Fluoroalkyl acrylate resist material and process for forming fin

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

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430270, 430296, 430331, G03C 500

Patent

active

046861688

ABSTRACT:
A resist material of positive type having a high sensitivity, a high resolving power and an excellent adhesion property to substrates, which comprises a copolymer of a fluoroalkyl acrylate having the general formula: ##STR1## wherein R.sub.1 is methyl group, ethyl group, a halogen-substituted methyl or ethyl group, a halogen atom or hydrogen atom, R.sub.2 is a bivalent hydrocarbon group having 1 to 6 carbon atoms, and R.sub.f is a fluoroalkyl group having 1 to 15 carbon atoms, with an acrylic comonomer selected from the group consisting of a glycidyl acrylate, an acrylic acid, an acrylamide and an .alpha.-cyanoacrylate.

REFERENCES:
patent: 4262081 (1981-04-01), Bowden et al.
patent: 4421843 (1983-12-01), Hattori et al.

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