Preparation of polysiloxane polyalkyleneglycol brush copolymers

US11879037B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Andrea Gutacker · Langenfeld, DE
• Johann Klein · Goldkronach, DE
• Annika Dietrich · Rostock, DE
• Esteban Mejia · Rostock, DE
• Therese Hemery · Wiesbaden, DE
• Nayereh Mohebbati · Rostock, DE

Key dates

• Filing date: Jun 3, 2021
• Grant date: Jan 23, 2024
• Expiry date: Sep 2, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J183/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates a hydroxyl-functionalized unimodal polysiloxane polyalkyleneglycol brush copolymer of the structure [A(-X—B)]s, wherein: A represents said polysiloxane backbone; B represents said polyalkyleneglycol side chain; X is a linker group characterized by including the moiety Si—C—C— of which said Si is a part of the polysiloxane backbone A; and s is an integer of from 1 to 100, wherein the polysiloxane backbone A contains less than 500 ppm mol % of SiH moiety based on the total moles of the silicon atom which constitutes the polysiloxane backbone, and said copolymer has a polydispersity index of from 1.3 to 5.0; and a method for producing said hydroxyl-functionalized unimodal polysiloxane polyalkyleneglycol brush copolymer.