公开(公告)号：US11525087B2

公开(公告)日：2022-12-13

申请号：US16812408

申请日：2020-03-09

申请人： PPG Industries Ohio, Inc.

发明人： Cynthia Kutchko ,  Zoubeida Ounaies ,  Hassene Ben Atitallah ,  Nicholas Wyckoff ,  Anil Kumar ,  Romain Stalder ,  David Walters

IPC分类号： C09K19/54 ,  C09K19/38 ,  C09K19/20 ,  H01L41/193 ,  C09K19/30 ,  C09K19/04

摘要： Self-aligned liquid crystal materials and structures are disclosed. The structures can exhibit piezoelectric and flexoelectric properties.

公开(公告)号：US11261265B2

公开(公告)日：2022-03-01

申请号：US16521864

申请日：2019-07-25

申请人： PPG INDUSTRIES OHIO, INC.

发明人： Shanti Swarup ,  Deena M. McHenry ,  David Walters

IPC分类号： C08F2/20 ,  C08F20/18 ,  C08F20/32 ,  C08F20/34 ,  C08F30/08 ,  C08L75/02 ,  C08L75/04 ,  C09D133/06 ,  C09D133/08 ,  C09D133/14 ,  C09D143/04

摘要： The present invention is directed to an acrylic polymer prepared from a reaction mixture comprising: (i) an ethylenically unsaturated monomer comprising hydroxyl functional groups; (ii) an ethylenically unsaturated monomer comprising polydialkylsiloxane groups; (iii) an ethylenically unsaturated monomer comprising carboxylic acid functional groups or amine functional groups; and (iv) a reactive diluent that is reactive with the ethylenically unsaturated monomer (iii). The reactive diluent (iv) is present initially in the reaction mixture as a medium in which the monomers polymerize. The present invention is further directed to aqueous polymeric dispersions prepared therefrom and aqueous, curable film-forming compositions prepared from the dispersions. The curable film-forming compositions are low VOC and are useful in methods of mitigating dirt build-up on a substrate.