C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/10 (2006.01) B65D 51/00 (2006.01) B65D 53/06 (2006.01)
Patent
CA 2088773
The subject of the present invention is a process for the production of closures, in which process a sealing composition is applied and baked on the inside of the closures, wherein a sealing composition is applied which contains: A) 20 to 95% by weight of at least one compound having on average more than two isocyanate groups per molecule and/or of a diisocyanate prepolymer, the isocyanate groups being blocked; B) 1.5 to 30% by weight of at least one diamine and/or polyamine; C) up to 78.5% by weight of at least one plastic and/or elastic and/or reactive organic polymer; D) up to 60% by weight of pigments and/or fillers; E) up to 50% by weight of one or more reactive diluents; and F) up to 20% by weight of auxiliaries and additives, the sum of the proportions by weight of the components A to F being 100% in each case. The present invention also relates to the closures produced by the process according to the invention and to packaging containers which contain said closures.
Krause Siegfried
Nussen Peter
Fetherstonhaugh & Co.
Ppg Industries Inc.
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