Addition polymerizable urethane-based anaerobic adhesives made from tin (II) organoesters.

摘要

An addition polymerizable adhesive is prepared by using the reaction product of (1) an isocyanate compound (such as 2-isocyanatoethyl methacrylate) and (2) an active hydrogen compound (such as a poly(ethylene glycol)) Wherein at least one of (1) and (2) has an addition polymerizable double bond, and the other is polyfunctional, or both (1) and (2) have addition polymerizable double bonds, and wherein the reaction between (1) and (2) is catalyzed with a tin (II) organoester (such as stannous octoate); and formulating the reaction product of (1) and (2) with a curing amount of a polymerization initiator and a stabilizing amount of a polymerziation initiator. The adhesives of the invention have surprisingly long shelf lives compare to similar adhesives made with other catalysts.