Isola USA Corp.

David Bedner

Tarun Amla

William D Varnell

Varnish compositions and prepregs and laminates made therefrom wherein the varnish compositions include at least one first epoxy resin and at least one second epoxy resin that includes a bisphenol-A novolac epoxy resin and a harder wherein the at least one first epoxy resin and the at least one second bisphenol-A novolac epoxy resin are present in the varnish at a weight ratio ranging from about 1:1 to about 1:3.

High Tg epoxy formulation with good thermal properties

Flame retardant compositions that are halogen-free or substantially halogen-free are disclosed. In certain examples, the compositions comprise a halogen-free or substantially halogen-free epoxide and one or more phosphorated compounds. In some examples, the phosphorated compound comprises an average particle size less than 10 microns. In other examples, the phosphorated compound provides a surface area of 78.5 &#x3bc;mto about 1965 &#x3bc;m. Prepregs, laminates, molded articles and printed circuit boards using the compositions are also disclosed.

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Chandler, AZ, United States of America

David Bedner