EP1904210A2 - Moyen de filtrage conçu pour des applications techniques, et son procede de production - Google Patents

Moyen de filtrage conçu pour des applications techniques, et son procede de production

Info

Publication number
EP1904210A2
EP1904210A2 EP06761794A EP06761794A EP1904210A2 EP 1904210 A2 EP1904210 A2 EP 1904210A2 EP 06761794 A EP06761794 A EP 06761794A EP 06761794 A EP06761794 A EP 06761794A EP 1904210 A2 EP1904210 A2 EP 1904210A2
Authority
EP
European Patent Office
Prior art keywords
diacrylate
diallyl
urea
divinyl
resin
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Withdrawn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
EP06761794A
Other languages
German (de)
English (en)
Inventor
Sven Siegle
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1904210A2 publication Critical patent/EP1904210A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof

Definitions

  • Another significant advantage of radiation curing is that no volatile compounds are released from the resin, so the conventional aspiration of from the resin originating emissions and the subsequent treatment and filtration of the exhaust air can be omitted.
  • radiation-curable resins it is possible to use a large number of monomers, oligomers, prepolymers and polymers, such as unsaturated or saturated phenol-based resins or based on polyesters, polyester acrylates, epoxy resins, epoxyacrylates, urethanes and urethane acrylates, polyether acrylates, olefinic resins or silicone acrylates. th.
  • the radical reacts with the novolac to novolak R-ARB as follows. :
  • the cationic polymerization can be effected via suitable salts, e.g. Sulfonium-iodonium-diazonium initiate. These salts also react to electron irradiation and decompose to form acids suitable for cationic polymerization.
  • suitable salts e.g. Sulfonium-iodonium-diazonium initiate. These salts also react to electron irradiation and decompose to form acids suitable for cationic polymerization.
  • Phenolic resins which can be used for radiation curing are obtained by the synthesis of phenols with aldehydes. By electrophilic substitution, three hydrogen atoms of the phenol molecule are replaced by a -CH 2 -OH group. By cleavage of water, these polyfunctional phenol derivatives condense to precondensates.
  • phenolic alcohols methylol
  • Rosolacs are formed from the precondensate and join together by means of methylene bridges to form linear chain molecules, so-called "novolacs". They are prepared by using acids (oxalic acid, hydrochloric acid) and excess phenol and contain by acid further condensation, because of the excess phenol, still largely methylol-free structures. They are obtained as soluble, meltable, non-self-curing and therefore storage-stable oligomers having molecular weights in the range of about 500 to 5000 g / mol. Their aromatic rings are linked by methylene bridges.
  • Resoles are meltable and soluble in various solvents. They react without further additives already at room temperature (self-curing phenolic resins), faster at 100 to 18O 0 C under water and formaldehyde elimination (polycondensation) and molecular enlargement of a through Heat still softenable, solvent only swellable intermediate (Resitol) to the insoluble and infusible final stage (Resit). This reaction can be accelerated by addition of acid.
  • the resin, the paper in papermaking or subsequently on the resin to be crosslinked may also be added with a free radical generator in either a stoichiometric or a catalytic amount.
  • raw materials such as polymerizable or polymerization-promoting materials such as binders, reactive diluents (monomers, low molecular weight, monounsaturated or polyunsaturated compounds such as acrylic acid esters), and optionally photoinitiators and synergists for UV-curable resins may be present in the resin.
  • raw materials with other functions such as inhibitors, pigments, dyes, fillers and other additives may be included in the resin.
  • high-energy radiation in particular electron radiation and UV radiation
  • X-ray or gamma radiation would also be possible, for example Co-60 radiation.
  • only X-ray radiation of less than 5 MeV and electron radiation of less than 10 MeV should be used.
  • the acceleration voltage for electron beam systems is dependent on the desired penetration depth and is preferably about 90 to 200 kV.
  • the absorbed dose of the filter papers to be irradiated is between 10 and 150 kGy when irradiated electronically, preferably between 50 and 100 kGy.
  • the usable wavelength range is between 240 and 400 nm, that is to say between 3 and 6 eV.
  • resin-impregnated filter materials with a synthetic fiber content for example up to 20 or 50% by weight of polyester fibers, or even pure synthetic fiber filter materials, are radiation-curable.
  • a synthetic fiber content for example up to 20 or 50% by weight of polyester fibers, or even pure synthetic fiber filter materials
  • the radiation curing of the resins according to the invention can be used successfully.
  • Resin-cured melt-blown papers in which thermal curing of the resins is not or only possible with difficulty due to the softening of the polymer coating occurring during the curing temperatures can also be crosslinked by radiation.
  • a further preferred embodiment envisages incorporating the radical formers or free-radical-forming reactants into the paper in the required amount during papermaking, provided that the resin in question does not itself form radicals by irradiation, which crosslink with other resin constituents.
  • the curing of the resins can be determined by extraction with acetone (DIN EN ISO 6427) and determination of the hydrophobicity.
  • the curing reaction can also be followed optically in a bathochromic shift of the absorption band, in particular in the case of the no-volaks used here, by a yellowing occurring with the hardening, a) determination of the hydrophobicity
  • the determination of the hydrophobicity is carried out with a water-ethanol mixture. On the paper to be tested is from a Dropper applied a drop of test liquid. After 1 minute, it is observed whether the test liquid, without penetrating, stops on the paper as drops. The more hydrophobic the paper is, the higher the number of the corresponding test liquid.
  • test liquids are listed below:
  • pulp pads were cut out of samples from the company Rayonier (type Ultranier J Bat, thickness: 1.225 mm, 920 gsm, TG: 92.4%) and mixed with novolak in the beaker.
  • the novolak used by Bakelite (type PF 656812, C / B 2067287101, ore No. 3313699140) was obtained directly from Bakelite by Gessner.
  • the irradiation was carried out on an electron beam from WKP / Unterensingen. Manufacturer of the plant was the company ESI. The system is designed for the irradiation of rolls. Therefore, the pads were glued to a carrier (paper / foil) and thus passed through the machine. To prevent excessive ionization, nitrogen inertization was used in all experiments.
  • Comparison thermoset fuel filter paper for comparison was the usual, provided for heat curing fuel filter paper (b) cured in an oven at 165 0 C and the hydrophobicity on the back (RS) and the dirty side (SS) determines the filter paper in function of time.
  • Pentaerythrityl triacrylate poly (ethylene glycol) diacrylate, trimethylolpropane propoxylate triacrylate, 1,6-hexanediol diacrylate, tetra (ethylene glycol) diacrylate, 1,6-hexanediol ethoxylate diacrylate, bisphenol A ethoxylate diacrylate and trimethylolpropane ethoxylate triacrylate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé pour produire un moyen de filtrage pour des applications techniques. Ce procédé consiste à : imprégner un soufflet constitué de papier filtre à l'aide d'une résine, puis ; à faire durcir ce soufflet imprégné de résine par application d'un rayonnement. La présente invention se rapporte en outre à un moyen de filtrage conçu pour des applications techniques, comportant une couche de résine durcie par application d'un rayonnement.
EP06761794A 2005-07-12 2006-07-12 Moyen de filtrage conçu pour des applications techniques, et son procede de production Withdrawn EP1904210A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005032395A DE102005032395A1 (de) 2005-07-12 2005-07-12 Filtermedium für technische Anwendungen und Verfahren seiner Herstellung
PCT/DE2006/001208 WO2007006292A2 (fr) 2005-07-12 2006-07-12 Moyen de filtrage conçu pour des applications techniques, et son procede de production

Publications (1)

Publication Number Publication Date
EP1904210A2 true EP1904210A2 (fr) 2008-04-02

Family

ID=37575393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06761794A Withdrawn EP1904210A2 (fr) 2005-07-12 2006-07-12 Moyen de filtrage conçu pour des applications techniques, et son procede de production

Country Status (5)

Country Link
US (1) US20080308492A1 (fr)
EP (1) EP1904210A2 (fr)
JP (1) JP2009500170A (fr)
DE (2) DE102005032395A1 (fr)
WO (1) WO2007006292A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013203087B9 (en) * 2006-10-26 2015-04-16 Xyleco, Inc. Processing biomass
EP2415820A3 (fr) 2006-10-26 2012-10-31 Xyleco, Inc. Méthode de modification de la structure moléculaire de la biomasse
US20090039018A1 (en) * 2007-08-08 2009-02-12 Jordi Howard C Suspension homopolymerization of an isocyanurates
AU2015215953B2 (en) * 2008-10-03 2016-11-17 Filsen Pty Ltd Method for manufacturing sheet material
EP2350386A4 (fr) * 2008-10-03 2015-08-12 Filsen Pty Ltd Procédé pour fabriquer un matériau en feuille
DE102008062952B4 (de) * 2008-12-23 2014-03-20 Mann + Hummel Gmbh Filterelement in einem Kraftstofffilter
DE102009006584B4 (de) * 2009-01-29 2011-06-01 Neenah Gessner Gmbh Ein- oder mehrlagiges Filtermaterial, Filterelement aus einem solchen Material und Verfahren zu dessen Herstellung
DE102014211021A1 (de) 2014-06-10 2015-12-17 Neenah Gessner Gmbh Imprägnierte Filtermaterialien und daraus hergestellte Filterelemente
CN105951527B (zh) * 2016-05-28 2017-09-22 杭州特种纸业有限公司 一种内燃机滤清器用滤纸及其制备方法
FI130401B (en) * 2020-03-09 2023-08-14 Infinited Fiber Company Oy Separation of polyester-cotton blends
CN113041717B (zh) * 2021-03-24 2022-04-19 美埃(中国)环境科技股份有限公司 一种光固化过滤元件及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2241384B1 (fr) * 1973-05-30 1976-06-11 Commissariat Energie Atomique
GR60807B (en) * 1976-04-05 1978-08-30 Process Scient Innovation Ltd Improvements in or relating to filters for liquids or gases
DE2933998C2 (de) * 1979-08-22 1987-05-27 Otto Dürr Anlagenbau GmbH, 7000 Stuttgart Verfahren und Vorrichtung zur Herstellung eines imprägnierten Papier- oder Vliessubstrats
DE3020333C2 (de) * 1980-05-29 1983-12-29 MD-Verwaltungsgesellschaft Nicolaus & Co-GmbH & Co KG, 8000 München Verfahren zur Herstellung von porösem Papier
US5207871A (en) * 1991-06-13 1993-05-04 Dsm N.V. Process for making transparent paper using a UV curable compositions of maleate, vinyl monomer and an allyl compound
EP0608575A1 (fr) * 1993-01-27 1994-08-03 Dsm N.V. Composition réticulée par exposition à la lumière ultra violette en l'absence de solvant
DE19734941A1 (de) * 1997-06-12 1998-12-24 Wkp Wuerttembergische Kunststo Verfahren zum Herstellen von Papier
NO20002632L (no) * 1999-06-01 2000-12-04 Nippon Catalytic Chem Ind Herdbart behandlingsmiddel og herdebehandlingsprosess
EP1486244A1 (fr) * 2003-06-12 2004-12-15 Mann + Hummel GmbH Elément de filtration avec des propriétés hydrophobes
DE10338560A1 (de) * 2003-08-22 2005-03-17 Degussa Ag Strahlenhärtbare Harze auf Basis hydrierter Keton- und Phenol-Aldehydharze und ein Verfahren zu ihrer Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007006292A2 *

Also Published As

Publication number Publication date
US20080308492A1 (en) 2008-12-18
WO2007006292A2 (fr) 2007-01-18
JP2009500170A (ja) 2009-01-08
DE102005032395A1 (de) 2007-01-25
WO2007006292A3 (fr) 2007-04-19
DE112006002436A5 (de) 2008-06-19

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