Low chlorine content epoxy resin
AssigneeSiemens Aktiengesellschaft
InventorPeter Gröppel
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Abstract
The invention relates to epoxy resins having an extremely low content of chlorine, particularly a low content of organically bound chlorine. The invention also relates to a production method during which total chlorine contents of less than 100 ppm in the epoxy resin are achieved by extracting solid epoxy resin particles, optionally after a prior comminution and/or reprecipitation. The use of these low-chlorine epoxy resins in the fields of electronics and/or electrical engineering considerably reduces the components' susceptibility to corrosion.
Claims13
A method for reducing chlorine content in epoxy resins, comprising the step of extracting the epoxy resin in solid form in a solvent, wherein the solvent and the epoxy resin are present in a 1:1 ratio regarding parts by weight, to obtain an extracted epoxy resin having a total chlorine content of less than 100 ppm of organically and ionically bound chlorine, wherein the solvent is at least one selected from the group consisting of an organic solvent, an alcohol, and a mixture thereof with water.
Dependencies are inferred from the claim text.