SIOC-BASED POLYETHERSILOXANES Russian patent published in 2024 - IPC C08G77/14 C08G77/46 C08G77/10 

FIELD: chemistry.

SUBSTANCE: invention relates to branched polyether siloxanes, methods for production thereof and use thereof. Disclosed are branched SiOC-linked polyethersiloxanes of formula (I), where R¹ denotes an alkyl residue with 1–4 carbon atoms or a phenyl residue, b has value from 1 to 10, a has value from 1 to 200, preferably from 10 to 100, and has value from 3 to 70, when b is greater than or equal to 1 and less than or equal to 4, or has value from 3 to 30, when b is greater than 4, and R² denotes identical or different polyether residues, however, at least one residue R² is a residue of a structural element of formula (II), where p denotes at least 2, preferably denotes number from 2 to 6, particularly preferably denotes 3. Also disclosed is a method of producing said polyether siloxane and versions of its use.

EFFECT: said branched SiOC-bonded polyether siloxanes exhibit good antifoaming properties and inhibit or prevent air entrapment in the paint material without disturbing wetting during application on the surface and stability during storage.

17 cl, 1 dwg, 7 tbl, 12 ex