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US 10,647,877 B2Granted
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
Life of this patent
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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.
Claims15
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, wherein the particulate poly(phenylene ether) is undissoved in the ketone.
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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, wherein the particulate poly(phenylene ether) is undissoved in the ketone;
- 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.
5 more elements
Dependencies are inferred from the claim text.