Esterification product of aromatic novolak resin with quinone di

Details Esterification product of aromatic novolak resin with quinone di Esterification product of aromatic novolak resin with quinone di

1995-03-29

1996-12-31

Clark, W. Robinson H.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525505, 528156, 528158, 528162, C08L 6106, C08L 6114

Patent

active

055895530

ABSTRACT:
A resin suitable for use as a photoresist that is the esterification product of an o-quinonediazide compound and an aromatic novolak resin. The aromatic novolak resin may be the condensation product of a reactive phenol with a bis(hydroxymethyl)phenol or an aromatic aldehyde. The aromatic resin may be chain extended by further reaction with an additional aldehyde. The resin has a maximum of 20 percent of its phenolic hydroxyl groups esterified with the o-quinonediazide sulfonate compound.

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