公开(公告)号：JP2000309703A

公开(公告)日：2000-11-07

申请号：JP2000049736

申请日：2000-02-25

Applicant: 3 D SYSTEMS INC

Inventor： BUI LOC V ,  DOAN VU ,  KWO KELLY

IPC: B29C41/00 ,  B29C67/00 ,  B29K77/00 ,  B29K91/00 ,  C08K5/103 ,  C08K5/12 ,  C08K5/20 ,  C08L23/16 ,  C08L77/06 ,  C08L91/06 ,  C08L93/04 ,  C09D11/00

Abstract: PROBLEM TO BE SOLVED: To make it possible to produce a three-dimensional object with a minimum curling, delamination and stress cracking at a rate faster than known rates by a selective laminating technique using a disclosed composition. SOLUTION: A phase transition composition is used which is solid at an ambient temperature and liquid at a temperature higher than the ambient temperature so that it is advantageous for use in a selective laminating method for shaping a three-dimensional object. The composition is a mixture of semicrystalline polar and non-polar components and has a freezing point of at least about 68 deg.C, a melting point of at least 88 deg.C and a viscosity of about 13 cP at 135 deg.C. It contains two or more waxes having a wide melting point range and a wide molecular weight range.

公开(公告)号：JP2001214098A

公开(公告)日：2001-08-07

申请号：JP2000345730

申请日：2000-11-13

Applicant: 3 D SYSTEMS INC

Inventor： NGUYEN MY T ,  DOAN VU ,  KWO KELLY ,  BUI LOC V

IPC: B41J2/01 ,  B41M5/00 ,  C08G18/28 ,  C08G18/38 ,  C08G18/71 ,  C08G69/34 ,  C08K5/00 ,  C08K5/205 ,  C08K5/29 ,  C08L77/00 ,  C08L91/06 ,  C08L93/04 ,  C08L101/00 ,  C09D11/00

Abstract: PROBLEM TO BE SOLVED: To provide a means to create a tougher phase change formulation with a component that control its viscosity by using an isocyanate-derived material to control the viscosity for a relatively low viscosity resins including nonpolymeric resins, and waxes, designed for phase change ink jet and other forms of phase change material printing and rapid prototyping applications, especially those requiring materials with increased toughness as new materials for novel and different application of the phase change materials. SOLUTION: This formulation for use in jetting from a print head comprised (a) a component to control the viscosity of the formulation, the component being linear alkyl urethane, (b) a component to promote adhesion to a substrate, (c) a component to impart toughness to the formulation, and (d) a component to control shrinkage of the jetted formulation.