Low shrinkage polyester thermosetting resins

Details Low shrinkage polyester thermosetting resins Low shrinkage polyester thermosetting resins

2011-01-11

2011-01-11

Bernshteyn, Michael M (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S319000, C526S346000, C526S313000, C560S090000, C560S121000, C560S122000, C560S127000

Reexamination Certificate

active

07868113

ABSTRACT:
The invention is based on the discovery that a certain polyester compounds are useful as b-stageable adhesives for the microelectonic packaging industry. The polyester compounds described herein contain ring-opening or ring-forming polymerizable moieties and therefore exhibit little to no shrinkage upon cure. In addition, there are provided well-defined b-stageable adhesives useful in stacked die assemblies. In particular, there are provided assemblies wherein the b-stageable adhesive encapsulates a portion of the wiring members contained within the bondline gap between the stacked die.

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