DE847492C - Molding compounds - Google Patents

Molding compounds

Info

Publication number
DE847492C
DE847492C DEP1051D DEP0001051D DE847492C DE 847492 C DE847492 C DE 847492C DE P1051 D DEP1051 D DE P1051D DE P0001051 D DEP0001051 D DE P0001051D DE 847492 C DE847492 C DE 847492C
Authority
DE
Germany
Prior art keywords
molding compounds
aniline
condensation products
formaldehyde
mixed
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.)
Expired
Application number
DEP1051D
Other languages
German (de)
Inventor
Walther Dr Kuehne
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEP1051D priority Critical patent/DE847492C/en
Application granted granted Critical
Publication of DE847492C publication Critical patent/DE847492C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/22Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00Compositions of lignin-containing materials
    • C08L97/02Lignocellulosic material, e.g. wood, straw or bagasse
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Description

Preßmassen Es ist bekannt. Formkörper, z. B. Fußstützen, durch Zusamrnenpresseri von Faserstoffen, die mit Amlinharz imprägniert sind, herzustellen.Molding compounds It is known. Molded body, e.g. B. footrests, by compression of fibers impregnated with amlin resin.

Es wurde gefunden, daß man auf einfache Weise Wertvolle Preßmassen erliält,werin man Braunschliff mit Anilin-Formaldehyd-Kondensationsprodukten und ierhältnismäßig geringen Zusätzen von härtbaren Kunstharzen oder mit Mischkondensatiornsprodukten aus den Ausgangsstoffen für diese Bindemittel vermischt. \lan erhält dann bei der Heißverpressurig hochwertige Formkörper von guter Wasserl)estä ndigkeit und guten mechanischen Festigkeitseigenschaften. Als härtbare Kunstharze sind vor allein Pheriol-Formal#dehyd-Einwirkungsprodukte geeignet, doch auch andere sind verwendbar.It has been found that valuable molding compounds can be obtained in a simple manner get whoin brown grinding with aniline-formaldehyde condensation products and Relatively small amounts of curable synthetic resins or mixed condensation products mixed from the raw materials for these binders. \ lan then receives the Hot-pressed, high-quality moldings with good water resistance and good resistance mechanical strength properties. The main curable synthetic resins are pheriol-formaldehyde products suitable, but others can also be used.

Der Braunschliff kann an der Erzeugungsstelle in nassem Zustand verarbeitet werden; man vermischt ihn beispielsweise im Kollergang mit dem ebenfalls in wasserfeuchter Form erhaltenen Anilin-Formaldehyd-Koridensationsprodukt oder dessen in Wasser gelösten Vorprodukten oder mit Kondensationsprodukten aus Anilin, Phenol und Formaldehyd. Nach kurzer Zeit hat die Holzfaser die Harzanteile gebunden, und die Masse kann dann getrocknet und als Preßmasse weiterverarbeitet werden. Deren Darstellung gestaltet sich daher einfach und wirtschaftlich. Je nach Art des Holzschliff: und der Art und Menge der Kunstharze können die Eigenschaften der Preßmassen bzw. Preßkörper weitgehend beeinflußt «-erden. Ebenso kann man die Preßstoffeigenschaften durch Beimischung von: üblichen faserigen Zusatzstoffen. wie Zellstoff, Holzfaser, Baumwolle, Ashest oder Kunstfasern, beeinflussen; ferner kann man andere nichthärtende Kunstharze oder weitere hei Preßmassen übliche Zusätze, wie Bitumen, Wachse u. d@gl., als solche oder in Form von Emulsionen oder Dispersionen sowie Harzleim, ferner Füllstoffe, Pigmente u. dgl. einarbeiten. Härtungsmittel sind meist nicht erforderlich.The brown grinding can be processed in the wet state at the point of production will; it is mixed, for example, in a pan with the one that is also dampened with water Form obtained aniline-formaldehyde coridensation product or its dissolved in water Pre-products or with condensation products from aniline, phenol and formaldehyde. After a short time, the wood fiber has bound the resin and the mass can then dried and can be further processed as molding compound. Whose Presentation is therefore simple and economical. Depending on the type of wood pulp: and the type and amount of synthetic resins can affect the properties of the molding compounds or Compacts largely influenced «-erden. You can also check the properties of the molding material by adding: common fibrous additives. such as pulp, wood fiber, Cotton, ashest, or synthetic fibers, affect; you can also use other non-hardening ones Synthetic resins or other additives common to hot molding compounds, such as bitumen, waxes, etc., as such or in the form of emulsions or dispersions and resin glue, furthermore Incorporate fillers, pigments and the like. Hardening agents are usually not required.

Schließlich ist die Herstellung nicht auf lose Preßmassen dieser Art beschränkt; man kann den gekollerten Stoff auch in bekannter Weise zu Pappe oder Papier aufarbeiten und diese nach Trocknung zu gegebenenfalls geschichteten Formkörpern verpressen. Dadurch wird erfahrungsgemäß eine große Steigerung der mechanischen Festigkeiten erzielt. Diese können für die Herstellung diinnwand@iger Hohlkörper noch dadurch gesteigert werden, daß man den Stoff auf Saugformen absangt, die feuchten Pappenkörper trocknet und heiß nachpreßt.After all, the production is not based on loose molding compounds of this type limited; the rolled material can also be made into cardboard or in a known manner Working up the paper and, after drying, to form optionally layered shaped bodies pressing. Experience shows that this results in a large increase in the mechanical Strengths achieved. These can be used for the production of thin-walled hollow bodies can be increased by the fact that the material is seared on suction molds that are damp Cardboard body dries and presses hot.

Die Massen lassen sich bei verhältismäßig kurzer Preßzeit auch zu dickwandigen Preßkörpern verpressen, da sich die zum Teil entgegengesetzten Eigenschaften von Anilinharz und härtbarem Harz vorteilhaft ergänzen. Beispiel Es werden 5o Ge-,vichtsteile (Trockengewicht) feuchter-Bra.unschliff im Kollergang in einer Mischschnecke, einem Krieter o. dgl. mit .4o Gewichtsteilen (Trockengewicht) Anilin-Formaldeliyd-Harz und ro- Gewichtsteilen Phenoplastpulver feucht vermischt; das Ganze wird bei mäßiger Temperatur getrocknet und schließlich bei 16; bis i75'- und mit etwa 300 bis 5oo kg/(Icm Druck verpreßt.The masses can also be pressed into thick-walled pressed bodies with a relatively short pressing time, since the sometimes opposite properties of aniline resin and curable resin advantageously complement one another. EXAMPLE 50 parts by weight (dry weight) of moist brown ground grinding are mixed in a mixing screw, a Krieter or the like with .40 parts by weight (dry weight) of aniline-formaldehyde resin and ro parts by weight of phenoplast powder; the whole is dried at a moderate temperature and finally at 16; up to 175 'and with about 300 to 5oo kg / (1 cm pressure.

In gleicher Weise kann tnan auch Mischkondensationsprodukte aus Anilin und Phenol oder Kresol und Form,aldiehyd verNvenden.In the same way, mixed condensation products from aniline can also be used and phenol or cresol and form, aldiehyduse.

Die dunkelbraunen oder entsprechend gefärbten Preßlinge lassen sich hei Preßtemheratur aus der Form nehmen; sie zeigen neben guten mechanischen Festigkeiten nur sehr geringe Wasseraufnabme und lassen sich mit spangnebend,en Werkzeugen noch gut bearbeiten.The dark brown or appropriately colored compacts can take out of the mold at hot press temperature; they show good mechanical strengths only very little water absorption and can still be removed with cutting tools edit well.

Claims (1)

PATENTANSPRUCH: Preßmassen, im wesentlichen bestehend aus Braunschliff und .Anilin-Formaldehyd-Kondensationsprodukten neben geringen Zusätzen härtbarer Kunstharze oder von Mischkondensationsprodukten aus den .lusgatigsstoffen für diese Bindemittel. Angezogene Druckschriften: Deutsche Patentschrift Nr. 740 2o7-PATENT CLAIM: molding compounds, essentially consisting of brown grinding and .aniline-formaldehyde condensation products in addition to small additions of curable ones Synthetic resins or mixed condensation products from the .lusgatigsstoffe for these Binder. Referred publications: German Patent No. 740 2o7-
DEP1051D 1945-03-07 1945-03-07 Molding compounds Expired DE847492C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP1051D DE847492C (en) 1945-03-07 1945-03-07 Molding compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1051D DE847492C (en) 1945-03-07 1945-03-07 Molding compounds

Publications (1)

Publication Number Publication Date
DE847492C true DE847492C (en) 1952-08-25

Family

ID=7357017

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP1051D Expired DE847492C (en) 1945-03-07 1945-03-07 Molding compounds

Country Status (1)

Country Link
DE (1) DE847492C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006149B (en) * 1954-08-14 1957-04-11 Basf Ag Process for the production of molded synthetic resin lightweight materials from crushed synthetic resin foam

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746207C (en) * 1939-01-24 1944-06-05 Rathgeber Karl Footrest made of compressed fibers impregnated with a thermoplastic synthetic resin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746207C (en) * 1939-01-24 1944-06-05 Rathgeber Karl Footrest made of compressed fibers impregnated with a thermoplastic synthetic resin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006149B (en) * 1954-08-14 1957-04-11 Basf Ag Process for the production of molded synthetic resin lightweight materials from crushed synthetic resin foam

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