Patent · US Active

Live poly(n-vinyl lactam) reactive stabilizers for dispersed phase polymerization

US9487598B2 · kind B2 · utility

0Cited by
4References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 30, 2013
Grant dateNov 8, 2016
Priority date
Expiry dateJan 30, 2033

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08F2438/03
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

The present invention concerns a method for preparing a polymer comprising a step (EI) for dispersed phase polymerization in the presence of a reactive stabiliser, wherein the following are brought into contact in an aqueous phase:—at least one ethylenically unsaturated monomer; —at least one source of free radicals; and—a reactive stabiliser comprising a polymer chain including monomer units (N-vinyl lactam) and a thiocarbonylthio-S group (C═S)—.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.