DE540552C - Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren - Google Patents

Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren

Info

Publication number
DE540552C
DE540552C DED57790D DED0057790D DE540552C DE 540552 C DE540552 C DE 540552C DE D57790 D DED57790 D DE D57790D DE D0057790 D DED0057790 D DE D0057790D DE 540552 C DE540552 C DE 540552C
Authority
DE
Germany
Prior art keywords
synthetic resins
production
hren
sprití
molded parts
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
DED57790D
Other languages
German (de)
Inventor
Dipl-Ing F Posner
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.)
LEGRIT CARL LINDSTRO GmbH
Original Assignee
LEGRIT CARL LINDSTRO 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 LEGRIT CARL LINDSTRO GmbH filed Critical LEGRIT CARL LINDSTRO GmbH
Priority to DED57790D priority Critical patent/DE540552C/en
Priority to DED60581D priority patent/DE557686C/en
Priority to DED60968D priority patent/DE617072C/en
Application granted granted Critical
Publication of DE540552C publication Critical patent/DE540552C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2357/00Characterised by the use of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Verfahren zur Herstellung von Formstücken aus Kunstharzen nach demH@#*@-@°@°hren" Es ist bekannt, im Wege der dem Metall-_@i,ritzgußverfahren naehgebildeten Methode Formstücke zu spritzen, welche im steigenden :A4aße an Stelle von Celluloid, Hartkautschuk. Process for the production of molded parts from synthetic resins according to the H @ # * @ - @ ° @ ° hren " It is known, by way of the metal -_ @ i, scribing process, to inject molded pieces, which in increasing: A4aße instead of celluloid, hard rubber.

dgl. in der Elektrotechnik für Isolierzwecke Verwendung finden. Als spritzfähiges, thermoplastisches Gut werden bei dieser Niethode gegenwärtig ausschließlich Massen %-er wendet, denen gelatinierte Cellulosederiväte in Form ihrer Ester zugrunde liegen. Diese Derivate stellen hochwertige Erzeugnisse dar. Ein Ersatz derselben durch wohlfeilere Produkte ist zwar angestrebt worden, hat bis jetzt jedo.li zu keinem brauchbaren Ergebnis geführt.Like. Find use in electrical engineering for insulation purposes. as Injectable, thermoplastic material is currently used exclusively with this riveting method Mass% -er applies, which are based on gelatinized cellulose derivatives in the form of their esters lie. These derivatives represent high quality products. A replacement for the same Although the aim was to use cheaper products, but so far but has closed resulted in no useful result.

Es wurde nun die überraschende Feststellung gemacht, daß Vinylverbindungen im pöiynierisierten Zustande, z. B. Pol_r'v iny I-acetat, Polyvinylbenzol (Polystyrol) u. dgl. im hohen Maße geeignet sind, die Cellulosederivate zu ersetzen, sofern sie thermoplastische Eigenschaften besitzen. Sie vermögen sich nicht nur den besonderen Eigenarten der Spritzmethode gut anzupassen, sondern ergeben auch Formstücke, welche hinsichtlich Isolierfähigkeit, Elastizität und Härte den Anforderungen, die an Ersatzstoffe für Celluloid. Hartkautschuk, Kunsthorn u. dgl. gestellt «-erden, durchaus genügen. Es gelingt, aus diesen Poly viny lverbindungen Formstücke von wasserheller Transparenz zu erzielen, die überdies beispielsweise bei Verwendung von Produkten vom Charakter der unter dem Namen Mowilith bekannten Polyvinylester absolut lichtecht sind und selbst bei längerer Einwirkung ultravioletter Strahlen nicht vergilben. Aber nicht nur durch diese bemerkenswerten Eigenschaften unterscheiden sich diese Polyvinylverbindungen vorteilhaft von den spritzfähigen Derivaten der Ceflulose, sondern auch durch größere Wohlfeilheit und geringere Entflammbarkeit, woraus sich neue Verwendungsmöglichkeiten ergeben.The surprising discovery has now been made that vinyl compounds in the pöiynierized state, e.g. B. Pol_r'v iny I-acetate, polyvinylbenzene (polystyrene) and the like are highly suitable to replace the cellulose derivatives, provided that they have thermoplastic properties. You are not only capable of the special one Peculiarities of the spraying method adapt well, but also result in fittings, which In terms of insulation, elasticity and hardness, the requirements placed on substitutes for celluloid. Hard rubber, artificial horn and the like placed «-ground, quite sufficient. It is possible to use these polyvinyl compounds to produce molded pieces of water-clear transparency to achieve that, moreover, for example when using products of character the polyvinyl esters known under the name Mowilith are absolutely lightfast and does not yellow even with prolonged exposure to ultraviolet rays. But not These polyvinyl compounds differ only in these remarkable properties advantageous from the injectable derivatives of ceflulose, but also from larger ones Cheaper and lower flammability, resulting in new uses result.

Die Erkenntnis der Verwendbarkeit von Polyvinylverbindungen im Sinne des vorliegenden Verfahrens ist überraschend und war nicht vorauszusehen, da diese Verbindungen bislang fast ausschließlich als Kunstharze in der Lack- und Klebstoffabrikation Verwendung gefunden haben und andere bekannte Kunstharze als solche nicht spritzfähig sind. Wohl wird in der Patentliteratur gelegentlich auf die Preßfähigkeit bestimmter Polyvinylverbindungen hingewiesen, aber aus der Tatsache der Preßfähigkeit allein konnte keineswegs auf die Fähigkeit dieser Stoffe, sich den Eigenarten der Spritzmethode 4npassen zu können, geschlossen werden.The realization of the usefulness of polyvinyl compounds in the sense of the present process is surprising and was unforeseeable as this So far, compounds have been used almost exclusively as synthetic resins in paint and adhesive manufacture Have found use and other known synthetic resins are not sprayable as such are. In the patent literature, it is true that the compressibility is occasionally determined Polyvinyl compounds pointed out, but from the fact of the compressibility alone could in no way affect the ability of these substances to reflect the peculiarities of the spraying method 4nat to be able to be closed.

Soweit es sich um die Herstellung ungefärbter transparenter Formstücke handelt, können die Polyvinylverbindungen im allgemeinen ohne Vorbehandlung und ohne weitere Zusätze direkt dem Spritzprozcß unterworfen werden. Meist jedoch wird der Verwendungszweck der fertigen Teile Zusätze von Farb- und Füllstoffen sowie anderer bekannter Stoffe aller Art. beispielsweise Polyvinylalkohol, Phenolformaldeliydharze, Weichmachungsmittel u. dgl., welche geeignet sind, die physikalischen Eigenschaften des Materials zu beeinflussen, bedingen. Solche Beimengungen können in üblicher Weise entweder in einem Knetapparat unter Verwendung leicht flüchtiger Lösemittel, welche nach erfolgter Homogenisierung restlos zu beseitigen sind, oder aber unter Ausschluß von Lösungsmitteln mittels heißer Walzen erfolgen. Au sfiihtungsbeisp-iel ioo Teile in Methylenchlorid gelöster Polvvinylester werden im Knetapparat unter Zusatz von Farbstoff und 6o Teilen Füllmasse bis zur Homogenität verarbeitet. Nach möglichst vollkommenem Abdunsten des verwendeten Lösungsmittels wird die Masse dünn ausgewalzt und getrocknet, bis der Rest des Lösungsmittels verdampft ist. Das so erhaltene Produkt wird nach dein I?rkalteri zerkleinert und dann in üblicher Weise auf Formstücke verspritzt.As far as the manufacture of uncolored more transparent In general, the polyvinyl compounds can be used without pretreatment and can be directly subjected to the injection process without further additives. Most of the time, however the intended use of the finished parts will be additions of dyes and fillers as well other known substances of all kinds, for example polyvinyl alcohol, phenol formaldelium resins, Plasticizers and the like which are appropriate to the physical properties to influence the material. Such admixtures can be used in the usual Either in a kneading machine using volatile solvents, which are to be completely eliminated after homogenization, or under Solvents are excluded by means of hot rollers. Design example 100 parts of polyvinyl ester dissolved in methylene chloride are placed in a kneader Addition of dye and 60 parts of filling compound processed to homogeneity. To If the solvent used has evaporated as completely as possible, the mass becomes thin rolled out and dried until the remainder of the solvent has evaporated. That so The product obtained is crushed after your cold and then in the usual way sprayed onto fittings.

Einfacher und zweckmäßiger kann im allgemeinen auch so verfahren werden, daß obige Polyvinvlverbindungen im nichtgelösten Zustande mittels heißer Walzen (ion bis i30°) gegebenenfalls unter Zusatz von Farb-, Füllstoffen u. dgi. zu homogenen Produkten verarbeitet werden.In general, it is easier and more expedient to proceed as follows: that the above polyvinyl compounds in the undissolved state by means of hot rollers (ion to i30 °), if necessary with the addition of dyes, fillers and the like. too homogeneous Products are processed.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von FGrüt- stücken aus Kunstharzern nach @ler:@ »Spritzverfahren ", dadurcligekerivzeicl.ne;. <laß als spritzfähiges Gut tlierniopla.stis,:li,#, polymere Vinylverhindtnngen ohne oder finit Zusatzstoffen verwendet werden.
PATENT CLAIM: Process for the production of FGrüt- pieces made of synthetic resins according to @ler: @ "Spray process", dadurcligekerivzeicl.ne ;. <let tlierniopla.stis,: li, #, polymeric vinyl barriers without or finite additives are used.
DED57790D 1929-02-23 1929-02-23 Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren Expired DE540552C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DED57790D DE540552C (en) 1929-02-23 1929-02-23 Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren
DED60581D DE557686C (en) 1929-02-23 1931-03-07 Process for the production of molded parts from synthetic resins by the injection molding process
DED60968D DE617072C (en) 1929-02-23 1931-04-21 Process for the production of molded parts from synthetic resins by the injection molding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED57790D DE540552C (en) 1929-02-23 1929-02-23 Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren

Publications (1)

Publication Number Publication Date
DE540552C true DE540552C (en) 1931-12-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DED57790D Expired DE540552C (en) 1929-02-23 1929-02-23 Process for the production of molded parts from synthetic resins after Sprití¡ í¡hren

Country Status (1)

Country Link
DE (1) DE540552C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943257C (en) * 1936-04-29 1956-05-17 Ici Ltd Process for the production of films, coverings, strips, tapes and the like. like
DE945868C (en) * 1938-07-17 1956-07-19 Ici Ltd Process for the production of molded articles from solid ethylene polymers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943257C (en) * 1936-04-29 1956-05-17 Ici Ltd Process for the production of films, coverings, strips, tapes and the like. like
DE945868C (en) * 1938-07-17 1956-07-19 Ici Ltd Process for the production of molded articles from solid ethylene polymers

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