Kathryn L Hayes

US Patent:

6455744, Sep 24, 2002

Filed:

Nov 6, 2001

Appl. No.:

09/985786

Inventors:

Gauri Sankar Lal - Whitehall PA
Kathryn Sue Hayes - Plymouth Meeting PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C 2522

US Classification:

570143

Abstract:

A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused. One or more of the rings can contain heteroatoms, such as oxygen, nitrogen, or sulfur, and can contain one or more substitutions, in addition to the hydroxy substitution.

US Patent:

6515191, Feb 4, 2003

Filed:

Jul 17, 2002

Appl. No.:

10/197969

Inventors:

Gauri Sankar Lal - Whitehall PA
Kathryn Sue Hayes - Plymouth Meeting PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C 2522

US Classification:

570143

Abstract:

A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused. One or more of the rings can contain heteroatoms, such as oxygen, nitrogen, or sulfur, and can contain one or more substitutions, in addition to the hydroxy substitution.

US Patent:

6706933, Mar 16, 2004

Filed:

Dec 30, 2002

Appl. No.:

10/334183

Inventors:

Gauri Sankar Lal - Whitehall PA
Kathryn Sue Hayes - Plymouth Meeting PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C 2522

US Classification:

570123, 570143

Abstract:

A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds and a method of preparing intermediates thereof. The hydroxy aromatic compound can be a mono-, bi- or tricyclic aromatic in which the rings are separate or fused. One or more of the rings can contain heteroatoms, such as oxygen, nitrogen, or sulfur, and can contain one or more substitutions, in addition to the hydroxy substitution.

US Patent:

6894200, May 17, 2005

Filed:

Feb 3, 2003

Appl. No.:

10/357897

Inventors:

Axel Klauck-Jacobs - Whitehall PA, US
Kathryn Sue Hayes - Plymouth Meeting PA, US
Reiner Taege - Heiligenhaus, DE
William Casteel - Emmaus PA, US
Gauri Sankar Lal - Whitehall PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C025/22

US Classification:

570143, 570123

Abstract:

A method of preparing vicinal difluoro aromatic compounds in high yield from hydroxy aromatic compounds using various bases and a method of preparing intermediates thereof. A method for making a vicinal difluoro halogenated aromatic compound including providing a tetrafluoro derivative of a halogen substituted aromatic compound, wherein the tetrafluoro derivative has two fluorine atoms on each of two adjacent carbons and at least one additional halogen substituent; reacting the tetrafluoro derivative with a reducing agent in presence of a base for a reaction time sufficient to form the vicinal difluoro halogenated aromatic compound containing two vicinal fluorine substituents and the at least one additional halogen substituent, wherein the reducing agent is used in a reducing agent effective amount sufficient to retain the at least one additional halogen substituent.

US Patent:

7030283, Apr 18, 2006

Filed:

Jan 23, 2004

Appl. No.:

10/763366

Inventors:

Gauri Sankar Lal - Whitehall PA, US
Kathryn Sue Hayes - Plymouth Meeting PA, US
Guido Peter Pez - Allentown PA, US

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C 17/25
C07C 17/23

US Classification:

570157, 570140, 570141, 570142, 570153, 570155, 570156

Abstract:

This invention relates to a process for the preparation of 1,1-difluoroolefins, e. g. , difluorovinyl cycloaliphatic compounds such as difluorovinylcyclohexane and derivatives by the dehydrofluorination of a trifluoromethyl-substituted cycloaliphatic compound and the resulting compositions. This method utilizes a “sterically hindered super-base” system represented by the formula MNRR; where M is Na or K and R is a secondary, or tertiary alkyl or cycloalkyl group of amines for effecting dehydrofluorination of the trifluoromethyl group leading to the difluorovinyl based cycloaliphatic compounds. The sterically hindered super base can be formed by the, in situ, reaction of a sodium or potassium alkoxide, e. g. , KtBuO with a lithium dialkylamide where the lithium is bonded to nitrogen atom of an amine bearing secondary or tertiary aliphatic groups.

US Patent:

58862277, Mar 23, 1999

Filed:

Oct 28, 1997

Appl. No.:

8/958894

Inventors:

Gamini Ananda Vedage - Bethlehem PA
Kathryn Sue Hayes - Norristown PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C20948

US Classification:

564490

Abstract:

Disclosed is an improved process for the catalytic hydrogenation of cyanopropionaldehyde alkyl acetals (CPAA) to form the aminobutyraldehyde alkyl acetals. The basic process comprises hydrogenating the cyanopropionaldehyde alkyl acetals by contacting said cyanopropionaldehyde alkyl acetals with hydrogen in the presence of a nickel or cobalt catalyst under conditions for reducing the nitrile group to the primary amine. The improvement resides in effecting the hydrogenation of a cyanopropionitrile dialkyl acetal feedstock containing contaminating levels of cyanopropionaldehyde in the presence of a secondary alkanol or water.

US Patent:

59327693, Aug 3, 1999

Filed:

Jan 26, 1998

Appl. No.:

9/013624

Inventors:

Gamini Ananda Vedage - Bethlehem PA
Kathryn Sue Hayes - Norristown PA
Malee Leeaphon - Allentown PA
John Nelson Armor - Orefield PA

Assignee:

Air Products and Chemicals, Inc. - Allentown PA

International Classification:

C07C20938

US Classification:

564480

Abstract:

A process for the production of aliphatic amines by reacting aliphatic alcohols with an amino compound in the presence of a catalyst containing at least two inter-dispersed metals, in a multi-metallic structure, in which at least one of the metals is nickel or cobalt, and at least one other metal is palladium, platinum, rhodium, ruthenium, or copper.

US Patent:

20170218115, Aug 3, 2017

Filed:

Dec 30, 2016

Appl. No.:

15/394991

Inventors:

- Allentown PA, US
Shiying ZHENG - Center Valley PA, US
Kathryn Sue HAYES - Plymouth Meeting PA, US

International Classification:

C08G 59/54
C08G 59/24
C08G 59/44

Abstract:

A composition including an amidoamine curing agent composition or a polyamide curing agent composition are disclosed. The composition includes the reaction products of (1) an amine component including at least one multifunctional amine of structure (I):wherein each R is independently H or CHCHCHNH; Ris H, CHCHCHN—, C1-C21 alkyl, or C1-C21 alkenyl; n is 2; and m is 1 or 2, with (2) a fatty acid or ester component selected from the group consisting of a dimer fatty acid or ester component, a monofunctional fatty acid or ester component, and combinations thereof. The amidoamine curing agent composition remains as liquid at ambient temperature.