Thermolatent catalyst and its use in curable compositions

US10773243B2 · kind B2 · utility

Assignee

• PPG Industries Ohio, Inc. · US

Inventors

• Hongying Zhou · Allison Park, US
• Scott J. Moravek · Oil City, US
• Davina J. Schwartzmiller · Rural Valley, US
• Jun Deng · Murrysville, US
• Jonathan T. Martz · Lijsterbesstraat, US

Key dates

• Filing date: Sep 7, 2017
• Grant date: Sep 15, 2020
• Expiry date: Apr 7, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2540/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Tin-containing catalysts are provided comprising a compound of formula I.I: L1, L2, L3, and L4 are each independently selected from —O—, —S—, —OC(═O)—, —OC(═S)—, —SC(═O)—, —SC(═S)—, —OS(═O)2O—, —OS(═O)2— —N(R6)-, and —OP(═O)(R6)-, wherein R6 represents hydrogen or a monovalent aliphatic, araliphatic, cycloaliphatic or aromatic group having up to 20 carbon atoms. R1, R2, R3, R1′, R2′, and R3′ each independently represent a divalent aliphatic, araliphatic, cycloaliphatic or aromatic group having up to 20 carbon atoms; and R4, R5, R4′, and R5′ each independently represent hydrogen or a monovalent residue derived from reaction of a respective N—H group with an isocyanate, an ethylenically unsaturated compound, a lactone, a dilactone, a thiolactone, a lactam, a thiolactam, a carboxylic acid or derivative thereof, or an epoxide. Also provided are curable compositions containing these catalysts and methods of controlling the rate of cure of curable compositions.