Highly filled polymeric compositions
AssigneeMLT/Micro-Lite Technology Corporation
InventorMichael F. Lucey
Life of this patent
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Abstract
A highly, filled composition is described containing a polymeric material, at least one filler, and at least one surface active agent. The filler(s) and surface active agent(s) are selected based upon the relationship between their pH's allowing for enhanced filler loading of the compositions. The compositions of the present invention can be used to coat electrical and electronic components or as inasfar covering substrates.
Claims43
A highly filled composition, comprising:
- a polymeric material;
- at least one filler, and
- at least one surface active agent;
- wherein one of the surface active agent, or filler has an overall pH greater than or equal to 7 and the other of the surface active agent or filler has an overall pH less than or equal to 7, provided that both overall pH's do not equal 7, the pH relationship between the surface active agent and filler enhancing the filler loading of the composition.
The highly filled composition of claim 9 or 12 wherein the solvent is selected from the group consisting of methylethylketone, toluene, isopropyl alcohol and xylene.
A highly filled composition, comprising:
- a polymeric material;
- at least one filler, and
- at least one surface active agent;
- wherein the volume % of filler in the composition is sufficiently high to impart durability into a coating formed from the composition.
The highly filled composition of claim 32 or 36 wherein the volume % filler is greater than about 50.
A method of preparing a highly filled composition, comprising:
- selecting a polymeric material;
- selecting at least one filler having a first overall pH;
- selecting at least one surface active agent having a second overall pH;
- and
- mixing the polymeric material, filler(s) and surface active agent(s) forming a highly, filled composition, whereby one of the first and second overall pH's is greater than or equal to 7 and the other of the first and second overall pH's is less than or equal to 7 provided that both overall pH's do not equal 7.
Dependencies are inferred from the claim text.