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1.发明公开公开(公告)号：EP2643267A1
公开(公告)日：2013-10-02
申请号：EP11779372.9
申请日：2011-10-26
Applicant: Teijin Aramid B.V.
Inventor： KOEHORST, Hendrikus, Johannes , BOER, Teunis Leendert
CPC classification number: C01B17/88 , D01F13/04 , Y02P70/629
Abstract: The invention pertains to a method of increasing the sulfuric acid concentration of a first aqueous sulfuric acid solution with a sulfuric acid concentration of 82-89% to a concentrated sulfuric acid solution with a sulfuric acid concentration of at least 90%, comprising the steps of evaporating water from the first aqueous sulfuric acid solution in an evaporator vessel to the concentrated sulfuric acid solution, pumping around a mixture of the first aqueous sulfuric acid solution, part of the concentrated sulfuric acid solution, a second aqueous sulfuric acid solution, and hydrogen peroxide through an enameled piping system comprising the evaporator vessel and one or more heaters and pumps, which piping system is operating at a temperature of at least 180°C, characterized in that the sulfuric acid concentration of the second aqueous sulfuric acid solution is at least 90%.
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2.发明授权
公开(公告)号：EP2205781B1
公开(公告)日：2012-06-20
申请号：EP08842223.3
申请日：2008-10-10
Applicant: Teijin Aramid B.V.
Inventor： KALSBEEK, Esther Christina , BRUINING, Wessel Joseph
CPC classification number: D01F13/04 , D01F6/605 , Y02P70/629 , Y10T442/2893 , Y10T442/2902
Abstract: The invention pertains to a method for spinning and washing aramid fiber and for recovering sulfuric acid, using a spinning unit and a sulfuric acid recovery unit, comprising the steps: a) spinning an aramid polymer from a sulfuric acid spin dope to a yarn and coagulating the yarn in a coagulation bath having an inlet for water or diluted sulfuric acid and an outlet for sulfuric acid enriched water; b) washing the yarn with water to obtain washed yarn and washing water containing 0.5-20 wt.% sulfuric acid; c) recycling the sulfuric acid enriched water and optionally the washing water to the sulfuric acid recovery unit; d) increasing the sulfuric acid content of the recycled sulfuric acid enriched water, and optionally the washing water, by evaporation to obtain 20 to 98% sulfuric acid and water; e) mixing the 20 to 98% sulfuric acid with oleum to obtain 98-105% sulfuric acid; f) recycling the 98-105% sulfuric acid to the spinning unit for use as sulfuric acid spin dope.
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3.发明公开Method of separation and cleaning of post consumer carpet face yarn from carpet backing and yarn product produced therefrom 审中-公开一种用于分离和Teppichrückseitengarn的净化Altteppichvorderseitengarn和产品由其生产方法
公开(公告)号：EP2039486A3
公开(公告)日：2011-06-29
申请号：EP08252165.9
申请日：2008-06-24
Applicant: Universal Fibers, Inc.
Inventor： Hoover, Jr., George Taylor , Roark, Milton Keith , McSheehy, Jr., Brendan Francis , Studholme, Matthew Benjamin
CPC classification number: D01G11/00 , B29B17/0042 , B29B17/02 , B29B2017/0224 , B29B2017/0227 , B29B2017/0279 , B29B2017/0289 , B29K2077/00 , B29K2105/065 , B29K2105/26 , B29L2031/7322 , D01F6/00 , D01F13/04 , Y02P70/629 , Y02W30/523 , Y02W30/62 , Y02W30/622 , Y02W30/66 , Y10S8/924 , Y10S8/93 , Y10S8/931 , Y10T428/2929 , Y10T428/2969
Abstract: A process for producing a synthetic fiber composition with reclaimed post consumer carpet yarn, wherein face yarn is shaved from post consumer carpet using a shaving device to provide shaved face yam, the shaved face yarn is reduced in size, contaminants are removed using mechanical screeners, the shave face yarn is melt filtered, and then fiber spun.
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公开(公告)号：EP2095049A1
公开(公告)日：2009-09-02
申请号：EP07853411.2
申请日：2007-12-17
Applicant: E. I. Du Pont de Nemours and Company
Inventor： HOVANEC, Joseph Brian , FRISK, Simon
CPC classification number: D04H3/16 , D01D5/0038 , D01D5/0069 , D01D10/02 , D01F6/60 , D01F13/04 , D04H3/03 , F26B3/283 , F26B13/101 , Y02P70/629 , Y10T442/626
Abstract: A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through a solvent stripping zone wherein infrared radiation irradiates the nonwoven web and a solvent stripping fluid impinges on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.
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5.发明公开Method for spinning and washing aramid fiber and recovering sulfuric acid 审中-公开一种用于纺纱和洗涤芳族聚酰胺纤维以及用于回收硫酸的方法
公开(公告)号：EP2053147A1
公开(公告)日：2009-04-29
申请号：EP07020662.8
申请日：2007-10-23
Applicant: Teijin Aramid B.V.
Inventor： Kalsbeek, Esther Christina , Bruining, Wessel Joseph
CPC classification number: D01F13/04 , D01F6/605 , Y02P70/629 , Y10T442/2893 , Y10T442/2902
Abstract: The invention pertains to a method for spinning and washing aramid fiber and for recovering sulfuric acid, using a spinning unit and a sulfuric acid recovery unit, comprising the steps:
a) spinning an aramid polymer from a sulfuric acid spin dope to a yarn and coagulating the yarn in a coagulation bath having an inlet for water or diluted sulfuric acid and an outlet for sulfuric acid enriched water;
b) washing the yarn with water to obtain washed yarn and washing water containing 0.5-20 wt.% sulfuric acid;
c) recycling the sulfuric acid enriched water and optionally the washing water to the sulfuric acid recovery unit;
d) increasing the sulfuric acid content of the recycled sulfuric acid enriched water, and optionally the washing water, by evaporation to obtain 20 to 98% sulfuric acid and water;
e) mixing the 20 to 98% sulfuric acid with oleum to obtain 98-105% sulfuric acid;
f) recycling the 98-105% sulfuric acid to the spinning unit for use as sulfuric acid spin dope.Abstract translation: 本发明涉及用于纺纱和洗涤芳族聚酰胺纤维的方法以及用于回收硫酸，利用纺丝单元和硫酸回收单元，其包括以下步骤：在芳族聚酰胺聚合物从硫酸纺丝原液A）纺丝的纱线和凝固 纱线在具有入口，用于水或稀释的硫酸，并在出口，用于富集水硫酸凝固浴; b）清洗与水的纱线，得到洗过的纱和洗涤水含有0.5-20重量％的硫酸。 c）中回收硫酸富集的水和任选的洗涤水到硫酸回收单元; D）增加再循环硫酸的硫酸含量富集的水，以及任选的清洗水，通过蒸发，得到20〜98％的硫酸和水; E）混合的20至98％硫酸与发烟硫酸以获得98-105％的硫酸; F）再循环98-105％硫酸至该纺纱单元用作硫酸纺丝浆液。
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公开(公告)号：EP1354084B1
公开(公告)日：2008-08-13
申请号：EP02710011.4
申请日：2002-01-16
Applicant: Carl Freudenberg KG
Inventor： REIBEL, Denis , GROTEN, Robert , RIBOULET, Georges
CPC classification number: D04H3/147 , D01F8/04 , D01F8/14 , D01F13/04 , D04H3/011 , D04H3/11 , D04H3/14 , D04H3/16 , Y02P70/629
Abstract: The invention relates to a method for producing monocomponent-microfilaments comprised of multiple component filaments, particularly bi-component filaments, which are produced in a melt spinning method, whereby one of the components is melted out of the multiple component filaments by effecting a thermal treatment using a melt fluid.
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7.发明公开Method of reuse of polyamide and polyester mixed waste carpeting by addition of compatibilizer 审中-公开过程通过加入相容剂选自聚酰胺和聚酯的混合物回收地毯废料
公开(公告)号：EP0984087A1
公开(公告)日：2000-03-08
申请号：EP98308844.4
申请日：1998-10-28
Applicant: Cookson Fibers, Inc.
Inventor： Studholme, Matthew B.
CPC classification number: B29B17/0026 , B29K2067/00 , B29K2077/00 , B29L2031/7322 , D01F6/90 , D01F13/04 , Y02P70/629 , Y02W30/62
Abstract: Polyamide and polyester mixed waste carpeting can be recycled for use in fabricating new carpeting and pile fabrics by adding a copolymer derived from an alkene monomer and an unsaturated epoxy-containing monomer as a compatibilizing agent.
Abstract translation: 聚酰胺和聚酯混合废弃物地毯可以通过添加从在烯烃单体和不饱和在含环氧基的单体作为相容剂衍生的共聚物制造新的地毯和绒头织物被再循环使用。
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公开(公告)号：EP0443207B1
公开(公告)日：1994-09-21
申请号：EP90125735.2
申请日：1990-12-28
Applicant: BASF CORPORATION
Inventor： Shealy, Dennis Gordon , Stamey, Eugene Thomas
CPC classification number: D01D5/092 , B08B15/00 , D01F13/04 , Y02P70/629
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9.发明公开
公开(公告)号：EP0294366A1
公开(公告)日：1988-12-14
申请号：EP86902709.0
申请日：1986-04-11
Applicant: ALLIED CORPORATION
CPC classification number: D01D10/00 , D01D13/02 , D01F13/04 , Y02P70/629
Abstract: Appareil et procédé d'extraction d'un matériau d'une longueur courante de fibre continue (F) consistant à déplacer de manière continue la fibre au travers d'un conduit (14) tout en permettant l'écoulement simultané d'un solvant pour le matériau au travers du conduit. Le conduit possède une longueur et une section transversale suffisantes pour faciliter l'extraction de la quantité désirée de matériau. L'écoulement se fait de préférence dans le sens contraire au déplacement de la fibre.
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公开(公告)号：EP3220782A4
公开(公告)日：2018-04-04
申请号：EP15861579
申请日：2015-11-17
Applicant: MOHAWK IND INC
Inventor： CLARK THOMAS R
IPC: B29C44/50 , A47G27/02 , B29B15/00 , B29B17/00 , B29C47/00 , B29C47/10 , B29C47/36 , B29C47/42 , B29C47/68 , B29C47/76 , B29K23/00 , B29K25/00 , B29K27/06 , C08J11/04 , D01F6/62
CPC classification number: D01F6/62 , B29B15/00 , B29B17/0026 , B29B17/0042 , B29C47/0004 , B29C47/0009 , B29C47/1018 , B29C47/366 , B29C47/42 , B29C47/68 , B29C47/766 , B29K2023/065 , B29K2025/06 , B29K2027/06 , B29K2067/003 , B29K2105/26 , C08J11/04 , C08J11/06 , D01F6/00 , D01F13/04 , Y02P70/629 , Y02W30/62
Abstract: A method of recycling polymers and other plastics comprises: (A) grinding recycled PET bottles (or other suitable recycled polymer) into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) preparing the polymer melt for recycling into a new product. In various embodiments, the above process may be utilized in the recycling of, for example, polytrimethylene terephthalate (PTT), polypropylene, polyvinyl chloride (PVC), high-density polyethylene (HDPE), polystyrene (PS), expanded polystyrene (EPS), or any other suitable polymer or plastic
