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DE945478C - Process for the production of a microporous hard or soft rubber vulcanizate - Google Patents

Process for the production of a microporous hard or soft rubber vulcanizate

Info

Publication number
DE945478C
DE945478C DEA19590A DEA0019590A DE945478C DE 945478 C DE945478 C DE 945478C DE A19590 A DEA19590 A DE A19590A DE A0019590 A DEA0019590 A DE A0019590A DE 945478 C DE945478 C DE 945478C
Authority
DE
Germany
Prior art keywords
production
soft rubber
rubber vulcanizate
microporous hard
microporous
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
DEA19590A
Other languages
German (de)
Inventor
Heinrich Ziegner
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.)
Accumulatoren Fabrik AG
Original Assignee
Accumulatoren Fabrik 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 Accumulatoren Fabrik AG filed Critical Accumulatoren Fabrik AG
Priority to DEA19590A priority Critical patent/DE945478C/en
Application granted granted Critical
Publication of DE945478C publication Critical patent/DE945478C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Description

Verfahren zur Herstellung eines mikroporösen Hart- oder Weichkautschuk-Vulkanisats Bei dem Verfahren nach Patent 878 711 wird als Zusatz zur Kautschukmischung ein Kieselsäuregel verwendet und hierbei zur Heraufsetzung des Verdampfungspunktes des Wassers und der Wasseraufnahme vorzugsweise Glyzerin mit einem Gelbildner für die Erzeugung des Kieselsäuregels aus Wasserglas verwendet.Process for the production of a microporous hard or soft rubber vulcanizate In the process according to patent 878 71 1, a silica gel is used as an additive to the rubber mixture and, in this case, preferably glycerine with a gel former for the production of the silica gel from water glass to increase the evaporation point of the water and the water absorption used.

Nach der vorliegenden Erfindung wird das relativ teure Glyzerin durch den Zusatz eines Ammonsalzes, wie z. B. Ammoncarbonat, ersetzt. Es bildet sich dann das Hydrat der Kieselsäure, indem das Wasser als Hydratwasser gebunden wird und deshalb fester an der Kieselsäure haftet als es in einem einfachen Gel der Fall ist. Verarbeitet man eine derartige Mischung zusammen mit Rohkautschuk und den üblichen Vulkanisationsmitteln auf der heißen Walze, so bleibt der größte Teil des Wassers in der Mischung, so daß bei nachfolgender Vulkanisation die gewünschte Porosität entsteht.According to the present invention, the relatively expensive glycerin is made by the addition of an ammonium salt, such as. B. ammonium carbonate replaced. It then forms the hydrate of silica by binding the water as water of hydration and therefore adheres more firmly to the silica than is the case in a simple gel is. If you process such a mixture together with raw rubber and the usual Vulcanizing agents on the hot roller, so most of the water remains in the mixture, so that the desired porosity during subsequent vulcanization arises.

Claims (1)

PATENTANSPRUCII: Verfahren zur Herstellung eines mikroporösen Hart- oder Weichkautschuk-Vulkanisats unter Zusatz eines Kieselsäuregels zu einer Kautschukmischung nach Patent 878 711, dadurch gekennzeichnet, da,B an Stelle des Glyzerins Ammonsalze zugersetzt werden.PATENT CLAIM: Process for the production of a microporous hard or soft rubber vulcanizate with the addition of a silica gel to a rubber mixture according to patent 878 711, characterized in that, B instead of glycerine is ammonium salts be added.
DEA19590A 1951-03-12 1954-01-29 Process for the production of a microporous hard or soft rubber vulcanizate Expired DE945478C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA19590A DE945478C (en) 1951-03-12 1954-01-29 Process for the production of a microporous hard or soft rubber vulcanizate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE307007X 1951-03-12
DEA19590A DE945478C (en) 1951-03-12 1954-01-29 Process for the production of a microporous hard or soft rubber vulcanizate

Publications (1)

Publication Number Publication Date
DE945478C true DE945478C (en) 1956-07-12

Family

ID=25790297

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA19590A Expired DE945478C (en) 1951-03-12 1954-01-29 Process for the production of a microporous hard or soft rubber vulcanizate

Country Status (1)

Country Link
DE (1) DE945478C (en)

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