Process for refining crude resin for electronic material

Details Process for refining crude resin for electronic material Process for refining crude resin for electronic material

2007-12-25

2007-12-25

Visconti, Geraldina (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C528S50200C

Reexamination Certificate

active

10543263

ABSTRACT:
A process is provided for effectively removing by-products such as oligomers contained within a crude resin for an electronic material, thus producing a resin for an electronic material. In this process, a crude resin for an electronic material containing (a1) structural units derived from a (meth)acrylate ester with a hydrophilic site is washed using (b1) an organic solvent which is capable of dissolving said crude resin for an electronic material and which separates into two layers when combined with water, and (b2) water.

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Office Action for the corresponding Chinese Patent Application No. 2004-80002954.0 (issued on Jul. 14, 2006).
Office Action for the corresponding Korean Patent Application No. 10-2005-7013728 (issued on Jul. 21, 2006).

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