BE585269A - - Google Patents

Info

Publication number
BE585269A
BE585269A BE585269DA BE585269A BE 585269 A BE585269 A BE 585269A BE 585269D A BE585269D A BE 585269DA BE 585269 A BE585269 A BE 585269A
Authority
BE
Belgium
Prior art keywords
emi
fact
polyethylene
peroxide
blacks
Prior art date
Application number
Other languages
French (fr)
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.)
Publication of BE585269A publication Critical patent/BE585269A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/14Peroxides

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

       

   <EMI ID=1.1> 

  
On connait le moyen de fabriquer en polyéthylene des obj ets .  moulés des genres les plus différents. Pour améliorer la résistan-

  
 <EMI ID=2.1> 

  
de noir de fumée agissent surtout , de façon non désirée , sur les propriétés mécaniques des mélanges . On obtient une matière fragile

  
et cassante.

  
En vue de conserver aux objets , quand on ajoute assez bien

  
de noir de fumée , une flexibilité encore suffisante , il a été suggéré de traiter ces objets par rayons électromagnétiques et

  
 <EMI ID=3.1>   <EMI ID=4.1> 

  
res de réaction neutre à alcaline , par exemple des noirs de fumée

  
 <EMI ID=5.1> 

  
appropriés.

  
On sait enfin que les noirs de fumée à réaction acide ne conviennent pas , en combinaison avec des peroxydes organiques , pour humidifier les polyéthylènes car ils déclenchent un autre mécanisme qui détruit: le peroxyde et l'humidification.

  
On a trouvé, avec étonnèrent, qu'on pouvait obtenir d'excellents résultats en procédant de la manière suivante : on mélange avec un

  
 <EMI ID=6.1> 

  
des mélanges composés essentiellement de polyéthylènes haute pression, on homogénise le mélange , on meule de façon connue et on humidifie pendant ou après le moulage. On désigne par noirs de fumée s. réaction acide ceux dont la suspension aqueuse a une valeur

  
 <EMI ID=7.1> 

  
humidifiant , avec un succès particulier , un peroxyde organique ,  par exemple du peroxyde de dicumyle. L'humidification se fait avec

  
 <EMI ID=8.1> 

  
de 1,5 atmosphère.

  
Le procédé de l'invention permet d'incorporer de grandes quan-

  
 <EMI ID=9.1> 

  
100 parties en poids de polyéthylène , sans que les propriétés mécaniques des objets moulés en souffrent.

  
Le tableau qui suit donne les propriétés de plaques fabriquées selon le procédé de l'invention avec emploi de différents noirs de

  
 <EMI ID=10.1>  

  

 <EMI ID=11.1> 


  
Exemple :

  
 <EMI ID=12.1> 

  
après refroidissement , on retire la masse du mélangeur et on la broie de manière connue.

  
 <EMI ID=13.1> 

  
humidifié et largement insoluble en solvants organiques , même  aux températures d'ébullition . 

  
 <EMI ID=14.1> 

  
moulés en polyéthylène caractérise par le fait qu'on mélange

  
du polyéthylène haute pression ou des mélanges composés essentiellement de polyéthylenes haute pression , avec un noir de fumée

  
 <EMI ID=15.1> 

  
qu'on l'humidifie pendant ou après le moulage.



   <EMI ID = 1.1>

  
We know the means of making polyethylene objects. castings of the most different kinds. To improve resistance

  
 <EMI ID = 2.1>

  
carbon black mainly act, in an unwanted manner, on the mechanical properties of the mixtures. We get a fragile material

  
and brittle.

  
In order to conserve objects, when we add well enough

  
carbon black, still sufficient flexibility, it was suggested to treat these objects by electromagnetic rays and

  
 <EMI ID = 3.1> <EMI ID = 4.1>

  
neutral to alkaline reaction res, for example carbon blacks

  
 <EMI ID = 5.1>

  
appropriate.

  
Finally, we know that acid reaction smoke blacks are not suitable, in combination with organic peroxides, for humidifying polyethylenes because they trigger another mechanism which destroys: peroxide and humidification.

  
It was surprisingly found that excellent results could be obtained by proceeding as follows: mixing with a

  
 <EMI ID = 6.1>

  
mixtures composed essentially of high pressure polyethylenes, the mixture is homogenized, grinded in a known manner and moistened during or after molding. We denote by smoke blacks. acid reaction those whose aqueous suspension has a value

  
 <EMI ID = 7.1>

  
humidifying, with particular success, an organic peroxide, for example dicumyl peroxide. Humidification is done with

  
 <EMI ID = 8.1>

  
of 1.5 atmospheres.

  
The process of the invention makes it possible to incorporate large quantities

  
 <EMI ID = 9.1>

  
100 parts by weight of polyethylene, without the mechanical properties of the molded articles being adversely affected.

  
The following table gives the properties of plates manufactured according to the process of the invention with the use of different blacks of

  
 <EMI ID = 10.1>

  

 <EMI ID = 11.1>


  
Example:

  
 <EMI ID = 12.1>

  
after cooling, the mass is removed from the mixer and ground in a known manner.

  
 <EMI ID = 13.1>

  
moistened and largely insoluble in organic solvents, even at boiling temperatures.

  
 <EMI ID = 14.1>

  
molded in polyethylene characterized by the fact that

  
high pressure polyethylene or mixtures composed mainly of high pressure polyethylenes, with a lamp black

  
 <EMI ID = 15.1>

  
moisten it during or after molding.


    

Claims (1)

3) Procéda suivant revendication I , caractérisa par le fait <EMI ID=16.1> 3) Process according to claim I, characterized by the fact <EMI ID = 16.1> fait qu'on emploie Un noir de fumée dont la dispersion aqueuse a makes use of a carbon black whose aqueous dispersion has <EMI ID=17.1> <EMI ID = 17.1> par le fait qu'on emploie cornue humidifiant un peroxyde organique , de préférence du peroxyde de dicumyle. by the fact that an organic peroxide, preferably dicumyl peroxide, is used as a humidifying retort. <EMI ID=18.1> <EMI ID = 18.1>
BE585269D 1958-12-17 BE585269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0029602 1958-12-17

Publications (1)

Publication Number Publication Date
BE585269A true BE585269A (en)

Family

ID=7040154

Family Applications (1)

Application Number Title Priority Date Filing Date
BE585269D BE585269A (en) 1958-12-17

Country Status (4)

Country Link
BE (1) BE585269A (en)
CH (1) CH378039A (en)
FR (1) FR1242223A (en)
NL (2) NL113083C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402976B2 (en) * 1974-01-22 1977-12-29 Ets. Paturle S.A, St-Laurent-du-Pont (Frankreich) CONSTRUCTION MATERIAL AND METHOD FOR ITS MANUFACTURING
US4808442A (en) * 1986-01-23 1989-02-28 Akzo Nv Composition suitable for use in polymer cross-linking processes

Also Published As

Publication number Publication date
NL113083C (en)
NL246486A (en)
FR1242223A (en) 1960-09-23
CH378039A (en) 1964-05-31

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