DE800704C - Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes - Google Patents

Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes

Info

Publication number
DE800704C
DE800704C DEP12365A DEP0012365A DE800704C DE 800704 C DE800704 C DE 800704C DE P12365 A DEP12365 A DE P12365A DE P0012365 A DEP0012365 A DE P0012365A DE 800704 C DE800704 C DE 800704C
Authority
DE
Germany
Prior art keywords
foam
continuous production
synthetic resins
insulation purposes
solution
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
DEP12365A
Other languages
German (de)
Inventor
Hans Dr Scheuermann
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 DEP12365A priority Critical patent/DE800704C/en
Application granted granted Critical
Publication of DE800704C publication Critical patent/DE800704C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
    • B29B7/7414—Mixing devices specially adapted for foamable substances with supply of gas with rotatable stirrer, e.g. using an intermeshing rotor-stator system
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Description

Es ist bekannt, schaumartige Nassen, insbesondere für Isolierzwecke, durch Verschäumung wäßriger L¢isungen härtbarer Harze, insbesondere von Harnstoff-Formaldehyd-Kondensationsprodukten, kontinuierlich herzustellen, indem man die wäßrige Lösung eines Schaummittels mittels Druckluft verschäumt und diesen Schaum mit dem ebenfalls mittels Druckluft in einem getrennten Gefäß erzeugten Schaum einer Harzlösung vermischt, den Kunstharzschaum in Formen abfüllt und darin aushörtet. Bei diesem Verfahren werden verhältnis mäßig grobporige Schaummassen erhalten, die bei der Verwendung als Isoliermaterial besonders hohen Anforderungen nicht immer genügen. It is known to use foam-like wetness, especially for insulating purposes, resins curable by foaming aqueous solutions, in particular urea-formaldehyde condensation products, continuously produce by the aqueous solution of a foaming agent by means of Compressed air foamed and this foam with the compressed air in one separate vessel produced foam of a resin solution mixed, the synthetic resin foam fills in forms and ends up in them. This procedure will be proportionate coarse-pored foam masses obtained, especially when used as an insulating material not always meet high requirements.

Es wurde nun gefunden, daß man Schaummassen voll gleichmäßig feiner Porosität, die sich hervorragend als Isoliermassen eignen, in kontinuierlicher Arbeitsweise herstellen kann, wenn man in einem Behälter unter starkem Kühren eine wäßrige Lösung eines Schaummittels verschäumt, diesen Schaum in einem zweiten Behälter ebenfalls unter starkem Rühren mit der Lösung eines Kunstharzes, Leimes o. dgl. vermischt und die erhaltenen Schaummassen kontinuierlich austrägt, trocknet und gegebenenfalls härtet. l Hand der Skizze sei eine Ausführungsform des Verfahrens näher erläutert. In einem mit Rührwerk versehenen Gefäß 1 wird unter schnellem Rühren fortlaufend eine etwa 2 0/oige wäßrige Lösung einer Butylnaphthalinsulfonsäure, die durch das Einlaßrohr 2 eingeführt wird, ver-SCh;illl7lt. Diese Lösung kann entweder eingespritzt oder mittels Druckluft, die durch das Rohr 3 einströmen kann, zerstäubt in das Gefäß 1 eingebracht werden. Die in dieses Gefäß mündende Transportschnecke 4 fördert den in dem Gefäß 1 entstandenen und stets sich neubildenden Schaum in einen mit Rührwerk ausgestatteten Kessel 5. Unterwegs wird dabei durch das Einlaßrolir 6 z. B. eine wäßrige Kunstharzlösung, wie die Lösung eines in bekannter Weise hergestellen Kondensationsproduktes aus Harnstoff und Formaldehyd, eingespritzt. In dem Gefäß 5 wird durch starkes Rühren eine innige Durchmischung erzielt. Dabei kijnncn durch den Einfüllstutzen 7 Füll- oder Sttreckmittel organischer oder anorganischer Natur von faseriger oder pulveriger Beschaffenheit, Härtungsbeischleuniger, Farl)-stoffe u. dgl. zugesetzt werden. Der in dem Gefäß 5 gebildete Kunstharzeschaum wird kontinuierlich durch den Auslaß 8 in Formen 9 al>gelassen, anschließend getrocknet und gehärtet. Durch Variierung der Austrittsgeschwindigkeit des Kunstharzschaumes, der Zulaufsgeschwindigkeit der Schaummittellösung und der Kunstharzlösung lassen sich der Gelierzustand der Schaummasse und deren Dichte weitgehend beeinflussen. It has now been found that foam compositions can be made evenly finer Porosity, which are ideally suited as insulating compounds, in a continuous mode of operation can be produced if an aqueous solution is placed in a container with vigorous stirring a foaming agent foamed, this foam in a second container as well mixed with a solution of a synthetic resin, glue or the like while stirring vigorously and continuously discharging, drying and, if appropriate, the foam compositions obtained hardens. One embodiment of the method is explained in more detail using the sketch. In a vessel 1 equipped with a stirrer, the mixture is continuously stirred with rapid stirring an about 2 0 / o aqueous solution of a butylnaphthalenesulfonic acid, which by the Inlet pipe 2 is inserted, ver-SCh; illl7lt. This solution can either be injected or by means of compressed air, which can flow in through the pipe 3, atomized into the vessel 1 are introduced. The feed screw 4 opening into this vessel promotes the In the vessel 1 created and always newly forming foam in one with a stirrer equipped boiler 5. On the way through the inlet roller 6 z. Legs aqueous synthetic resin solution, such as the solution of a condensation product prepared in a known manner made of urea and formaldehyde, injected. In the vessel 5 is stirred vigorously an intimate mixing achieved. Thereby, through the filler neck 7 filler or extenders of an organic or inorganic nature, fibrous or powdery Texture, hardening accelerators, additives and the like can be added. Of the Resin foam formed in the vessel 5 is continuously passed through the outlet 8 left in molds, then dried and hardened. By variation the exit speed of the synthetic resin foam, the inflow speed of the Foam solution and the synthetic resin solution can be the gelling state of the foam mass and largely influence their density.

Das Verfahren eignet sich außer für die Verarbeitung von Lösungen von Harnstoff-Formaldehyd-Kondensationsprodukten beispielsweise auch zur Herstellung von Schaummassen aus Phenolaldehydharzen, tierischen Leimen und ähnlicheii Produkten. The method is also suitable for processing solutions of urea-formaldehyde condensation products, for example, also for the production of foam masses made from phenol aldehyde resins, animal glues and similar products.

Claims (1)

PATENTANSPRUCII: Verfahren zur kontinuierlichen Herstellung von Schaummassen aus Kunstharzen, Leimen u. dgl., dadurch gekennzeichnet, daß man in einem Behälter unter starkem I:iihren eine wäßrige Lösung eines Schaummittels verschäumt, diesen Schaum in einem m z eiten 13ehälter ebenfalls unter starkem Rühren mit der Lösung eines Kunstharzes. Leimes o. dgl. vermischt und die erhaltene Schauminasse kontinuierlich austrägt, trocknet und gegebenenfalls härtet. PATENT CLAIM: Process for the continuous production of foam masses from synthetic resins, glues and the like., characterized in that one in a container under strong I: iihren an aqueous solution of a foaming agent foams this Foam in a second container with the solution, also while stirring vigorously a synthetic resin. Glues or the like mixed and the foam compound obtained continuously discharges, dries and, if necessary, hardens.
DEP12365A 1948-10-02 1948-10-02 Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes Expired DE800704C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP12365A DE800704C (en) 1948-10-02 1948-10-02 Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP12365A DE800704C (en) 1948-10-02 1948-10-02 Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes

Publications (1)

Publication Number Publication Date
DE800704C true DE800704C (en) 1950-11-30

Family

ID=7364027

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP12365A Expired DE800704C (en) 1948-10-02 1948-10-02 Process for the continuous production of foam masses from synthetic resins u. Like. For insulation purposes

Country Status (1)

Country Link
DE (1) DE800704C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1043628B (en) * 1953-08-20 1958-11-13 Wilhelm Bauer Device for the continuous production of synthetic resin foam
DE1139634B (en) * 1959-04-12 1962-11-15 Knud Boegh Device for the production of synthetic resin foam from hardenable synthetic resins by mechanical means
DE1169116B (en) * 1954-08-19 1964-04-30 Schaum Chemie Wilhelm Bauer K Process to provide bodies, structural elements or components with a porous synthetic resin layer
DE1212292B (en) * 1952-07-31 1966-03-10 Lonza Ag Process for the production of cell bodies with closed cells from thermoplastic material
DE1243378B (en) * 1957-02-25 1967-06-29 Forsch Process and device for the continuous production of fine foams
EP0031513A2 (en) * 1979-12-14 1981-07-08 BASF Aktiengesellschaft Elastic foam based on urea-formaldehyde condensation products and process for preparing same
DE3344769A1 (en) * 1982-12-13 1984-06-20 Conwed Corp., St. Paul, Minn. METHOD FOR PRODUCING FIBROUS MOLDED PARTS

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212292B (en) * 1952-07-31 1966-03-10 Lonza Ag Process for the production of cell bodies with closed cells from thermoplastic material
DE1043628B (en) * 1953-08-20 1958-11-13 Wilhelm Bauer Device for the continuous production of synthetic resin foam
DE1169116B (en) * 1954-08-19 1964-04-30 Schaum Chemie Wilhelm Bauer K Process to provide bodies, structural elements or components with a porous synthetic resin layer
DE1243378B (en) * 1957-02-25 1967-06-29 Forsch Process and device for the continuous production of fine foams
DE1139634B (en) * 1959-04-12 1962-11-15 Knud Boegh Device for the production of synthetic resin foam from hardenable synthetic resins by mechanical means
EP0031513A2 (en) * 1979-12-14 1981-07-08 BASF Aktiengesellschaft Elastic foam based on urea-formaldehyde condensation products and process for preparing same
EP0031513A3 (en) * 1979-12-14 1981-08-26 Basf Aktiengesellschaft Elastic foam based on urea-formaldehyde condensation products and process for preparing same
DE3344769A1 (en) * 1982-12-13 1984-06-20 Conwed Corp., St. Paul, Minn. METHOD FOR PRODUCING FIBROUS MOLDED PARTS
US4613627A (en) * 1982-12-13 1986-09-23 Usg Acoustical Products Company Process for the manufacture of shaped fibrous products and the resultant product

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