DE745084C - Process for converting dioxodisiloxane into the hydrophilic state - Google Patents

Process for converting dioxodisiloxane into the hydrophilic state

Info

Publication number
DE745084C
DE745084C DEC57698D DEC0057698D DE745084C DE 745084 C DE745084 C DE 745084C DE C57698 D DEC57698 D DE C57698D DE C0057698 D DEC0057698 D DE C0057698D DE 745084 C DE745084 C DE 745084C
Authority
DE
Germany
Prior art keywords
dioxodisiloxane
water
converting
hydrophilic state
dry
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
DEC57698D
Other languages
German (de)
Inventor
Dr Max Kahlert
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.)
Chemische Fabrik Von Heyden AG
Original Assignee
Chemische Fabrik Von Heyden 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 Chemische Fabrik Von Heyden AG filed Critical Chemische Fabrik Von Heyden AG
Priority to DEC57698D priority Critical patent/DE745084C/en
Application granted granted Critical
Publication of DE745084C publication Critical patent/DE745084C/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
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Saccharide Compounds (AREA)

Description

Verfahren zur Überführung von Dioxodisiloxan in den hydrophilen Zustand Bei der Einwirkung von Wasser beispielsweise auf Trichlorsilan oder viel Trichlorsilan enthaltende Gemische verschiedener Chlorsiliciumverbindungen fallen bekanntlich Produkte an, die vorwiegend aus Dioxodisiloxan bestehen. Nach- dem Trocknen und Mahlen werden diese Präparate oft in einer durch Wasser nicht oder nur schwer benetzbaren (hydrophoben) Form erhalten..Process for converting dioxodisiloxane into the hydrophilic state In the case of the action of water, for example on trichlorosilane or a lot of trichlorosilane Mixtures containing various chlorosilicon compounds are known to fall Products that consist primarily of dioxodisiloxane. After drying and These preparations are often ground in a water that is difficult or impossible to wet (hydrophobic) form.

Es gelingt nun, benutzbare (hydrophile) Präparate aus hydrophobem Ausgangsmaterial dadurch zu gewinnen, daß man das trockene und zunächst nicht benetzbareDioxodisiloxan unter Anwendung einer geeigneten, an sich bekannten, energisch wirkenden Mischmethode, z. B. Naßvermahlen, nochmals mit Wasser in intensive Berührung bringt, dann wieder trocknet und zu einem Pulver vermahlt. Das Material wird durch dieses Verfahren in den hydrophilen Zustand übergeführt. Beispiel 5o g nicht benetzbares, trockenes, pulverförmiges Dioxodisiloxan wurden mit 300 ccm Wasser angepastet, so daß eine Masse von salbenartiger Konsistenz entstand. Die Klasse wurde darauf in einer mit kleinen leichten Porzellankugeln besetzten Porzellankugel- mühle ilz Stunde gemahlen, hei 5o bis 6o- im Luftstrom getrocknet und die entstandenen, leicht zusammengebackenen Brocken wieder -:mahlen. Es wurde ein äußerst voluminöses, staubiges Pulver erhalten, das beim Zusam- meiibringen mit Wasser leicht benetzt wurde. Das Wasseraufnahmevermögen des Präpa- r«tes wurde mittels des von Enslin ang:- gebenen Apparates (0. E n s 1 i n , Chem. Fabrik 6, 147 [1933]) an jeweils o,15 g Mate- rial gemessen. Es ergalr2n sich folgende, auf i g umgerechnet: Wert: : i g unhenetzbar,: s Atisgangsmaterial nahm innerhalb 15 Minuten o,ol); ccm Wasser auf; i g des gleichen nach dem beschriebenen Verfahren benetzbar ge- machten Materials nahm innerhalb i 3 Minuten 8,2 ccm Wasser auf. Das Wasseraufnahine- vermögen ist demgemäß auf das 1 22faclic ge- stiegen. Während die Wassermenge bei dem unbenetzbaren Material im Laufe mehrerer ',tunden nur unerheblich au@tieg, wurde bei d"in hy,drophilen Material der konstante Wöchstwert bereits nach etwa io Minuten er- reicht. It is now possible to obtain usable (hydrophilic) preparations from hydrophobic starting material by adding the dry and initially non-wettable dioxodisiloxane using a suitable, vigorous mixing method known per se, e.g. B. wet grinding, again brought into intensive contact with water, then dried again and ground to a powder. This process converts the material into the hydrophilic state. Example 50 g of non-wettable, dry, powdery dioxodisiloxane with 300 ccm Water pasted so that a mass of ointment-like consistency emerged. The class was on it in a with little light Porcelain balls studded porcelain balls mill for an hour, hot 5o to 6o im Air flow dried and the resulting, slightly caked chunks again -:grind. It became an extremely voluminous, dusty powder obtained, which when combined Meiibringen was slightly wetted with water. The water absorption capacity of the r «tes was determined by means of the Enslin: - given apparatus (0. E ns 1 in, Chem. Factory 6, 147 [1933]) on 0.15 g of material each rial measured. The following arise ig converted: Value:: ig unheditable ,: s Raw material took within 15 minutes o, ol); cc of water on; ig the same after wettable using the process described made material took within 3 minutes 8.2 cc of water. The water intake Accordingly, wealth is based on the 1 22faclic rose. While the amount of water at the unwettable material over the course of several ', which only appeared insignificantly, became at d "in hy, drophilic material the constant Weekly value already after about 10 minutes enough.

Claims (1)

PATLNTA\SPIIUCII: `'erfahren zur t herfiihrung von 1)ioxo@- disiloxan und dioxodisilo-xanhaltigen Prä- paraten aus dem hydrophoben in den hydrophilen Zustand, dadurch gekenn- zeichnet, daß man das trockene. 1i_-,-<Iro- phobe Material unter Anwcn(lung eines Mischverfahrens mit Wasser behandelt und troeknet.
PATLNTA \ SPIIUCII: `` 'Learned about the production of 1) ioxo @ - disiloxane and dioxodisiloxane containing pre- from the hydrophobic to the hydrophilic state, characterized by draws that one is dry. 1i _-, - <Iro- phobic material using a Mixing process treated with water and dry.
DEC57698D 1942-10-20 1942-10-20 Process for converting dioxodisiloxane into the hydrophilic state Expired DE745084C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC57698D DE745084C (en) 1942-10-20 1942-10-20 Process for converting dioxodisiloxane into the hydrophilic state

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC57698D DE745084C (en) 1942-10-20 1942-10-20 Process for converting dioxodisiloxane into the hydrophilic state

Publications (1)

Publication Number Publication Date
DE745084C true DE745084C (en) 1953-01-19

Family

ID=7028450

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC57698D Expired DE745084C (en) 1942-10-20 1942-10-20 Process for converting dioxodisiloxane into the hydrophilic state

Country Status (1)

Country Link
DE (1) DE745084C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075573B (en) * 1960-02-18 Nynäshamn Dr. techn. Gösta Lennarf Flemmert (Schweden) Process for the preparation of hydrophilic silica

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075573B (en) * 1960-02-18 Nynäshamn Dr. techn. Gösta Lennarf Flemmert (Schweden) Process for the preparation of hydrophilic silica

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