Donald C Grubbs

US Patent:

48926930, Jan 9, 1990

Filed:

Jul 24, 1987

Appl. No.:

7/077451

Inventors:

Anthony J. Perrotta - Monroeville PA
Donald K. Grubbs - Rector PA
William H. Quayle - Murrysville PA
Thomas B. Gurganus - New Kensington PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

B22D 1914
B32B 502

US Classification:

264108

Abstract:

A composite and a process for forming it are provided, said process comprising providing a substrate bearing crystalline and preferably single crystal filaments as growths on the substrate and forming a solid matrix encompassing the filaments. The composites are useful for aircraft, boat and auto skins and structural members.

US Patent:

52251152, Jul 6, 1993

Filed:

Oct 15, 1990

Appl. No.:

7/597535

Inventors:

Lawrence L. Musselman - Apollo PA
Chanakya Misra - Pittsburgh PA
Donald K. Grubbs - Rector PA
Donald R. Smith - Trafford PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

C09K 2102

US Classification:

252609

Abstract:

A filler material for use in a polymer or paper system. The filler material is formed by heating hydrotalcite to less than approximately 600. degree. C. to remove most of the carbonate and water of hydration; submersing the hydrotalcite in a NaBr solution for 1-24 hours in a nitrogen atmosphere to form a bromide intercalated hydrotalcite; and adding the bromide intercalated hydrotalcite as a 25-65 wt % filler in a polymer system selected from the group of polypropylene, polybutylene terephtalate, nylon, and acrylonitrile-butadiene-styrene.

US Patent:

48187291, Apr 4, 1989

Filed:

Oct 13, 1987

Appl. No.:

7/106815

Inventors:

Anthony J. Perrotta - Monroeville PA
Donald K. Grubbs - Rector PA
Edward S. Martin - New Kensington PA

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

C03C 1014

US Classification:

501 4

Abstract:

A process for preparing a stabilized high cristobalite from a gel comprising ultramicroscopic particles of SiO. sub. 2, Na. sub. 2 O, and Al. sub. 2 O. sub. 3 where the ratio of moles of Na. sub. 2 O to Al. sub. 2 O. sub. 3 is from about 0. 95 to about 1. 1, and the molar ratio of SiO. sub. 2 to Al. sub. 2 O. sub. 3 is between about 10 and about 40. After the gel is formed, it is heated at 800-1400. degree. C. for a time sufficient to form stabilized high cristobalite.