25-07-1995 дата публикации
Номер: JP0007188134A
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PURPOSE: To obtain an N-vinylformaldehyde oligomer useful as an intermediate in the preparation of vinylamine oligomers showing specific hygroscopicity and quick solubility and also high reactivity, uniformity and color stability. CONSTITUTION: An N-vinylformaldehyde oligomer has a proton initiating group at the initiation end and an aldehyde equivalent at the other end and a molecular weight of about 280-7,500 and, paticularly, is the oligomer having a methyl group as the proton initiating group and a cyclic bisamide group as the aldehyde equivalent and is particularly a oligomer of formula I [wherein (n) is 1-100; and X is HC=CH-NHCHO, a group of formula II or a group of formula III (wherein Y is a catalyst system anion)]. The oligomer can be obtained by polymerizing vinylformamide. The oligomer can be hydrolyzed to form the corresponding oligomeric vinylamine. The oligomeric vinyl-amine shows excellent hygrosopicity, quick solubility, high reactivity, uniformity, and light and color ...
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