公开(公告)号：US11725077B2

公开(公告)日：2023-08-15

申请号：US17070557

申请日：2020-10-14

申请人： POLYSPECTRA, INC.

发明人： Aditya Balasubramanian ,  Raymond A. Weitekamp

IPC分类号： C08G61/08 ,  B01J31/22 ,  C08K5/07 ,  C08K5/45 ,  C08K5/5313 ,  C08K5/5397 ,  G03F7/00 ,  G03F7/028 ,  G03F7/20

CPC分类号： C08G61/08 ,  B01J31/2278 ,  C08K5/07 ,  C08K5/45 ,  C08K5/5313 ,  C08K5/5397 ,  G03F7/0037 ,  G03F7/028 ,  G03F7/2004 ,  B01J2231/543 ,  B01J2531/821 ,  C08G2261/3321 ,  C08G2261/374 ,  C08G2261/418

摘要： Described herein are compositions and methods for processing photopolymers based on olefin metathesis. The compositions and methods comprise latent ruthenium complexes and photoacids and/or photoacid generators.

公开(公告)号：US12036078B2

公开(公告)日：2024-07-16

申请号：US17399368

申请日：2021-08-11

申请人： POLYSPECTRA, INC.

发明人： Raymond A. Weitekamp ,  Aditya Balasubramanian

IPC分类号： A61C13/00 ,  A61K6/62 ,  A61K6/887 ,  B29C64/124 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B29L31/00

CPC分类号： A61C13/0013 ,  A61C13/0019 ,  A61K6/62 ,  A61K6/887 ,  B29C64/124 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B29L2031/753 ,  C08G2261/418

摘要： The present disclosure relates to a method for generating a dental product or an orthodontic product. The method may comprise (a) providing a mixture comprising (i) a latent ruthenium (Ru) complex; (ii) an initiator; (iii) a sensitizer that sensitizes said initiator; and (iv) at least one polymer precursor; and (b) exposing the mixture to electromagnetic radiation to activate the initiator, wherein upon activation, the initiator reacts with the latent Ru complex to generate an activated Ru complex, which activated Ru complex reacts with the at least one polymer precursor to generate at least a portion of a final product of the dental product or the orthodontic product, wherein the at least the portion of the final product of the dental product or the orthodontic product comprises a polymer generated from the at least one polymer precursor.

公开(公告)号：US20220110728A1

公开(公告)日：2022-04-14

申请号：US17399368

申请日：2021-08-11

申请人： POLYSPECTRA, INC.

发明人： Raymond A. Weitekamp ,  Aditya Balasubramanian

IPC分类号： A61C13/00 ,  A61K6/62 ,  A61K6/887 ,  B33Y10/00 ,  B29C64/124 ,  B29C64/35 ,  B33Y40/20

摘要： Described herein are compositions and methods for generating dental products or orthodontic products. The compositions and methods comprise latent ruthenium complexes and photoacids and/or photoacid generators.

公开(公告)号：US20200183276A1

公开(公告)日：2020-06-11

申请号：US16784790

申请日：2020-02-07

申请人： California Institute of Technology ,  PolySpectra, Inc.

发明人： Raymond A. Weitekamp

IPC分类号： G03F7/029 ,  B01J31/00 ,  G03F7/20 ,  G03F7/00 ,  G03F7/095 ,  G03F7/027 ,  G03F7/004 ,  C07F15/00 ,  B01J23/46

摘要： The present disclosure is directed to photosensitive compositions ‘Fischer-type’ ruthenium carbene catalysts containing chelated 2,2′-bipyridine ligands and methods of using the same. These catalysts are surprisingly active even when using relatively low intensity diode light sources. The 2,2′-bipyridine-chelated ruthenium photocatalysts show reactivity at substantially lower exposure levels than other photoactive chelating dinitrogen ligands of similar structure. The present disclosure is further directed to novel photosensitive compositions, their use as photoresists, and methods related to patterning polymer layers on substrates.