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METHOD AND COMPOSITION FOR THE PRODUCTION OF REACTIVE HOT MELTS BASED ON SURFACE DEACTIVATED SOLID ISOCYANATES AND POLYMERS WITH FUNCTIONAL GROUPS
METHOD AND COMPOSITION FOR THE PRODUCTION OF REACTIVE HOT MELTS BASED ON SURFACE DEACTIVATED SOLID ISOCYANATES AND POLYMERS WITH FUNCTIONAL GROUPS
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机译：基于表面活化的固态异氰酸酯和功能基团的聚合物生产反应性热熔胶的方法和组成
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摘要
The invention relates to a method for the production of a meltable heat-curing composition comprising at least one polymer having isocyanate reactive groups and at least one solid polyisocyanate which is deactivated on the surface. Said inventive method is characterised by the following steps; a) preparation of at least one solid polyisocyanate (A) which is deactivated on the surface, which is inert in the reaction conditions in steps a) and b); b) dispersion of the at least one polyisocyanate (A) in at least one component (B) selected from the group made of monomers, oligomers, prepolymers and low molecular polymers with functional groups (b`) which enables a reaction mixture (i) to be obtained; c) addition of reaction mixture (ii) comprising at least one component (C) selected from the group made of monomers, oligomers, prepolymers and low molecular polymers having functional groups (c) to reaction mixture (i), whereby the reaction of the components (B) and (C) enables at least one oligomer or polymer (D) having isocyanate reactive groups (d) whose molecular weight is higher than the components (B) or (C) to be obtained. The at least one polyisocyante (A) is dispersed in the at least one oligomer or polymer (D) The invention also relates to heat-curing compositions and plastics obtained thereby.
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