公开(公告)号：US5532279A

公开(公告)日：1996-07-02

申请号：US221752

申请日：1994-04-01

Applicant: Victor B. Barretto ,  Stephen S. Heberling ,  Vernon E. Summerfelt ,  Christopher A. Pohl

Inventor： Victor B. Barretto ,  Stephen S. Heberling ,  Vernon E. Summerfelt ,  Christopher A. Pohl

IPC: B01D15/36 ,  B01J39/26 ,  B01J41/20 ,  B01J47/00 ,  C08J5/20

CPC classification number: B01D15/361 ,  B01J39/26 ,  B01J41/20 ,  B01J47/006 ,  B01J2220/54

Abstract: In accordance with the present invention, an ion-exchange composition has been formed which comprises synthetic resin support particles, dispersant capable of suspending the support particles in an aqueous medium to inhibit or prevent agglomeration, and fine synthetic resin layering particles. In a preferred embodiment, the complex can be formed by contacting a suitable dispersant with monomer in an aqueous solution in which the monomer is insoluble. Under suitable conditions for suspension polymerization, the monomer will polymerize to form resin support particles having dispersant irreversibly attached to those particles. The dispersant is irreversibly attached to the synthetic resin support particles, either by covalent bonding or permanent physical entanglement. The dispersant is also attached to the fine layering particles, either by covalent bonding or electrostatic forces. The result is formation of a support particle-dispersant-layering particle complex.The novel ion-exchange composition can be made by forming a synthetic resin support particle-dispersant complex in which the dispersant is irreversibly attached to the support particles. The complex can then be mixed in aqueous slurry form with fine resin layering particles under conditions suitable to form a resin support particle-dispersant-resin layering particle complex in which the resin layering particles are irreversibly attached to the dispersant. In effect, the dispersant forms an irreversible bridge between the support and layering particles.

Abstract translation: 根据本发明，已经形成了一种离子交换组合物，其包括合成树脂载体颗粒，能够将载体颗粒悬浮在水性介质中以抑制或防止附聚的分散剂和细小的合成树脂层压颗粒。 在优选的实施方案中，络合物可以通过使合适的分散剂与单体在单体不溶的水溶液中接触来形成。 在合适的悬浮聚合条件下，单体将聚合形成具有分散剂不可逆地连接到这些颗粒上的树脂载体颗粒。 分散剂通过共价键或永久性物理缠结不可逆地附着在合成树脂载体颗粒上。 分散剂也通过共价键或静电力连接到细分层颗粒上。 结果是形成载体颗粒 - 分散剂分层颗粒复合物。 新型离子交换组合物可以通过形成其中分散剂不可逆地附着到载体颗粒上的合成树脂载体颗粒 - 分散剂络合物来制备。 然后可以在适于形成树脂分层树脂分层颗粒复合物的条件下，将复合物以水性浆液形式与细树脂分层颗粒混合，其中树脂分层颗粒不可逆地附着到分散剂上。 实际上，分散剂在载体和分层颗粒之间形成不可逆的桥。