公开(公告)号：US20220332861A1

公开(公告)日：2022-10-20

申请号：US17641708

申请日：2020-09-04

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Jaiprakash Brijlal SAINANI ,  Nicolaas Hendrika FRIEDERICHS ,  Alexander VOSKOBOYNIKOV ,  Dmitry UBORSKY ,  Kankan BHAUMIK ,  Vincenzo BUSICO ,  Antonio VITTORIA ,  Roberta CIPULLO ,  Bogdan GUZEEV ,  Oleg SAMSONOV ,  Pavel KULYABIN ,  Georgy GORYUNOV ,  Andrey YASHIN ,  Akhilesh TANWAR

IPC: C08F110/02 ,  C08F4/6592 ,  C08F4/659 ,  C08F210/16

Abstract: The present invention relates to compounds according to formula I, wherein: R1 is a cyclopentadienyl moiety or a moiety comprising a cyclopentadienyl ring structure; R2 is a moiety M(R5)2 or MR5, wherein M is a metal selected from hafnium, titanium or zirconium, and R5 is F, Cl, I, Br or an alkyl-moiety comprising 1 to 10 carbon atoms, preferably methyl, benzyl, butadiene or pentadiene; R3 is H, an alkyl or aryl moiety comprising 1 to 10 carbon atoms, or a moiety comprising N or O and 1 to 15 carbon atoms; R4 is H, an alkyl or aryl moiety comprising 1 to 10 carbon atoms, or a moiety comprising N or O and 1 to 15 carbon atoms, or a halogen; wherein if R3 is H, R4 is a moiety other than H, and if R4 is H, R3 is a moiety other than H; each R6 is individually selected from H, a halogen, an alkyl moiety, an aryl moiety, a halogen-substituted alkyl moiety, a halogen-substitute d aryl moiety, an alkoxy moiety, a siloxy-moiety, or a nitrogen-containing moiety, preferably H. Such compounds may be used in a catalyst system for olefin polymerisation, particularly ethylene copolymerisation, providing at least one of a high catalyst activity, a high comonomer incorporation, and/or a high molecular weight polymer.

公开(公告)号：US20250011575A1

公开(公告)日：2025-01-09

申请号：US18707331

申请日：2022-09-15

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Karel WILSENS ,  Rajesh CHITTA ,  Luke HERINX ,  Kankan BHAUMIK

IPC: C08K5/526 ,  C08J3/20 ,  C08K5/098 ,  C08L23/06

Abstract: a method for stabilising a material composition containing polyethylene includes: i) providing a material composition containing polyethylene; ii) determining the quantity of vinyl unsaturations in the polyethylene; iii) determining the quantity of secondary antioxidant in the material composition; iv) adding a quantity of secondary antioxidant so that the quantity of secondary antioxidant in the polyethylene is as required for a polyethylene having a quantity of vinyl unsaturations as determined under ii) to obtain a modified material composition. The method allows for obtaining a modified material composition that can be used in the production of articles via thermal shaping processes, such as extrusion or injection moulding processes, without excessive increase of long chain braches as a consequence of the shaping process.

公开(公告)号：US20250066592A1

公开(公告)日：2025-02-27

申请号：US18718832

申请日：2022-12-02

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Kankan BHAUMIK ,  Karel WILSENS ,  Ganesh KANNAN

IPC: C08L23/06 ,  C08K5/053 ,  C08L23/08

Abstract: A polyethylene composition includes at least one of (a) a first ethylene-based polymer and (b) a second ethylene-based polymer; and (c) ≥100 and ≤5000 ppm, preferably ≥500 and ≤2500 ppm, of 2,2-bis(hydroxymethyl)-1,2-propanediol, with regard to the total weight of the polyethylene composition. Such composition allows for providing a high oxidation induction temperature in combination with suppressed occurrence of yellowing of a polyethylene, in particular where a post-consumer recycle polyethylene is used in the composition.