公开(公告)号：US20240018692A1

公开(公告)日：2024-01-18

申请号：US18257278

申请日：2021-12-16

申请人： MEDIZINISCHE UNIVERSITÄT WIEN ,  LUDWIG BOLTZMANN GESELLSCHAFT-ÖSTERREICHISCHE VEREINIGUNG ZUR FÖRDERUNG DER WISSENSCHAFTLICHEN

发明人： Christian GRASL ,  Heinrich SCHIMA ,  Helga BERGMEISTER

IPC分类号： D01D5/00 ,  D01F6/62 ,  D01F6/70 ,  A61F2/06

CPC分类号： D01D5/0092 ,  D01D5/003 ,  D01F6/625 ,  D01F6/70 ,  A61F2/06 ,  D10B2331/041 ,  D10B2331/10 ,  D10B2509/06 ,  A61F2240/001

摘要： Device and method for producing an anisotropic fibre framework (10), in particular a stent, by electrospinning, comprising a reservoir (1), a spinneret (2) for dispensing a material jet (8), and an electrically conductive depositing spindle (3) which is rotatable relative to the spinneret (2), wherein at least one, preferably variable, two-pole electrical DC voltage source (4, 4a, 4b) is provided for providing an electrical potential difference between the spinneret (2) and the depositing spindle (3), and wherein a, preferably earthed, housing (7) which at least partially surrounds the depositing spindle (3) and the spinneret (2) is provided, wherein a controlled switching unit (5) is provided, this being designed to isolate the depositing spindle (3) from the DC voltage source (4, 4a, 4b) at least once, preferably several times, during the electrospinning.

公开(公告)号：US20230392295A1

公开(公告)日：2023-12-07

申请号：US18033548

申请日：2021-10-22

申请人： TORAY OPELONTEX CO., LTD

发明人： Hiroshi TAKAYAMA ,  Masashi HARA

IPC分类号： D01F6/70 ,  D01D5/04 ,  D01F1/10

CPC分类号： D01F6/70 ,  D01D5/04 ,  D01F1/10 ,  D10B2331/10 ,  D10B2401/062

摘要： [Problem] An object of the present invention is to provide a polyurethane elastic fiber with excellent textile properties and textile property stability over time by including in the polyurethane elastic fiber a specific polyurethane having in the molecular structure a salt structure in which specific functional groups are ionically bonded to each other, and to provide a method for producing such a polyurethane elastic fiber. Another object of the present invention is to provide a polyurethane elastic fiber that allows for easier inventory control and processing condition management of fibers when used, and that can be used to obtain fabrics with stable fabric properties and fabric quality, and to provide a method for producing such a polyurethane elastic fiber. [Solution] A polyurethane elastic fiber comprising polyurethane A and additive B below. Polyurethane A: A polyurethane using as starting materials a polymer diol, a diisocyanate, and a chain extender, and not having a tertiary amine in the skeleton. Additive B: A polyurethane or polyurea using as starting materials a diol and/or a diamine and a diisocyanate, and having a tertiary amine nitrogen bonded only to a non-aromatic carbon in the skeleton, the tertiary amine nitrogen bonding ionically to a sulfonic acid compound to form a sulfonic acid amine.

公开(公告)号：US20230349075A1

公开(公告)日：2023-11-02

申请号：US18140953

申请日：2023-04-28

申请人： Colorado State University Research Foundation

发明人： Yan Vivian LI ,  Jiayi WEN ,  Saloni PURANDARE

IPC分类号： D01F6/64 ,  D01F6/18 ,  D01F6/70 ,  D01F11/12

CPC分类号： D01F6/64 ,  D01F6/18 ,  D01F6/70 ,  D01F11/127 ,  D10B2403/033

摘要： Embodiments of the present disclosure relate to a denticle array. The denticle array includes a substrate and a plurality of denticles coupled to the substrate. Each denticle of the plurality of denticles includes an upper portion and a lower portion. The upper portion includes an upper body. The lower portion includes a lower body. The upper body includes a first prong extending from a front end of the denticle to a rear end of the denticle, a second prong extending from the front end of the denticle to a rear end of the denticle, and a third prong extending from the front end of the denticle to a rear end of the denticle. A first ridge separates the first prong and second prong. A second ridge separates the first prong from the third prong. The first prong has a length greater than the second prong and the third prong.

公开(公告)号：US11732131B2

公开(公告)日：2023-08-22

申请号：US17885517

申请日：2022-08-10

申请人： NAN YA PLASTICS CORPORATION

发明人： Te-Chao Liao ,  Han-Ching Hsu ,  Chen-Wei Chang

IPC分类号： C08L75/06 ,  D01D5/08 ,  C08G18/42 ,  C08G18/12 ,  C08G18/28 ,  D01F6/70 ,  C08G18/76 ,  D01D1/04 ,  C08K5/3492 ,  C08G18/08 ,  D01F1/10

CPC分类号： C08L75/06 ,  C08G18/0895 ,  C08G18/12 ,  C08G18/2825 ,  C08G18/4202 ,  C08G18/4236 ,  C08G18/4238 ,  C08G18/7671 ,  C08K5/3492 ,  D01D1/04 ,  D01D5/08 ,  D01F6/70 ,  D01F1/10

摘要： A thermoplastic polyurethane resin suitable for melt spinning is formed from a reaction mixture via a polymerization reaction. The reaction mixture includes an isocyanate component and a polyol component. The polyol component includes a first polyol that has a first number average molecular weight and a second polyol that has a second number average molecular weight. The first number average molecular weight is between 1,000 g/mol and 1,500 g/mol, and the second number average molecular weight is between 2,500 g/mol and 3,000 g/mol. One resin component formed by the first polyol via the polymerization reaction is defined as a low melting point segment and correspondingly has a first melting point between 170° C. and 185° C. Another resin component formed by the second polyol via the polymerization reaction is defined as a high melting point segment and correspondingly has a second melting point between 195° C. and 210° C.

公开(公告)号：US20230157905A1

公开(公告)日：2023-05-25

申请号：US17912134

申请日：2021-03-24

申请人： THE LYCRA COMPANY LLC

发明人： Hong LIU ,  Oguzhan CELEBI ,  Nicholas E. KURLAND

IPC分类号： A61F13/49 ,  D01F6/70 ,  A61L15/26 ,  C08G18/10 ,  C08G18/76 ,  C08G18/48 ,  C08G18/32

CPC分类号： A61F13/4902 ,  D01F6/70 ,  A61L15/26 ,  C08G18/10 ,  C08G18/7671 ,  C08G18/4854 ,  C08G18/3228 ,  D10B2401/061 ,  D10B2401/063 ,  D10B2509/02 ,  A61F2013/49022

摘要： Elasticized nonwoven laminates including high recovery power polyurethane elastic fiber, articles of manufacture with these elasticized nonwoven laminates and methods for production of the elasticized laminates and articles of manufacture are provided.

公开(公告)号：US11618979B2

公开(公告)日：2023-04-04

申请号：US17386701

申请日：2021-07-28

申请人： SANKO CO., LTD.

发明人： Akihiko Yoshizato

IPC分类号： D01F6/70 ,  D01D1/02 ,  D01F6/72 ,  D01F6/78 ,  C08K3/013 ,  C08K3/04 ,  C08K3/22 ,  C08K3/36 ,  C08K5/098 ,  C08L75/02 ,  C08L75/04 ,  D01F1/02

摘要： A method for producing a polyurethane elastic fiber according to the present invention contains the steps of: [1] producing a polyurethane urea polymer (A) having a number average molecular weight ranging from 12,000 to 50,000, and represented by general formula (1); [2] preparing a spinning dope by adding the polyurethane urea polymer (A) to a polyurethane urea polymer (B); and [3] spinning a polyurethane elastic fiber using the spinning dope. In the formula, R1 and R2 are an alkyl group or a hydroxyalkyl group, R3 is an alkylene group, a polyethyleneoxy group or a polypropyleneoxy group, R4 is a diisocyanate residue, X is a urethane bond or a urea bond, R5 and R6 are a diisocyanate residue, P is a diol residue, Q is a diamine residue, UT is a urethane bond, UA is a urea bond, each of k, 1, m and n is 0 or a positive number.

公开(公告)号：US20220372694A1

公开(公告)日：2022-11-24

申请号：US17770141

申请日：2020-10-20

申请人： TORAY OPELONTEX CO., LTD

发明人： Katsuya SUZUKI ,  Toshihiro TANAKA ,  Kazuki NAESHIRO ,  Keiichiro OSHIMA ,  Yasunobu ARAKAWA

IPC分类号： D06M15/227 ,  A61L15/26 ,  D06M13/02 ,  D06M15/233 ,  D01F1/10 ,  D06M15/643 ,  D06M13/144 ,  D06M13/188 ,  D01F6/70 ,  D01F11/08 ,  D01D5/04 ,  D01D11/06

摘要： An elastic fiber of the present invention having an elastic fiber treatment agent attached to the fiber surface, comprises: a hydrocarbon resin (A) having a structure in which a polymer including a structural unit whose monomer is at least one selected from aromatic olefins and aliphatic diolefins as the main structural unit is partially or fully hydrogenated; and a hydrocarbon oil (B). In this way, an elastic fiber and a fiber structure comprising the same are provided that are suitable for obtaining an elastic sheet that has excellent elastic fiber unraveling properties and adhesiveness to hot melt adhesives, and that exhibits good adhesiveness even when processed at a high draft, and for obtaining a sanitary product that is soft to the touch.

公开(公告)号：US20220194034A1

公开(公告)日：2022-06-23

申请号：US17268977

申请日：2019-08-30

申请人： THE UNIVERSITY OF SYDNEY

发明人： Richard Lwin ,  Simon Charles Fleming ,  Alessio Stefani ,  Md Rejvi Kaysir

IPC分类号： B29D11/00 ,  C08L75/04 ,  C08L33/12 ,  D01F6/70 ,  D01F6/16

摘要： A fibre drawing method for forming a fibre from a low Young's modulus material.

公开(公告)号：US11339504B2

公开(公告)日：2022-05-24

申请号：US16478344

申请日：2018-02-08

申请人： BASF SE

发明人： Yasuyuki Suzuki

IPC分类号： D01D5/10 ,  D01F6/70 ,  D01D1/06

摘要： A process for producing an elastic fiber comprising: melt-spinning a raw material composition, which comprises a thermoplastic polyurethane elastomer, at a spinning rate of 2,500 m/min to 10,000 m/min. The thermoplastic polyurethane elastomer comprises soft-segments obtained by reacting a polyether polyol as a long chain polyol.

公开(公告)号：US11286586B2

公开(公告)日：2022-03-29

申请号：US16658434

申请日：2019-10-21

申请人： Heedae Park

发明人： Heedae Park

IPC分类号： D02G3/04 ,  D01F6/70 ,  D01F1/10 ,  C08L75/04 ,  C08K3/36 ,  C08J3/22 ,  C08G18/08 ,  C09D175/04 ,  D02G3/32

摘要： The present invention provides a resin for thermoplastic polyurethane (TPU) yarn using nanosilica and a method for manufacturing the same. Nanosilica having a particle size of 100 nm or less is added as a thickening agent for improving productivity and glossiness of TPU yarns, such as mono-filament TPU yarns having a denier count of 50 to 350 or multi-filament TPU yarns having a denier count of 50 or less. No TPU coating is needed for applying to the surface of polyester or nylon yarns, thereby securing desired workability and properties and realizing continuous drawing of TPU yarns without thread breakage. The content of nanosilica at least from 0.1 or 0.3 to 7 phr, or a non-zero content of 7 phr or less in TPU resin is optimal for productivity of mono- or multi-filament yarns. The content of nanosilica from 0.5 to 1.5 phr is optimum for both productivity and cost reduction.