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
  • 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
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
  • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2484—Coating or impregnation is water absorbency-increasing or hydrophilicity-increasing or hydrophilicity-imparting
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]

Definitions

• the present invention relates to additives for the permanent hydrophilization of polyolefins containing materials preferably polypropylene fibers.
• the surface of plastic products must have special effects that are either not at all or only during the shaping for technical reasons imperfectly or, for economic reasons, have it produced only disadvantageously.
• Such a Effects include improving wettability with polar liquids such as water
• Technical applications are, for example, in the field of the production of Hygiene articles.
• nonwovens are usually made of synthetic fibers, such as polyolefin or polyester fibers, because these Fibers are inexpensive to produce, have good mechanical properties and are thermal are resilient.
• untreated polyolefin or polyester fibers are suitable for this Not intended for use because they are not permeable due to their hydrophobic surface for aqueous liquids.
• the present invention relates to the use of reaction products of 1 part Polyethylene glycol with 2 parts of fatty acids with 10 to 12 carbon atoms or their derivatives as an additive for permanent hydrophilization of materials containing polyolefins.
• the additives in materials containing polyolefins are preferred Fibers, fabrics such as nonwovens, foils and foams are used for permanent hydrophilization. All known polymer and copolymer types on ethylene or are suitable here Propylene base. Mixtures of pure polyolefins with copolymers are also basically suitable.
• poly (ethylene) such as HDPE (high density polyethylene), LDPE (low density polyethylene), VLDPE (very low density polyethylene), LLDPE (linear low density polyethylene), MDPE (medium density polyethylene), UHMPE (ultra high molecular polyethylene), VPE (cross-linked Polyethylene), HPPE (high pressure polyethylene);
• Poly (propylene) such as isotactic polypropylene; syndiotactic polypropylene; Metallocene-catalyzed polypropylene, impact-modified Polypropylene, random copolymers based on ethylene and propylene, block copolymers Based on ethylene and propylene; EPM (poly [ethylene-co-propylene]); EPDM (poly [ethylene-co-propylene-co-conjugated Dien]).
• polystyrene poly (styrene); Poly (methylstyrene); Poly (oxymethylene); Metallocene-catalyzed alpha-olefin or cycloolefin copolymers such as norbornene-ethylene copolymers; Copolymers containing at least 60% ethylene and / or styrene and less than 40% Monomers such as vinyl acetate, acrylic acid ester, methacrylic acid ester, acrylic acid, acrylonitrile, vinyl chloride.
• polymers examples include: poly (ethylene-co-ethyl acrylate), poly (ethylene-co-vinyl acetate), Poly (ethylene-co-vinyl chloride), poly (styrene-co-acrylonitrile). Graft copolymers and are also suitable Polymer blends, that is, mixtures of polymers in which, inter alia, the aforementioned Polymers are included, for example polymer blends based on polyethylene and polypropylene.
• homopolymers and copolymers based on ethylene and Propylene is particularly preferred.
• polyolefin only polyethylene, in another embodiment exclusively polypropylene, in a further embodiment copolymers based on ethylene and Propylene.
• the additives in Polypropylene fibers are used.
• Preferred diols are polyethylene glycols with a Molecular weight of 300 to 600, preferably with a molecular weight of 400, with fatty acids or their Derivatives by processes known per se, preferably in the presence of catalysts, implemented.
• Saturated fatty acids having 10 to 12 carbon atoms and being suitable are particularly preferred
• Fatty acid derivatives are preferred methyl esters of C10 to C12 fatty acids.
• the alcohol and the Acid components are reacted in a molar ratio of about 1 to 2.
• the fibers preferably contain the additives in amounts of 0.5 to 10% by weight, preferably 0.5 up to 5 wt .-% and 1.0 to 2.5 wt .-% based on the fiber weight.
• the processes for spinning are known to the person skilled in the art and are used, for example described in WO 95/10648 or in US 3,855,046.
• Another object of the invention is the use of the according to that described above Process produced hydrophilized fibers which can be wetted by aqueous media on polyolefin Basis for the production of textile fabrics.
• the textile fabrics are preferred Nonwovens. In a particularly preferred embodiment, these textile fabrics are for Intended use in diapers.
• the individual Wetting test is a suitable simulation. Diapers are usually over a Period worn from 3 to 5 hours, with the inside averaging up to 3 times with urine is wetted. It must then be ensured that a hydrophilic nonwoven based on a otherwise hydrophobic plastic is sufficiently wettable so that the urine through the fleece penetrate and can be bound by the absorber material of the diaper.
• Nonwovens can be produced using all of the methods known in the prior art for producing nonwovens, such as for example in Ullmann's Encyclopedia of Industrial Chemistry, Vol. A 17, VCH Weinheim 1994, Pages 572-581. Nonwovens are preferred, either were manufactured according to the so-called “dry laid” - or the spunbonded or spunbond process.
• the "dry laid” process is based on staple fibers, which are usually carded into individual fibers separated and then using an aerodynamic or hydrodynamic process to be consolidated into the unconsolidated nonwoven. This is then, for example, by a thermal treatment combined to the finished fleece (the so-called "thermobonding").
• Example 1 Preparation of a polyethylene glycol 400 dilaurate
• 180g polyethylene glycol 400 are in the presence of 1.68g Svedcat 3 (Sn organic catalyst of Svedstab) with 155.6 decanoic acid.
• the reaction mixture is under nitrogen blanket heated to 100 ° C.
• the water formed is gradually distilled off, the bath temperature is up to increased to 180 ° C. If no more water is separated, the pressure is reduced to 5 mbar and the remaining water was distilled off at 180 ° C. for 45 minutes.
• the reaction is finished if none Water is deposited more.
• SZ 8.7 g KOH / g
• the wetting test is passed if C1 to C3 are less than 5 seconds.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Artificial Filaments (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Catalysts (AREA)
• Lubricants (AREA)

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• 2000
  • 2000-03-30 DE DE10015554A patent/DE10015554A1/de not_active Withdrawn
• 2001
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  • 2001-02-06 EP EP01102561A patent/EP1138810B1/fr not_active Expired - Lifetime
  • 2001-02-06 TR TR2003/00987T patent/TR200300987T4/ unknown
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  • 2001-03-20 WO PCT/EP2001/003169 patent/WO2001075199A1/fr active Application Filing
• 2003
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