1
Herman Stone, Gregory Rusenko: Process and apparatus for the removal of fine particulate matter and vapors from process exhaust air stream. PMC, Davis Hoxie Faithfull & Hapgood, June 23, 1992: US05123936 (55 worldwide citation)

This invention relates to a process and apparatus for removing fine particulate matter and vapors from a process exhaust air stream, and particularly those emitted during post-production curing or post-treatment of foamed plastics, such as polyurethane foam, in which the exhaust air stream is passed ...


2
Herman Stone, Peter D Pauly: Process for a polyurethane foam containing fragrance. Tenneco Chemicals, James P Scullin, October 7, 1980: US04226944 (55 worldwide citation)

Fragrance-emitting articles comprising a polyurethane foam containing a particulate filler and a fragrance material, and a method of making such articles, are disclosed. The method includes the essential steps of pre-mixing particulate filler and fragrance and dispersing the pre-mix in a liquid poly ...


3
Herman Stone, Peter D Pauly, Michael P Pcolinsky Jr: Intumescent flexible polyurethane foam. G F C Foam Corporation, Thomas E Spath, James P Scullin, February 15, 1983: US04374207 (44 worldwide citation)

Flexible, resilient, polyurethane foam having improved flame retardancy and intumescent properties is prepared from a reaction mixture comprising a polyether polyol, an organic polyisocyanate, a blowing agent, a surfactant, a catalyst, a flame retardant, and hydrated alumina. Alternatively, the mixt ...


4
Herman Stone, Steve Lichvar, Charles W Bredbenner, Richard Rupp, Elmer Minnich: Blowing agents for polyurethane foam. PMC, Davis Hoxie Faithfull & Hapgood, March 6, 1990: US04906672 (33 worldwide citation)

Improved methods are provided for incorporating carbon dioxide and carbon dioxide generating compounds into polyurethane foam forming compositions as blowing agents to eliminate or reduce the amount of low boiling liquid auxiliary blowing agents, such as methylene chloride and chlorofluorocarbons co ...


5
Herman Stone: Density reduction in flexible polyurethane foams. PMC, Davis Hoxie Faithfull & Hapgood, April 9, 1991: US05006569 (22 worldwide citation)

Improved, flexible, open-celled polyurethane foams of reduced density, but with stability and firmness characteristics comparable to those of standard foams, are described. The foams are formed in situ from the reaction, in the presence of a catalyst, of an isocyanate, one or more blowing agents inc ...


6
Michael Pcolinsky, Steven Lichvar, Herman Stone: Method for reducing volatile emissions generated during the preparation of foams and fabrication of foam products. PMC, Leydig Voit & Mayer, September 5, 1995: US05447963 (20 worldwide citation)

Methods for reducing the quantity of emissions emanating from a foam-forming composition during the preparation of a fully-cured foam comprising contacting emissions emanating from the foam-forming composition during preparation of the fully-cured foam with vegetable oil. A further aspect provides a ...


7
Herman Stone: Process for rapid cooling of polyurethane foam. PMC, Davis Hoxie Faithfull & Hapgood, July 7, 1992: US05128379 (16 worldwide citation)

An improved process for rapidly cooling hot freshly polymerized foam is provided by passage of a fluid coolant stream having a water vapor content which initially is in the range from slightly below to above the dew point. In preferred embodiments the cooling fluid stream is recirculated, and auxili ...


8
Herman Stone: Reduction of firmness in flexible polyurethane foam by addition of monofunctional alcohols, polyesters, and polyethers. PMC, Davis Hoxie Faithfull & Hapgood, August 21, 1990: US04950695 (15 worldwide citation)

Improved, flexible, open-celled polyurethane foams of reduced firmness, but with densities comparable to those of standard foams, are described. The foams are formed in situ from the reaction of isocyanate, one or more blowing agents including water, a foam stabilizer, polyether polyols or polyester ...


9
Herman Stone, Peter D Pauly: Filled detergent foam made by a one shot process. Tenneco Chemicals, James P Scullin, March 18, 1980: US04193887 (13 worldwide citation)

Filled detergent hydrophilic flexible polyurethane foams having a reduced and controlled rate of release of detergent from the foam are provided.


10
Herman Stone: Production of polyurethane foam of reduced tendency to form embers when burned. Tenneco Chemicals, James P Scullin, February 17, 1981: US04251635 (12 worldwide citation)

Flexible polyurethane foam having reduced tendency to form burning embers when it is ignited and burned is provided by incorporating into the reaction mixture before foaming a ketone or benzaldehyde.