Karl Ruehl is a notable inventor based in Bad Nauheim, Germany. He has made significant contributions to the field of materials science, particularly in the development of advanced sheeting technologies. With a total of 4 patents to his name, Ruehl's work has had a lasting impact on various industries.

Latest Patents

One of Ruehl's latest patents is for polysulfide sheeting. This innovative sheeting is prepared by mixing a curable polysulfide oligomer or polymer, carbon black, and manganese dioxide as a hardening catalyst. The composition is formed into a sheet and cured at an elevated temperature. This sheeting exhibits unusually high short-term heat resistance, maintaining its watertightness even when coated with hot-laid asphalt at 240°C. Additionally, it offers better resistance to ultraviolet light compared to conventional polysulfide sheeting, along with good penetration and compression set resistance. The sheeting can also be laminated to a reinforcing layer, if desired. A continuous waterproofing layer can be created by laying pieces of the sheeting in overlapping relation, placing an uncured polysulfide rope between the overlapping edges, and curing the rope to form an integral sheet. Such waterproof layers are ideal for incorporation into paving for bridges, roofs, and other structures.

Another significant patent by Ruehl is for a magnetic, hot-melt adhering soundproofing sheet. This invention addresses the issue of bubble formation when melting a magnetically adhering bituminous soundproofing sheet with a hot-melt adhesive layer onto an automobile body sheet metal at temperatures around 190°C. By integrating a flexible, temperature-resistant foil into the soundproofing sheet, Ruehl has successfully prevented bubble formation. For soundproofing sheets up to 3 mm thick, the spacing between the hot-melt layer and the foil should not exceed 1 mm.

Career Highlights

Throughout his career, Karl Ruehl has worked with prominent companies such as Ruetgerswerke Aktiengesellschaft and Rutgerswerke Aktiengesellschaft. His experience in these organizations has contributed to his expertise in materials development and innovation.

Collaborations

Ruehl has collaborated with notable individuals in his field, including Ernst Scherp and Karlheinz Bildner. These partnerships have further enhanced his work and contributions to the industry.

Conclusion

Karl Ruehl

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