Location History:
- New Castle County, DE (US) (2000)
- Wilmington, DE (US) (2004)
Company Filing History:
Years Active: 2000-2004
Title: L Drake Walsh: Innovator in Paper Coating Technologies
Introduction
L Drake Walsh is a notable inventor based in Wilmington, DE (US), recognized for his contributions to the field of paper coating technologies. With a total of 2 patents, he has developed innovative solutions that enhance the performance and environmental sustainability of paper products.
Latest Patents
Walsh's latest patents include a "Paper coating composition with environmentally acceptable fluidized polymer suspension." This invention provides a light white mineral oil-based fluidized polymer suspension (FPS) composition for use as a rheology modifier in paper coatings. It has been found that by using a selected composition of low viscosity oil as a carrier, high solids content and environmentally friendly fluidized polymer suspensions of water-soluble cellulose derivatives, synthetic water-soluble polymers, guar gum and derivatives, starch and derivatives, and mixtures thereof can be prepared. The FPS of the present invention was found to provide unexpected beneficial performance properties when added as a rheology modifier to a paper coating containing standard binders, pigment, and water. The oil-based fluid polymer suspension composition of the present invention for use as a rheology modifier in the paper coating comprises: a hydrophilic polymer, an organophilic clay, a surfactant stabilizer, and a light white mineral oil having selected properties.
Another significant patent is the "Paper coating composition with improved optical brightener carriers." This paper coating composition contains an optical brightening agent (OBA) and a water-soluble non-ionic polysaccharide derivative, exhibiting a solution viscosity in water of less than 1500 cps when dissolved at 5% polymer concentration. The paper coating provides improved optical brightness compared to the same formulation without the non-ionic polysaccharide derivative. A paper coated with this composition has an optical brightness value of greater than 70.
Career Highlights
Walsh is currently associated with Hercules Corporation, where he continues to innovate in the field of paper coatings. His work focuses on developing environmentally friendly solutions that enhance the quality and performance of paper products.
Collaborations
Some of his notable coworkers include Eric F Bock and Charles L Burdick, who contribute to the collaborative efforts in advancing paper coating technologies.
Conclusion
L Drake Walsh's innovative patents and contributions to the field of paper coatings demonstrate his commitment to enhancing product performance while considering environmental sustainability. His