Patent ID: 8337955
Filing Date: 2012-12-25
Classification: C08G,C09D

Abstract:
1. An aqueous coating composition comprising an autoxidisable amide group containing resin, said autoxidisable amide group containing resin having: i) >30 wt % of fatty acid residues, by weight of autoxidisable amide group containing resin; ii) a Tg in the range of from −40 to +35° C.; iii) the following relationship: where AV=acid value and where ND=neutralization degree of acid groups on the autoxidisable amide group containing resin; and iv) a Mw in the range of from 2,500 to 20,000 g/mol; v) a PDi less than 10; vi) an amide group content of at least 10 mmoles/100 g solid of autoxidisable amide group containing resin; and said composition having: b) a co-solvent content less that 25 wt % by weight of solids; c) a N-methylpyrrolidone content <13 wt % by weight of solids; d) a solids content >38 wt %; said composition when in the form of the film having a telegraphing value of less than 20 gloss units; where the telegraphing value is the difference between an initial smooth gloss value minus an initial rough gloss value of the film, where the initial smooth gloss value is the gloss when the film is cast on smooth PVC (R the initial rough gloss value is the gloss when the film is cast on rough PVC (R each film has a dry film thickness of 52 μm [±6 μm]; and each initial gloss value is measured at a 20° angle, one day (24 h) after the film has been cast.