E.i. Dupont De Nemours and Company

Other

Dsm IP Assets B.v.

William J Nebe

James J Osborne

John Alan Lawton

Thomas Eugene Dueber

Dalen E Keys

Peter J McCartin

Glen Anthony Thommes

Jonathan V Caspar

Daniel J Mickish

Roupen Leon Keusseyan

Shailaja R Vaidya

Christian Henning Clausen

Glen A Thommes

Osborne, James J

John K Holzapfel

Thomas R Fields

A photohardenable composition especially suitable for use in solid imaging. The compositions are characterized by their improved photospeed in combined with excellent initial green strength. The compositions allows for the production of articles by solid imaging processing techniques that show little or no distortion, high accuracy, excellent clarity. The compositions are low in toxicity and have low sensitivity to water.

Photohardenable epoxy composition

The present invention relates to a laser sinterable thermoplastic powder having a Tg of less than 50.degree. C.

Laser sinterable thermoplastic powder

The present invention discloses stabilizers for formulations containing photoacid precursors and cationically polymerizable materials. The stabilizers have a limited solubility in the formulations and are in solubility equilibrium in the formulation. The stabilizers being present as a solid phase in the formulation in excess of their solubility limit, the concentration of the stabilizers is continuously replenished as the stabilizer reacts with undesired free acid.

Stabilizers for use with photoacid precursor formulations

1. A method for making patterns in organic polymer films comprising the following steps:

Photoenhanced diffusion patterning for organic polymer films

A gold conductor composition comprising by weight, basis total inorganic solids, finely divided particles of 75-95% metallic gold at least 90% by weight of which gold particle have an aspect ratio of no greater than 2, 0.5-10% cadmium borosilicate glass, 0.1-5% spinel-forming divalent metal oxide selected from the group consisting of CuO, ZnO, MgO, CoO, NiO, FeO, MnO and mixtures thereof, and 0.1-1.0% metal selected from the group consisting of palladium, platinum and rhodium, all of the foregoing particles being dispersed in an organic medium. This composition is useful in electronic packaging for forming conductor patterns on ceramic-based substrates, particularly patterns on which metallic components are bonded by brazing.

Gold conductor composition for forming conductor patterns on ceramic

A semi-aqueous developable copper conductive composition which is fireable in a nonoxidizing atmosphere is developable in an aqueous solution containing 0.63 percent by weight sodium borate and 8.7 percent by weight butyl cellusolve.

Photosensitive semi-aqueous developable copper conductor composition

A semi-aqueous developable photosensitive gold conductive composition which is fireable in a nonoxidizing atmosphere is developable in an aqueous solution containing 0.63 percent by weight sodium borate and 8.7 percent by weight butyl cellusolve.

Photosensitive semi-aqueous developable gold conductor composition

A process for brazing a metallized component to a metallized ceramic-based substrate comprising the steps of:

Process for brazing metallized components to ceramic substrates

A photosensitive aqueous developable photosensitive copper conductive composition is disclosed which is fireable in a nonoxidizing atmosphere is developable in an aqueous solution containing 0.8 percent by weight sodium carbonate.

Photosensitive aqueous developable copper conductor composition

A photosensitive aqueous developable photosensitive gold conductive composition is disclosed which is fireable in a nonoxidizing atmosphere is developable in an aqueous solution containing 0.8 percent by weight sodium carbonate.

Photosensitive aqueous developable gold conductor composition

A photosensitive ceramic coating composition which is fireable in a substantially nonoxidizing atmosphere comprising an admixture of:

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Wilmington, DE, United States of America

William J Nebe