申请人:Inkbit, LLC
公开号:US11208521B2
公开(公告)日:2021-12-28
A composition suitable for 3-D printing comprises, in one embodiment, a photopolymer including one or more thiol monomer, one or more alkene monomer, and a polymerization initiator. In another embodiment, the thiol monomer is selected from the group consisting of: glycol di(3-mercaptopropionate) [GDMP]; trimethylolpropane tris(3-mercaptopropionate) [TMPMP]; pentaerythritol tetrakis(3-mercaptopropionate) [PETMP] and 3,6-dioxa-1,8-octanedithiol [DODT]. In yet another embodiment, the alkene monomer comprises: an allyl-functional urethane/urea monomer synthesized from: an isocyanate moiety and a hydroxyl or amine functional allyl moiety. In still another embodiment, the hydroxyl or amine functional allyl moiety comprises 2-allyloxyethanol, allyl alcohol, and allylamine. In still yet another embodiment, the isocyanate moiety is selected from the group consisting of: isophorone diisocyanate (IDI), hexamethylene diisocyanate (HDI), trimethylhexamethylene diisocyanate (TMHDI), 1,3-bis(isocyanatomethyl)cyclohexane, and dicyclohexylmethane 4,4′-Diisocyanate (HMDI).
在一个实施方案中,适用于 3-D 打印的组合物包括一种光聚合物,其中包括一种或多种硫醇单体、一种或多种烯烃单体和聚合引发剂。在另一个实施方案中,硫醇单体选自以下组别:乙二醇二(3-巯基丙酸酯)[GDMP];三羟甲基丙烷三(3-巯基丙酸酯)[TMPMP];季戊四醇四(3-巯基丙酸酯)[PETMP]和 3,6-二氧杂-1,8-辛二硫醇[DODT]。在另一个实施方案中,烯烃单体包括:由异氰酸酯分子和羟基或胺官能团烯丙基分子合成的烯丙基官能团聚氨酯/脲单体。在另一个实施方案中,羟基或胺官能烯丙基包括 2-烯丙氧基乙醇、烯丙基醇和烯丙基胺。在另一个实施方案中,异氰酸酯分子选自以下组别:异佛尔酮二异氰酸酯(IDI)、六亚甲基二异氰酸酯(HDI)、三甲基六亚甲基二异氰酸酯(TMHDI)、1,3-双(异氰酸基甲基)环己烷和二环己基甲烷 4,4′-二异氰酸酯(HMDI)。