| 摘要 |
Heat-resistant, polymer-containing, solvent-free adhesive compositions are prepared by reacting a novel mixture of saturated polyester or copolyester with capped isocyanate under the influence of temperature and, if necessary, catalysts, with evident viscosity increase, with cross-linking as appropriate. The adhesive compositions combine the process-technical properties of low-viscosity melt-adhesives and the strength, tenacity and stability of cross-linked duroplasts or high-viscosity thermoplasts. Subsequent working and protection from explosion are not necessary. Use is possible in each known art for melt-adhesives, e.g. as paste, powder, melt, textiles, or flat structures. In addition, the compositions are suitable as melt coatings or for injection moulding reactions. |
