| US 7,531,204 B2 | ||
| Compositions useful in electronic circuitry type applications, patternable using amplified light, and methods and compositions relating thereto | ||
| Yueh-Ling Lee, Princeton Junction, N.J. (US); Meredith L. Dunbar, Canal Winchester, Ohio (US); Harry Richard Zwicker, Glen Mills, Pa. (US); Carl B. Wang, Raleigh, N.C. (US); Brian C. Auman, Pickerington, Ohio (US); and Shane Fang, Newark, Del. (US) | ||
| Assigned to E. I. du Pont de Nemours and Company, Wilmington, Del. (US) | ||
| Filed on Aug. 09, 2007, as Appl. No. 11/891,129. | ||
| Application 11/891129 is a division of application No. 11/153206, filed on Jun. 15, 2005. | ||
| Prior Publication US 2008/0015320 A1, Jan. 17, 2008 | ||
| Int. Cl. B05D 3/00 (2006.01) | ||
| U.S. Cl. 427—58 [427/554; 427/555; 264/425; 264/497] | 3 Claims |
| 1. A process for making a light-activatable polymer composite, consisting essentially of the steps of:
A. dispersing a spinel crystal filler in an organic solvent, wherein the average particle size of the spinel crystal filler
is from 50 to 10000 nanometers to form a dispersion,
B. combining the dispersion with a polymer binder selected from the group consisting of epoxy resins, silica filled epoxy,
bismaleimide resins, bismaleimide triazines, fluoropolymers, liquid crystal polymers, cyanate esters, or combinations thereof,
to form a composition,
C. applying the composition onto a portion of a flat surface to form a layer, and
D. applying thermal energy to the layer to form a polymer composite, the polymer composite consisting of above 15 weight percent
up to 50 weight percent spinel crystal filler, 45 to 85 weight percent polymer binder and up to 10 weight percent of an optional
ingredient,
wherein the spinel crystal filler is represented by a chemical formula AB2O4 or BABO4, where A is a metal cation having a valence of 2 selected from a group consisting of manganese, copper, and combinations
of two or more of these, and where B is a metal cation having a valence of 3 selected from a group consisting of manganese,
iron, chromium, and combinations of two or more of these.
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