerization reactor (20), which are connected in order. Th...
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WO/2021/253310A1 |
Disclosed are a micro-interface strengthening reaction system and method for preparing poly-α-olefin. The system comprises a first polymerization reactor (11) and a second polymerization reactor (12), which are sequentially connected, w...
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WO/2021/253311A1 |
Disclosed are a micro-interface strengthened reaction system and a method for preparing polyethylene by means of a solution method. The system comprises: a pre-polymerization reactor (10) and a polymerization reactor (20) connected in se...
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WO/2021/250054A1 |
It is provided a process for producing an ethylene copolymer comprising compressing ethylene monomer at a certain pressure; adding a fresh comonomer in liquid form and, optionallly, a fresh modifier in liquid form at a certain pressure t...
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WO/2021/246338A1 |
A polypropylene-based resin composition characterized by containing 2-30 mass% of a polypropylene resin (X1) having specific characteristics, 5-98 mass% of a polypropylene resin (X2) having specific characteristics, and 0-80 mass% of a p...
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WO/2021/243936A1 |
Disclosed are a sphere-like super-macroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process. A sphere-like super-macroporous material has a two-dimensional hexagonal or...
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WO/2021/240955A1 |
The present invention provides a method for producing a catalyst for olefin polymerization, said catalyst exhibiting excellent catalytic activity during the polymerization of olefins by being suppressed in decrease of polymerization acti...
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WO/2021/241411A1 |
A polyethylene powder which satisfies requirements 1 and 2. (Requirement 1) The viscosity change rate of a gel as measured under the viscosity change rate measurement conditions described below is from -0.8 Pas/°C to 0.0 Pas/°C, said g...
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WO/2021/220645A1 |
Provided is a solid catalyst component for olefin polymerization that makes it possible to satisfy practically satisfactory standards regarding the stereoregularity and the molecular weight distribution range of an obtained polymer, copo...
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WO/2021/218182A1 |
Disclosed are a device and a method for postprocessing a polyolefin powder. The device for postprocessing comprises a steamer and a drier, wherein a discharge port of the steamer is connected to the drier, the steamer is a cylinder body ...
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WO/2021/218913A1 |
The present invention relates to olefin polymerization catalysts, and disclosed are a catalyst component for olefin polymerization or copolymerization and a preparation method therefor, and a catalyst and an application thereof. The cata...
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WO/2021/221988A1 |
Ziegler-Natta (pro)catalyst systems made with an external electron donor compound, methods of synthesis of same, methods of olefin polymerization using same, and polyolefin polymers made thereby. The external electron donor compound is a...
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WO/2021/220644A1 |
Provided is a solid catalytic component that is for olefin polymerization and that, when used in olefin polymerization, allows easy formulation of an olefin polymer in which reduction in polymerization activity per unit time is suitably ...
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WO/2021/213836A1 |
The present invention relates to a compound according to formula 1: wherein:• each of R1 to R12 may individually be a moiety selected from hydrogen, an aryl moiety, an aryl moiety, a halogen, an alkyl or aryl moiety with halogen substi...
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WO/2021/214612A1 |
Provided in this disclosure are zirconium and hafnium complexes that contain 1) a cyclopentadienyl ligand; 2) an adamantyl-phosphinimine ligand; and 3) at least one other ligand. The use of such a complex, in combination with an activato...
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WO/2021/211523A1 |
A polyethylene composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content polyethylene or by deducting from a recycle inventory a recycle content value applied to a polyethyle...
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WO/2021/209698A1 |
The invention relates to a two-component composition comprising a first portion (A) comprising a borane BH3-amine complex and an alkene compound, and a second portion (B) comprising at least one radically polymerizable compound comprisin...
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WO/2021/211527A1 |
A polypropylene composition having a recycle content value is obtained by reacting a recycle content feedstock to make a recycle content polypropylene or by deducting from a recycle inventory a recycle content value applied to a polyprop...
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WO/2021/206941A1 |
A low-density polyethylene having a melt strength measured at 190 C that is greater than or equal to 5.5 cN, a density that is greater than or equal to 0.9210 g/cm3 and less than or equal to 0.9275 g/cm3, and, and a melt index I2 measure...
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WO/2021/197769A1 |
The present invention relates to a thermoplastic material, wherein the thermoplastic material comprises ethylene-based polymer material, wherein the ethylene-based polymer material has a Vicat softening temperature of ≥ 50°C as determ...
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WO/2021/200991A1 |
According to the present invention, an ethylene resin composition which satisfies the requirements (1) to (4) as a material for packaging materials and the like enables the achievement of a film that has an excellent balance between the ...
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WO/2021/193027A1 |
A pipe (10) includes a polyethylene-based resin layer (21) which comprises a polyethylene-based resin composition as a main component. The polyethylene-based resin layer (21) forms a pipeline-material inner surface (10a). The polyethylen...
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WO/2021/193813A1 |
A polypropylene composition including: as a component (A), a propylene (co)polymer that includes 0-2 wt% of a comonomer-derived unit selected from the group consisting of ethylene, a C4-C10-α-olefin, and a combination of these; and as a...
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WO/2021/193650A1 |
Provided are: a catalyst that is for olefin polymerization and that has a high catalytic activity (polymerization activity); a production method for the catalyst for olefin polymerization; and a production method for an olefin polymer us...
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WO/2021/194831A1 |
The alkylation of transition metal coordination catalyst complexes (such as metallocenes and/or post-metallocenes) in non-polar solvents with high conversion to the di alkylated transition metal coordination catalyst complex may be accom...
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WO/2021/188733A1 |
The present disclosure provides Lazarev reactor that sustains reaction of two dimensional polymerization on the interface of two immiscible solutions A and B carrying components of reaction to the interface where reaction takes place and...
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WO/2021/182439A1 |
The purpose of the present invention is to provide: a borate compound-containing composition which is useful as a promoter for polymerization of olefins or dienes and which is soluble in a hydrocarbon solvent; and a manufacturing method ...
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WO/2021/182438A1 |
The purpose of the present invention is to provide a composition containing a borate compound which is useful as a cocatalyst for the solution polymerization of olefin or diene and is soluble in a hydrocarbon solvent. According to the ...
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WO/2021/183867A1 |
The present disclosure provides compositions and methods for degrading polyethylene. The compositions utilized in the present disclosure may contain microbes from the genus Pseudomonas and/or various enzymes, which when brought into cont...
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WO/2021/173148A1 |
A composition, such as a catalyst precursor or a catalyst comprising a Cr coated silica support with particularly defined levels of Na and Al, such that the resulting Cr/Silica catalyst has an increased MI potential is disclosed. In an e...
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WO/2021/173362A1 |
The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization. In at least...
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WO/2021/173361A1 |
Metallocene complexes represented by structure (I) are useful for alpha olefin oligomerization in the presence of an activator to generate polyalphaolefins having a high percentage of vinylidene termination and relatively low Mn values. ...
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WO/2021/168023A1 |
Disclosed are metallocene compounds, catalyst compositions comprising a metallocene compound, processes for polymerizing olefins, methods for making catalyst compositions, olefin polymers and articles made from olefin polymers. In an asp...
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WO/2021/151632A1 |
The present invention relates to a process for reducing low molecular weight oligomers and wax build-up in one or more recycle coolers in a high pressure polymerization process by means of a gas stream, which is heated and/or free of wax...
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WO/2021/155331A1 |
The present invention provides a compound comprising a moiety of the formula: (I) where said moiety of formula I is a radical, a cation, or a radical dication; Y1, Y2, Y3, R1a, R1b, R1c, R1d, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d ar...
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WO/2021/154472A1 |
A polymerization process may include: polymerizing a monomer having 4 or less carbons and a comonomer having 6 or more carbons in the presence of an inert isomer/saturate of the comonomer to yield a product stream comprising a polymer, u...
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WO/2021/146448A1 |
The invention relates to diacyl derivatives of certain polyether polymers, compositions comprising the same, and methods of making the same via reaction with substituted or unsubstituted cyclic anhydrides, and methods of using the same.
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WO/2021/138657A1 |
A system and method for producing 1-butene and ultra-high-molecular-weight polyethylene (UHMWPE), including feeding a catalyst, an antifouling co-catalyst, and ethylene to a reactor, and dimerizing ethylene into 1-butene and polymerizing...
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WO/2021/129432A1 |
Provided is a propylene polymerization method, comprising the following steps: 1) performing a pre-polymerization reaction: mixing and stirring a catalyst and liquid-phase propylene cooled to 5-10°C in a pre-polymerization reaction zone...
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WO/2021/122140A1 |
The invention relates to a gas/liquid oligomerization reactor having successive zones with variable diameters. The invention also relates to a process for the oligomerization of ethylene using a gas/liquid oligomerization reactor having ...
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WO/2021/126692A1 |
The present disclosure related to iron-containing compounds including a 2,6-diiminoaryl ligand and one or more substituted hydrocarbyl substituents. Catalysts, catalyst systems, and processes of the present disclosure can provide polyole...
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WO/2021/118751A2 |
Methods for producing a polymer include contacting at least one monomer under polymerization conditions with a fluidized bed of a polymerization catalyst on a particulate support; measuring a plurality of pressures of the fluidized bed a...
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WO/2021/119089A1 |
The present disclosure provides methods and systems for introducing an activator to a polymerization reactor. The methods may include introducing liquid activator to a mixing vessel or an inline mixer and mixing aliphatic hydrocarbon sol...
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WO/2021/119042A2 |
Disclosed are a method and system for propylene polymerization utilizing a loop slurry reactor. The method can include polymerizing propylene in a loop slurry reactor under bulk polymerization conditions to produce polypropylene. The pro...
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WO/2021/115908A1 |
The invention relates to a gas phase reactor (1), that comprises a gas distribution plate (11) arranged inside the gas phase reactor; a first outlet (12) for continuously withdrawing a first product stream, the first outlet (12) being ar...
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WO/2021/113951A1 |
Polymers are created via the depolymerization of a polypropylene feedstock. The polymers can be modified/grafted with maleic anhydride. In some embodiments the polypropylene feedstock contains recycled or discarded polypropylene. In some...
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WO/2021/118145A1 |
The present invention relates to a method for preparing an olefin-based polymer by gas-phase polymerization. Specifically, the present invention relates to a method for preparing an olefin-based polymer by gas-phase polymerization of ole...
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