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US 6,440,642 B1Granted
Dielectric composition
AssigneeShipley Company, L.L.C.
InventorsJames G. Shelnut, Wade Sonnenberg, James L. Aubry, Jennifer Patricia Canlas
Life of this patent
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Abstract
Low VOC, dielectric compositions suitable for use in circuit board manufacture are disclosed. Also disclosed are methods of making circuit boards using the low VOC, dielectric compositions.
Claims15
A definable composition consisting essentially of:
- a) from 1 to 99% by weight of at least one low dielectric constant, crosslinkable material selected from the group consisting of polybutadiene, functionalized polybutadiene, polyphenyleneoxides, functionalized polyphenyleneoxides, polyfluorocarbons, functionalized polyfluorocarbons and mixtures thereof;
- b) from 1 to 99% by weight of at least one reactive diluent;
- and
- c) a catalyst selected from the group consisting of thermal acid generators, photoacid generators, thermal base generators, photobase generators, and mixtures thereof;
- wherein the composition comprises up to 2% of organic solvent.
2 more elements
A definable composition consisting essentially of:
- a) from 20 to 80% by weight of at least one low dielectric constant, crosslinkable material selected from the group consisting of polybutadiene, functionalized polybutadiene, polyphenyleneoxides, functionalized polyphenyleneoxides, polyfluorocarbons, functionalized polyfluorocarbons and mixtures thereof;
- b) from 10 to 80% by weight of at least one crosslinking agent;
- c) from 0.1 to 25% by weight of at least one catalyst selected from the group consisting of thermal acid generators, photoacid generators, thermal base generators, photobase generators, and mixtures thereof;
- and
- d) from 5 to 60% by weight of a reactive diluent;
- wherein the composition comprises up to 2% of organic solvent.
3 more elements
Dependencies are inferred from the claim text.