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US 9,309,488 B2Granted
Silicone solvent
AssigneeWacker Chemie AG
InventorAndreas Koellnberger
Life of this patent
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Abstract
Cured or uncured silicones are effectively removed from substrates with minimized substrate corrosion by the use of a silicone dissolver containing a tetralkylammonium fluoride and an inorganic base, dissolved in a solvent.
Claims5
A process for depolymerization and removal of crosslinked or uncrosslinked silicone residues from surface(s) or substrate(s), comprising contacting the surface(s) or substrate(s) with a silicone dissolver comprising:
- A) at least one tetraalkylammonium fluoride,
- B) at least one inorganic base capable of binding hydrogen ions, and
- C) at least one solvent suitable for dissolving not only the tetraalkylammonium fluoride A) but also at least 0.001 wt % of inorganic base B).
Dependencies are inferred from the claim text.