| http://www.w3.org/ns/prov#value | - Examples of volatile foaming agents to be used for producing expandable, foamable pellets or particles of the present invention, include aliphatic hydrocarbons, such as propane, butane, pentane, hexane, heptane and petroleum ether; alicyclic hydrocarbons, such as cyclopentane and cyclohexane; and halogenated hydrocarbons, such as methyl chloride, ethyl chloride, methyl bromide, dichlorodifluoromet
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