Location History:
- Darmstadt, DE (1976 - 1978)
- Reinheim, DE (1982)
- Schwarzenberg, AT (1984 - 1986)
Company Filing History:
13 out of 1,248 
1 out of 100 Years Active: 1976-1986
Title: Horst Bernhard: Innovator in Nacreous Pigments
Introduction
Horst Bernhard is a notable inventor based in Schwarzenberg, Austria. He has made significant contributions to the field of pigments, particularly in the development of nacreous pigments with enhanced properties. With a total of 14 patents to his name, Bernhard's work has had a lasting impact on various industries.
Latest Patents
Among his latest patents are innovations related to nacreous pigments that exhibit improved light fastness. These pigments are formulated using mica platelets coated with titanium dioxide and, optionally, other metal oxides. An additional thin layer of manganese oxide enhances their properties. The preparation process involves coating mica in an aqueous suspension with titanium dioxide hydrate layers, followed by washing, drying, and calcining. Furthermore, an additional layer of manganese hydroxide can be precipitated onto the base pigment, either during or after the coating process. These new pigments are versatile and can be utilized in plastics, lacquers, paints, and cosmetics.
Another significant patent focuses on a process for preparing nacreous pigments with improved gloss properties. This process involves suspending mica platelets in a solution containing titanium sulfate, resulting in a homogeneous mixture of titanium dioxide, aluminum oxide, and silicon dioxide. The suspended platelets are then coated through a method of slow heating.
Career Highlights
Horst Bernhard has worked with prominent companies such as Merck Patent Gesellschaft mit beschränkter Haftung. His expertise in pigment technology has positioned him as a key figure in the development of innovative materials.
Collaborations
Throughout his career, Bernhard has collaborated with notable colleagues, including Reiner Esselborn and Kurt Marquard. These partnerships have contributed to the advancement of his research and the successful development of new products.
Conclusion
Horst Bernhard's contributions to the field of nacreous pigments demonstrate his innovative spirit and dedication to advancing material science. His patents reflect a commitment to improving product quality across various applications.