Solidification of liquids with polyhexamethylenimine
AssigneeNippon Oil Co., Ltd.
InventorsHitoshi Yuasa, Hirosuke Imai
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Abstract
A process is provided for producing polyhexamethylenimine by condensing hexamethylenediamine at 50.degree. to 300.degree. C. in the presence of a palladium catalyst. The process yields substantially linear, high-molecular-weight polyhexamethylenimines, especially novel polyhexamethylenimines having a molecular weight of at least 1,000. Polyhexamethylenimines having a molecular weight of at least 500 are useful as gelling agents for organic liquids.
Claims6
A method for solidifying liquid organic compounds, which comprises adding polyhexamethylenimine having a number average molecular weight of 500 to 20,000 and having a structural unit of the general formula [(CH.sub.2).sub.6 NH] to a liquid organic compound in the presence of water, said liquid organic compound being selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, alicyclic hydrocarbons, ester compounds and halogenated hydrocarbons.
Dependencies are inferred from the claim text.