Company Filing History:
6 out of 1,197 
1 out of 312 
2 out of 832,966 Years Active: 1990-1995
Title: Joanne M Schwark: Innovator in Polysilazane Technology
Introduction
Joanne M Schwark is a prominent inventor based in Wilmington, DE (US), known for her significant contributions to the field of polysilazane technology. With a total of nine patents to her name, she has made remarkable advancements in materials science, particularly in the development of thermoset polymers and ceramic articles.
Latest Patents
One of her latest patents is focused on peroxide-substituted polysilazanes. This invention involves the preparation of an uncrosslinked polysilazane containing chemically bound peroxide groups by reacting a polysilazane with a hydroperoxide at a temperature below the decomposition temperature of the hydroperoxide. The resulting thermoset polymer is formed by heating the uncrosslinked, peroxide-substituted silazane, which is also substituted by alkenyl or alkynyl groups. This process initiates crosslinking through the decomposition of the chemically bound peroxide groups, allowing for the creation of crosslinked polysilazanes that can be pyrolyzed to form ceramic articles.
Another notable patent pertains to shape-sintered articles derived from boro-containing polysilazanes. This invention relates to preceramic polymers that incorporate boron and their application in the sintering of silicon carbide (SiC) ceramics. The process involves preparing a boron-substituted polysilazane by reacting a silazane ammonolysis product with a borane containing at least one B-H group per molecule. This innovative approach results in a boron-substituted polysilazane that contains boron-carbon bonds, enhancing the material properties for ceramic applications.
Career Highlights
Throughout her career, Joanne has worked with notable companies, including Hercules Corporation. Her work has significantly impacted the development of advanced materials, particularly in the field of ceramics and polymers.
Collaborations
Joanne has collaborated with various professionals in her field, including her coworker Roger L Matsumoto. These collaborations have contributed to her innovative research and development efforts.
Conclusion
Joanne M Schwark is a trailblazer in the field of polysilazane technology, with a strong portfolio of patents that showcase her innovative spirit and dedication to advancing materials science. Her contributions continue to influence the development of new materials and applications in various industries.