ERIC W VESSEY
Engineers in Delaware
License number
Pennsylvania PE014240L
Category
Engineers
Type
Professional Engineer
Address
Address
2
Delaware
Media, PA 19064
Media, PA 19064
Professional information
Surface Treated Silica
US Patent:
4029513, Jun 14, 1977
Filed:
Jun 11, 1975
Appl. No.:
5/585910
Inventors:
Eric W. Vessey - Springfield PA
James R. Miller - Rancho La Costa CA
Klaus Robert Lange - Huntingdon Valley PA
James R. Miller - Rancho La Costa CA
Klaus Robert Lange - Huntingdon Valley PA
Assignee:
Philadephia Quartz Company - Valley Forge PA
International Classification:
C09C 128
US Classification:
106288B
Abstract:
Microfine silicas that are useful as rubber reinforcing fillers and thickening agents, and are readily dispersible are prepared by modifying the surface layer of the silica. The surface modification results from including in or affixing to the surface of the silica certain inorganic polyvalent ions.