AT255129B - Molding compound for the production of shaped structures - Google Patents

Molding compound for the production of shaped structures

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Publication number
AT255129B
AT255129B AT9565A AT9565A AT255129B AT 255129 B AT255129 B AT 255129B AT 9565 A AT9565 A AT 9565A AT 9565 A AT9565 A AT 9565A AT 255129 B AT255129 B AT 255129B
Authority
AT
Austria
Prior art keywords
sep
shaped structures
production
molding compound
processing
Prior art date
Application number
AT9565A
Other languages
German (de)
Original Assignee
Dynamit Nobel 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 Dynamit Nobel Ag filed Critical Dynamit Nobel Ag
Application granted granted Critical
Publication of AT255129B publication Critical patent/AT255129B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
    • C08F14/02—Monomers containing chlorine
    • C08F14/04—Monomers containing two carbon atoms
    • C08F14/06—Vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/18—Introducing halogen atoms or halogen-containing groups
    • C08F8/20—Halogenation
    • C08F8/22—Halogenation by reaction with free halogens
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/22—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L27/24—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Formmasse zur Herstellung von geformten Gebilden 
Bei der thermoplastischen Verarbeitung von nachchlorierten Polyvinylchlorid treten auf Grund der erhöhten Erweichungstemperatur bzw. der erhöhten Schmelzviskosität sowohl materialmässig als auch apparativ bedingte Schwierigkeiten auf, besonders bei den technisch interessanten Einstellungen, die einen Einsatz bis   IOOOC   zulassen. Die bei der Verarbeitung derartiger thermoplastischer Massen zwangsläufig erforderlichen höheren Verarbeitungstemperaturen bewirken trotz hoher   StabilisatorzusätzeVerfär-   bungen und Versprödungen,   d. h.   einen teilweisen Abbau bei der Verarbeitung zu geformten Gebilden, wie Walzfellen, Platten, Profilen, Rohren od. dgl. Beim Spritzguss derartiger Massen kann es sogar zu momentanen Zersetzungen unter Druck- und Gasentwicklung kommen.

   Zusätze von Verarbeitungshilfen, wie z. B. Gleitmitteln, erleichtern zwar die Verarbeitung etwas, aber sie wirken sich negativ auf die mechanischen Eigenschaften der Erzeugnisse aus. 



   Die apparativen Verarbeitungsschwierigkeiten bestehen darin, dass die   üblichen Verarbeitungsmaschi-   nen installationsmässig und konstruktiv für normales Polyvinylchlorid ausgelegt sind und daher die für die Verarbeitung von nachchloriertem Polyvinylchlorid erforderlichen Temperaturen, Achslagerdrucke und Förderleistungen nicht erreichen. 



   Gegenstand der Erfindung ist nun eine Formmasse zur Herstellung von geformten Gebilden, bestehend aus einem Gemisch von nachchlorierten Polyvinylchloriden mit einem heterogen eingestellten Chlorge- 
 EMI1.1 
 Polyvinylchlorid mit verschiedenem Nachchlorierungsgrad bestehenden Mischungskomponenten werden z. B. unter Mitverwendung von Chloroform bzw. Tetrachlorkohlenstoff als Quellmittel in wässeriger Phase durch Einleiten von Chlor unter Bestrahlung mit handelsüblichen   UV-Lampen   hergestellt. Als Ausgangsprodukt wird Suspensions-Polyvinylchlorid verwendet. 



   Überraschenderweise wurde gefunden, dass durch die gemäss der Erfindung hergestellten Formmassen die oben erwähnten Nachteile vermieden werden. 



   Die in nachfolgenden Beispielen beschriebenen Mischungen sind auf eine einheitliche Formbeständigkeit in der Wärme nach Vicat von 1200C eingestellt. Zur Ausschaltung von den einen verarbeitungsmässigen Vergleich störenden maschinell bedingten Einflüssen, wurden die Komponenten zusammen mit den aus   10   Ca-Stearat und Wo Ba-Cd-Laurat bestehenden Verarbeitungshilfsstoffen intensiv vorgemischt und auf einem Walzwerk zu Walzfellen in gleicher Dicke und Abzugsgeschwindigkeit ausgezogen. 



   Die Walztemperatur betrug 170OC, die Walzzeit 2 min. Die Ermittlung der Schrumpfwerte erfolgte in Walzrichtung an Walzfellen von ursprünglich 500 mm Länge nach 20 min Warmlagerung im Trockenschrank bei 170 C. 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 
<tb> 
<tb> 



  Beispiel <SEP> 1 <SEP> Beispiel <SEP> 2 <SEP> Beispiel <SEP> 3 <SEP> Beispiel <SEP> 4
<tb> A <SEP> (68, <SEP> 8% <SEP> Cl) <SEP> (68, <SEP> 8% <SEP> C1) <SEP> (68, <SEP> 81o <SEP> C1)
<tb> 85% <SEP> 70% <SEP> 17,5%
<tb> B <SEP> (56, <SEP> 7% <SEP> C1)
<tb> 15%
<tb> C <SEP> - <SEP> (62, <SEP> 5% <SEP> Cl) <SEP> (62, <SEP> 5% <SEP> C1)
<tb> 30% <SEP> 17, <SEP> 5%
<tb> D <SEP> - <SEP> - <SEP> (65, <SEP> 9% <SEP> Cl) <SEP> (65, <SEP> 9% <SEP> Cl)
<tb> 65% <SEP> 100%
<tb> Vicat <SEP> 120, <SEP> 5 C <SEP> 121, <SEP> 0 C <SEP> 120, <SEP> 0c1C <SEP> 119, <SEP> 5 C
<tb> Schrump- <SEP> 16,2% <SEP> 12,1% <SEP> 30, <SEP> 7% <SEP> 40, <SEP> 4%
<tb> fung
<tb> Ober- <SEP> rauh <SEP> glatt <SEP> rauh <SEP> sehr <SEP> rauh
<tb> fläche
<tb> 
 
Wie aus den Beispielen 1-3 ersichtlich ist, ergeben Mischungen von Polyvinylchlorid mit verschiedenem Nachchlorierungsgrad glattere,

   schrumpf-und spannungsfreiere Walzfelle als Polyvinylchlorid mit einem einheitlichen Nachchlorierungsgrad.



   <Desc / Clms Page number 1>
 



  Molding compound for the production of shaped structures
In the thermoplastic processing of post-chlorinated polyvinyl chloride, difficulties arise both in terms of material and apparatus due to the increased softening temperature and the increased melt viscosity, especially with the technically interesting settings which allow use up to 100OC. The higher processing temperatures that are inevitably required when processing such thermoplastic compositions cause discoloration and embrittlement, despite the high addition of stabilizers. H. partial degradation during processing into shaped structures, such as rolled sheets, plates, profiles, pipes or the like. In the injection molding of such masses, there may even be momentary decomposition with the development of pressure and gas.

   Additions of processing aids, such as. B. lubricants make processing a little easier, but they have a negative effect on the mechanical properties of the products.



   The apparatus-related processing difficulties are that the usual processing machines are designed for normal polyvinyl chloride in terms of installation and construction and therefore do not achieve the temperatures, axle bearing pressures and conveying capacities required for processing post-chlorinated polyvinyl chloride.



   The invention now relates to a molding compound for the production of shaped structures, consisting of a mixture of post-chlorinated polyvinyl chlorides with a heterogeneously adjusted chlorine
 EMI1.1
 Polyvinyl chloride with different degrees of post-chlorination existing mixture components are z. B. produced using chloroform or carbon tetrachloride as swelling agent in the aqueous phase by introducing chlorine under irradiation with commercially available UV lamps. Suspension polyvinyl chloride is used as the starting product.



   Surprisingly, it has been found that the above-mentioned disadvantages are avoided by the molding compositions produced according to the invention.



   The mixtures described in the following examples are adjusted to a uniform dimensional stability under Vicat heat of 1200C. In order to eliminate the machine-related influences that interfere with a processing comparison, the components were intensively premixed together with the processing aids consisting of 10 Ca stearate and Wo Ba-Cd laurate and pulled out on a rolling mill to form rolled sheets of the same thickness and take-off speed.



   The rolling temperature was 170 ° C and the rolling time was 2 minutes. The determination of the shrinkage values was carried out in the rolling direction on rolled sheets originally 500 mm long after 20 minutes of hot storage in a drying cabinet at 170 C.

 <Desc / Clms Page number 2>

 
 EMI2.1
 
<tb>
<tb>



  Example <SEP> 1 <SEP> Example <SEP> 2 <SEP> Example <SEP> 3 <SEP> Example <SEP> 4
<tb> A <SEP> (68, <SEP> 8% <SEP> Cl) <SEP> (68, <SEP> 8% <SEP> C1) <SEP> (68, <SEP> 81o <SEP> C1 )
<tb> 85% <SEP> 70% <SEP> 17.5%
<tb> B <SEP> (56, <SEP> 7% <SEP> C1)
<tb> 15%
<tb> C <SEP> - <SEP> (62, <SEP> 5% <SEP> Cl) <SEP> (62, <SEP> 5% <SEP> C1)
<tb> 30% <SEP> 17, <SEP> 5%
<tb> D <SEP> - <SEP> - <SEP> (65, <SEP> 9% <SEP> Cl) <SEP> (65, <SEP> 9% <SEP> Cl)
<tb> 65% <SEP> 100%
<tb> Vicat <SEP> 120, <SEP> 5 C <SEP> 121, <SEP> 0 C <SEP> 120, <SEP> 0c1C <SEP> 119, <SEP> 5 C
<tb> Shrinkage <SEP> 16.2% <SEP> 12.1% <SEP> 30, <SEP> 7% <SEP> 40, <SEP> 4%
<tb> fung
<tb> Upper <SEP> rough <SEP> smooth <SEP> rough <SEP> very <SEP> rough
<tb> area
<tb>
 
As can be seen from Examples 1-3, mixtures of polyvinyl chloride with different degrees of post-chlorination result in smoother,

   Shrinkage and tension-free rolled sheets as polyvinyl chloride with a uniform degree of post-chlorination.

Claims (1)

PATENTANSPRUCH : Formmasse zur Herstellung von geformten Gebilden, bestehend aus einem Gemisch von nachchlorierten Polyvinylchloriden mit einem heterogen eingestellten Chlorgehalt, dessen Mittelwert zwischen etwa 60-etwa 70% liegt und aus einer etwa 5-50% gen Mischung von zwei oder mehr Komponenten mit jeweils verschiedenem Chlorgehalt besteht, der sich vom mittleren Chlorgehalt der Mischung um einen Betrag von t l : 0. 5 bis 14% unterscheidet. PATENT CLAIM: Molding compound for the production of shaped structures, consisting of a mixture of post-chlorinated polyvinyl chlorides with a heterogeneously adjusted chlorine content, the mean value of which is between about 60-about 70% and a mixture of about 5-50% of two or more components, each with a different chlorine content , which differs from the mean chlorine content of the mixture by an amount of tl: 0.5 to 14%.
AT9565A 1964-01-10 1965-01-08 Molding compound for the production of shaped structures AT255129B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0043321 1964-01-10

Publications (1)

Publication Number Publication Date
AT255129B true AT255129B (en) 1967-06-26

Family

ID=7047486

Family Applications (1)

Application Number Title Priority Date Filing Date
AT9565A AT255129B (en) 1964-01-10 1965-01-08 Molding compound for the production of shaped structures

Country Status (1)

Country Link
AT (1) AT255129B (en)

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