Abstract: A process for preparing hot-melt pressure-sensitive adhesives from aqueous dispersions based on polyacrylate, and pressure-sensitively adhesive articles produced therefrom, which comprises producing highly concentrated aqueous dispersions with polymer contents between 68% by weight and 87% by weight of gel-free, molecularly-dispersely meltable polymer particles with an at least bimodal size distribution in size ranges between 0.5 ?m and 1000 ?m Ø.

Abstract: Use of a fixing aid on the underside of a splicing tape, where a) the splicing tape is stuck using the fixing aid to the second-from-top web of a wound reel, and b) the splicing tape is also stuck to the leading edge of the topmost web of the wound reel in such a way that at least part of the adhesively equipped upper face of the splicing tape that is situated opposite to the fixing aid is open for adhesive coupling to a high-speed web of another, unrolling reel, c) the fixing aid being stuck onto the underside of the splicing tape and comprising a backing material formed from two laminated sheetlike materials, where the lamination forms a predetermined breakage zone and the fixing aid has been made pressure-sensitively adhesive on its underside.

Abstract: Method for producing release agent dispersions for glue-resistant layering on material in the form of surface areas, sheets or strips, especially for the production of surface coatings on the reverse side of pressure sensitive tapes et al, characterized in that copolymers are produced by radical polymerization in an aqueous dispersion from the monomer mixtures described herein.

Abstract: An insecticidally active fraction is obtained from black pepper by a process comprising the following steps:(a) extraction of black pepper in ground form with CO.sub.2 at 30 to 70.degree. C. and 150 to 500 bar;(b) removal of sharp tasting fractions therein in a first expansion step at 25 to 35.degree. C. and 70 to 150 bar;(c) removal of an oily fraction containing the insecticidally active components as well as most of the essential oils in a second expansion step at 15 to 30.degree. C. and 40 to 70 bar;(d) removal of essential oils by steam distillation, and if desired;(e) hydrogenation of the insecticidally active components.