Method and device for purifying liquid polysiloxane material and its use
AssigneeBayer Aktiengesellschaft
InventorFranciscus Petrus Marie Nooren
Life of this patent
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Abstract
The invention relates to a method for purifying liquid polysiloxane containing impurities as a low-molecular-weight fraction, by evaporating the low-molecular-weight fraction, in which method a liquid stream of impure liquid material in the form of a bundle of a multiplicity of streams or jets is brought into contact with a flowing gas phase, after which the gas stream, which contains the impurities, is removed and purified liquid material is collected; a device for performing this method and also the use of purified liquid material.
Claims26
A method for removing low molecular weight components from liquid polysiloxane through evaporation, which comprises forming the liquid polysiloxane into a bundle of multiple liquid streams, and contacting said multiple liquid streams of polysiloxane with a flowing gas stream, whereby low molecular weight components present in said liquid polysiloxane are removed from said liquid polysiloxane by said gas stream.
Device for purifying liquid polysiloxane, comprising a container having a reservoir, open at the top and at the bottom, at least one perforated plate or screen which is oriented essentially in the horizontal plane and which is disposed above the reservoir, and distributing means for feeding liquid material onto, and distributing it over, the uppermost perforated plate or screen and through which gas can be passed horizontally.
Dependencies are inferred from the claim text.