公开(公告)号：US20210222038A1

公开(公告)日：2021-07-22

申请号：US17051336

申请日：2019-04-25

Applicant: BASF SE

Inventor： Kevin PAYNE ,  Afsaneh NABIFAR ,  John David CAMPBELL ,  Ulrike LICHT

IPC: C09J133/14 ,  C09J7/38 ,  C08F2/48 ,  C08F2/06 ,  C08F2/02

Abstract: A process for continuously preparing a polymer by free-radical polymerization, the process includes: continuously feeding to a reactor a mixture including about 20 wt % to about 96 wt % of a vinylic monomer, the vinylic monomer comprising a styrenic monomer, a (meth)acrylic monomer, or a mixture thereof, greater than 0 wt % to about 0.25 wt % of a polymerization initiator, and about 4 wt % to about 80 wt % of a reaction solvent; maintaining the reactor at a temperature from about 120° C. to about 190° C.; and collecting the polymer; where the polymer has a weight average molecular weight (Mw) from 20,000 g/mol to about 300,000 g/mol.

公开(公告)号：US20230058601A1

公开(公告)日：2023-02-23

申请号：US17785930

申请日：2020-12-18

Applicant: BASF SE

Inventor： Roosevelt WHITE ,  Sean Raymond GEORGE ,  Joshua C. SPEROS ,  John David CAMPBELL

IPC: C08F265/06

Abstract: The presently claimed invention relates to a polymer emulsion and a process for preparing a polymer emulsion. Particularly, the presently claimed invention relates to a process for preparing a polymer emulsion with high solids content.

公开(公告)号：US20220332877A1

公开(公告)日：2022-10-20

申请号：US17851601

申请日：2022-06-28

Applicant: BASF SE

Inventor： Sean Raymond GEORGE ,  Michael CUNNINGHAM ,  Gary A. DEETER ,  John David CAMPBELL ,  Connor SANDERS ,  Bernd RECK

IPC: C08F293/00 ,  C08F212/08 ,  C08F287/00

Abstract: A copolymer includes a hydrophobic head segment and a random copolymer tail segment comprising hydrophobic blocks and ionizable blocks. Emulsion polymerization systems incorporate the copolymer as a surfactant.