Particulate poly(phenylene ether)-containing varnish composition, composite and laminate prepared therefrom, and method of forming composite
AssigneeSabic Global Technologies B.V.
InventorsEylem TARKIN-TAS, Edward Norman PETERS
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Abstract
A curable composition includes specific amounts of a ketone, a curable component, and particulate poly(phenylene ether) having a mean particle size of 3 to 12 micrometers and a particle size relative standard deviation of 20 to 60 percent. The composition has a low viscosity that facilitates wetting of reinforcing structures, and composites formed from the composition and a reinforcing structure cure to form a dielectric material with a low dielectric constant and loss tangent.
Claims19
A composition comprising, based on the total weight of the composition:
- 30 to 70 weight percent of a ketone selected from the group consisting of acetone, methyl ethyl ketone, methyl isobutyl ketone, and combinations thereof;
- 15 to 60 weight percent of a curable component;
- and
- 5 to 40 weight percent of particulate poly(phenylene ether) having a mean particle size of 3 to 12 micrometers and a particle size relative standard deviation of 20 to 60 percent.
A method of forming a composite, comprising:
- at least partially coating a reinforcing structure with a curable composition, wherein the curable composition comprises, based on the total weight of the composition,
- 30 to 70 weight percent of a ketone selected from the group consisting of acetone, methyl ethyl ketone, and combinations thereof;
- 15 to 60 weight percent of a curable component;
- 5 to 40 weight percent of particulate poly(phenylene ether) having a mean particle size of 3 to 12 microns and a particle size relative standard deviation of 20 to 60 percent;
- and
- an effective amount of a curing agent for the curable component to form a curable composition-coated reinforcing structure;
- and
- removing at least a portion of the ketone from the curable composition-coated reinforcing structure to form the composite.
A composite comprising:
- a reinforcing structure;
- and
- an at least partially cured resin at least partially coating the reinforcing structure;
- wherein the at least partially cured resin comprises, based on the total weight of the at least partially cured resin,
- 10 to 60 weight percent of a particulate poly(phenylene ether) having a mean particle size of 3 to 12 micrometers and a particle size relative standard deviation of 20 to 60 percent, and
- 40 to 90 weight percent of a product of at least partially curing
- a curable component selected from the group consisting of cyanate ester resins, triallyl cyanurate, triallyl isocyanurate, polybutadienes, difunctional epoxy compounds, polyfunctional epoxy compounds, unsaturated esterimide resins, curable silicone resins, and combinations thereof, and
- an effective amount of a curing agent for the curable component.
A laminate comprising the product of laminating a plurality of prepregs, wherein each prepreg comprises
- a reinforcing structure;
- and
- an at least partially cured resin at least partially coating the reinforcing structure;
- wherein the at least partially cured resin comprises, based on the total weight of the at least partially cured resin,
- 10 to 60 weight percent of a particulate poly(phenylene ether) having a mean particle size of 3 to 12 micrometers and a particle size relative standard deviation of 20 to 60 percent, and
- 40 to 90 weight percent of the product of at least partially curing
- a curable component selected from the group consisting of cyanate ester resins, triallyl cyanurate, triallyl isocyanurate, polybutadienes, difunctional epoxy compounds, polyfunctional epoxy compounds, unsaturated esterimide resins, curable silicone resins, and combinations thereof, and
- an effective amount of a curing agent for the curable component.
Dependencies are inferred from the claim text.