Dual curable thiol-ene composition, comprising a polythiol, an unsaturated compound, a photoinitiator and an organic hydroperoxide, as well as a cross-linked polymer sealant prepared therefrom for use in aerospace

US11041049B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• William H. Moser · Windom, US
• Erik M. Townsend · South St. Paul, US
• Brian S. Lam · Minneapolis, US
• Jonathan D. Zook · Stillwater, US
• Susan E. DeMoss · Stillwater, US
• Sheng Ye · Carlsbad, US
• Andrew R. Davis · Catonsville, US
• Michael D. Swan · Lake Elmo, US

Key dates

• Filing date: Jun 27, 2017
• Grant date: Jun 22, 2021
• Expiry date: Jun 27, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2003/1062
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A dual curable thiol-ene composition comprising a polythiol, an unsaturated compound, a photoinitiator, an organic hydroperoxide (thermal initiator) and optionally a nitrogen-containing base, such as e.g. an N-heterocyclic compound (together with the organic hydroperoxide a redox initiator system). A cross-linked polymer prepared therefrom. A method of making such a polymer. A cured sealant comprising such a polymer. The sealant is preferably for use in aerospace.