(JP8504472-W)      Mfr. comprises (a) heating a propylene polymer material comprising greater than 50 wt.% propylene monomeric units based upon the wt. of the propylene polymer material to form a melt polymer material; (b) incorporating into the melt polymer material a blowing agent to form a foamable gel; (c) cooling the foamable gel to an optimum foaming temp.; and (d) extruding the foamable gel through a die to a region of lower pressure to form the foam; and the blowing agent contains greater than 85 wt.% of organic blowing agent(s) based upon the total wt. of the blowing agent.    A dimensionally stable, open cell, propylene polymer foam obtd. as above    The foam is pref 30-70% open cell. The blowing agent is 1-chloro-1,1-difluoroethane, or 1,1-difluoroethane, or the mixt. with ethyl chloride, or is of isobutane, n-butane and n-pentane. The blowing agent incorporated into the melt polymer material contains 95 wt.% or more of organic blowing agent(s), and may further contain inorganic blowing agent(s).    USE/ADVANTAGE -   This foam is suitable for cushion packaging since it has adequate impact absorption properties and resilience. It is also used for sound absorption and thermal insulation. This foam offers high cushioning properties and resiliency. It mitigates impact during multiple drops and absorbs dynamic impacts surprisingly well. It has satisfactory dimensional stability even though it is expanded with fast permeating blowing agents.    (EP674579-B1)      Mfr. comprises (a) heating a propylene polymer material comprising greater than 50 wt.% propylene monomeric units based upon the wt. of the propylene polymer material to form a melt polymer material; (b) incorporating into the melt polymer material a blowing agent to form a foamable gel; (c) cooling the foamable gel to an optimum foaming temp.; and (d) extruding the foamable gel through a die to a region of lower pressure to form the foam; and the blowing agent contains greater than 85 wt.% of organic blowing agent(s) based upon the total wt. of the blowing agent.    A dimensionally stable, open cell, propylene polymer foam obtd. as above    The foam is pref 30-70% open cell. The blowing agent is 1-chloro-1,1-difluoroethane, or 1,1-difluoroethane, or the mixt. with ethyl chloride, or is of isobutane, n-butane and n-pentane. The blowing agent incorporated into the melt polymer material contains 95 wt.% or more of organic blowing agent(s), and may further contain inorganic blowing agent(s).    USE/ADVANTAGE -   This foam is suitable for cushion packaging since it has adequate impact absorption properties and resilience. It is also used for sound absorption and thermal insulation. This foam offers high cushioning properties and resiliency. It mitigates impact during multiple drops and absorbs dynamic impacts surprisingly well. It has satisfactory dimensional stability even though it is expanded with fast permeating blowing agents.