Process for obtaining coating compositions of improved whiteness

Details Process for obtaining coating compositions of improved whiteness Process for obtaining coating compositions of improved whiteness

1981-01-07

1983-06-07

Tungol, Maria Parrish

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106209, 106137, 106148, 8584, 8648, 25230123, 524100, C09D 320, C09K 1106, D06P 3852

Patent

active

043869653

ABSTRACT:
A process is disclosed for obtaining coating compositions of improved whiteness for coating paper or cardboard using fluorescent whitening agents of the bis-triazinylaminostilbene-2,2'-disulfonic acid series, which process comprises adding to the coating compositions, in addition to the respective fluorescent whitening agent, an acid phosphoric acid ester of an oxyalkylated fatty amine of the formula ##STR1## or an alkali metal salt, ammonium salt or amine salt thereof, wherein R is an aliphatic hydrocarbon radical of 8 to 22 carbon atoms, Y.sub.1 and Y.sub.2 are both hydrogen, or one of Y.sub.1 and Y.sub.2 is hydrogen and the other is methyl, X is the acid radical of phosphoric acid, the acid hydrogen atoms of which radical can be replaced by alkali metal ions, ammonium ions or amine salt ions, and m and n are integers, the sum of which is 2 to 30. To the coating compositions can also be added organic solubilizers, non-ionic or anionic surfactants and/or polar organic compounds. Coating compositions which contain the above fluorescent whitening agents and assistants are also disclosed.

REFERENCES:
patent: 2956898 (1960-10-01), Fleck
patent: 3600385 (1971-08-01), Loffelman et al.
patent: 3672816 (1972-06-01), Dehnert
patent: 3900608 (1975-09-01), Dierkes et al.
patent: 4258448 (1981-03-01), Reitz et al.

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