Surface coating agents

摘要: Compounds useful as surface coating agents, including compounds of Formula (I), wherein X1 comprises a first photoreactive species; X2 second Y nonpolymeric core molecule comprising an aromatic group; and Z at least one charged group. The can include group such benzene radical, the groups be independently selected from organic acids that sulfonic acid, carboxylic phosphoric species aryl ketones, those acetophenone, benzophenone, anthraquinone, anthrone, anthrone-like heterocycles, their substituted derivatives. Examples agents 4,5-bis(4-benzoylphenylmethyleneoxy) benzene-1,3-disulfonic acid di(potassium and/or sodium) salt, 2,5-bis(4-benzoylphenylmethyleneoxy) benzene-1,4-disulfonic salt (Compound II), benzene-1-sulfonic monopotassium monosodium salt.