Fractionated novolak resin from cresol-formaldehyde reaction mix

Details Fractionated novolak resin from cresol-formaldehyde reaction mix Fractionated novolak resin from cresol-formaldehyde reaction mix

1996-12-18

1999-06-08

Mullis, Jeffrey C.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528142, 528144, 528491, 528494, 528495, 528499, 528502R, C08G 810

Patent

active

059105593

ABSTRACT:
The present invention provides a method for producing a film forming, fractionated novolak resin having consistent molecular weight and superior performance in photoresist composition, by isolating such novolak resin fractions without high temperature distillation. A method is also provided for producing photoresist composition from such a fractionated novolak resin and for producing semiconductor devices using such a photoresist composition.

REFERENCES:
patent: 5073622 (1991-12-01), Wojtech et al.
patent: 5215857 (1993-06-01), Hosaka et al.
patent: 5476750 (1995-12-01), Rahman et al.
patent: 5478691 (1995-12-01), Miyashita et al.
patent: 5494785 (1996-02-01), Sizensky et al.
patent: 5621071 (1997-04-01), Newsham et al.
Sumitomo Chem., WPIDS Abstract 87-252532, Abstracting JP62172341, Jul. 1987.
CA 66:29439, Balteniene (1966.
WPIDS AN 90-111173 Abstracting JP 02060915 (1996).

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