Production of encapsulated chemical foaming concentrates

Details Production of encapsulated chemical foaming concentrates Production of encapsulated chemical foaming concentrates

C - Chemistry, Metallurgy

08

J

C08J 9/06 (2006.01) B29B 9/06 (2006.01) B29B 13/06 (2006.01) B29C 44/34 (2006.01) C08J 9/16 (2006.01)

Patent

CA 2135600

2135600 9323463 PCTABS00028 The present invention is directed to the process and apparatus for compounding and pelletizing of chemical foaming agents in a high melt resin carrier and producing unique, uniform encapsulated and pelletized chemical foaming concentrates. More specifically, the present invention is directed to the compounding, encapsulating and pelletizing in a high melt resin carrier a highly loaded concentration (5 to 70 wt%) of foaming agents which include an endothermic foaming agent, an exothermic foaming agent or hybrid combinations of these two such that when incorporated into a thermoplastic resin to produce a foamed product will chemically react to form carbon dioxide, nitrogen or hydrogen or mixtures thereof as the active foaming gas.

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