ENLARGED CELL FOAM AND METHOD OF MAKING SAME

专利名称：ENLARGED CELL FOAM AND METHOD OF

MAKING SAME

发明人：SUH, Kyung, W.,WAKABAYASHI,

Masayuki,VO, Chau, V.,PAQUET, Andrew, N.

申请号：EP94903474.0申请日：19931207公开号：EP0681522A1公开日：19951115

摘要：Disclosed is a process for making a closed-cell, alkenyl aromatic polymer foamstructure having enlarged cell size. In the process, an alkenyl aromatic polymer materialis heated to form a melt polymer material; a non-waxy cell size enlarging agent isincorporated into the melt polymer material; a blowing agent is incorporated into themelt polymer material at an elevated pressure to form a foamable gel; and the foamablegel is then expanded in a zone of lower pressure to form the foam structure. Theenlarging agent is present in an amount sufficient to enlarge the stabilized cell size ofthe formed foam structure by 20 percent or more over a corresponding foam structuremade without the enlarging agent. Further, the enlarging agent is incorporated in aquantity such that the formed foam structure has physical properties similar to thecorresponding foam structure. Further, disclosed is a foam structure corresponding tothe above.

申请人：THE DOW CHEMICAL COMPANY

地址：2030 Dow Center, Abbott Road Midland, Michigan 48640 US

国籍：US

代理机构：Casalonga, Axel, et al

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