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Title
Mikrokapseln fuer die Kautschukherstellung und Verfahren zu deren Herstellung
Date Issued
2004
Author(s)
Jobmann, M.
Rafler, G.
Sagala, J.
Gross, I.
Patent No
2002-10241942
Abstract
Die Erfindung betrifft Mikrokapseln aus einem mindestens ein Kautschukadditiv enthaltenden Kern sowie einer Schale aus einem ersten Polymer. Auf der Oberflaeche der Mikrokapseln ist mindestens eine Beschichtung aus einem vom ersten Polymer sich unterscheidenden zweiten Polymer und/oder einer niedermolekularen anorganischen oder organischen Verbindung als Gleit- oder Abtragschicht zur Reduzierung der Haftreibung abgeschieden.
DE 10241942 A UPAB: 20040429 NOVELTY - Microcapsules obtained from at least one rubber-containing core and a shell from a first polymer, with at least one coating of the first polymer on the microcapsule surface and a different second polymer and/or a low molecular inorganic or organic compound as a lubricant- or removed material layer (RML)(sic) to decrease adhesive friction is new. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing the microcapsules from one or more rubber additive containing cores, a shell from a first polymer and at least one lubricant or removed material layer (RML)(sic) by the steps:(a) dispersion of the rubber additive in prepolymer solution forming the first polymer, (b) curing of the microcapsules by addition of catalyst and/or by raising the temperature, (c) separation of at least one lubricant or RML from the second polymer and/or low molecular inorganic or organic compound on the microcapsule surface. USE - The microcapsules are useful for rubber vulcanization (claimed). ADVANTAGE - The microencapsulated sulfur has high stability under mastication conditions, and the shell is mechanically stable and heat stable up to 120oC.
Language
de
Patenprio
DE 2002-10241942 A: 20020910