Polyethers based on oxetanes for use as wetting agents and as dispersants and production thereof

US11015026B2 · kind B2 · utility

Assignee

• BYK-CHEMIE GMBH · DE

Inventors

• Michael Bessel · Wesel, DE
• Guillaume Wojciech Jaunky · Wesel, DE
• Frederik Piestert · Wesel, DE
• Carsten Nagel · Wesel, DE
• Sandra Sabrina Meyer · Wesel, DE
• Dennis Levering · Wesel, DE

Key dates

• Filing date: Nov 14, 2017
• Grant date: May 25, 2021
• Expiry date: Jun 25, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2310/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to polyesters of the following general formula, wherein the residues R1, R2, R3, R4, R5a (as a special case of residue R5), R6, R7 and R8 are free of carboxy, hydroxy, thiol, imino, and primary and secondary amino groups, the residues R5b (as a special case of R5) and R9 contain hydroxyl groups, 10 to 100 mol % of which can be present in salt form analogously to polymers or otherwise capped, u=0 or 1, v=1 to 60 and w=1 to 20. The invention further relates to wetting agents and dispersants that contain the aforementioned polyesters or consist thereof and to a method for producing said wetting agents and dispersants, to the use of the polyesters and reaction products of the method according to the invention as wetting agents and dispersants, and to compositions containing the polyesters, wetting agents and/or dispersants or reaction products of the method according to the invention and particulate solids.