Process for preparing polymeric colorants having a poly(vinylami

Details Process for preparing polymeric colorants having a poly(vinylami Process for preparing polymeric colorants having a poly(vinylami

1977-01-17

1981-06-23

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260141, 260152, 260159, C07C10702, C07C10708, C09B 3130, C09B 3164

Patent

active

042750024

ABSTRACT:
Polymeric colorants are prepared by the process of (a) reacting acetaldehyde and acetamide in a mole ratio of 1:2-4 with an acid catalyst to form ethylidene-bis-acetamide, (b) cracking the ethylidene-bis-acetamide to vinylacetamide, (c) polymerizing the vinylacetamide with a free-radical catalyst, (d) hydrolyzing the resulting polymer with mineral acid and neutralizing with base to yield poly(vinylamine), and (e) coupling monomeric optically chromophoric groups to amine nitrogens of the poly(vinylamine).

REFERENCES:
patent: 3403200 (1968-09-01), Randall
patent: 3920855 (1975-11-01), Dawson et al.
patent: 4000118 (1976-12-01), Dawson et al.
Ben-Ishai et al., Chemical Abstracts, vol. 64, #12592 (1966).
Blance et al., Chemical Abstracts, vol. 65, #10695 (1966).
Noyes et al., J. Am. Chem. Soc., vol. 55, pp. 3493 to 3494, (1933).
Reynolds et al., J. Am. Chem. Soc., vol 69, pp. 911 to 915, (1947).
Von Richter, Ber. Deut. Chem. Gesell., vol. 5, p. 477, (1872).

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