Patent · US Active

Method for preparing a functionalized polyorganosiloxane

US12371536B2 · kind B2 · utility

0Cited by

60References

20Claims

0Family size

Assignee

Dow Silicones Corporation · US

Inventors

Michael Telgenhoff · Midland, US
Eric Jude Joffre · Midland, US
Nanguo Liu · Midland, US

Key dates

Filing date	Mar 14, 2024
Grant date	Jul 29, 2025
Priority date	—
Expiry date	Mar 14, 2044

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L83/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A method for preparing functionalized polyorganosiloxanes is disclosed. The method includes 1) combining starting materials including A) a boron-containing Lewis acid catalyst, and B) an organosilicon compound having an average, per molecule of at least 1 silicon bonded groups of the formula —OR2; wherein each R2 is an independently selected monovalent hydrocarbon group of 1 to 6 carbon atoms, thereby forming a catalyzed mixture; and thereafter 2) adding the catalyzed mixture into a starting material including C) an organohydrogensiloxane having at least 1 silicon bonded hydrogen atom per molecule, thereby preparing a product comprising the functionalized polyorganosiloxane and a by-product comprising HR2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.