摘要 |
A blowing agent blend for making thermoplastic polymer foams comprises methy l formate. The blowing agent blend can further comprise at least one co-blowin g agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon wit h polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam ca n be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend can comprise any combination of methyl formate and one or more c o- blowing agents. The methyl formate-based blowing agent blends produce stable foams for various applications, including containers, packaging systems, as well as insulation boards and building materials. A process for the preparation of such foams is also provided.
|
申请人 |
ZAFAR, MOHAMMAD;PACTIV CORPORATION |
发明人 |
ZAFAR, MOHAMMAD;CASTNER, GLENN C.;BRACKMAN, JOSEPH A.;HANDA, YASH PAUL |