公开(公告)号：US20240417546A1

公开(公告)日：2024-12-19

申请号：US18816178

申请日：2024-08-27

Applicant: Celanese International Corporation

Inventor： Qamer Zia ,  Kai-Uwe Toennes ,  Kirsten Markgraf

IPC: C08K13/02 ,  C08G2/08 ,  C08K3/34 ,  C08K3/40 ,  C08K5/098 ,  C08K5/103 ,  C08K5/20 ,  C08K7/14 ,  C08L59/02

Abstract: The present disclosure is directed to a polyacetal, or polyoxymethylene (POM), base composition which contains an additive package containing additives suitable for food processing applications. Of particular advantage, POM produced according to the present disclosure may demonstrate low formaldehyde emissions, extractables, or both, when measured by standard methods without containing any formaldehyde scavenger packages.

公开(公告)号：US20240182704A1

公开(公告)日：2024-06-06

申请号：US18511081

申请日：2023-11-16

Applicant: Celanese International Corporation

Inventor： Klaus Kurz ,  Kirsten Markgraf

IPC: C08L59/02

CPC classification number: C08L59/02 ,  C08L2205/025 ,  C08L2207/20

Abstract: The present disclosure is directed to a process for recycling polyoxymethylene polymers and to polymer compositions containing the recycled polyoxymethylene polymers. The recycled polyoxymethylene polymers are combined with one or more virgin polyoxymethylene polymers to produce polymer compositions displaying excellent mechanical properties in combination with a high level of stability.

公开(公告)号：US20230055930A1

公开(公告)日：2023-02-23

申请号：US17960944

申请日：2022-10-06

Applicant: Celanese Sales Germany GmbH

Inventor： Kirsten Markgraf ,  Joachim Floeck

IPC: C08L59/04 ,  E05F15/00 ,  E05D15/16 ,  C08J5/04 ,  C08L59/02 ,  C08J5/24

Abstract: A tribologically modified polyoxymethylene polymer composition is disclosed. The polyoxymethylene polymer composition is comprised of a polyoxymethylene polymer, reinforcing fibers, and at least one tribological modifier. The tribological modifier, in one embodiment, can comprise a graft copolymer. The use of a graft copolymer has been found to unexpectedly and dramatically improve noise generation when tested against various substrates, especially glass substrates.

公开(公告)号：US20220332879A1

公开(公告)日：2022-10-20

申请号：US17856500

申请日：2022-07-01

Applicant: Ticona LLC

Inventor： Sung Hye Kim ,  Rong Luo ,  Jared T. Kindt

IPC: C08G2/08 ,  C08K5/3445 ,  C08K5/3492 ,  C08K5/17 ,  C08L61/02 ,  C08K5/00 ,  C08L59/02 ,  C08L59/04 ,  C08K5/16 ,  C08K5/31

Abstract: A polyoxymethylene polymer composition is disclosed containing a formaldehyde stabilizer package. The formaldehyde stabilizer package, which contains at least two emission control agents, dramatically and unexpectedly reduces formaldehyde emissions. The formaldehyde stabilizer package includes at least two emission control agents selected from the group of benzoguanamine compounds, a hydantoin, a substituted hydantoin, an amino acid, and an alkylene urea such as ethylene urea.

公开(公告)号：US11471287B2

公开(公告)日：2022-10-18

申请号：US17095132

申请日：2020-11-11

Applicant: DEPUY IRELAND UNLIMITED COMPANY

Inventor： Rajendra K. Kasinath ,  Steven P. Griffin ,  Jason B. Langhorn

IPC: A61F2/38 ,  A61F2/30 ,  C08L59/02 ,  C08L79/08 ,  C08L81/06

Abstract: An orthopaedic prosthesis includes a femoral component comprising polymeric materials. The polymeric materials may include a polyaromatic ether or a polyacetal. The orthopaedic prosthesis may include a component having an articular layer and a support layer adjacent the articular layer. The support layer may include a reinforcement fiber. The orthopaedic prosthesis may be a knee prosthesis.

公开(公告)号：US20210253462A1

公开(公告)日：2021-08-19

申请号：US17246737

申请日：2021-05-03

Applicant: SHANGHAI TECHASE ENVIRONMENT PROTECTION CO., LTD.

Inventor： Gangfan SUN ,  Daoguang LIU ,  Wenbiao ZHANG

IPC: C02F9/00 ,  B01D29/64 ,  B01D29/03 ,  B01D29/56 ,  B01D29/35 ,  C08L59/02 ,  B01D29/01 ,  B01D29/46 ,  B01D29/68 ,  B01D29/90 ,  B01D36/02 ,  C02F11/122 ,  C02F11/125 ,  C08J5/00 ,  C08L71/02

Abstract: The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16°-22° to 6°-14°; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a ⅓ position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade. The helical shaft in the present invention is specially designed, so that the pitch is more reasonable, a helical angle is gentler, frictional resistance when sludge passes through the helical shaft may be effectively reduced, and phenomena of shaft blockage and shaft sticking of the sludge may be reduced.

公开(公告)号：US10800919B2

公开(公告)日：2020-10-13

申请号：US15326307

申请日：2015-07-13

Applicant: Vertellus Holdings LLC

Inventor： Ashok M. Adur ,  Prasad Taranekar

IPC: C08L77/02 ,  C08L33/20 ,  C08L59/02 ,  C08L101/00 ,  C08L55/02 ,  C08L67/02 ,  C08L67/04 ,  C08L69/00 ,  C08L75/06

Abstract: The present disclosure relates to novel compositions formed by compounding olefin-maleic anhydride copolymers (OMAP) such as ethylene-maleic anhydride copolymers with polyester (PE), polycarbonate (PC), polyacetal, thermoplastic urethane (TPU) and other engineering plastics.

公开(公告)号：US10450456B2

公开(公告)日：2019-10-22

申请号：US15789203

申请日：2017-10-20

Applicant: E I DU PONT DE NEMOURS AND COMPANY

Inventor： Ramabhadra Ratnagiri

IPC: C08L59/02 ,  C08L59/00 ,  C08L5/00 ,  C08K3/26 ,  C08K3/34

Abstract: Polyoxymethylene compositions, articles comprising these compositions, and processes of making the compositions, comprising: a) at least one polyoxymethylene polymer; b) about 0.1 to about 5 wt. % of poly alpha-1,3-glucan having a d90 particle size of 50 microns or less; c) optionally, at least one additive selected from the group consisting of nucleating agents, waxes, ultraviolet stabilizers, colorants, antioxidants, formaldehyde scavengers, lubricants, and mixtures of these; wherein an article molded from said polyoxymethylene composition exhibits a formaldehyde emission of 1 weight percent or less when measured according to TEF test method.

公开(公告)号：US20190309158A1

公开(公告)日：2019-10-10

申请号：US16301565

申请日：2017-04-12

Applicant: Polyplastics Co., Ltd.

Inventor： Tadahiro HORIGUCHI ,  Sonae KOTANI ,  Kazuki OHI

IPC: C08L59/02 ,  B29C45/00 ,  B60J10/74 ,  B60J1/00

Abstract: A polyacetal resin composition suitable for providing a plate-shaped resin molded article that satisfies all of the following: high flatness, low shrinkage ratio anisotropy (high dimensional stability), high creep resistance, high impact strength, and excellent color stability during residence in the molding machine. The polyacetal resin composition for molding a plate-shaped molded article includes 100 mass parts of a polyacetal resin having a melt index (according to ASTM D1238, 190° C., 2.16 kgf) of 2.0 g/10 min to 4.0 g/10 min; 0.1 mass parts to 2 mass parts of a polyacetal copolymer that is a copolymer of (b1) trioxane, (b2) a compound having two to four cyclic ether units per one molecule, and (b3) a compound having one cyclic ether unit per one molecule, the polyacetal copolymer having a branched or crosslinked structure; and 0.1 mass parts to 1 mass part of a hindered phenol antioxidant.

公开(公告)号：US10224127B2

公开(公告)日：2019-03-05

申请号：US14646875

申请日：2013-11-25

Applicant: ASAHI KASEI CHEMICALS CORPORATION

Inventor： Nozomi Inagaki ,  Takaaki Miyoshi ,  Junichi Tsuzuki

IPC: H01B1/24 ,  C08L59/02 ,  C08L59/04 ,  C08K3/04 ,  C08L63/00 ,  C08K3/08 ,  C08L23/06

Abstract: The resin composition according to the present invention contains a polyacetal resin having a specific molecular weight distribution, a specific carbon black, and an alkaline metal wherein the contents of the carbon black and the alkaline metal are in specific ranges. The molded article according to the present invention contains the resin composition.