- 专利标题: A PHOTOCURABLE RESIN COMPOSITION FOR STEREOLITHOGRAPHIC MANUFACTURING, THREE-DIMENSIONAL ARTICLES PRODUCED WITH SAID COMPOSITION AND A RELATIVE MANUFACTURING METHOD
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申请号: EP17714271.8申请日: 2017-01-27
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公开(公告)号: EP3408708A1公开(公告)日: 2018-12-05
- 发明人: HAGIWARA, Tsuneo , IKETANI, Satoshi
- 申请人: DWS S.R.L.
- 申请人地址: Via Della Meccanica, 21 36016 Thiene (VI) IT
- 专利权人: DWS S.R.L.
- 当前专利权人: DWS S.R.L.
- 当前专利权人地址: Via Della Meccanica, 21 36016 Thiene (VI) IT
- 代理机构: Marchioro, Paolo
- 优先权: ITUB20160408 20160128
- 国际公布: WO2017130153 20170803
- 主分类号: G03F7/00
- IPC分类号: G03F7/00 ; B29C67/00 ; G03F7/038
摘要:
The invention refers to a liquid photocurable resin composition for stereolithography, comprising (i) at least one radical polymerizable compound (A) represented by the following general formula (I): R4O—CO—NH—R2—NH—CO—O—R1—O—CO—NH—R3—NH—CO—OR4 (I), wherein R1 is a linear or branched polytetramethylene glycol residue having an average molecular weight from 200 to 3,000 g/mol; R2 is a diisocyanate compound residue; R3 is a diisocyanate compound residue being the same as or different from R2; and R4 is selected from AcrO—CH2—CH2—, (AcrO—CH2)2CH—, (AcrO—CH2)3C—CH2—, AcrO—CH2—CHCH3—, AcrO—CH2—CHC2H5— and (AcrO—CH2)2C(C2H5)CH2—, preferably from AcrO—CH2—CH2— and (AcrO—CH2)2CH—, more preferably is AcrO—CH2—CH2—; wherein Acr is CH2═C(R)—CO— and R is a hydrogen atom or a methyl group; (ii) at least one radically polymerizable organic compound (B) different from compound (A); and (iii) a photosensitive radical polymerization initiator (C), wherein the content of said radical polymerizable compound (A) varies from 5% to 70% by weight based on the total amount of compounds (A) and (B). The invention further describes a corresponding stereolithographic use and method and three-dimensional articles produced therewith.
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