Soluble material and process for three-dimensional modeling
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08L-031/02
C08L-033/12
C08F-020/06
C08F-118/02
B06B-001/02
출원번호
UP-0898814
(2004-07-26)
등록번호
US-7754807
(2010-08-02)
발명자
/ 주소
Priedeman, Jr., William R.
Brosch, Andrea L.
출원인 / 주소
Stratasys, Inc.
대리인 / 주소
Westman, Champlin & Kelly, P.A.
인용정보
피인용 횟수 :
35인용 특허 :
70
초록
The present invention is a composition for making a three-dimensional object. The composition comprises a plasticizer and a base polymer, where the base polymer comprises a carboxylic acid, where the composition is soluble in an alkaline solution.
대표청구항▼
The invention claimed is: 1. A feedstock for making a support structure for a three-dimensional object using an additive processing technique, the feedstock having a composition comprising at least one plasticizer and at least one copolymer, wherein each of the at least one copolymer is derived fro
The invention claimed is: 1. A feedstock for making a support structure for a three-dimensional object using an additive processing technique, the feedstock having a composition comprising at least one plasticizer and at least one copolymer, wherein each of the at least one copolymer is derived from monomers comprising at least one carboxylic acid and at least one alkyl methacrylate, wherein the composition is soluble in an alkaline aqueous solution, and wherein the feedstock has a filament geometry configured to be received by a filament-fed extrusion system configured to make the support structure in coordination with the three-dimensional object using the additive processing technique. 2. The feedstock of claim 1, wherein the at least one plasticizer constitutes from about 10% by weight to about 30% by weight of the composition, based on a total weight of the composition. 3. The feedstock of claim 1, wherein the composition consists essentially of the at least one plasticizer and the at least one copolymer. 4. The feedstock of claim 1, wherein the at least one plasticizer is selected from a group consisting of p-t-butylphenyl diphenyl phosphate; butyl benzyl phthalate; 7-(2,6,6,8-teftamethyl-4-oxa-3-oxononyl) benzyl phthalate; C7/C9 alkyl benzyl phthalate; 2-ethylhexyl diphenyl phosphate; isodecyl diphenyl phosphate, and combinations thereof. 5. The feedstock of claim 1, wherein the at least one carboxylic acid comprises methacrylic acid. 6. The feedstock of claim 5, wherein the at least one carboxylic acid constitutes from about 15.0% to about 60.0% by weight of the monomers for the copolymer, based on a total weight of the monomers for the copolymer. 7. The feedstock of claim 1, wherein the filament geometry has an average diameter of about 0.07 inches. 8. The feedstock of claim 1, wherein the alkyl methacrylate comprises a methyl methacrylate. 9. The feedstock of claim 1, wherein the composition exhibits a glass transition temperature of about 100° C. or greater. 10. The feedstock of claim 1, wherein the composition exhibits a melt flow index ranging from of about 1 gram/10 minutes to about 10 grams/10 minutes when tested pursuant to ASTM D1238 under a 1.2 kilogram load at 230° C. 11. The feedstock of claim 10, wherein the composition exhibits a melt flow index ranging from of about 5 grams/10 minutes to about 10 grams/10 minutes when tested pursuant to ASTM D1238 under a 1.2 kilogram load at 230° C. 12. A feedstock for making a support structure for a three-dimensional object using an additive processing technique, the feedstock having a composition comprising at least one copolymer and at least one a plasticizer, wherein the at least one copolymer is derived from monomers comprising methacrylic acid and at least one alkyl methacrylate, wherein the composition is soluble in an alkaline aqueous solution, wherein the composition exhibits a melt flow index of about 10 grams/10 minutes or less when tested pursuant to ASTM D1238 under a 1.2 kilogram load at 230° C., and wherein the feedstock has a filament geometry configured to be received by a filament-fed extrusion system configured to make the support structure in coordination with the three-dimensional object using the additive processing technique. 13. The feedstock of claim 12, wherein the filament geometry has an average diameter of about 0.07 inches. 14. The feedstock of claim 12, wherein the plasticizer constitutes from about 10% by weight to about 30% by weight of the composition, based on a total weight of the composition. 15. The feedstock of claim 12, wherein the composition exhibits a glass transition temperature of about 100° C. or greater. 16. The feedstock of claim 12, wherein the composition exhibits a melt flow index ranging from of about 5 grams/10 minutes to about 10 grams/10 minutes when tested pursuant to ASTM D1238 under a 1.2 kilogram load at 230° C. 17. The feedstock of claim 12, wherein the composition consists essentially of the at least one copolymer and the at least one plasticizer. 18. The feedstock of claim 12, wherein the at least one alkyl methacrylate comprises a methyl methacrylate. 19. The feedstock of claim 18, wherein for each of the at least one copolymer, the methacrylic acid constitutes from about 15.0% to about 60.0% by weight of the copolymer, based on a total weight of the copolymer. 20. A method of forming a feedstock for making a support structure, the method comprising: providing at least one copolymer, wherein each of the at least one copolymer is derived from monomers comprising at least one carboxylic acid and at least one alkyl methacrylate, the at least one carboxylic acid constituting from about 15% by weight to about 60% by weight of the monomers; combining the at least one copolymer with at least one plasticizer to form a composition, the at least one plasticizer constituting from about 10% by weight to about 30% by weight of the composition, wherein the composition is soluble in an alkaline aqueous solution; and forming the feedstock from the compound, the formed feedstock having a filament geometry that is configured to be received by a filament-fed extrusion system configured to make the support structure in coordination with a three-dimensional object using an additive processing technique. 21. The method of claim 20, and further comprising drying the formed feedstock to remove moisture from the formed feedstock. 22. The method of claim 20, and further comprising winding successive portions of the formed feedstock onto a spool that is configured to supply the formed feedstock to the filament-fed extrusion system. 23. The method of claim 20, and further comprising drying the at least one copolymer prior to combining the at least one copolymer with the at least one plasticizer. 24. The method of claim 20, wherein the composition consists essentially of the at least one copolymer and the at least one plasticizer. 25. The method of claim 20, wherein the at least one carboxylic acid comprises methacrylic acid. 26. The method of claim 20, wherein the at least one alkyl methacrylate comprises a methyl methacrylate. 27. The method of claim 20, wherein the filament geometry has an average diameter of about 0.07 inches. 28. The method of claim 20, wherein the composition exhibits a glass transition temperature of about 100° C. or greater. 29. The method of claim 20, wherein the composition exhibits a melt flow index ranging from of about 1 gram/10 minutes to about 10 grams/10 minutes when tested pursuant to ASTM D1238 under a 1.2 kilogram load at 230° C.
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