DE906996C - Low-resin synthetic resin molding compound - Google Patents

Low-resin synthetic resin molding compound

Info

Publication number
DE906996C
DE906996C DEA7779D DEA0007779D DE906996C DE 906996 C DE906996 C DE 906996C DE A7779 D DEA7779 D DE A7779D DE A0007779 D DEA0007779 D DE A0007779D DE 906996 C DE906996 C DE 906996C
Authority
DE
Germany
Prior art keywords
resin
low
molding compound
synthetic resin
addition
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
DEA7779D
Other languages
German (de)
Inventor
Dr Anton Neuhaus
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DEA7779D priority Critical patent/DE906996C/en
Application granted granted Critical
Publication of DE906996C publication Critical patent/DE906996C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Harzarme Kunstharzpreßmasse Die bisher für die Herstellung von Preßformkörpern verwendeten Preßmassen, z. B. des Typs S, haben einen Harzgehalt von etwa 40 bis 50'/0. Es hat sich nun die Notwendigkeit ergeben, harzärmere Preßmassen herzustellen. Dabei hat es sich gezeigt, daß derartige harzarme Preßmassen, die nur etwa 2o bis 251119 Harz enthalten, sich nur schwer oder gar nicht mehr verpressen lassen, da die Masse unter der Presse nicht fließt. Außerdem zeigt eine solche Masse ein zu hohes Schüttvolumen, so daß die bisher gebräuchlichen Füllräume der Preßformen nicht ausreichen.Low-resin synthetic resin molding compound The hitherto used for the production of molded articles molding compounds used, e.g. B. of type S, have a resin content of about 40 to 50 '/ 0. The need has now arisen to produce molding compounds with a lower resin content. It has been shown that such low-resin molding compounds that are only about 20 to 251119 contain resin, can only be pressed with difficulty or not at all, because the mass under the press does not flow. In addition, such a mass shows a too high bulk volume, so that the previously common filling spaces of the compression molds are not sufficient.

Es wurde nun gefunden, daß harzarme Preßmassen mit 2o bis 25 0/0 Harzgehalt preßbar werden, wenn ihnen Naphtholpech zugesetzt wird. Gleichzeitig tritt durch diesen Zusatz eine Erniedrigung des Schüttvolumens ein, so daß die bisher üblichen Füllräume ausreichen.It has now been found that low-resin molding compounds with a resin content of 20 to 25% become compressible when naphthol pitch is added to them. At the same time step through this addition a lowering of the bulk volume, so that the usual Sufficient filling spaces.

Der Zusatz kann in weiten Grenzen schwanken; als besonders .geeignet hat sich ein Zusatz von. 50/0, gerechnet auf die fertige Preßmasse, erwiesen. Eine geeignete Füllmasse gemäß der Erfindung wäre z. B. eine solche mit 25'10 Phenolaldehydharz, 5010 Nap.htholpech und 70a/0 Holzmehl.The addition can vary within wide limits; an addition of. 50/0, calculated on the finished molding compound, proved. A suitable filling compound according to the invention would be e.g. B. one with 25'10 phenolaldehyde resin, 5010 Nap.htholpech and 70a / 0 wood flour.

,Die angegebenen Zusammensetzungen beziehen sich auf solche Massen, idie organische Füllstoffe e:nthaIben. Dafür die Füllung der Pressen das Volumen aber ausschlaggebend ist, verändern sich diese Mengenverhältnisse naturgemäß bei Anwendung von anorganischen Füllmassen; beispielsweise enthält eine normale Masse des Typs z i 3o bis 350/0 Harz, so daß die harzarme Masse entsprechend r5 bis i8% enthalten würde, zu der etwa 3 bis 5% Naphtholpech zuzugeben wären., The specified compositions relate to such masses i include organic fillers. For the filling of the presses the volume but the decisive factor is that these proportions naturally change Application of inorganic fillers; for example contains a normal mass of the type z i 3o to 350/0 resin, so that the resin-poor mass corresponding to r5 until i8%, to which about 3 to 5% naphthol pitch would have to be added.

Claims (3)

PATENTANSPRÜCHE: i. Harzarme KunstharzpreBmasse, gekennzeichnet durch einen Zusatz von Naphtholpech. PATENT CLAIMS: i. Low-resin synthetic resin molding compound, characterized by an addition of naphthol pitch. 2. Kunstharzarme Preßmasse mit organischem Füllstoff nach Anspruch i, gekennzeichnet durch einen Zusatz von Naphtholpech von 5%. 2. Low-synthetic resin molding compound with organic filler according to claim i, characterized by an addition of naphthol pitch of 5%. 3. Kunstharzarme Preßmasse mit anorganischem Füllstoff nach Anspruch i, gekennzeichnet durch einen Naphtholpechzusatz von q.0/0.3. Resin arms A molding compound with an inorganic filler according to claim i, characterized by one Naphthol pitch addition of q.0 / 0.
DEA7779D 1943-07-01 1943-07-01 Low-resin synthetic resin molding compound Expired DE906996C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA7779D DE906996C (en) 1943-07-01 1943-07-01 Low-resin synthetic resin molding compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA7779D DE906996C (en) 1943-07-01 1943-07-01 Low-resin synthetic resin molding compound

Publications (1)

Publication Number Publication Date
DE906996C true DE906996C (en) 1954-03-18

Family

ID=6921338

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA7779D Expired DE906996C (en) 1943-07-01 1943-07-01 Low-resin synthetic resin molding compound

Country Status (1)

Country Link
DE (1) DE906996C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116392B (en) * 1957-12-07 1961-11-02 Teerverwertung Mit Beschraenkt Process for the production of water-resistant abrasive tools with improved mechanical properties

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116392B (en) * 1957-12-07 1961-11-02 Teerverwertung Mit Beschraenkt Process for the production of water-resistant abrasive tools with improved mechanical properties

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