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Patents

Laser Peening of Thin Cross-Section Components
Lloyd A. Hackel, John M. Halpin, Fritz B. Harris, Jr.
U.S. Patent 6,805,970 B2
October 19, 2004
The properties of a metal piece are altered by laser peening the piece on the first side using an acoustic-coupling material connected to the second side and then laser peening the piece on the second side using an acoustic-coupling material connected to the first side.

Solid Materials for Removing Metals and a Fabrication Method
Paul R. Coronado, John G. Reynolds, Sabre J. Coleman
U.S. Patent 6,806,227 B2
October 19, 2004
Solid materials were developed to remove contaminating metals and organic compounds from aqueous media. The contaminants are removed by passing the aqueous phase through the solid materials, which can be in molded, granular, or powder form. The solid materials adsorb the metals and organics, leaving a purified aqueous stream. The solid materials consist of solgel or solgel and granulated activated carbon mixtures. The species-specific adsorption occurs through specific chemical modifications of the solids tailored toward the contaminant(s). The contaminated solid materials can then be disposed, or the contaminant can be removed and the solids recycled.

Preparation of Hydrophobic Organic Aerogels
Theodore F. Baumann, Joe H. Satcher, Jr., Alexander E. Gash
U.S. Patent 6,806,299 B2
October 19, 2004
These synthetic methods are used to prepare hydrophobic organic aerogels. One method involves the solgel polymerization of 1,3-dimethoxybenzene or 1,3,5-trimethoxybenzene with formaldehyde in nonaqueous solvents. In a procedure analogous to the preparation of resorcinolformaldehyde aerogels, this approach generates wet gels. These gels can be dried using either supercritical solvent extraction to generate new organic aerogels or air-dried to produce an xerogel. Other methods involve the solgel polymerization of 1,3,5-trihydroxybenzene (phloroglucinol) or 1,3-dihydroxybenzene (resorcinol) and various aldehydes in nonaqueous solvents. These methods use a procedure analogous to the one- and two-step base acid–catalyzed polycondensation of phloroglucinol and formaldehyde, but the base catalyst is triethylamine. The methods can be applied to a variety of other solgel precursors and solvent systems. These hydrophobic organic aerogels have numerous applications for material absorbers and waterproof insulation.

Awards



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UCRL-52000-05-1/2 | January 7, 2005