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)[G
DMP];
三羟甲基丙烷三(
3-巯基丙酸酯)[TM
PMP];
季戊四醇四(
3-巯基丙酸酯)[PE
TMP]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)。