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1. (WO1991005654) STEREOLITHOGRAPHY USING COMPOSITION PROVIDING REDUCED DISTORTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005654 International Application No.: PCT/US1990/003192
Publication Date: 02.05.1991 International Filing Date: 04.06.1990
IPC:
B29C 35/08 (2006.01) ,B29C 67/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
35
Heating, cooling or curing, e.g. crosslinking, vulcanising; Apparatus therefor
02
Heating or curing, e.g. crosslinking, vulcanising
08
by wave energy or particle radiation
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67
Shaping techniques not covered by groups B29C39/-B29C65/93
Applicants:
DESOTO, INC. [US/US]; 1700 South Mount Prospect Road Box 5030 Des Plaines, IL 60017, US
Inventors:
KRAJEWSKI, John, J.; US
MURPHY, Edward, J.; US
ANSEL, Robert, E.; US
Agent:
KATZ, Martin, L.; Dressler, Goldsmith, Shore, Sutker & Milnamow, Ltd. 1800 Prudential Plaza Chicago, IL 60601 , US
Priority Data:
421,39813.10.1989US
429,56831.10.1989US
Title (EN) STEREOLITHOGRAPHY USING COMPOSITION PROVIDING REDUCED DISTORTION
(FR) STEREOLITHOGRAPHIE UTILISANT UNE COMPOSITION OFFRANT UNE DISTORSION REDUITE
Abstract:
(EN) An ultraviolet-curable liquid composition adapted to cure rapidly to a lightly cross-linked solvent-swellable three dimensional complexly-shaped polymeric thin-walled element constituted by heat-softenable solid polymer upon exposure to ultraviolet dosage in the range of 1-15 Joules per square centimeter and which possesses reduced distortion comprises, from 20% to 80%, of a resinous polyacrylate or polymethacrylate dissolved in a combination of 10% to 45% of a liquid polyacrylate or polymethacrylate, which is preferably trifunctional, and 10% to 45% of liquid N-vinyl monomer, preferably N-vinyl pyrrolidone. One of the foregoing polyacrylates or polymethacrylates is a polyacrylate and the other is a polymethacrylate so that good cure speed is accompanied by good distortion resistance.
(FR) Composition liquide qui peut être traitée aux ultraviolets, adaptée pour traiter rapidement un élément polymère à parois fines de forme complexe à trois dimensions gonflant sous l'effet d'un solvant et légèrement réticulé, cet élément étant constitué d'un polymère solide se ramollissant à la chaleur lorsqu'il est exposé à un dosage ultraviolet situé dans l'intervalle de 1 à 15 Joules par centimètre carré et possèdant une distorsion réduite, comprend de 20% à 80% d'un polyacrylate résineux ou d'un polyméthacrylate résineux dissous dans une combinaison de 10% à 45% d'un polyacrylate liquide ou d'un polyméthacrylate liquide, qui est préférablement trifonctionnel, et comprend de 10% à 45% d'un monomère liquide N-vinyle, préférablement de la N-vinyle pyrrolidone. Un des précédents polyacrylates ou polyméthacrylates est un polyacrylate et l'autre est un polyméthacrylate de sorte que la rapidité de traitement s'accompagne d'une bonne résistance à la distorsion.
Designated States: AU, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1990058332