IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0922747
(2006-06-29)
|
등록번호 |
US-7815835
(2010-11-08)
|
우선권정보 |
AT-A 1106/2005(2005-06-30) |
국제출원번호 |
PCT/AT2006/000271
(2006-06-29)
|
§371/§102 date |
20080123
(20080123)
|
국제공개번호 |
WO07/002965
(2007-01-11)
|
발명자
/ 주소 |
- Stampfl, Jürgen
- Gruber, Heinrich
- Lichtenegger, Helga
- Liska, Robert
- Inführ, Robert
|
출원인 / 주소 |
- Technische Universitat Wien
|
대리인 / 주소 |
Drinker Biddle & Reath LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
The invention relates to a method for producing three-dimensional objects, comprising producing a three-dimensional structure by sequential selective curing of layers of a composition curable with visible and/or ultraviolet light into a solid polymeric material by sequential exposure of the individu
The invention relates to a method for producing three-dimensional objects, comprising producing a three-dimensional structure by sequential selective curing of layers of a composition curable with visible and/or ultraviolet light into a solid polymeric material by sequential exposure of the individual layers to UV and/or visible light, whereafter a three-dimensional object is produced by use of the three-dimensional structure thus formed, followed by removing the three-dimensional structure from or of the three-dimensional object, characterized in that removing the three-dimensional structure is accomplished by chemically cleaving the polymeric material as well as simultaneously or subsequently dissolving the material in a solvent or mixed solvent and/or melting the material.
대표청구항
▼
The invention claimed is: 1. A method for producing three-dimensional objects, comprising: producing a three-dimensional structure by sequential selective curing of layers of a composition curable with visible and/or ultraviolet light into a solid polymeric material by sequential exposure of the in
The invention claimed is: 1. A method for producing three-dimensional objects, comprising: producing a three-dimensional structure by sequential selective curing of layers of a composition curable with visible and/or ultraviolet light into a solid polymeric material by sequential exposure of the individual layers of said polymeric material to UV and/or visible light, producing a three-dimensional object on or inside the three-dimensional structure thus formed, and removing the three-dimensional structure from on or inside the three-dimensional object, by chemically cleaving the polymeric material and, simultaneously or subsequently, dissolving the polymeric material in a solvent or mixed solvent, and/or melting the material. 2. The method of claim 1, wherein the three-dimensional structure forms an original mold wherein or whereon a casting mold representing the three-dimensional object is molded. 3. The method of claim 1, wherein the three-dimensional structure forms a casting mold wherein or whereon the three-dimensional object is molded. 4. The method of claim 1, wherein the polymeric material is dissolved in a solvent, and the solvent is selected from the group consisting of tetrahydrofuran, dioxane, ethyl acetate, toluene, and mixtures of two or more thereof. 5. The method of claim 1, wherein the polymeric material is dissolved in a solvent and the solvent is a substantially anhydrous solvent. 6. The method of claim 1, wherein cleaving the polymeric material is accomplished by use of at least one acid or base. 7. The method of claim 6, wherein the base is selected from the group consisting of butylamine, hexylamine, octylamine, and mixtures of two or more thereof. 8. The method of claim 6, wherein the acid is selected from the group consisting of formic acid, acetic acid, methanesulfonic acid, and mixtures of two or more thereof. 9. The method of claim 1, wherein the composition which is curable with visible and/or ultraviolet light into a solid polymeric material comprises (a) 20 to 90% by weight of at least one compound of the general formula CH2═C(R′)—X wherein R′ is hydrogen or a CH3 group, X is —CO—OR1, —CONR1R2, —O—CO—R1, —OR1, —C6H5 or —Z—R—Y, wherein R1 and R2 independently represent branched alkyl radicals containing 3 to 20 carbon atoms; 6- to 10-membered cycloaliphatic radicals which may be optionally substituted with one or more linear or branched alkyl groups and which may optionally contain one or more heteroatoms, as ring members; cycloaliphatic radicals containing 6 to 20 carbon atoms, bridged with at least one linear or branched alkylene group; or aromatic radicals containing 6 to 30 carbon atoms, Z is —CO—O— or —CO—NH—, R is a linear or branched alkylene radical containing 1 to 20 carbon atoms; a cycloaliphatic radical containing 6 to 10 carbon atoms; or an aromatic radical containing 6 to 30 carbon atoms, and Y is —NR1R2, —O—CO—NR1R2, —NH—CO—OR1, —NH—CO—R1, —O—CO—R1, —CO—OR1, —CO—NHR1 or —OR1; (b) 5 to 50% by weight of at least one cleavable crosslinker; (c) 0.01 to 5% by weight of at least one initiator; (d) 0 to 5% by weight of at least one co-initiator; and (e) 0 to 70% by weight of one or more additives, said additives being selected from the group consisting of fillers, stabilizers, viscosity modifiers, and solvents. 10. The method of claim 9, wherein, in constituent (a), X is —CO—OR1 or —CONR1R2, wherein R1 and R2 independently represent branched alkyl radicals containing 3 to 10 carbon atoms; 6- to 10-membered cycloaliphatic radicals which may optionally contain one or more heteroatoms, as ring members; cycloaliphatic radicals containing 6 to 16 carbon atoms, bridged with at least one linear or branched alkylene group; or —C6H5. 11. The method of claim 9 wherein constituent (a) is selected from the group consisting of isobutyl methacrylate, 2-ethylhexylacrylate, cyclohexyl acrylate, isobornyl acrylate, diisobutylacrylamide, cyclohexylacrylamide, isobornylacrylamide, N-acrylpiperidine, and N-methyl-N-cyclohexylacrylamide. 12. The method of claim 9, wherein at least one cleavable crosslinker is selected from the group consisting of methacrylic anhydride, bis(methacryloyloxy)dimethylsilane, bis(methacryloyloxy)tetramethyldisiloxane, and dimethylsilylen-bis(oxyethylene methacrylate). 13. The method of claim 9, wherein the composition is curable into a solid polymeric material soluble in organic solvents. 14. The method of claim 9, wherein the composition is curable into an acid- or base-cleavable polymeric material. 15. The method of claim 9, wherein the composition is curable to a polymeric material that, optionally after chemically cleaving at least one bond of the at least one cleavable crosslinker, is meltable. 16. The method according to claim 9, wherein the 6- to 10-membered cycloaliphatic radical comprising R1 or R2 contains one, two or three heteroatoms. 17. The method according to claim 10, wherein the 6- to 10-membered cycloaliphatic radical comprising R1 or R2 contains one or two heteroatoms.
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