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1.发明授权公开(公告)号：US11292882B2
公开(公告)日：2022-04-05
申请号：US16360172
申请日：2019-03-21
发明人： Christian Ohm , Dominik Schreiber
IPC分类号： C08J3/075 , C08K5/01 , C08K5/05 , C08K5/10 , C08K5/00 , B01D11/04 , B29C48/00 , C08K3/28 , C08L23/06 , C08K3/22 , C08K3/34 , C08K3/26 , C08K5/06 , C08L91/00 , B29K105/00 , B29K23/00
摘要： A polymer composition for producing gel extruded articles is described. The polymer composition contains polyethylene particles combined with a plasticizer and an acid scavenger. In accordance with the present disclosure, the acid scavenger is an inorganic compound that is insoluble in the plasticizer and/or any extractions solvents used during the process. In one embodiment, the acid scavenger is a magnesium aluminum hydroxide carbonate.
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公开(公告)号：US11015031B2
公开(公告)日：2021-05-25
申请号：US16007567
申请日：2018-06-13
发明人： Kirsten Markgraf
摘要： The present disclosure is generally directed to a fiber reinforced polyoxymethylene polymer composition having extremely low formaldehyde emission characteristics. The polymer composition generally contains reinforcing fibers in an amount from 3% to 70% by weight. The reinforcing fibers are combined with a polyoxymethylene polymer having a relatively high melt volume flow rate. The polymer composition can also contain a coupling agent for better integrating the reinforcing fibers into the polymer matrix. In addition to low emission properties, the polymer composition of the present disclosure displays excellent mechanical properties.
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公开(公告)号：US10829467B2
公开(公告)日：2020-11-10
申请号：US16368141
申请日：2019-03-28
IPC分类号： C07D323/06 , B01J8/02 , B01D3/00
摘要： A process for producing a cyclic acetal is disclosed. According to the process, a formaldehyde source is combined with an aprotic compound and contacted with a heterogeneous catalyst which causes the formaldehyde source to convert into a cyclic acetal such as trioxane. The catalyst, for instance, may comprise a solid catalyst such as an ion exchange resin. In one embodiment, the process is used for converting anhydrous formaldehyde gas to trioxane. The anhydrous formaldehyde gas may be produced form an aqueous formaldehyde solution by an extractive distillation. The aprotic compound and the formaldehyde solution may be extracted from the reaction product and recycled into the process.
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公开(公告)号：US10030208B2
公开(公告)日：2018-07-24
申请号：US14511891
申请日：2014-10-10
申请人： Ticona GmbH
发明人： Qamer Zia , Oliver Juenger , Jos Bastiaens , Kirsten Markgraf
IPC分类号： C10M155/02 , C10M125/26 , C08L59/04 , C08L61/00 , C08G16/02 , C08L59/00 , C08K3/38
摘要： A tribologically modified polyoxymethylene polymer composition is disclosed. The polyoxymethylene polymer composition is comprised of a polyoxymethylene polymer and at least one tribological modifier. The tribological modifier may comprise at least one tribological modifier comprising an ultra-high molecular weight silicone having a kinematic viscosity of greater than 100,000 mm2s−1. The composition may exhibit a dynamic coefficient of friction against a counter-material of from about 0.01 to about 0.15. The polyoxymethylene polymer compositions provide polymer articles with improved tribological properties and mechanical properties.
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公开(公告)号：US20230055930A1
公开(公告)日：2023-02-23
申请号：US17960944
申请日：2022-10-06
发明人： Kirsten Markgraf , Joachim Floeck
摘要： 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.
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公开(公告)号：US11384238B2
公开(公告)日：2022-07-12
申请号：US16270780
申请日：2019-02-08
发明人： Dirk Zierer , Patrick Nickolay , Tim Feuerstack
摘要： A polymer composition is described well suited for being combined with relatively short fibers. The fibers, for instance, can have a mean fiber length of less than 1,000 microns, such as less than 700 microns, such as less than 500 microns. The polymer formulation allows for intimate mixing with the fibers without having to use a sizing agent. In one embodiment, the composition contains a polybutylene terephthalate polymer combined with a thermoplastic polymer having lower crystallinity.
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公开(公告)号：US20220135751A1
公开(公告)日：2022-05-05
申请号：US17575990
申请日：2022-01-14
发明人： Qamer Zia , Kirsten Markgraf , Dirk Zierer
摘要： A fiber reinforced polyester polymer composition is disclosed that contains at least one tribological modifier. The tribological modifier may comprise an ultra-high molecular weight silicone alone or in combination with polyytetrafluoroethylene particles. The composition not only has excellent tensile properties but also can produce a low friction surface.
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8.发明申请公开(公告)号：US20210108056A1
公开(公告)日：2021-04-15
申请号：US17129266
申请日：2020-12-21
摘要： A polymer composition for producing gel extruded articles is described. The polymer composition contains polyethylene particles combined with a plasticizer. The polyethylene particles are particularly selected so that the particles rapidly form a homogeneous gel-like material when combined with the plasticizer during gel processing. In one embodiment, the polyethylene used to produce the particles has a relatively low bulk density. Alternatively or in addition, the particles can have a carefully controlled particle size distribution. Polymer articles such as fibers and films can be produced having little to no imperfections.
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公开(公告)号：US10933593B2
公开(公告)日：2021-03-02
申请号：US16117688
申请日：2018-08-30
IPC分类号： B29C67/20 , C08J9/24 , C02F1/00 , B01D69/02 , C02F3/20 , C08J9/00 , B01D39/16 , B01D67/00 , B43K1/00 , B01D71/26 , B29C67/04 , C08F210/02 , C08L23/06 , C02F103/10 , C02F101/32 , C02F103/44 , C02F103/02 , B29L31/14 , B29L31/00
摘要： Polymer compositions containing polyethylene particles having a multi-modal molecular weight distribution are disclosed. The polymer compositions are well suited to producing porous substrates through a sintering process. Formulations made according to the present disclosure can produce porous substrates having improved flexibility demonstrated by an increased flexural strength while still retaining excellent pressure drop characteristics.
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公开(公告)号：US09663678B2
公开(公告)日：2017-05-30
申请号：US14408183
申请日：2012-08-10
申请人： Alistair Mclennan , Linlin Miao
发明人： Alistair Mclennan , Linlin Miao
IPC分类号： C09D131/04 , C09D7/12 , C09D5/02
CPC分类号： C09D131/04 , C08L2205/025 , C08L2205/03 , C09D5/027 , C09D7/65 , C08L29/04
摘要： A coating composition comprises an emulsion copolymer of a monomer mixture comprising at least one vinyl ester, ethylene, and a stabilizing system. The stabilizing system comprises at least one polyvinyl alcohol. The monomer mixture comprises from 60 to 82 wt % of the at least one vinyl ester and from 18 to 40 wt % of the ethylene based on the total weight of monomers in the mixture. The stabilizing system comprises from 1 to 5 wt % of at least one medium molecular weight polyvinyl alcohol and at least one low molecular weight polyvinyl alcohol. The emulsion copolymer has a solids content from 50% to 60% and a viscosity ranges from 500 to 6,000 mPa·s. and a formaldehyde content of less than 10 ppm as determined by HPLC.
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