Cellulosic sizing agents

Details Cellulosic sizing agents Cellulosic sizing agents

1974-01-10

1977-03-22

Lindsay, Jr., Robert L.

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

162164R, 162175, 260 2EN, 260 292N, C08J 302

Patent

active

040134806

ABSTRACT:
Novel cellulosic sizing agents are described. They are ring-opened aziridinyl homopolymers of ##EQU1## wherein R.sub.1 and R.sub.2 are hydrogen or lower alkyl; R.sub.3 is hydrogen or methyl; R.sub.4 is an organic hydrophobic group (e.g., C.sub.8 -C.sub.24 alkyl radical); and X is oxygen or amido nitrogen. The above homopolymers can also be blended with cationic starch to form useful sizing compositions. These sizing agents are normally employed as aqueous emulsions. E.g., paper having excellent sizing properties was prepared from a paper pulp containing a mixture of cationic starch and poly[stearyl 3-(1-aziridinyl)propionate].

REFERENCES:
patent: 2626931 (1953-01-01), Bestian
patent: 2698793 (1955-01-01), Landes et al.
patent: 3198754 (1965-08-01), Ahlbrecht et al.
patent: 3346527 (1967-10-01), Lagally
patent: 3575796 (1971-03-01), Brown et al.
patent: 3622528 (1971-11-01), Langoria
Dermer & Ham, "Ethylenimine and Other Aziridines" Academic Press, (1969), pp. 133, 160, 161.

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