Silicone-polyester copolymer, sealants comprising same, and related methods

US12146034B2 · kind B2 · utility

Assignees

• Dow Silicones Corporation · US
• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Emmanuel Duquesne · Midland, US
• Martin Grasmann · Midland, US
• Brian Harkness · Midland, US
• William Johnson · Newark, US
• Bindu Krishnan · Lake Jackson, US
• Elizabeth Santos · Midland, US
• Justin Scherzer · Midland, US
• Jeanette Young · Midland, US
• Bizhong Zhu · Midland, US

Key dates

• Filing date: Dec 16, 2019
• Grant date: Nov 19, 2024
• Expiry date: Nov 21, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2190/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A silicone-polyester copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyester moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0≤j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polyester copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polyester copolymer and a condensation-reaction catalyst.