abstract non toxic tertiary amines having very low vapor pressures and substantially insolubility in water and fats are employed as free radical catalyst activators for adhesive compositions comprising polyurethane polymers or elastomers dissolved in an addition polymerizable combination of an acrylic or methacrylic monomer a copolymerizable monomer containing a free carboxylic acid group and a non activated free radical polymerization catalyst application_number US 85870277 A description a one liter reaction flask equipped with a mechanical stirrer and reflux condenser was loaded with 2 1 moles of glycidyl methacrylate 297 5 grams two moles of n methyl aniline 214 grams and 100 parts per million of hydroquinone 0 05 grams the reaction mixture was heated for a total of 24 hours at 98 u00b0 c with agitation air was maintained over the reaction at all times to prevent premature polymerization the product n phenyl n methyl amino 2 hydroxy propyl methacrylate ch 2 u2550 c ch 3 cooch 2 chohch 2 n ch 3 c 6 h 5 is a light green liquid with a refractive index of 1 5418 a vapor pressure of 2 mm at 162 u00b0 165 u00b0 c and of less than 0 05 mm at room temperature the material was applied to a clean steel panel and the adhesive base of example 1 of patent application ser no 763 145 was applied to a second panel the two were then brought together and allowed to set setting time was 10 to 12 minutes at room temperature the bond strength in shear was 2400 lbs per square inch.