Process for the preparation of monodisperse polymer particles

US7217762B1 · kind B1 · utility

Assignee

• Invitrogen Corporation · US

Inventors

• Arne Jørgedal · Storslett, NO
• Elin Aksnes · Oslo, NO
• Geir Fonnum · Lørenskog, NO
• Astrid Molteberg · Fetsund, NO
• Rolf Nordal · Lillestrøm, NO
• Henning Pettersen · Lillestrøm, NO
• Tollef Taarneby · Auli, NO
• Solveig Staale · Rasta, NO
• Ellen Weng · Oppegård, NO
• Finn Hansen · Vinstra, NO
• Silje NORDBØ · Oslo, NO
• Oddvar Aune · Trondheim, NO
• Arvid Berge · Trondheim, NO
• John BJØRGUM · Trondheim, NO
• Turid Ellingsen · Longyearbyen, NO
• Arvid Berge · Trondheim, NO
• John Ugelstad · Trondheim, NO
• VIOLA UGELSTAD · Trondheim, NO

Key dates

• Filing date: Apr 10, 2000
• Grant date: May 15, 2007
• Expiry date: Apr 10, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2347/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of monodisperse polymer particles which are formed by contacting monomers with aqueous dispersions comprising monodisperse swellable seed polymers/oligomers, and initiating polymerization in the presence of a steric stabilizer. The resulting swollen seed particles are characterized by the particle mode diameter.