New reactive contact adhesives, a process for their production and their use

摘要

PCT No. PCT/EP91/02339 Sec. 371 Date Jun. 24, 1993 Sec. 102(e) Date Jun. 24, 1993 PCT Filed Dec. 6, 1991 PCT Pub. No. WO92/11335 PCT Pub. Date Jul. 9, 1992.New contact adhesives which are designed as multifunctional contact reactive adhesives and which may be used in a multistage curing process, for example for bonding wood, plastic moldings, metals and the like, are provided. One of the functional substituents of the adhesive composition is characterized by the presence of an olefinic double bond which is accessible to radical reaction initiation. The other functional substituent is an isocyanate group which reacts off, e.g. under the effect of moisture. These different reaction mechanisms enable the reactive contact adhesive to be cured in stages, e.g. by forming contact-sensitive adhesive layers on hard surfaces in a first stage, subsequently fitting the correspondingly coated surfaces together and firmly bonding them together in a final stage, e.g. under the effect of atmospheric moisture. Also provided is a process for the production of the new reactive contact adhesives.