Company Filing History:
5 out of 328 
2 out of 462 
Years Active: 1976-1983
Title: The Innovative Contributions of Gilbert Witschard
Introduction
Gilbert Witschard is a notable inventor based in Grand Island, NY (US), recognized for his significant contributions to the field of polymer science. With a total of seven patents to his name, Witschard has made strides in developing materials that enhance impact resistance in various applications.
Latest Patents
Witschard's latest patents focus on vinyl halide polymer blends that exhibit enhanced impact resistance. One of his innovations involves a polymer blend capable of being molded into an impact-resistant, substantially transparent or translucent article. This blend comprises a vinyl halide homopolymer or copolymer, along with a conventional impact resistance enhancing polymer agent for polyvinyl halide. The monomer units of this agent consist essentially of methyl methacrylate, 1,3-butadiene, and styrene residues. Additionally, a thermoplastic block elastomer is included, which is typically incompatible with the vinyl halide polymer or copolymer. The blend is designed to ensure that the vinyl halide polymer or copolymer constitutes the major proportion, while the block and methacrylate polymers together make up a minor proportion of the composition. The weight ratio of block polymer to methacrylate polymer is maintained between about 1:5 to about 5:1. Another patent also focuses on a similar polymer blend, utilizing acrylonitrile, 1,3-butadiene, and styrene residues, ensuring compatibility with the vinyl halide resin for achieving a substantially transparent or translucent molded article.
Career Highlights
Throughout his career, Witschard has worked with prominent companies in the chemical and plastics industry. He has been associated with Hooker Chemicals & Plastics Corporation and Occidental Chemical Corporation, where he contributed to various innovative projects and advancements in polymer technology.
Collaborations
Witschard has collaborated with notable professionals in his field, including Anthony L. Lemper and Victor A. Pattison. These collaborations have likely enriched his work and contributed to the development of his patented innovations.
Conclusion
Gilbert Witschard's contributions to polymer science, particularly in the area of impact-resistant materials, highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to enhancing the performance of materials used in various applications.