DE967246C - Process for the production of plastics for electrotechnical purposes - Google Patents

Process for the production of plastics for electrotechnical purposes

Info

Publication number
DE967246C
DE967246C DES28060A DES0028060A DE967246C DE 967246 C DE967246 C DE 967246C DE S28060 A DES28060 A DE S28060A DE S0028060 A DES0028060 A DE S0028060A DE 967246 C DE967246 C DE 967246C
Authority
DE
Germany
Prior art keywords
plastics
production
ester
orthosilicic acid
electrotechnical purposes
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
DES28060A
Other languages
German (de)
Inventor
Dipl-Chem Dr Fritz Weigel
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES28060A priority Critical patent/DE967246C/en
Application granted granted Critical
Publication of DE967246C publication Critical patent/DE967246C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Description

Verfahren zur Herstellung von Kunststoffen für elektrotechnische Zwecke Als Kunststoffe für elektrotechnische Zwecke, wie Anstrichlacke, Drahtlacke, Imprägnierlacke usw., haben sich Polyvinylacetale günstig erwiesen. Sie zeigen gute mechanische und elektrische Eigenschaften, sind aber für bestimmte Zwecke nicht genügend hitzebeständig. Die, Erfindung hat die Aufgabe, unter Beibehaltung der günstigen Eigenschaften die Wärmebeständigkeit zu erhöhen.Process for the production of plastics for electrotechnical purposes As plastics for electrotechnical purposes, such as paint varnishes, wire varnishes, impregnation varnishes etc., polyvinyl acetals have proven beneficial. They show good mechanical and electrical properties, but are not sufficiently heat-resistant for certain purposes. The invention has the object, while maintaining the favorable properties Increase heat resistance.

Erfindungsgemäß werden Reaktionsprodukte aus Polyvinylalkoholen und Aldehyden mit aromatischen Orthokieselsäureestern zur Umsetzwng gebracht. Als aromatische Orthokieselsäureester verwendet man am besten Phenyl- oder Kresylester. Da z. B. Polyvinylformale an sich schon temperaturbeständiger sind als Polyvinylacetale, -butyrale usw., wird man als Reaktionsprodukt für die Verarbeitung Polyvinylformal bevorzugen.According to the invention, reaction products of polyvinyl alcohols and Aldehydes brought to the reaction with aromatic orthosilicic acid esters. As aromatic Orthosilicic acid esters are best used with phenyl or cresyl esters. Since z. B. Polyvinyl formals are inherently more temperature resistant than polyvinyl acetals, -butyrals, etc., is used as a reaction product for processing polyvinyl formal prefer.

Beispiel 6oo g Polyvinylformal werden in 6oo g Cyclohexanon gelöst und zu einer 40"/Gig--n Lösung von Orthokieselsäurekresylester ebenfalls in Cyclohexanon gegeben. Die Verarbeitung erfolgt in der üblichen Weise wie bei Polyvinylacetalen oder deren Kombinantion mit Phenolharzen, d. h. unter Zusatz von Lösungsmitteln, anschließendem Abdampfen des Lösungsmittels und Aushärten bei höheren Temperaturen. Durch Änderung des Mischungsverhältnisses von dem genannten Reaktionsprodukt und Kieselsäureestern kann der Charakter des Endproduktes weitgehend gesteuert werden. Bei höherem Kieselsäureesterzusatz ergeben sich härtere Stoffe, bei geringem mehr elastische und thermoplastische Stoffe.Example 600 g of polyvinyl formal are dissolved in 600 g of cyclohexanone and to a 40 "/ gig-n solution of cresyl orthosilicate, likewise in cyclohexanone given. Processing is carried out in the usual way as with polyvinyl acetals or their combination with phenolic resins, d. H. with the addition of solvents, subsequent evaporation of the solvent and curing at higher temperatures. By changing the Mixing ratio of the reaction product mentioned and silicic acid esters, the character of the end product can be largely controlled. A higher amount of silicic acid ester results in harder substances, with a lower amount more elastic and thermoplastic fabrics.

Claims (5)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Kunststoffen für elektrotechnische Zwecke, dadurch gekennzeichnet, daß Reaktionsprodukte aus Polyvinylalkoholen und Aldehyden mit aromatischen Orthokfeselsäureestern zur Umsetzung gebracht werden. PATENT CLAIMS: i. Process for the production of plastics for electrotechnical purposes, characterized in that reaction products of polyvinyl alcohols and aldehydes are reacted with aromatic orthoselic acid esters. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als Reaktionsprodukt Polyvinylformal verwendet wird. 2. The method according to claim i, characterized in that the reaction product Polyvinyl formal is used. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als Orthoester Orthokieselsäurephenylester verwendet wird. 3. The method according to claim i, characterized in that that orthosilicic acid phenyl ester is used as the ortho ester. 4. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als Orthoester Orthokieselsäurekresylester verwendet wird. 4. Procedure according to Claim i, characterized in that the orthosilicic acid cresyl ester is used as the ortho ester is used. 5. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als Orthoester halogenierte Orthokieselsäurephenylester verwendet werden. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 659 814, 698 389, 701 503; USA.-Patentschriften Nr. 2 404 426, 2 432 113, 231789i; ,)Metalloberfläche«, Ausgabe A, 3. Jahrgang (i949), Heft 8, S. A 156 ff., insbesondere S. 16o, rechte Spalte.5. The method according to claim i, characterized in that halogenated orthosilicic acid phenyl esters are used as orthoesters. Considered publications: German Patent Nos. 659 814, 698 389, 701 503; U.S. Patent Nos. 2,404,426, 2,432 1 1 3, 231789i; ,) Metalloberfläche «, edition A, 3rd year (1949), issue 8, p. A 156 ff., Especially p. 16o, right column.
DES28060A 1952-04-10 1952-04-10 Process for the production of plastics for electrotechnical purposes Expired DE967246C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES28060A DE967246C (en) 1952-04-10 1952-04-10 Process for the production of plastics for electrotechnical purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES28060A DE967246C (en) 1952-04-10 1952-04-10 Process for the production of plastics for electrotechnical purposes

Publications (1)

Publication Number Publication Date
DE967246C true DE967246C (en) 1957-10-24

Family

ID=7479326

Family Applications (1)

Application Number Title Priority Date Filing Date
DES28060A Expired DE967246C (en) 1952-04-10 1952-04-10 Process for the production of plastics for electrotechnical purposes

Country Status (1)

Country Link
DE (1) DE967246C (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE659814C (en) * 1934-12-02 1938-05-11 Hermann Staudinger Dr Process for the production of adhesives and putties
DE698389C (en) * 1939-06-20 1940-11-08 F Raschig G M B H Dr
DE701503C (en) * 1934-12-02 1941-01-17 Hermann Staudinger Dr Process for the production of shatterproof glass
US2317891A (en) * 1939-06-09 1943-04-27 Pittsburgh Plate Glass Co Waterproof adhesive composition
US2404426A (en) * 1946-07-23 Surface chabacteeibtics of solid
US2432113A (en) * 1942-04-21 1947-12-09 Marks Method of impregnating a polyvinyl polarizing sheet with tetraethyl ortho silicate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2404426A (en) * 1946-07-23 Surface chabacteeibtics of solid
DE659814C (en) * 1934-12-02 1938-05-11 Hermann Staudinger Dr Process for the production of adhesives and putties
DE701503C (en) * 1934-12-02 1941-01-17 Hermann Staudinger Dr Process for the production of shatterproof glass
US2317891A (en) * 1939-06-09 1943-04-27 Pittsburgh Plate Glass Co Waterproof adhesive composition
DE698389C (en) * 1939-06-20 1940-11-08 F Raschig G M B H Dr
US2432113A (en) * 1942-04-21 1947-12-09 Marks Method of impregnating a polyvinyl polarizing sheet with tetraethyl ortho silicate

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