反应详情

A benzylidenecyanoacetate-capped PLURACOL HP1250D was made as described in Example 1. An adhesive composition was made by mixing 39.25 weight percent of the benzylidenecyanoacetate-capped PLURACOL HP1250D, 39.25 weight percent vinyl toluene, 4.00 weight percent of the reaction product of caprolactone, phosphorus pentoxide and 2-hydroxyethylacrylate (commercially available from Nippon Kayaku Co. under the trade designation KAYAMER PM 21), 3.00 weight percent divinyl benzene, 1.40 weight percent diisopropanol-p-toluidine, 0.60 weight percent dimethyl aniline and 5.00 weight percent silica to form side A. 7.50 weight percent benzoyl peroxide initiator then was mixed with side A and immediately thereafter the resulting adhesive was applied to five steel coupons that were bonded together to form lap shear joints as per ASTM D-1002-94. The lap shear joints were allowed to fully cure overnight and then tested according to ASTM D-1002-94. The joints exhibited an average strength of 1241 psi and an adhesive failure mode (in other words, the adhesive failed before any destruction of the steel). Weight percents are based on the total amount of sides A and B.