Patent ID: 11911954
Assignee: SOLVAY SPECIALTY POLYMERS USA, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  G  H  Y | IPC B  G

Claim 15:
16. A method for making a three-dimensional object with an additive manufacturing system, the method comprising:
printing layers of a support structure from a support material, the support material comprising more than 50% wt. of a semi-crystalline polyamide (A) having a melting point, as determined according to ASTM D3418, of at least 250° C. and possessing a water uptake at saturation, by immersion in water at 23° C., of at least 5 wt. %,
printing layers of the three-dimensional object from a part material in coordination with the printing of the layers of the support structure, wherein at least a portion the printed layers of the support structure support the printed layers of the three-dimensional object, and
removing at least a portion of the support structure from the three-dimensional object to obtain the three-dimensional object,
wherein the support material comprises at least one water-soluble polymeric additive different from polyamide (A), which is selected from the group consisting of polyethyleneglycol (PEG) polymers; polyvinylpyrrolidone (PVP) polymers; polymethylenenaphthalene sultanates polymers; styrene sulfonate polymers having —SO3Xa groups, with Xa being H or a metal; sulfonated sulfone polymers having —SO3Xa groups, with Xa being H or a metal; polysuccinimides and salts; polyaspartic acids and salts; poly(meth)acrylic acids and salts; polyvinyl sulfonic acids and salts; and polyvinylalcohols.