초록

These preformed or possibly nonformed solid reactive melts are able to be stored at room temperature and retain their latent thermoreactivity.

대표청구항 ▼

[ I claim as my invention:] [1.] A method of manufacturing a room-temperature shelf-stable mixture of reactive substances comprising(A) at least one thermoplastic polymer having a melting point above 40.degree. C., so that it is solid at room temperature, and which carries functional groups reactive

[ I claim as my invention:] [1.] A method of manufacturing a room-temperature shelf-stable mixture of reactive substances comprising(A) at least one thermoplastic polymer having a melting point above 40.degree. C., so that it is solid at room temperature, and which carries functional groups reactive with isocyanate,(B) at least one solid polyisocyanate in powder form, suspended in the solid thermoplastic polymer and having a melting point higher than that of the thermoplastic polymer,(C) at least one deactivating agent for reacting with surface isocyanate groups in the solid polyisocyanate,wherein the polyisocyanate is pre-mixed with said deactivating agent, and is thereby deactivated, the pre-mix of polyisocyanate and deactivating agent is then, at a temperature above the melting point of the polymer but below the melting point of the deactivated polyisocyanate, mixed with the polymer, which has been made liquid through warming, in layers, so that the resulting mixture includes first layers which predominantly comprise said polymer, and, between said first layers, second layers which predominantly comprise said deactivated polyisocyanate and also unbound deactivating agent, and the mixture is then cooled and solidified with the said layer structure.