专利检索 ap:("RICOH COMPANY, LTD.") AND inv:"Hiroshi Iwata" 第 1 页

1.

发明授权
Active-energy-ray-curable liquid composition, three-dimensional object forming material set, method for producing three-dimensional object, and three-dimensional object producing apparatus 有权

公开(公告)号：US11078374B2

公开(公告)日：2021-08-03

申请号：US16308709

申请日：2017-06-05

申请人： RICOH COMPANY, LTD.

发明人： Hiroyuki Naito , Hiroshi Iwata , Yoshihiro Norikane , Yoshihito Shimada , Kenji Sugiura

IPC分类号： C08F2/46 , C08F2/50 , C08G61/04 , C09D11/101 , B33Y70/00 , B33Y10/00 , B33Y30/00 , B29C64/112 , C09D11/30 , C08L71/02 , B29C64/124 , C09D11/033 , C09D11/107 , C09D11/36

摘要： Provided is an active-energy-ray-curable liquid composition containing a monomer (A) having a hydrogen-bonding capacity and a solvent (B) having a hydrogen-bonding capacity, wherein the active-energy-ray-curable liquid composition satisfies conditions below, a cured product obtained by irradiating the active-energy-ray-curable liquid composition with 500 mJ/cm2 of an active energy ray is a solid having a compressive stress of 2.0 kPa or greater when compressed by 1% at 25 degrees C., and the cured product has a water decaying property.

2.

发明授权
Hydrogel object and method of manufacturing hydrogel object 有权

公开(公告)号：US11904058B2

公开(公告)日：2024-02-20

申请号：US16557570

申请日：2019-08-30

申请人： RICOH COMPANY, LTD.

发明人： Hiroshi Iwata , Tatsuya Niimi , Yoshihiro Norikane , Takashi Matsumura

IPC分类号： A61L15/60 , B33Y70/00 , C08K5/05 , B29C64/112 , C08K5/053 , B33Y80/00 , G09B23/30 , B33Y10/00 , B29L31/00 , B29C64/40

CPC分类号： A61L15/60 , B29C64/112 , B33Y70/00 , B33Y80/00 , C08K5/05 , C08K5/053 , G09B23/30 , B29C64/40 , B29L2031/7532 , B33Y10/00 , C08K5/053 , C08L33/26 , C08K5/05 , C08L33/26 , C08K3/346 , C08L33/26

摘要： A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.