Howard D Angstadt

US Patent:

40228410, May 10, 1977

Filed:

Oct 31, 1968

Appl. No.:

4/772421

Inventors:

Howard P. Angstadt - Media PA
William P. Griffin - Bethel Park PA

Assignee:

Sun Company, Inc. - Philadelphia PA

International Classification:

C07C17902
C07C17904

US Classification:

260610B

Abstract:

Organometallic complexes formed between hexaalkylphosphoramides (HAPA) and metal salts, including rare earth metals, have been found to be effective catalyst for the oxidation of secondary and tertiary alkylaromatics to form valuable oxidation products, particularly the corresponding hydroperoxides. Novel complexes formed between HAPA and metal salts of the lanthanide series have been found to be especially effective in the selective formation of the hydroperoxides at high conversion rates. By substantially increasing the agitation and/or aeration of the reaction medium it is possible to increase these high conversion rates still further.

US Patent:

43200320, Mar 16, 1982

Filed:

Sep 5, 1980

Appl. No.:

6/184588

Inventors:

Howard P. Angstadt - Media PA

Assignee:

Suntech, Inc. - Philadelphia PA

International Classification:

B01J 2112
B01J 2389

US Classification:

252455R

Abstract:

In the process of hydrogenating an aromatic dinitrile to the corresponding di-primary amine in the presence of a catalyst, the improvement of using as catalyst a cobalt catalyst promoted with rhodium where the weight ratio of rhodium to cobalt is 1. 0 or less.

US Patent:

41043120, Aug 1, 1978

Filed:

Nov 21, 1974

Appl. No.:

5/526036

Inventors:

Howard P. Angstadt - Media PA
William P. Griffin - Pittsburgh PA

Assignee:

Sun Ventures, Inc. - St. Davids PA

International Classification:

C07C17904

US Classification:

260610B

Abstract:

Organometallic complexes formed between hexaalkylphosphoramides (HAPA) and transition metal salts, including rare earth metals, have been found to be effective catalysts for the oxidation of olefins to form valuable oxidation products, particularly the corresponding hydroperoxides.

US Patent:

39593371, May 25, 1976

Filed:

Apr 15, 1975

Appl. No.:

5/568360

Inventors:

Ronald D. Bushick - Glen Mills PA
Howard P. Angstadt - Media PA

Assignee:

Sun Ventures, Inc. - Philadelphia PA

International Classification:

C07C12014

US Classification:

260465C

Abstract:

An ammoxidation process for preparing nitriles from m- and p-xylene whereby the formation of carbon oxides is held to a minimum which comprises reacting the xylene and ammonia at a temperature of from about 375. degree. C. to about 500. degree. C. and in the presence of added oxygen, the molar ratio of ammonia to xylene being about 3:1 or less, the molar ratio of oxygen to xylene being about 3:1 or less, the volume percent concentration of the feed being preferably about 3% to 10% hydrocarbon, 7% to 20% ammonia, and 10% to 20% oxygen, and the catalyst for said reaction comprising at least about 1 to 10% by weight of a vanadium bronze supported on. alpha. -alumina.

US Patent:

40703932, Jan 24, 1978

Filed:

Jun 1, 1976

Appl. No.:

5/691757

Inventors:

Howard P. Angstadt - Media PA
Jack D. Tinkler - Wilmington DE
Richard V. Norton - Wilmington DE
Ronald D. Bushick - Glen Mills PA

Assignee:

Sun Ventures, Inc. - Radnor PA

International Classification:

C07C12014

US Classification:

260465C

Abstract:

In an ammoxidation process where reactant gases comprised of a lower alkyl-substituted aromatic hydrocarbon, oxygen, and ammonia are passed over an ammoxidation catalyst in a fixed or fluidized bed system, the improvement of reducing combustion of hydrocarbon and ammonia and achieving a more favorable product distribution by distributing a stream containing reactant oxygen throughout the catalyst bed.

US Patent:

47433850, May 10, 1988

Filed:

Feb 18, 1986

Appl. No.:

6/830608

Inventors:

Howard P. Angstadt - Media PA
Donald F. Rugen - Wilmington DE
John L. Cayias - Richardson TX

Assignee:

Sun Refining and Marketing Company - Philadelphia PA

International Classification:

E21B 4322

US Classification:

252 8554

Abstract:

There is provided herein a process and composition for the enhanced recovery of oil from subterranean formations comprising injecting in combination with steam a composition comprising (a) an anionic surfactant and (b) a hydrotrope.

US Patent:

39593363, May 25, 1976

Filed:

Apr 15, 1975

Appl. No.:

5/568356

Inventors:

Ronald D. Bushick - Glen Mills PA
Howard P. Angstadt - Media PA

Assignee:

Sun Ventures, Inc. - Philadelphia PA

International Classification:

C07C12014

US Classification:

260465C

Abstract:

An ammoxidation process for the preparation of nitriles by reaction of m- or p-xylene with ammonia and oxygen using as catalyst an. alpha. -alumina supported vanadiumalkali metal bronze promoted with niobium, whereby a high proportion of dinitrile product is obtained. The invention also embodies the niobium promoted catalyst.

US Patent:

47691611, Sep 6, 1988

Filed:

Feb 18, 1986

Appl. No.:

6/830607

Inventors:

Howard P. Angstadt - Media PA

Assignee:

Sun Refining and Marketing Company - Philadelphia PA

International Classification:

E21B 4322
E21B 4324

US Classification:

252 8554

Abstract:

There is provided herein a process and composition for the enhanced recovery of oil from subterranean formations comprising injecting in combination with steam a composition comprising (a) an anionic surfactant (b) a hydrotrope, and (c) an alkali metal silicate. In a further embodiment, the anionic surfactant and alkali metal silicate alone may be used in a steam recovery process as an effective oil recovery method.