Ralph G Miller

US Patent:

6755942, Jun 29, 2004

Filed:

Aug 14, 2000

Appl. No.:

09/638549

Inventors:

Ralph Thomas Baker - Los Alamos NM
Ralph Newton Miller - Newark DE
Viacheslav Alexandrovich Petrov - Hockessin DE
Velliyur Nott Mallikarjuna Rao - Wilmington DE
Allen Capron Sievert - Elkton MD

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

B01D 334

US Classification:

203 67, 570134, 570164, 570165, 570166, 570167, 570168, 570169

Abstract:

The invention relates to azeotropic compositions of halogenated propanes with HF.

US Patent:

6858762, Feb 22, 2005

Filed:

Jun 12, 2003

Appl. No.:

10/460270

Inventors:

Ralph Thomas Baker - Los Alamos NM, US
Ralph Newton Miller - Newark DE, US
Viacheslav Alexandrovich Petrov - Hockessin DE, US
Velliyur Nott Mallikarjuna Rao - Wilmington DE, US
Allen Capron Sievert - Elkton MD, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C017/00
C07C017/08
C07C019/08

US Classification:

570165, 570134, 570164, 570166, 570167, 570168, 570169, 25218211, 25218212, 25218313, 25218232

Abstract:

A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CARRCBRR(where A, B, R, R, R, and Rare as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CRR═CRRin a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CFCFCClCHCCl, CFCClCHCHCl and CFCClCHCHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.

US Patent:

20050080302, Apr 14, 2005

Filed:

Oct 1, 2004

Appl. No.:

10/956672

Inventors:

Ralph Baker - Los Alamos NM, US
Ralph Miller - Newark DE, US
Viacheslav Petrov - Hockessin DE, US
Velliyur Rao - Wilmington DE, US
Allen Sievert - Elkton MD, US

International Classification:

C07C019/08

US Classification:

570172000

Abstract:

A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CARRCBRR(where A, B, R, R, R, and Rare as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CRR═CRRin a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CFCFCClCHCCl, CFCClCHCHCl and CFCClCHCHClF. These compounds are useful as intermediates for producing hydrofluorocarbons. Azeotropes of CClFCHCFwith HF and azeotropes of CFCHCHFwith HF are also disclosed; as are process for producing such azeotropes. A process for purification of certain hydrofluorocarbons and/or chloro-precursors thereof from mixtures of such compounds with HF is also disclosed.

US Patent:

20080108852, May 8, 2008

Filed:

May 31, 2007

Appl. No.:

11/809485

Inventors:

Ralph Thomas Baker - Los Alamos NM, US
Ralph Newton Miller - Newark DE, US
Viacheslav Alexandrovich Petrov - Hockessin DE, US
Velliyur Nott Mallikarjuna Rao - Wilmington DE, US
Allen Capron Sievert - Elkton MD, US

International Classification:

C07C 17/383
C07C 19/08

US Classification:

570134, 570178

Abstract:

A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CARRCBRR(where A, B, R, R, R, and Rare as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CRR═CRRin a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF.New compounds disclosed include CFCFCClCHCCl, CFCClCHCHCl and CFCClCHCHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.Azeotropes of CClFCHCFwith HF and azeotropes of CFCHCHFwith HF are also disclosed; as are process for producing such azeotropes.A process for purification of certain hydrofluorocarbons and/or chloro-precursors thereof from mixtures of such compounds with HF is also disclosed.

US Patent:

20120119139, May 17, 2012

Filed:

Apr 1, 2011

Appl. No.:

13/078320

Inventors:

Ralph Thomas Baker - Los Alamos NM, US
Ralph Newton Miller - Newark DE, US
Viacheslav Alexandrovich Petrov - Hockessin DE, US
Velliyur Nott Mallikarjuna Rao - Wilmington DE, US
Allen Capron Sievert - Elkton MD, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C09K 3/00

US Classification:

25218212

Abstract:

A liquid phase process is disclosed for producing halogenated alkane adducts of the formula CARRCBRR(where A, B, R, R, R, and Rare as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CRR═CRRin a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF.Azeotropes of CClFCHCFwith HF and azeotropes of CFCHCHFwith HF are also disclosed; as are process for producing such azeotropes.