ROBERT EDWARD HOFFMAN
Vehicle Board in Allentown, PA
License number
Pennsylvania MV122843L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Allentown, PA 18103
Professional information
Field Research Associate/ Dept. Of Geology &Amp; Paleontology At State Museum Of Pennsylvania
Position:
Field Research Associate/ Dept. of Geology & Paleontology at State Museum of Pennsylvania
Location:
Allentown, Pennsylvania Area
Industry:
Museums and Institutions
Work:
State Museum of Pennsylvania
- Harrisburg, PA since May 2005
-
Field Research Associate/ Dept. of Geology & Paleontology
Education:
University of Memphis 1966 - 1972
BA-Communications, Paleontology/GeologyAlpha
BA-Communications, Paleontology/GeologyAlpha
Interests:
Geology/Paleontology, Electronics
Senior Principal Research Associate At Air Products
Position:
Senior Principal Research Associate at Air Products
Location:
Allentown, Pennsylvania Area
Industry:
Chemicals
Work:
Air Products
-
Senior Principal Research Associate
Polyether Silicone Surfactants For The Manufacture Of Urethane Foams
US Patent:
5432206, Jul 11, 1995
Filed:
Jul 29, 1994
Appl. No.:
8/283012
Inventors:
Michael A. Stanga - Midland MI
John H. Frey - Alburtis PA
Robert F. Hoffman - Allentown PA
Robert E. Stevens - Emmaus PA
John H. Frey - Alburtis PA
Robert F. Hoffman - Allentown PA
Robert E. Stevens - Emmaus PA
Assignee:
Dow Corning Corporation - Midland MI
International Classification:
C08J 900
US Classification:
521110
Abstract:
Silicone surfactants having a siloxane backbone and polyether pendants having average atomic masses of 2250. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams without splits. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.
Polyether Silicone Surfactants For The Manufacture Of Urethane Foams
US Patent:
5492939, Feb 20, 1996
Filed:
Apr 12, 1995
Appl. No.:
8/420529
Inventors:
Michael A. Stanga - Midland MI
John H. Frey - Alburtis PA
Robert F. Hoffman - Allentown PA
Robert E. Stevens - Emmaus PA
John H. Frey - Alburtis PA
Robert F. Hoffman - Allentown PA
Robert E. Stevens - Emmaus PA
Assignee:
Dow Corning Corporation - Midland MI
International Classification:
C08J 900
US Classification:
521112
Abstract:
Silicone surfactants having a siloxane backbone and polyether pendants having average atomic masses of 2250. The surfactants of the invention operate in polyurethane foam compositions to provide stable foams over a range of surfactant concentrations while still producing product foams without splits. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.