EP1828448A1 - Corps moule en cellulose et procede de fabrication dudit corps - Google Patents

Corps moule en cellulose et procede de fabrication dudit corps

Info

Publication number
EP1828448A1
EP1828448A1 EP05812757A EP05812757A EP1828448A1 EP 1828448 A1 EP1828448 A1 EP 1828448A1 EP 05812757 A EP05812757 A EP 05812757A EP 05812757 A EP05812757 A EP 05812757A EP 1828448 A1 EP1828448 A1 EP 1828448A1
Authority
EP
European Patent Office
Prior art keywords
microcapsules
shaped body
cellulose
viscose
body according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05812757A
Other languages
German (de)
English (en)
Inventor
Josef Schmidtbauer
Gert Kroner
Christian Mechtler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lenzing AG
Original Assignee
Lenzing AG
Chemiefaser Lenzing AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP1828448A1 publication Critical patent/EP1828448A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter

Definitions

  • the present invention relates to a cellulosic molding, in particular a cellulose fiber, and a process for their preparation.
  • Cellulosic shaped bodies, in particular fibers, are produced today essentially according to two methods:
  • viscose an alkaline cellulose xanthate solution is spun into one or more regeneration baths.
  • viscose Depending on the exact composition of spinning solution ("viscose") and regeneration baths one speaks of viscose or modal fibers.
  • the two groups are classified by the BISFA (The International Bureau for the Standardization of Man Made Fibers) as generic terms.
  • amine oxide process or "lyocell process”.
  • Both methods also involve the production of other shaped articles, e.g. Films, membranes, etc. possible.
  • micro-capsules as carriers of various drugs in a variety of fields to make products consisting of a base and substances which are incompatible with this base material and / or whose release is to be controlled.
  • milk capsules are mostly used in the finishing of fibers and textiles in order to subsequently fix active ingredients to the (finished) fibers and textiles.
  • EP-A 1 359 247 A1 the entrapped active ingredients can be released by diffusion or mechanical or chemical stress.
  • microcapsules are not permanently bound to the fibers and are removed by repeated washings.
  • US Pat. No. 3,852,401 describes a process for producing synthetic fibers from various synthetic polymers (but not viscose fibers) containing microencapsulated fiber-modifying substances. In this process, the microcapsules are prepared in situ in the spinning solution.
  • US Pat. No. 3,852,401 points out that separate preparation of the milk capsules and mixing of the microcapsules into the spinning solution of the synthetic polymers leads to problems, since the microcapsules form larger aggregates as a result of the change in the dispersion medium, which can not be comminuted again.
  • EP 0 306 202 B1 also describes, with regard to synthetic polymers but not viscose fibers, a process for incorporating milk capsules containing heat storage substances.
  • EP 1 367 152 A1 describes a process of producing fibers and nonwoven fabrics made therefrom from thermoplastic materials incorporating fragrances into milk capsules.
  • EP 0 687 313 describes a method of hollow spheres with a diameter of less than 1.5 ⁇ m in cellulose fibers. These beads contain no modifying substance, but serve themselves as matting agents.
  • JP 2-154007 describes the preparation of regenerated cellulose fibers in which microcapsules with fragrances are integrated. Specifically described is the production of fibers by the Kupferoxidammonium- method.
  • This object is achieved with a cellulosic molding containing a modifying substance in microencapsulated form.
  • a molded article incorporating the microcapsules with the modifying substance can be produced. within the cellulosic matrix of the shaped body.
  • microcapsules can be incorporated up to a content of 30% by weight, based on molding.
  • microcapsules are used which have a size of 10 microns or less. This is significantly smaller than the microcapsules used according to JP 2-154007 in Kupferoxidammoniak- method.
  • the microencapsulated modifying substance is preferably selected from the group consisting of flame retardants, heat storage substances, fragrances, dyes, cosmetic Active ingredients and therapeutic agents selected.
  • flame retardants eg so-called phase change materials
  • flame retardants eg red phosphorus
  • the shaped body according to the invention is preferably in the form of a fiber, in particular in the form of a viscose fiber or lyocell fiber.
  • the process for producing the shaped body according to the invention comprises shaping a spinning solution of the cellulose or a cellulose derivative and is characterized in that the spinning solution and / or a precursor of the spinning solution microcapsules containing the modifying substance are added.
  • the spinning solution is preferably a viscose or a solution of cellulose in an aqueous tertiary amine oxide.
  • precursors of the spinning solution are the starting materials or intermediates in the above-outlined viscose or Lyo cell compiler to understand, ie in the case of the viscose, for example, the cellulosic starting material, the alkali cellulose or cellulose xanthogenate prior to dissolution or in the case of Lyocell compilers the cellulosic starting material, the aqueous amine oxide used or an aqueous suspension of the cellulose in the amine oxide before solution preparation.
  • microcapsules are preferably added in the form of an aqueous suspension.
  • Example (a) Into a ready-to-spin viscose for the production of modal fibers was stirred a 10% aqueous microcapsule suspension (RT35vis2, Aero company, containing a phase change material) in a concentration of 10% by weight (microcapsules based on cellulose) (example (a)) resp ., added continuously just before the spin filtration (Example (b)).
  • RT35vis2 10% aqueous microcapsule suspension
  • Aero company Aero company
  • Viscose fibers were prepared by methods known per se and their strength was measured. During the spinning process, no increase in pressure could be detected before or after spin filtration. The melting enthalpy of the incorporated phase change material was determined on the finished, dried fibers by means of DSC (Differential Scanning Calorimetry).
  • microcapsules based on cellulose stirred.
  • the microcapsules contain dyes or dye precursors and / or perfumes.
  • Viscose fibers were prepared by methods known per se and their strength was measured. During the spinning process, no increase in pressure could be detected before or after spinning filtration.
  • a 30% aqueous microcapsule suspension (type: LD-dev, Aero company) in concentrations of 5-30% by weight (microcapsules based on cellulose) was metered continuously into the spinning pump and by means of downstream homogenizer mixed.
  • the microcapsules contain dyes.
  • Viscose fibers were prepared by methods known per se and their strength was measured. During the spinning process, no increase in pressure could be detected before or after spinning filtration.
  • microcapsules could be demonstrated on the one hand by electron microscopy images, and on the microcapsules with incorporated dyes also directly by light microscopic images.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)

Abstract

Corps moulé en cellulose, en particulier fibre de viscose ou fibre lyocell. Les corps moulés selon la présente invention contiennent une substance de modification sous forme microencapsulée.
EP05812757A 2004-12-23 2005-12-05 Corps moule en cellulose et procede de fabrication dudit corps Withdrawn EP1828448A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0216204A AT501252B1 (de) 2004-12-23 2004-12-23 Cellulosischer formkörper und verfahren zu seiner herstellung
PCT/AT2005/000488 WO2006066291A1 (fr) 2004-12-23 2005-12-05 Corps moule en cellulose et procede de fabrication dudit corps

Publications (1)

Publication Number Publication Date
EP1828448A1 true EP1828448A1 (fr) 2007-09-05

Family

ID=35846878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05812757A Withdrawn EP1828448A1 (fr) 2004-12-23 2005-12-05 Corps moule en cellulose et procede de fabrication dudit corps

Country Status (5)

Country Link
US (1) US20080032128A1 (fr)
EP (1) EP1828448A1 (fr)
CN (1) CN101094942A (fr)
AT (1) AT501252B1 (fr)
WO (1) WO2006066291A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10002760B2 (en) 2014-07-29 2018-06-19 Dow Silicones Corporation Method for manufacturing SiC wafer fit for integration with power device manufacturing technology

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US9434869B2 (en) 2001-09-21 2016-09-06 Outlast Technologies, LLC Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof
IL176693A0 (en) * 2006-07-04 2006-10-31 Aharon Eyal Stable suspensions containing microcapsules and methods for the preparation thereof
DE102006046358B3 (de) * 2006-09-28 2007-11-29 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zur Herstellung von funktionellen cellulosischen Formkörpern
DE102007054702B4 (de) 2007-11-14 2018-10-18 Smartpolymer Gmbh Verfahren zur Herstellung von cellulosischen Formkörpern, cellulosischer Formkörper und dessen Verwendung
AT510909B1 (de) * 2010-12-20 2013-04-15 Chemiefaser Lenzing Ag Flammgehemmte cellulosische man-made-fasern
CN102691132B (zh) * 2011-03-23 2016-02-10 湖州珠力纳米材料科技开发有限公司 微胶囊型芦荟共混再生纤维素纤维与其制备方法
CN106012075B (zh) * 2016-07-28 2019-02-22 天津工业大学 一种高强粘胶纤维及其制备方法
CN106929931B (zh) * 2017-03-24 2020-05-12 青岛邦特生态纺织科技有限公司 一种含板蓝根提取物的粘胶纤维及其制备方法
CN110184666B (zh) * 2019-06-20 2021-11-16 宜宾屏山辉瑞油脂有限公司 阻燃纤维素纤维的制造方法及制造过程中使用的喷丝头
CN111455487A (zh) * 2020-04-27 2020-07-28 宁波市纤维检验所 一种相变调温纤维及其制备方法

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DE3316880A1 (de) * 1983-05-07 1984-11-08 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von hydrolysestabilen pulverfoermigen ammoniumpolyphosphaten
US4513053A (en) * 1983-06-13 1985-04-23 Pennwalt Corporation Encapsulated phase change thermal energy storage materials and process
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WO2005024102A1 (fr) * 2003-08-30 2005-03-17 Thüringisches Institut Für Textil - Und Kunststoff - Forschung E.V. Corps moules, en particulier fibres et leurs structures en surface, a proprietes thermoregulatives
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10002760B2 (en) 2014-07-29 2018-06-19 Dow Silicones Corporation Method for manufacturing SiC wafer fit for integration with power device manufacturing technology

Also Published As

Publication number Publication date
AT501252A1 (de) 2006-07-15
AT501252B1 (de) 2008-02-15
US20080032128A1 (en) 2008-02-07
CN101094942A (zh) 2007-12-26
WO2006066291A1 (fr) 2006-06-29

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