EP0144718A2 - Emploi de liants à base de résines phénoliques durcissables pour lier des matières fibreuses lors de la fabrication d'étoffes non-tissées - Google Patents

Emploi de liants à base de résines phénoliques durcissables pour lier des matières fibreuses lors de la fabrication d'étoffes non-tissées Download PDF

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Publication number
EP0144718A2
EP0144718A2 EP19840113120 EP84113120A EP0144718A2 EP 0144718 A2 EP0144718 A2 EP 0144718A2 EP 19840113120 EP19840113120 EP 19840113120 EP 84113120 A EP84113120 A EP 84113120A EP 0144718 A2 EP0144718 A2 EP 0144718A2
Authority
EP
European Patent Office
Prior art keywords
binders
fibrous materials
woven fabrics
manufacture
additives
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Withdrawn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
EP19840113120
Other languages
German (de)
English (en)
Inventor
Eckart Teschner
Richard Dr. Sattelmeyer
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of EP0144718A2 publication Critical patent/EP0144718A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used

Definitions

  • Processes are known for binding fibrous materials, in particular textile fibers, for producing nonwovens and insulating or upholstery mats produced therefrom, and molded parts, which are based on the fact that curable phenol resins of the novolak type with curing agents (including compounds containing methylol groups or those giving off methylene groups, in particular hexamethylenetetramine are understood) in the form of fine powders mixed with the fibers and then hardened by the action of heat at temperatures above 120 ° C.
  • the binders can also contain pigments and other conventional additives such as processing aids, inorganic fillers, waxes, metal salts (e.g. aluminum stearate). To bind the dust components, the powders can be sprayed with small amounts of mineral oils.
  • the binders are not only so fine that they penetrate well into the interstices of the fibers, but can be conveyed easily in the processing plants, can be metered well and can therefore be distributed well on and in the fiber material.
  • thermosetting resins are already known from DE-B-1167004.
  • soot is added to an impregnating compound, with which the fabric layers are first impregnated and then processed into fabric pressed materials.
  • the addition of carbon black has some mechanical properties, i.e. Finished properties of the pressed fabrics improved.
  • the invention provides for the use of fibrous materials, the use of powdered binders which, in addition to the previously customary constituents such as curable phenolic resins, hardening agents and optionally other customary additives, as further components carbon black and / or metal powder and / or graphite an amount of at most 40% by weight, based on the overall composition.
  • the proportion by weight of these components can be, for example, 0.3 to 30% by weight, preferably 0.5 to 25% by weight special 1 to 20 wt .-%, based on the overall composition.
  • the binders corresponding to this composition do not stick to the containers even in a thin layer, reduce the development of dust considerably, can be conveyed well on conveyor belts without caking, are distributed well and evenly between the fibers to be bound and have hardly any noticeable tendency to add the metering devices. There is no negative impairment of the properties of the end products obtained.
  • Suitable novolak resins are e.g. those made from phenol, polyvalent mono- or multinuclear phenols such as resorcinol, bisphenols, e.g. Diphenylolpropane and / or diphenylolmethane, or monohydric or polyhydric phenols such as alkyl or aralkylphenols substituted with a hydrocarbon group, e.g. 1 to 20, preferably 4 to 18, carbon atoms in the substituent such as tert-butylphenol, octylphenol, nonylphenol, kidney tree (cashew) nutshell oil are built up.
  • phenol polyvalent mono- or multinuclear phenols such as resorcinol, bisphenols, e.g. Diphenylolpropane and / or diphenylolmethane
  • monohydric or polyhydric phenols such as alkyl or aralkylphenols substituted with a hydro
  • Usual compounds containing methylol groups or those giving off methylene groups are used as curing agents, paraformaldehyde and in particular hexamethylenetetramine being the most common in practice.
  • the optimal amounts of curing agent required for curing must in principle be determined in preliminary tests and are generally between 2 and 20, preferably from 5 to 15,% by weight, based on novolak.
  • additives are e.g. the types of soot on the market as well as finely powdered metals or alloys such as iron, copper, aluminum, brass, bronze, etc. suitable.
  • the material obtained from natural occurrence or by synthetic processes can be used as graphite.
  • the particle size should not be too large and the percentage of the fraction with a particle size below 0.2 mm should not be less than 8%.
  • the binder system can be modified by additional components depending on the practical requirements, whereby various properties in processing and in the end product can be improved.
  • natural and synthetic resins can be used, for example, to adapt the melting behavior.
  • rosin of various qualities tall resin, balsam resin, damar resin and copal resin can be used as the natural resin, while rosins modified with phenolic resin, terpene phenolic resins, polyterpene resins, hydrocarbon resins, rosin modified with maleic acid and / or acrylic acid and epoxy resins or combinations thereof are suitable as synthetic resins.
  • Resins with sufficiently high acid numbers (over 70) such as rosin or synthetic resins based thereon can also be used for a catalytic acceleration of the hardening, and also mono- and / or polycarboxylic acids such as benzoic acid, maleic acid, fumaric acid and / or adipic acid.
  • paraffins or waxes on a natural basis such as carnauba wax and montan waxes or those on a synthetic basis such as polyethylene waxes and / or metal salts of longer-chain fatty acids such as calcium or aluminum stearate can be used.
  • inorganic additives such as kaolin, rock flour or calcium borate can be used as further modifying agents to achieve certain desired properties such as reducing the flammability or increasing the thermal resistance.
  • Small additions of natural mineral and / or synthetic oils or corresponding mixtures can also be used to reduce the development of dust.
  • the binder system is produced in conventional mixing units for the production of powdery mixtures, the individual components being metered into the mixer in the required particle size.
  • Novolak A was obtained by condensation of phenol and formaldehyde in a molar ratio of 1: 0.73 in the presence of 0.02 mol of oxalic acid per mole of phenol as a catalyst in a conventional manner by means of 37% aqueous formaldehyde solution and subsequent distillation of the volatile components. Melting point 73 ° C.
  • Novolak B was produced by condensation of phenol and cresol on the one hand and formaldehyde in a molar ratio of 1: 0.25: 1 in the presence of 0.01 mol of H 3 PO 4 (used as 80% acid) per mol of phenol, as was the case for Novolak A is described. Melting point 81 ° C.
  • the grinding was carried out to the same particle size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP19840113120 1983-11-04 1984-10-31 Emploi de liants à base de résines phénoliques durcissables pour lier des matières fibreuses lors de la fabrication d'étoffes non-tissées Withdrawn EP0144718A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833339899 DE3339899A1 (de) 1983-11-04 1983-11-04 Verwendung von bindemitteln auf basis von haertbaren phenolharzen zur bindung von faserigen materialien fuer die herstellung von vliesen
DE3339899 1983-11-04

Publications (1)

Publication Number Publication Date
EP0144718A2 true EP0144718A2 (fr) 1985-06-19

Family

ID=6213448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840113120 Withdrawn EP0144718A2 (fr) 1983-11-04 1984-10-31 Emploi de liants à base de résines phénoliques durcissables pour lier des matières fibreuses lors de la fabrication d'étoffes non-tissées

Country Status (2)

Country Link
EP (1) EP0144718A2 (fr)
DE (1) DE3339899A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176849A3 (fr) * 1984-09-28 1989-04-26 Hoechst Aktiengesellschaft Etoffe non tissée

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316015A1 (de) * 1993-05-13 1994-11-17 Akzo Nobel Nv Verstreckter, verschweißbarer Streifen aus Kunststoff und daraus hergestellte Strukturen
DE19524373A1 (de) * 1995-07-04 1997-01-09 Schill & Seilacher Verfahren zur flammhemmenden Ausrüstung von Fasermatten und nach diesem Verfahren ausgerüstete Fasermatte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1399062A (fr) * 1964-06-11 1965-05-14 Feutres non tissés avec charges minérales incorporées et leur procédé de fabrication
FR1586710A (fr) * 1968-09-23 1970-02-27
SE7703488L (sv) * 1977-03-28 1978-09-29 Skf Nova Ab Platta for golv e d med hog slaghallfasthet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176849A3 (fr) * 1984-09-28 1989-04-26 Hoechst Aktiengesellschaft Etoffe non tissée

Also Published As

Publication number Publication date
DE3339899A1 (de) 1985-05-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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18W Application withdrawn

Withdrawal date: 19850620

R18W Application withdrawn (corrected)

Effective date: 19850620

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TESCHNER, ECKART

Inventor name: SATTELMEYER, RICHARD, DR.