Composition including curable fluoropolymer and curative and methods of making and using them

US12312426B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Tatsuo Fukushi · Woodbury, US
• Tamon Aoki · Tokyo, JP
• Qilin Chan · Woodbury, US
• Miguel A. Guerra · Woodbury, US
• Klaus Hintzer · Woodbury, US
• Florian D. Jochum · Neuötting, DE
• Michael H. Mitchell · Edina, US
• Allen M. Sohlo · Litchfield, US
• Yuta Suzuki · Tsukuba, JP

Key dates

• Filing date: Dec 17, 2019
• Grant date: May 27, 2025
• Expiry date: Jan 4, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The composition includes a curable fluoropolymer having nitrogen-containing cure sites and a curative including an organo onium cation and an anion represented by Formula (I) or Formula (II). The composition is free of metal cations or has not more than 20 parts per million metal cations and free of silicon dioxide or has less than 0.5 percent by weight silicon dioxide, based on the total weight of the composition. In some cases, the composition consists of the curable fluoropolymer and the curative. Shaped articles including the composition, a fluoroelastomer prepared by curing the composition, a method of making a fluoroelastomer article, and a process for making the composition are also described.