3d Systems, Inc.

Doan, Vu A.

Schmidt, Kris Alan

Xu, Pingyong

Stockwell, John S.

Holden, Susan Kay

Ruatta, Stephen A.

Vu A Doan

Pingyong Xu

Kris A Schmidt

Loc V Bui

Kelly Kwo

John S Stockwell

Stephen Ruatta

Susan Kay Holden

My T Nguyen

Stephen A Ruatta

Kris Alan Schmidt

A jettable non-curable support material composition useful for three-dimensional ink jet printing comprising at least one fatty alcohol and at least one abietic rosin ester alcohol, wherein the support material has a melting point between about 50&#xb0; C. to about 65&#xb0; C. and a freezing point between about 45&#xb0; C. to about 55&#xb0; C.

Phase change support material composition

A UV curable composition useful for three-dimensional inkjet printing comprising (i) at least one UV curable urethane (meth)acrylate resin; (ii) at least one wax; (iii) at least one (meth)acrylate diluent; (iv) at least one photoinitiator; and (v) at least one polymerization inhibitor; wherein the amount of wax (ii) is sufficient to phase change the UV curable composition after jetting.

Ultra-violet light curable hot melt composition

Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68&deg; C., a melting point of at least about 88&deg; C. and a viscosity of about 13 centipoise at 135&deg; C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed compositions.

Compositions and methods for selective deposition modeling

A component to control the viscosity of phase change material formulations is made by reacting selected nucleophiles, including fatty acid/alcohol reactants with an isocyanate, is disclosed. The addition of the isocyanate and the different nucleophiles will create a viscosity modifying component of low viscosity that can be formulated with higher molecular weight polyamide resins to achieve increased toughness in phase change solid imaging materials and carrier compositions used to make phase change ink jet inks.

Phase change solid imaging material

Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68.degree. C., a melting point of at least about 88.degree. C. and a viscosity of about 13 centipoise at 135.degree. C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed compositions.

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Glendale, CA, United States of America

Vu A Doan