1
Kenneth R Buser, Milton J Roedel, Eustathios Vassiliou: Simulated granite and its preparation. E I Du Pont de Nemours and Company, June 26, 1979: US04159301 (69 worldwide citation)

A simulated granite and its preparations are provided. The granite comprises (A) about 35 to 95% by volume of a matrix consisting essentially of (1) at least 34% by volume of polymer, preferably predominantly an acrylic polymer, having a refractive index (n.sub.D) between 1.4 and 1.65 and (2) about ...


2
Kenneth R Buser, Thomas A Rettig: Recovery of polyester from scrap by high shear conditions. E I Du Pont de Nemours and Company, Donald W Huntley, July 22, 1986: US04602046 (37 worldwide citation)

A method for the recovery of plastic material such as polyester from scrap material such as photographic film having a polyester base and at least one layer of a macromolecular organic polymer. The process includes mixing small pieces of the scrap material in a solution having a scrap solids concent ...


3
Kenneth R Buser, Thomas A Rettig: Recovery of silver from photographic films by high shear conditions. E I Du Pont de Nemours and Company, Donald W Huntley, September 16, 1986: US04612057 (21 worldwide citation)

A method for the recovery of silver from photographic film having a polyester base and a macromolecular organic polymer coating to which is adhered a light sensitive silver emulsion layer. The process includes mixing small film pieces in a hot aqueous liquid having a solids concentration level of at ...


4


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