Process for removing metal ions from organic photoresist solutio

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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210681, 210683, 210684, 210685, 210686, 528482, G03F 7004

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active

056746628

ABSTRACT:
The invention is a process of removing metal ion contaminants from an organic solution, especially one having acid labile components. The process comprises modifying a cationic exchange resin by treatment with ammonia or amine and contacting said modified ion exchange resin with an organic solution containing metal ion contaminants. The process is especially useful for treating photoresist compositions.

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