Halogen-free varnish and prepreg thereof

Details Halogen-free varnish and prepreg thereof Halogen-free varnish and prepreg thereof

2009-03-24

2010-11-30

Singh-Pandey, Arti (Department: 1786)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C442S143000, C252S609000

Reexamination Certificate

active

07842401

ABSTRACT:
A halogen-free varnish includes epoxy resin, composite curing agent, condensed phosphate, and filler. The composite curing agent includes Benzoxazine (BZ) resin and amino triazine novolac (ATN) resin. The filler has aluminium hydroxide and silica. Glass fabric is dipped into the varnish so as to form a prepreg with better thermal stability, anti-flammability, and low moisture absorption.

REFERENCES:
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patent: 2004/0166324 (2004-08-01), Mishima et al.
patent: 2008/0241578 (2008-10-01), Lin et al.
patent: 2009/0176104 (2009-07-01), Chen et al.
patent: 293831 (1996-12-01), None
patent: 583258 (2004-04-01), None

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