Resin for protecting semiconductors

Details Resin for protecting semiconductors Resin for protecting semiconductors

C - Chemistry, Metallurgy

08

G

C08G 73/10 (2006.01) H01L 23/29 (2006.01)

Patent

CA 2050919

Abstract of the Invention The resins for protection of semiconductors of this invention comprise polyimides having repeating units of the general formulas (1), (2), and (3) at a specified ratio Image (1) Image (2) Image (3) wherein Ar is at least one radical selected from Image and radicals of the general formula Image - 2 5 - in which Z is a direct bond, -O-, or -SO2-, X is -O- or -C(CH3)2-, Y is a direct bond or at least one radical selected from -O-, -SO2-, -C(CH3)-, and -C(CF3)2-, R1 and R2 are alkyl groups, m is an integer from 0 to 4. R3 and R4 are divalent organic radicals, R5 to R8 are hydrocarbon radicals with 1 to 6 carbon atoms, and n is an integer from 1 to 5. - 2 6 -

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