Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Forming nonplanar surface
Patent
1992-11-23
1993-08-10
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Forming nonplanar surface
430165, 430191, 430192, 430193, 528155, 528160, G03F 732, G03F 7023
Patent
active
052347958
ABSTRACT:
A block copolymer novolak resin composition comprising at least one unit of the reaction product of an alkali-soluble phenolic polymer and a reactive ortho, ortho bonded oligomer having the formula: ##STR1## wherein x is from 2 to 7; wherein R is selected from hydrogen a lower alkyl group or lower alkoxy group having 1-4 carbon atoms and a halogen group; and Y.sub.1 is either a hydroxyl group; an alkoxy group or a halogen group; and Y.sub.2 is hydrogen, alkyl, alkoxy, halogen, hydroxyl, --CH.sub.2 OH, --CH.sub.2 -- halogen, or --CH.sub.2 --alkoxy group.
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Effect of Substituents on the Composition and Dissociation Behavior or Some Four Component Phenolic Copolymers by S. K. Chatterjee et al., Oct. 1981.
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Blakeney Andrew J.
Honda Kenji
Jeffries, III Alfred T.
Tadros Sobhy
Bowers Jr. Charles L.
Chu John S.
OCG Microelectronic Materials Inc.
Simons William A.
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