David J Babb

US Patent:

20090312450, Dec 17, 2009

Filed:

Jul 26, 2006

Appl. No.:

11/996505

Inventors:

Charles A. Martin - Pearland TX, US
Aaron W. Sanders - Missouri City TX, US
Jimmy D. Earls - Lake Jackson TX, US
Kurt D. Olson - Freeland MI, US
John R. Briggs - Midland MI, US
Alan K. Schrock - Lake Jackson TX, US
Zenon Lysenko - Midland MI, US
David A. Babb - Lake Jackson TX, US

International Classification:

C08G 18/34
C08G 18/32
C07C 229/02

US Classification:

521157, 528 85, 521164, 560170

Abstract:

Polyurethanes, and rigid polyurethane foams in particular, are made using certain amides of modified fatty acids. The fatty acid groups are substituted hydroxymethyl, N-hydroxyalkyl aminoalkyl or hydroxy-substituted ester groups. The amide portion of the molecule contains hydroxyalkyl or other hydroxyl-substituted organic groups bonded to the amide nitrogen.

US Patent:

63259567, Dec 4, 2001

Filed:

Aug 26, 1998

Appl. No.:

9/140004

Inventors:

Bharat I. Chaudhary - Pearland TX
Thoi H. Ho - Lake Jackson TX
Seema V. Karande - Lake Jackson TX
Robert H. Terbrueggen - South Pasadena CA
David A. Babb - Lake Jackson TX
Clark H. Cummins - Midland MI
Michael J. Mullins - Lake Jackson TX
H. Craig Silvis - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B29C 4402
B29C 4420

US Classification:

264 50

Abstract:

The invention includes a process comprising (a) forming a polymeric admixture including at least one polyolefin which has been prepared using a single site catalyst and at least a crosslinking amount of at least one poly(sulfonyl azide) crosslinking agent; (b) shaping the resulting admixture; and (c) heating the resulting shaped admixture to a temperature at least the decomposition temperature of the crosslinking agent. The steps take place in any sequence and optionally include substeps. The single site catalyst is preferably a constrained geometry or metallocene catalyst, but optionally another transition metal catalyst which is not a traditional Ziegler Natta Ti/MgCl. sub. 2 catalyst such as a vanadium catalyst. The invention further includes all compositions obtainable by the process of the invention as well as all articles formed from these compositions. The articles are preferably thermoformed, compression molded, injection molded, extruded, cast, blow molded, blown, profile extruded, spun, foamed or molded of any composition of the invention.