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US 6,696,587 B2Granted
Process for treating aminosilane discolorations
AssigneeDegussa AG
InventorPeter Jenkner
Life of this patent
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Abstract
A discoloration of an aminosilane having a content of a free base is treated by adding an acid chloride to the aminosilane to obtain a mixture having a molar excess of acid chloride; neutralizing the molar excess of the acid chloride in one or more steps with a molar deficit of a base to obtain a mixture containing a salt; separating off the salt from; and irradiating the remaining aminosilane with UV-containing light.
Claims20
A process for treating a discoloration of an aminosilane, comprising:
- adding an acid chloride to said aminosilane having said discoloration to obtain a mixture having a molar excess of said acid chloride;
- neutralizing said molar excess of said acid chloride in one or more steps with a molar deficit of a base to obtain a mixture containing a salt of said acid chloride and said base;
- separating off said salt from said mixture containing said salt to obtain a treated aminosilane;
- and
- irradiating said treated aminosilane with UV-containing light to obtain an irradiated aminosilane.
2 more elements
Dependencies are inferred from the claim text.