公开(公告)号：US20240132711A1

公开(公告)日：2024-04-25

申请号：US18481832

申请日：2023-10-05

申请人： SNF GROUP

发明人： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC分类号： C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20

CPC分类号： C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20 ,  C08L2205/025

摘要： This invention relates to a polymer composition comprising a water-soluble anionic P2 polymer obtained by radical polymerization of at least one anionic monomer, in the presence of a water-soluble homopolymer P1 with a weight-average molecular weight of between 5,000 and 100,000 daltons
said water-soluble anionic P2 polymer having a weight-average molecular weight of greater than 100,000 dalton and less than or equal to 40 million daltons,

said water-soluble P1 homopolymer having been prepared from 2-acrylamido-2-methylpropanesulphonic acid in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenylsulphonic acid in salified form.

公开(公告)号：US20240034822A1

公开(公告)日：2024-02-01

申请号：US18349309

申请日：2023-07-10

申请人： SNF Group

发明人： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC分类号： C08F220/58 ,  C08L33/26 ,  C02F1/52 ,  D21H17/45

CPC分类号： C08F220/585 ,  C08L33/26 ,  C02F1/5272 ,  D21H17/455

摘要： Provided is a polymer composition containing a water-soluble cationic copolymer P2 structured in micro-blocks obtained by radical polymerization of at least one non-ionic monomer and at least one cationic monomer, in the presence of a homopolymer P1 having an average molecular weight between 5,000 and 100,000 daltons, the homopolymer P1 having been prepared from 2-acrylamido-2-methylpropane sulphonate in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenyl-sulphonic acid in salified form. Related methods are also provided.