Isolation of novolak resin by low temperature sub surface forced

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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528155, 528165, G03C 500

Patent

active

061656755

ABSTRACT:
A water insoluble, aqueous alkali soluble novolak resin, process for producing such a novolak resin, a photoresist containing such a novolak resin, and a method for producing a semiconductor device, wherein the resin is isolated by sub surface forced steam distillation.

REFERENCES:
patent: 5374693 (1994-12-01), Lynch, et al.
patent: 5403696 (1995-04-01), Hioki et al.
patent: 5407780 (1995-04-01), Hioki et al.

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