-
公开(公告)号：US20230257505A1
公开(公告)日：2023-08-17
申请号：US18005531
申请日：2021-06-22
发明人： Chantelle Duckworth , Don Thomas , Jack Atkin , Jason Bell , John Grasmeder , Nigel Slater , Oliver Carrdus , Samuel Lowe , Stuart Fenton , William Greene , Adam Chaplin
CPC分类号： C08G8/02 , B33Y70/00 , B29C64/153
摘要： This invention relates to copolymers which consist essentially of [-ether-phenyl-ether-phenyl-carbonyl-phenyl-]and [ether-phenyl-phenyl-ether-phenyl-carbonyl-phenyl-] repeat units, as well as end units, which have reduced melting temperature (Tm) compared to prior art copolymers including such repeat units. The copolymers of the invention exhibit crystallinity and have similar glass transition temperatures to the prior art polymers.
-
公开(公告)号：US20210009758A1
公开(公告)日：2021-01-14
申请号：US17041685
申请日：2018-03-28
发明人： Adam CHAPLIN , Don THOMAS , Ulutan TAHSIN , Martin RILEY
IPC分类号： C08G65/40
摘要： A method for manufacture of PEEK-PEDEK copolymers is disclosed along with copolymers formed by the method and their use. The method includes a nucleophilic polycondensation of a mixture of dihydroxybenzene and dihydroxybiphenyl with 4,4′-dihalobenzophenone in a reaction mixture comprising sodium carbonate and potassium carbonate, in an aromatic sulfone solvent, at a reaction temperature rising to a temperature from 280° C. to 330° C. immediately prior to the addition of a reaction-stopping salt, such as LiCI or Li2SO4, to the reaction mixture. Further organic dihalide is subsequently added to the reaction mixture for end-capping of the copolymer. The resulting copolymer has reduced chain branching and reduced melt viscosity at low shear rate compared to prior art copolymer of comparable molecular mass.
-
公开(公告)号：US10767744B2
公开(公告)日：2020-09-08
申请号：US16313718
申请日：2017-06-30
发明人： Roderick Kleiss
摘要： This anti-backlash gear includes a gear wheel and gear teeth. Each gear tooth comprises first and second flanks, a top face and a bottom face, wherein for each gear tooth each flank extends from the top face to the bottom face, wherein the gear teeth comprise a polymeric material which comprises a repeat unit of form I wherein t1, and w1 independently represent 0 or 1 and v1 represents 0, 1 or 2. For each gear tooth, at least one of said flanks comprises two or more surfaces arranged to form a single protrusion extending along the at least one said flank such that a tooth thickness of each gear tooth varies between the top face and the bottom face of said gear tooth in a direction parallel to an axis of rotation of the gearwheel in operation. In use, the single protrusion is elastically deformable so as to absorb backlash.
-
公开(公告)号：US10538622B2
公开(公告)日：2020-01-21
申请号：US15101978
申请日：2014-12-08
摘要： Polyaryletherketones are produced which are end-capped with a phenylethynyl-containing moiety. The end-capped material, having a relatively low molecular weight, may be subjected to a thermal cycle to produce a higher molecular weight material having excellent mechanical properties, a relatively high level of crystallinity and acceptable Tm and Tg
-
公开(公告)号：US10457774B2
公开(公告)日：2019-10-29
申请号：US15555848
申请日：2016-03-29
发明人： Geoff Small , Richard Ainsworth
摘要： An assembly or apparatus for use in relation to an assembly, wherein said assembly is subjected to a temperature of less than −50° C. in use, wherein said assembly or apparatus includes a component which comprises a polymeric material (A) having a repeat unit of formula —O-Ph-O-Ph-CO-Ph- (I) wherein Ph represents a phenylene moiety; and wherein said polymeric material (A) has a melt viscosity of at least 0.50 kNsm−2.
-
公开(公告)号：US10107421B2
公开(公告)日：2018-10-23
申请号：US13983598
申请日：2012-02-07
申请人： Alan Wood , Horst Sandner
发明人： Alan Wood , Horst Sandner
IPC分类号： F16L9/12 , B29C71/00 , C08J5/00 , F16L11/06 , E21B17/01 , B29C47/00 , B29C47/90 , B29C71/02 , B29K71/00 , B29C47/88
摘要： A polyetheretherketone pipe of length greater than 250 meters and a residual stress of less than 5 MPa may be made using a calibrator device (2) which includes a cone shaped opening (6) arranged to receive a molten extruded pipe shaped polymer. Attached to the front member (4) is a vacuum plate (14a) and successive vacuum plates (14b-14h) are attached to one another to define an array of vacuum plates, the vacuum plates being arranged to allow a vacuum to be applied to a pipe precursor passing through opening (16). The vacuum plates (14) also include (10) temperature control means for heating or cooling the plates and therefore heating or cooling a pipe precursor passing through the openings. With a vacuum applied to opening (6, 16) and heating/cooling the plates, an extruded hot plastics pipe is inserted into calibrator (2) via opening (6) and conveyed through opening (16) in plates (14), whereupon it is urged by the vacuum against the cylindrical surface defined by plates (14) to maintain its shape and the (15) temperature of each plate is controlled to control the rate of cooling of the pipe precursor passing through. The pipe may be cooled at a relatively slow rate so that a pipe made from a relatively fast crystallizing polymer crystallizes and the crystallinity of the pipe along its extent and throughout its thickness is substantially constant.
-
公开(公告)号：US20180282542A1
公开(公告)日：2018-10-04
申请号：US15762336
申请日：2016-09-26
发明人： ADAM CHAPLIN , ULUTAN TAHSIN
摘要： A process for manufacturing an object, the process comprising steps: a) selecting a feedstock material comprising one or more polymeric material selected from i) a polymeric material (A) having a repeat unit of formula I and a repeat unit of formula II wherein Ph represents a phenylene moiety; and/or ii) a polymeric material (B) having a repeat unit of formula III and a repeat unit of formula IV wherein Ph represents a phenylene moiety; each X independently represents an oxygen or suphur atom; n represents an integer of 1 or 2; Y is selected from a phenylene moiety, a Ph-Ph moiety and a naphthalenyl moiety; W is a carbonyl group, an oxygen or sulphur atom, Z is selected from —X-Ph-S02-Ph- —X-Ph-S02-Y-S02-Ph- and —CO-Ph-; b) melting the feedstock material; and c) extruding the feedstock material to form a plurality of parts that define the object.
-
公开(公告)号：US09783636B2
公开(公告)日：2017-10-10
申请号：US14902717
申请日：2014-07-01
CPC分类号： C08G65/4012 , C08G65/40 , C08G2650/40 , C08L71/00
摘要： Polymeric materials for use in challenging situations in the oil and gas industry (e.g. challenging physical and chemical environments) are described. The polymeric materials comprise a polymeric material having a repeat unit of formula I and a repeat unit of formula II wherein Ph represents a phenylene moiety; wherein the repeat units I and II are in the relative molar proportions 95:5 to 80:20.
-
公开(公告)号：US20160208045A1
公开(公告)日：2016-07-21
申请号：US14917029
申请日：2014-09-26
IPC分类号： C08G65/38
CPC分类号： C08G65/38 , C08G65/40 , C08G65/4012 , C08G65/4025 , C08G65/4075 , C08G65/4093 , C08G2650/40
摘要： Polyetheretherketone (PEEK) may be prepared by polycondensation of a single monomer (4-fluoro-4′-(4-hydroxyphenoxy) benzophenone) in diphenylsulphone (DPS) solvent and in the presence of sodium carbonate and potassium carbonate. The process can be used to produce high quality, relatively light coloured polymers having a lower Tm than those produced using a standard PEEK process.
摘要翻译： 聚醚醚酮（PEEK）可以通过单一单体（4-氟-4' - （4-羟基苯氧基）二苯甲酮）在二苯基砜（DPS）溶剂中和在碳酸钠和碳酸钾存在下缩聚来制备。 该方法可用于生产具有比使用标准PEEK方法制备的那些Tm低的Tm的较高质量，较浅的着色聚合物。
-
公开(公告)号：US07906574B2
公开(公告)日：2011-03-15
申请号：US12588344
申请日：2009-10-13
申请人： Craig Meakin , Dianne Flath , Brian Wilson
发明人： Craig Meakin , Dianne Flath , Brian Wilson
CPC分类号： C08G8/02 , C08G8/26 , C08G65/40 , C08L71/10 , Y10T428/1352 , Y10T428/249924
摘要： A polyaryletherketone polymeric material, for example polyetheretherketone and composite materials comprising said polymeric material are described. The polymeric material has a melt viscosity (MV) in the range 0.05 to 0.12 kNsm−2 preferably in the range 0.085 to 0.095 kNsm−2.
摘要翻译： 描述了聚芳醚酮聚合物材料，例如聚醚醚酮和包含所述聚合材料的复合材料。 聚合物材料的熔体粘度（MV）在0.05至0.12kNsm-2的范围内，优选在0.085至0.095kNsm-2的范围内。
-
-
-
-
-
-
-
-
-
搜索结果
83 条记录 (耗时 0.021 秒)
