| 摘要 |
A diquaternary ammonium compound, especially a diquaternary ammonium diacetate in which at least one substituent of nitrogen atom is an alkyl group having at least 14 carbon atoms and the total number of carbon atoms of all nitrogen substituents is at most 44, is an excellent formaldehyde polymerization initiator, which gives large particle size polyformaldehyde in a mixture of aliphatic and aromatic hydrocarbons. Polyformaldehyde is a commercial resin suitable, among others, in applications requiring engineering resins having high strength and wear resistance.
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