Company Filing History:
Years Active: 1985-1997
Title: William J Largent: Innovator in Roof Coatings and Polyisocyanurate Foams
Introduction
William J Largent is a notable inventor based in Darien, IL (US). He has made significant contributions to the field of roofing materials and foam manufacturing. With a total of 2 patents, Largent's work focuses on creating innovative solutions that enhance the performance and safety of construction materials.
Latest Patents
Largent's latest patents include an asbestos-free roof coating composition. This invention relates to a roof-coating asphalt cutback that incorporates an amine-based dispersion aid and various optional ingredients, including fillers to achieve the desired bulk. The dispersion aid is an organic or inorganic acid neutralized salt of a polyamine. Another significant patent is a method for the manufacture of polyisocyanurate foams. This method involves blending a 'B' side with an 'A' side that includes an isocyanate. The 'B' side consists of a polyester polyol, an amine/quaternary ammonium borate ester blend, a surfactant, a blowing agent, and a metal catalyst, all in amounts of up to 20% by weight of the total weight of the 'B' side. This innovative method allows the 'B' side to remain a homogeneous liquid for at least one day without the need for agitation, and the resulting foam has a friability not exceeding 30%.
Career Highlights
Throughout his career, Largent has worked with prominent companies such as Akzo Nobel N.V. and Akzona Incorporated. His experience in these organizations has contributed to his expertise in developing advanced materials for the construction industry.
Collaborations
Largent has collaborated with notable individuals in his field, including Charles Kaloczi and Kenneth B White. These partnerships have likely fostered innovation and the exchange of ideas, further enhancing his contributions to the industry.
Conclusion
William J Largent is a distinguished inventor whose work in roof coatings and polyisocyanurate foams has made a lasting impact on the construction materials industry. His innovative patents and collaborations reflect his commitment to advancing technology in this field.