Patent ID: 7022266

Claim:
A composition of matter comprising: (a) a metal powder, (b) a solder powder which melts at lower temperature than the metal powder, (c) a polymer, or a monomer which is polymerisable to yield a polymer, said polymer being crosslinkable under the action of a chemical cross-linking agent, (d) a cross-linking agent for said polymer, the cross-linking agent being selected from carboxylated polymers, polycarboxylic acids as such and polymer fatty acids so as to provide multiple reaction sites which lack chemical protection, the cross-linking agent having fluxing properties and being substantially nonreactive at said sites with said polymer without the application of heat and provision of a catalyst for reaction therebetween, the cross-linking agent not reacting with said polymer under storage conditions, and the cross-linking agent being capable of solvating, (e) metallic oxide and metallic salt catalyst which are formed by heating metallic components (a) and (b) and which promote a rapid cross-linking reaction between said polymer (e) and said cross-linking agent (d) when incorporated in said polymer, as a result of solvation of said catalyst by the cross-linking agent in the presence of heat, said composition being under storage conditions such that it does not, possess a temperature sufficient for such solvating and crosslinking reaction to occur.