| 摘要 |
A metal (M) alkyl acid phosphate catalyst for the reaction of an epoxy compound with a carboxyl compound to provide a coating formulation that is stable at room temperature; that is humidity resistant, and non-yellowing, wherein the alkyl acid phosphate has the formula:and wherein:a. each R is selected from the group consisting of:i) a C1 to C18 alkly, cycloalkyl, or aryl;ii) a linear or branched C6 to C18 alkyl substituted with -(O-CH2-CH2-)o or -(O-CH-CH3-CH2-)p, wherein o or p is from 1 to 20;iii) a beta-hydroxyethyl compound, R'-X-CH2-CH-OH-CH2-, wherein R' is a C6 to C18 alkyl or cycloalkyl or aryl, X is either -CH2-, -O- or -COO-;b. n+m=3 and n is between 2 to 1; andc. M is Zn or Sn (II) in a mole equivalent of 0.7 to 1.5 moles per mole of alkyl acid phosphate. |
