Aromatic novolak resins and blends

Details Aromatic novolak resins and blends Aromatic novolak resins and blends

1990-10-22

1993-06-01

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528129, 528144, 528148, 528151, 528153, 528155, 528157, 528165, C08G 804

Patent

active

052161110

ABSTRACT:
An essentially aromatic alkali soluble novolak resin comprising the product resulting from the acid condensation of an aromatic aldehyde and a phenol where the resin has a molecular weight in excess of 1500 and a glass transition temperature in excess of 125.degree. C. If desired, the aromatic novolak resin may be blended with a conventional novolak resin to regulate the glass transition temperature of the resin. The aromatic novolak resin and blends formed therefrom are especially suitable as coating resins and are useful for the formation of photoresist coating compositions.

REFERENCES:
patent: 4983492 (1991-01-01), Trefonas, III et al.
Hiraoka, et al. "Functionally Substituted Novolac Resins: Lithographic Applications, Radiation Chemistry, & Photoxidation," Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) vol. 25, No. 1, 1984--pp. 322-323.

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