Method of preparing a polyrotaxane and polyrotaxane

US11248092B2 · kind B2 · utility

Assignee

• UNIVERSITAT DES SAARLANDES · DE

Inventors

• Budiman Ali · Riegelsberg, DE
• Carsten Becker-Willinger · Riegelsberg, DE
• Gisela Heppe · Riegelsberg, DE
• Nina Mueller · Riegelsberg, DE
• Peter William de Oliveira · Riegelsberg, DE
• Gerhard Wenz · Sankt Ingbert, DE
• Gergely Kali · Riegelsberg, DE
• Harley Eisenbarth · Sulzbach/Saar, DE
• Devid Hero · Losheim am See, DE
• David Hafner · Saarlouis, DE
• Jessica Hilschmann · Riegelsberg, DE

Key dates

• Filing date: Dec 21, 2017
• Grant date: Feb 15, 2022
• Expiry date: Dec 21, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In one embodiment the invention relates to a method of preparing a polyrotaxane, said method comprising: performing a radical copolymerization of at least (a) a first polymerizable monomer having a stopper group, and of at least (b) a second polymerizable hydrophobic monomer, wherein said second monomer is complexed by a ring-shaped molecule, and of at least (c) a third polymerizable hydrophilic monomer; wherein during said copolymerization a copolymer threading said ring-shaped molecule is formed, wherein during said copolymerization said first monomer having a stopper group is incorporated into the chain of said copolymer at least partially between the ends thereof, and wherein said stopper groups prevent said ring-shaped molecule from disassembling from the copolymer; and wherein the amount of said first monomer having a stopper group is of from 0.1 mol % to 20 mol % based on 100 mol % of the total amount of polymerizable monomers. In another embodiment the invention relates to a method of preparing a polyrotaxane, said method comprising: performing a radical copolymerization of at least (a) a first polymerizable monomer having a stopper group, and of at least (b) a second polym…