| 摘要 |
<p>PCT No. PCT/EP90/00136 Sec. 371 Date Sep. 27, 1991 Sec. 102(e) Date Sep. 27, 1991 PCT Filed Jan. 25, 1990 PCT Pub. No. WO90/10041 PCT Pub. Date Sep. 7, 1990.The present invention relates to a process for the preparation of closures for imperviously sealing packaging containers, by which a sealing composition is applied and stoved onto the inside of the closures, wherein the sealing composition contains A) 65 to 93% by weight of a liquid, blocked diisocyanate B) 2 to 15% by weight of a liquid diamine and/or polyamine C) 0 to 25% by weight of pigments and/or fillers D) 0 to 20% by weight of one or more reactive diluents E) 0 to 8% by weight of auxiliaries and additives, where the sum of the proportions by weight of the components A to E is 100% by weight in each case. The present invention furthermore relates to the closures prepared by the process according to the invention and also to packaging containers which contain these closures.</p> |
