Compositions and methods for use in three dimensional model printing

• US 7,183,335 B2
• Filed: 04/05/2005
• Issued: 02/27/2007
• Est. Priority Date: 03/13/2000
• Status: Expired due to Term

• Current Assignee: Stratasys Incorporated
• Original Assignee: Objet Geometries
• Inventors: Napadensky, Eduardo
• Primary Examiner(s): BERMAN, SUSAN W
• Application Number:
  US11/098,690
• Publication Number:
  US 20050192372A1
• Time in Patent Office: 693 Days
• Field of Search: 522/71, 522/75, 522/81, 522/84, 522/85, 522/180, 522/173, 524/845, 524/846, 528/374, 528/376
• US Class Current: 522/71
• CPC Class Codes: B29C 64/112 using individual droplets, e.g. from jetting heads
• CPC Class Codes: B29C 64/40 Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• CPC Class Codes: B33Y 40/20 Post-treatment, e.g. curing, coating or polishing
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: B41M 3/006 Patterns of chemical products used for a specific purpose, e.g. pesticides, perfumes, adhesive patterns; use of microencapsulated material; Printing on smoking articles
• CPC Class Codes: C08G 2/00 Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
• CPC Class Codes: G03F 7/0037 Production of three-dimensional images

Abstract

Compositions for use in the manufacture of three-dimensional objects including compositions for use as a support and/or release material in the manufacture of the three-dimensional objects are provided. There is thus provided, in accordance with an embodiment of the present invention, a composition suitable for building a three-dimensional object. The compositions may include, inter alia, a curable component, having a functional group, wherein if the functional group is a polymerizable reactive functional group, then the functional group is a (meth)acrylic functional group, a photo-initiator, a surface-active agent and a stabilizer; wherein said composition has a first viscosity of about 50–500 cps at a first temperature, wherein said first temperature is ambient temperature, and a second viscosity lower than 20 cps at a second temperature wherein said second temperature is higher than said first temperature, wherein, after curing, the composition results in a solid form. There is thus provided, in accordance with another embodiment of the present invention, a composition suitable for support in building a three-dimensional object. The compositions may include, inter alia: a non-curable component, a curable component, wherein the non-curable component is not reactive with said curable component, a surface-active agent and a stabilizer; wherein said composition has a first viscosity of about 20–500 cps at a first temperature, wherein said first temperature is ambient temperature, and a second viscosity lower than 20 cps at a second temperature wherein said second temperature is higher than said first temperature, wherein, after irradiation, the composition results in a solid, a semi-solid or liquid material. A method for the preparation of a three-dimensional object by three-dimensional printing is provided in accordance with embodiments of the present invention. Embodiments of the present invention further provide a three-dimensional object prepared according to the methods of the invention.

Claims

1. A composition suitable for support in building a three-dimensional object, said composition comprising:

a non-curable component;

a curable component;

wherein said non-curable component is not reactive with said curable component,

a sulfur containing component selected from the group consisting of;

beta mercaptopropionate, mercaptoacetate, alkane thiols or any combination thereof;

a surface additive for reducing surface tension; and

a stabilizer;

wherein said composition has a first viscosity of about 20–

500 cps at a first temperature, wherein said first temperature is ambient temperature, and a second viscosity lower than 20 cps at a second temperature wherein said second temperature is higher than said first temperature; and

wherein, after irradiation, said composition results in a solid or semi solid material.

2. The composition according to claim 1, further comprising water.

3. The composition according to claim 1, further comprising at least one photo-initiator.

4. The composition according to claim 1, wherein said curable component is a (meth)acrylic component.

5. The composition according to claim 4, wherein said (meth)acrylic component is a (meth)acrylic monomer, a (meth)acrylic oligomer, a (meth)acrylic crosslinker or a combination thereof.

6. The composition according to claim 1, further comprising a water miscible component that is, after irradiation or curing, capable of dissolving or swelling upon exposure to water, to an alkaline or acidic water solution or to water detergent solution.

7. The composition according to claim 6, wherein said water miscible component is a (meth)acrylated urethane oligomer derivative of polyethylene glycol, a partially (meth)acrylated polyol oligomer, a (meth)acrylated oligomer having hydrophillic substituents, polyethylene glycol mono or di (meth)acrylated, acrylamide or any combination thereof.

8. The composition according to claim 7, wherein said hydrophilic substituents are acidic substituents, amino substituents, hydroxy substituents, ionic substituents or any combination thereof.

9. The composition according to claim 1, further comprising a molecule having one or more vinyl ether substituents.

10. The composition according to claim 1, wherein said non-curable component is polyethylene glycol, methoxypolyethylene glycol, glycerol, ethoxylated polyol, propylene glycol or any combination thereof.

11. The composition according to claim 1, wherein said non-curable component is a non-water miscible compound.

12. The composition according to claim 11, wherein said non-water miscible compound is paraffin oil.

13. The composition according to claim 1, further comprising a filler.

14. The composition according to claim 1, further comprising a pigment, a dye or a combination thereof.

15. The composition according to claim 1, further comprising a component able to produce gas upon exposure to water or to an alkaline or acidic water solution.

16. The composition according to claim 1, wherein after irradiation said solid or semi-solid material may swell, break down or dissolve upon exposure to water or to an alkaline or acidic water solution or to water detergent solution.

17. The composition according to claim 1, wherein said solid or semi-solid material is formulated as a hydrophilic cured resin with weak mechanical properties that can be easily pulverized by hand or using water.

18. The composition according to claim 1, wherein said solid or semi-solid material resulting from said radiation is soluble in water.

19. A composition suitable for support in building a three-dimensional object, said composition comprising:

a non-curable component;

a curable component, wherein said non-curable component is not reactive with said curable component,

a component able to produce gas upon exposure to water or to an alkaline or acidic water solution; and

a surface-additive for reducing surface tension; and

a stabilizer;

wherein said composition has a first viscosity of about 20–

500 cps at ambient temperature and a second viscosity lower than 20 cps at a temperature higher than the ambient temperature; and

wherein, after irradiation, said composition results in a solid or semi solid material.

20. The composition according to claim 19, wherein the component able to produce gas is sodium bicarbonate, calcium carbonate or a combination thereof.

21. The composition according to claim 19, further comprising water.

22. The composition according to claim 19, further comprising at least one photo-initiator.

23. The composition according to claim 19, wherein said curable component is a (meth)acrylic component.

24. The composition according to claim 23, wherein said (meth)acrylic component is a (meth)acrylic monomer, a (meth)acrylic oligomer, a (meth)acrylic crosslinker or a combination thereof.

25. The composition according to claim 19, further comprising a water miscible component that after irradiation or curing is capable of dissolving or swelling upon exposure to water, to an alkaline or acidic water solution or to water detergent solution.

26. The composition according to claim 25, wherein said water miscible component is a (meth)acrylated urethane oligomer derivative of polyethylene glycol, a partially (meth)acrylated polyol oligomer, a (meth)acrylated oligomer having hydrophillic substituents, polyethylene glycol mono or di (meth)acrylated, acrylamide or any combination thereof.

27. The composition according to claim 26, wherein said hydrophilic substituents are acidic substituents, amino substituents, hydroxy substituents, ionic substituents or any combination thereof.

28. The composition according to claim 19, further comprising a molecule having one or more vinyl ether substituents.

29. The composition according to claim 19, wherein said non-curable component is polyethylene glycol, methoxypolyethylene glycol, glycerol, ethoxylated polyol, propylene glycol or any combination thereof.

30. The composition according to claim 19, wherein said non-curable component is a non-water miscible compound.

31. The composition according to claim 30, wherein said non-water miscible compound is paraffin oil.

32. The composition according to claim 19, further comprising a filler.

33. The composition according to claim 19, further comprising a sulfur-containing component.

34. The composition according to claim 19, further comprising a pigment, a dye or a combination thereof.

35. The composition according to claim 19, wherein after irradiation said solid or semi-solid material may swell, break down or dissolve upon exposure to water or to an alkaline or acidic water solution or to water detergent solution.

36. The composition according to claim 19, wherein said solid or semi-solid material is formulated as a hydrophilic cured resin with weak material mechanical properties that can be easily pulverized by hand or using water.

37. The composition according to claim 19, wherein said solid or semi-solid material resulting from said radiation is soluble in water.