Company Filing History:
Years Active: 1978-1981
Title: Richard J Wiersema: Innovator in Pigment Dispersants
Introduction
Richard J Wiersema is a notable inventor based in North Wales, PA (US). He has made significant contributions to the field of pigment dispersants, particularly in aqueous paints. With a total of 2 patents, his work has advanced the formulation of paints that require high levels of dispersant.
Latest Patents
Wiersema's latest patents include a pigment dispersant for aqueous paints. This invention describes a pigment paste that comprises a film-forming latex polymer, a pigment, and a dispersant copolymer. The dispersant copolymer is designed to disperse the pigment effectively and maintain the dispersion in both the paste and the resulting paint. Notably, the complex salt formed with Zn++ and ammonia is water-soluble at a pH of 9.6. Additionally, he has developed a method for dispersing paint pigments, resulting in an improved glossy, aqueous emulsion paint. This paint incorporates a water-soluble salt of a low molecular weight copolymer of hydroxyalkyl ester of acrylic or methacrylic acid and acrylic or methacrylic acid as a pigment dispersant.
Career Highlights
Wiersema has built a successful career at Rohm and Haas Company, where he has applied his expertise in polymer chemistry to develop innovative solutions for the paint industry. His work has been instrumental in creating formulations that enhance the performance and quality of paints.
Collaborations
Throughout his career, Wiersema has collaborated with talented individuals such as Peter Reeves Sperry and Kayson Nyi. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Richard J Wiersema's contributions to the field of pigment dispersants have significantly impacted the paint industry. His innovative patents and collaborative efforts continue to influence the formulation of high-quality aqueous paints.