COMPOSITE PARTICLES, COMPOSITIONS AND FOAM COMPOSITIONS CONTAINING COMPOSITE PARTICLES, ARTICLES, AND METHODS OF MAKING AND USING SAME

• Main Authors: LIN, Ying, HEDEGAARD, Aaron T, FISHMAN, Joshua M, KALISH, Jeffrey P, MEREE, Caitlin E, SAHOUANI, Hassan
• Format: Patent
• Language: English; French
• Published: 27.06.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; WORKING-UP

Composite particles are provided including a chemical blowing agent particle encapsulated within a shell including an uncrosslinked thermoplastic material. The uncrosslinked thermoplastic material exhibits at least a certain minimum complex viscosity at a decomposition temperature of the chemical blowing agent particle. Also described are compositions and foam compositions containing the composite particles. Further, articles are provided including the foam compositions, such as a sheet, tape, or hearing protection article. Methods of making and using the foam compositions are additionally described herein. L'invention concerne des particules composites comprenant une particule d'agent de soufflage chimique encapsulée dans une écorce comprenant un matériau thermoplastique non réticulé. Le matériau thermoplastique non réticulé présente au moins une certaine viscosité complexe minimale à une température de décomposition de la particule d'agent de soufflage chimique. L'invention concerne également des compositions et des compositions de mousse contenant les particules composites. L'invention concerne en outre des articles comprenant les compositions de mousse, tels qu'une feuille, une bande ou un article de protection auditive. L'invention concerne de plus des procédés de production et d'utilisation des compositions de mousse.