Company Filing History:
7 out of 10 
1 out of 3,187 
1 out of 1 Years Active: 1978-1985
Title: Innovations by Walter Sibral: Pioneering Patents in Polyurethane Technologies
Introduction
Walter Sibral, an accomplished inventor based in Tulln, Austria, has made significant contributions to the field of polyurethane technologies. With a total of nine patents to his name, Sibral's innovations are particularly notable for their application in tire technology.
Latest Patents
Among his latest patents is the invention of reinforced polyurethane tires. This groundbreaking development involves the use of polyurea or polyurethane formulations with low hysteresis, achieved through the reaction of a prepolymer derived from aromatic isocyanates and high molecular weight difunctional polyols. The incorporation of an aromatic diamine and difunctional polyol into the chain extender mix results in a reinforced tire with enhanced properties. The selected aromatic diisocyanate and aromatic diamine are designed to provide substantial symmetry between the molecules, with aromatic polyamide used as the preferred reinforcement.
Another significant patent focuses on the synthesis of polyurethane compositions having low hysteresis. The process involves the reaction of a prepolymer based on a mononuclear diisocyanate and a polyol, combined with a chain extender mix of a mononuclear aromatic diamine and a polyol. This innovation aims to produce formulations with a specific free isocyanate content and an optimized equivalent ratio of amine to polyol.
Career Highlights
Walter Sibral's career has seen him contribute to leading companies in the industry, including Lim Holding, S.A. and Air Products and Chemicals, Inc. His role in these organizations has allowed him to refine his expertise in polymer science and innovation.
Collaborations
Throughout his professional journey, Sibral has collaborated with esteemed colleagues, including Oskar Schmidt and Andreas R. Schmidt. These partnerships have fostered an environment of creativity and technical advancement in polyurethane technologies.
Conclusion
Walter Sibral stands out as a prominent figure in the innovation of polyurethane materials and applications, particularly in the automotive sector. His nine patents reflect a commitment to advancing technology and improving product performance through thoughtful and innovative engineering.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.