Bruce A Lange

Title: Bruce A Lange: Innovator in Cement Additives

Introduction

Bruce A Lange is a notable inventor based in Hamstead, NH (US). He has made significant contributions to the field of cement additives, holding 2 patents that enhance the efficiency and properties of hydraulic cement compositions.

Latest Patents

One of his latest patents is titled "Grinding aids for granular blast furnace slag." This invention involves intergrinding granular blast furnace slag with amine salts of aromatic group-containing carboxylic acids to improve the grinding operation's efficiency. A preferred embodiment utilizes a mixture of aromatic group-containing carboxylic acids, which are obtained as a low-cost by-product in the commercial production of phthalic anhydride, to prepare the amine salt grinding aid.

Another significant patent is "Additive combination for hydraulic cement compositions." This invention improves the low-temperature stability of an additive product that imparts desirable properties, such as water repellency and set-retardation, to hydraulic cement compositions, particularly Portland masonry cements. The addition of certain low molecular weight, water-soluble, non-ionic organic materials, such as alcohols, ketones, amides, and aldehydes, enhances the additive product's performance. The use of low-temperature stabilizers that also act as grinding aids for hydraulic cements, like glycols, is highly preferred, providing additional benefits during the grinding operation.

Career Highlights

Bruce A Lange is currently associated with W. R. Grace Co., a company known for its innovative solutions in specialty chemicals and materials. His work focuses on developing advanced materials that improve construction processes and product performance.

Collaborations

Bruce collaborates with various professionals in his field, including his coworker Heyman C Duecker, to drive innovation and enhance product development.

Conclusion

Bruce A Lange's contributions to the field of cement additives through his patents demonstrate his commitment to innovation and improving construction materials. His work continues to influence the industry positively.