초록 ▼

An aqueous metal surface treatment composition that includes (A) an aqueous dispersion of a phenolic novolak resin that includes water and a reaction product of a phenolic resin precursor, a modifying agent and a multi-hydroxy phenolic compound wherein the modifying agent includes at least one funct

An aqueous metal surface treatment composition that includes (A) an aqueous dispersion of a phenolic novolak resin that includes water and a reaction product of a phenolic resin precursor, a modifying agent and a multi-hydroxy phenolic compound wherein the modifying agent includes at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor and at least one ionic moiety, (B) an acid and, optionally, (C) a flexibilizer. According to one embodiment the modifying agent is an aromatic compound. According to another embodiment the ionic moiety of the modifying agent is sulfate, sulfonate, sulfinate, sulfenate or oxysulfonate and the dispersed phenolic resin reaction product has a carbon/sulfur atom ratio of 20:1 to 200:1.

대표청구항 ▼

1. An aqueous metal surface treatment composition comprising the following ingredients:(A) an aqueous dispersion of a phenolic novolak resin that includes a reaction product of (i) a phenolic resin precursor; (ii) an aromatic compound modifying agent wherein the modifying agent includes (a) at least

1. An aqueous metal surface treatment composition comprising the following ingredients:(A) an aqueous dispersion of a phenolic novolak resin that includes a reaction product of (i) a phenolic resin precursor; (ii) an aromatic compound modifying agent wherein the modifying agent includes (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor; and (b) at least one ionic moiety; and (iii) at least one multi-hydroxy phenolic compound; and (B) an acid.