Patent ID: 6653371
Filing Date: 2003-11-25
Classification: C08G,C08K,C08L,C09J,H05K

Abstract:
A one part epoxy resin composition comprising:(a) an epoxy compound which has two or more epoxy groups per molecule; (b) a polythiol compound which has two or more thiol groups per molecule; (c) a latent hardener; and (d) at least one solid organic acid substantially insoluble in a mixture of (a), (b) and (c) above, at room temperatures within the range of about 15Â° C. to 35Â° C. and which remains substantially insoluble in effective amounts at temperatures below the elevated activation temperatures at which cure of the composition is initiated, which is selected from the group consisting of: (i) solid organic acids having a pKa of less than or equal to about 12.0; and (ii) aliphatic, cycloaliphatic and aromatic carboxylic acids and derivatives thereof, aliphatic, cycloaliphatic and aromatic quinones and derivatives thereof, phenols and derivatives thereof and enolisable aliphatic, cycloaliphatic and aromatic compounds and derivatives thereof and combinations thereof.