Thermally decomposable polymer compositions incorporating thermally activated base generators

摘要

Embodiments in accordance with the present invention provide sacrifical polymer compositions and methods for fabricating electronic devices using such sacrifical polymer compositions where such methods include (1) providing a tacky sacrifical polymer composition that holds components in a desired alignment to one another, (2) providing solder fluxing for effecting electrical coupling; and (3) thermal decomposition or depolymerization of the sacrificial polymer composition to provide essentially residue free surfaces.

主权项

1. A sacrificial polymer composition comprising:
a polycarbonate selected from polypropylene carbonate or a polynorbornanediol carbonate polymer having a weight average molecular weight of from 2000 to 250,000 Dalton; a thermally activated base generator represented by formula IV: a solvent selected from anisole or gamma butyrolactone; and wherein said composition further comprising from 3 weight percent to 5 weight percent formic acid based on the total weight of the composition.