公开(公告)号：US20250026874A1

公开(公告)日：2025-01-23

申请号：US18715177

申请日：2022-11-02

Applicant: Wacker Chemie AG

Inventor： Hans-Peter Weitzel ,  Stefan Baueregger

IPC: C08F218/08 ,  C08F220/14 ,  C08F220/18 ,  C08F255/02 ,  C09D5/02 ,  C09D131/04 ,  C09D133/08 ,  C09D133/12

Abstract: A process for preparing multistage copolymers in the form of aqueous dispersions by multistage, radically initiated emulsion polymerization includes a first stage, second stage, and third stage. In the first stage, 20% to 75% by weight of vinyl acetate, optionally ethylene and optionally one or more further ethylenically unsaturated monomers are polymerized. In the second stage, in the presence of the polymer from the first stage, 1% to 25% by weight of vinyl acetate, 0.01% to 2% by weight of one or more ethylenically unsaturated silicon-functional monomers and optionally one or more further ethylenically unsaturated monomers are polymerized. In the third stage, in the presence of the polymer from the second stage, 5% to 40% by weight of one or more monomers selected from the group encompassing esters of acrylic acid, esters of methacrylic acid and vinyl aromatics and optionally one or more further ethylenically unsaturated monomers are polymerized.

公开(公告)号：US12168707B2

公开(公告)日：2024-12-17

申请号：US17269608

申请日：2019-08-27

Applicant: NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  DAIKIN INDUSTRIES, LTD.

Inventor： Tsuyoshi Ando ,  Kayo Terada ,  Nobuo Murase ,  Shota Shibutani ,  Yoshito Tanaka ,  Takuma Kawabe ,  Ikuo Yamamoto

IPC: C08F265/02 ,  C08F255/02 ,  C08F265/06 ,  C09K3/18 ,  D01F11/08

Abstract: A water- and oil-repellent agent for fibers containing a bottle brush polymer having a structure represented by the following formula (1), wherein R1 is H or CH3; R2 is a divalent organic group; R3 is a polymer chain having a structure represented by the following formula (2) (wherein R4 is H or CH3; R5 is a C16-C40 monovalent hydrocarbon group; and n is an integer of 10 to 1000); and m is an integer of 10 to 5000:

公开(公告)号：US20240392043A1

公开(公告)日：2024-11-28

申请号：US18694621

申请日：2022-09-15

Applicant: BOREALIS AG

Inventor： Pauli Leskinen ,  Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Antonina Kupareva

IPC: C08F2/01 ,  C08F2/14 ,  C08F2/34 ,  C08F4/659 ,  C08F4/6592 ,  C08F255/02

Abstract: Process for the production of a polypropylene random copolymer (PP), the process comprising the steps of polymerising in a first reactor (R1) propylene and a comonomer (C1a) selected from a C4 to C8 α-olefin in the presence of a first metallocene catalyst (MC1) yielding a first polypropylene copolymer (PP1), wherein the ratio of the feed of the comonomer (C1a) to the feed of propylene is in the range of 1 to 100 mol/kmol and the MFR2 of the first polypropylene copolymer (PP1) is in the range of 0.01 to 100 g/10 min; transferring the first polypropylene copolymer (PP1) to a second reactor (R2); polymerising in the second reactor (R2) and in the presence of said first polypropylene (PP1), propylene, a comonomer (C1b) selected from a C4 to C8 α-olefin, and a second metallocene catalyst (MC2) yielding a second polypropylene copolymer (PP2), wherein the ratio of the feed of the comonomer (C1b) to the feed of propylene is in the range of 40 to 150 mol/kmol and the MFR2 of the second polypropylene copolymer (PP2) is in the range of 0.01 to 100 g/10 min; withdrawing the polypropylene random copolymer (PP) comprising the first polypropylene copolymer (PP1) and the second polypropylene copolymer (PP2) from the second reactor (R2); wherein the first metallocene catalyst (MC1) and/or the second metallocene catalyst (MC2) is a metallocene catalyst (MC) comprising a metallocene complex, and wherein the metallocene catalyst (MC) comprises a support comprising silica.

公开(公告)号：US20240263058A1

公开(公告)日：2024-08-08

申请号：US18571619

申请日：2022-06-13

Applicant: Clariant International Ltd

Inventor： Jeremia SCHWABE ,  Eric HAUCK

IPC: C09J151/06 ,  C08F210/06 ,  C08F255/02 ,  C09J5/06 ,  C09J123/12

CPC classification number: C09J151/06 ,  C08F210/06 ,  C08F255/02 ,  C09J5/06 ,  C09J123/12 ,  C09J2451/00

Abstract: Disclosed herein is a silane-modified polypropylene copolymer having a silicon content of 1% to 5% by weight, an enthalpy of fusion of 20 J/g to 35 J/g, and a melt viscosity at 170° C. of 500 MPas to 4500 MPas, and a process for preparing the same. Further disclosed is a reactive hot-melt adhesive formulation that includes the silane-modified polypropylene copolymer and a process for the adhesive bonding of substrates.

公开(公告)号：US20240228685A1

公开(公告)日：2024-07-11

申请号：US18559450

申请日：2022-05-12

Applicant: BOREALIS AG

Inventor： Norbert REICHELT

IPC: C08F255/02 ,  C08J3/20 ,  C08J3/28 ,  C08K5/09

CPC classification number: C08F255/02 ,  C08J3/203 ,  C08J3/28 ,  C08K5/09 ,  C08J2351/06

Abstract: The present invention is related to a high melt strength polypropylene (HMS-PP) comprising units derivable from at least one polyunsaturated fatty acid, a process for preparing said high melt strength polypropylene (HMS-PP), as well as an article comprising said high melt strength polypropylene (HMS-PP).

公开(公告)号：US20240209133A1

公开(公告)日：2024-06-27

申请号：US18556107

申请日：2021-06-30

Applicant: Dow Global Technologies LLC

Inventor： Chao He ,  Hongyu Chen ,  Wanfu Ma ,  Wuye Ouyang ,  Jozef J.I. Van Dun ,  Allan Walter Mclennaghan

IPC: C08F255/02

CPC classification number: C08F255/02 ,  C08F2810/20

Abstract: A process to form a composition comprising a crosslinked olefin-based polymer derived from an anhydride-functionalized olefin-based polymer, said process comprising at least the following steps A) and B): A) mixing together at least the following components a and b to form a first composition: a) the anhydride-functionalized olefin-based polymer, and b) at least one epoxy-silane compound; B) exposing the first composition to moisture to form the crosslinked olefin-based polymer. The first compositions and crosslinked compositions are also disclosed.

公开(公告)号：US20230257492A1

公开(公告)日：2023-08-17

申请号：US18005170

申请日：2021-04-19

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Tomohiro OKEDA ,  Takato TAKENAKA ,  Isamu ONO ,  Minoru YADA ,  Hiroko IWAKIRI

IPC: C08F20/18 ,  C08F8/46 ,  C09D151/06 ,  C08F255/02 ,  C09D11/106

CPC classification number: C08F20/18 ,  C08F8/46 ,  C09D151/06 ,  C08F255/02 ,  C09D11/106 ,  B32B15/20

Abstract: An object of the present invention is to provide a modified polyolefin resin composition having a high polyethylene content and exhibiting a good balance between a low-temperature stability and an adhesion to a polyethylene substrate and a metal. The present invention provides a modified polyolefin resin that is a graft-modified product in which a component (A) that is a polyolefin resin having an ethylene structural unit content of 50% or more by mole is modified with a component (B) that is an α,β-unsaturated carboxylic acid or an anhydride thereof and a component (C) that is a (meth)acrylate ester represented by the following general formula (I), and an extrapolated melting end temperature (Tem) of the modified polyolefin resin measured in accordance with JIS K7121-1987 using a differential scanning calorimeter at a temperature raising rate of 10° C./minute is 58° C. or lower.

公开(公告)号：US11673985B2

公开(公告)日：2023-06-13

申请号：US16766116

申请日：2019-09-03

Applicant: LG Chem, Ltd.

Inventor： Bi-Oh Ryu ,  Won-Sik Bae ,  Joo-Sung Lee ,  A-Young Lee

IPC: C08F255/02 ,  C08J9/28 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/406 ,  H01M50/417 ,  H01M50/489

CPC classification number: C08F255/02 ,  C08J9/28 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/406 ,  H01M50/417 ,  H01M50/489 ,  C08F2810/20 ,  C08J2201/042 ,  C08J2351/06

Abstract: A method for manufacturing a crosslinked polyolefin separator and the crosslinked polyolefin separator obtained by the method are provided. The method includes (S1) mixing polyolefin, a diluting agent, an initiator and alkoxysilane containing a carbon-carbon double bonded group to an extruder, and then carrying out extrusion to obtain a silane-grafted polyolefin composition; (S2) molding and orienting the extruded silane-grafted polyolefin composition in the form of a sheet; (S3) introducing the oriented sheet to an extraction water bath containing a crosslinking catalyst to extract the diluting agent and perform aqueous crosslinking; and (S4) thermally fixing a resultant aqueous crosslinked product. The method can provide a separator having a high meltdown temperature and improved heat shrinkage.

公开(公告)号：US11421064B2

公开(公告)日：2022-08-23

申请号：US17051234

申请日：2019-04-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Franciscus Petrus Hermanus Schreurs ,  Jan Nicolaas Eddy Duchateau

IPC: C08F10/02 ,  C08F255/02 ,  C08F8/46 ,  B29C48/00 ,  C08F222/06 ,  C08K5/14 ,  C08L23/06

Abstract: The present invention relates to a process for the production of modified polyethylene comprising adding a free radical initiator composition and a polar monomer in extrusion of polyethylene materials with a melt mass flow rate (MFR) as determined in accordance with ISO 1133-1 (2011) at 190° C. under a load of 2.16 kg of between 0.5 and 75 g/10 min characterized in that the free radical initiator composition is added in quantities between 0.01 wt % to 5 wt % compared to the total weight of the polyethylene material wherein the extrusion is performed at a temperature between 230° C. and 350° C. Such process allows for the production of modified polyethylenes, such as having an amount of grafted polar monomer, such as maleic anhydride, of >3 wt %, with low amount of free, unreacted monomer whilst maintaining or not significantly modifying melt properties such as melt mass flow rate.

公开(公告)号：US11414540B2

公开(公告)日：2022-08-16

申请号：US16767741

申请日：2018-12-04

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Liang Chen ,  Carlos A. Cruz ,  Yannick Saint-Gerard ,  Jessica Ye Huang ,  Matthew J. Crimmins ,  Douglas J. Hasso

IPC: C08L69/00 ,  C08L55/02 ,  C08L51/06 ,  C08F255/02 ,  C08F255/06

Abstract: Provided is a method of modifying a blend of polycarbonate and acrylonitrile/butadiene/styrene copolymer comprising adding composite particles to the blend, wherein the composite particles comprise (I) a partially crosslinked polyolefin core and (II) a full or partial shell comprising polymerized units of one or more vinyl monomer, and the resulting modified blend.