Low dielectric loss tangent-resin varnish, prepreg,...

Details Low dielectric loss tangent-resin varnish, prepreg,... Low dielectric loss tangent-resin varnish, prepreg,...

2006-09-29

2009-12-29

Sanders, Kriellion A (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S094000, C524S469000, C524S493000

Reexamination Certificate

active

07638564

ABSTRACT:
There is provided a varnish of a low dielectric loss tangent resin composition which is low in viscosity and excellent in storage stability. The varnish of a low dielectric loss tangent resin composition contains a thermosetting monomer (A) having a weight average molecular weight of not more than 1,000, a high polymer (B) having a weight average molecular weight of not less than 5,000, a halogen flame-retardant agent (C), a silicon dioxide filler (D), and an organic solvent (E). The average particle diameter of each the components (C) and (D) is in the range of 0.2 to 3 μm.

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Chinese Office Action with partial translation of Appln. No. 2006101414353 dated May 22, 2009.

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