William W Prichard, 837931 Riverview Ave, Pittsburgh, PA 15218

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William H Prichard

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License #: RS027606A - Expired
Category: Real Estate Commission
Type: Real Estate Salesperson-Standard

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William Prichard

William Prichard

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William Prichard

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William Prichard

William Prichard may refer to: William Prichard (bobsleigh), Swiss bobsledder; William Prichard (rector) (c. 15631629), Welsh clergyman and academic at the

William Prichard (Rector)

William Prichard (c. 1563 1629) was a Welsh clergyman and academic at the University of Oxford. Life. Prichard, from Monmouthshire, matriculated at Jesus

Us Patents

Pd/Re Hydrogenation Catalyst For Making Tetrahydrofuran And 1,4-Butanediol

US Patent:

4609636, Sep 2, 1986

Filed:

Jun 4, 1985

Appl. No.:

6/741264

Inventors:

Melinda A. Mabry - Wilmington DE
William W. Prichard - Hockessin DE
Stanislaw B. Ziemecki - Wilmington DE

Assignee:

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

International Classification:

B01J 2118
B01J 2364
C07D30708

US Classification:

502183

Abstract:

Palladium/rhenium-on-carbon catalyst; a method employing said catalyst to produce tetrahydrofuran, 1,4-butanediol or mixtures thereof in selectable ratios from a number of starting reactants; and a method for making the Pd/Re/C catalyst.

Hydrogenation Of Butadienepolyperoxide To Unsaturated Diols

US Patent:

4209651, Jun 24, 1980

Filed:

Feb 21, 1979

Appl. No.:

6/013236

Inventors:

William W. Prichard - Hockessin DE

Assignee:

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

International Classification:

C07C 3120
C07C 3302

US Classification:

568861

Abstract:

A process for the hydrogenation of butadienepolyperoxide in a suitable solvent, e. g. , tetrahydrofuran, at temperatures of 75. degree. -110. degree. C. and pressure above 2000 psia by contacting the butadienepolyperoxide and hydrogen in the presence of metallic silver. The process produces 1-butene-3,4-diol and 2-butene-1,4-diol.

Hydrogenation Of Butadienepolyperoxide With Activated Phase-Pure Nial.sub.3

US Patent:

4247722, Jan 27, 1981

Filed:

Mar 5, 1980

Appl. No.:

6/127456

Inventors:

Michael J. Kelley - Kennett Square PA
William W. Prichard - Hockessin DE

Assignee:

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

International Classification:

C07C 3120

US Classification:

568861

Abstract:

A process for hydrogenation of butadienepolyperoxide to 1,2-butanediol and 1,4-butanediol which comprises hydrogenating a mixture of butadienepolyperoxide in a solvent and with a catalyst comprising an activated phase-pure NiAl. sub. 3 at a temperature of from 75. degree. -120. degree. C. and a pressure of at least 1000 psi.

Process For Making Tetrahydrofuran And 1,4-Butanediol Using Pd/Re Hydrogenation Catalyst

US Patent:

4550185, Oct 29, 1985

Filed:

Dec 22, 1983

Appl. No.:

6/564372

Inventors:

Melinda A. Mabry - Wilmington DE
William W. Prichard - Hockessin DE
Stanislaw B. Ziemecki - Wilmington DE

Assignee:

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

International Classification:

C07D30708

US Classification:

549508

Abstract:

Palladium/rhenium-on-carbon catalyst; a method employing said catalyst to produce tetrahydrofuran, 1,4-butanediol or mixtures thereof in selectable ratios from a number of starting reactants; and a method for making the Pd/Re/C catalyst.

Process For The Preparation Of 2,5-Dihydrofuran

US Patent:

4255338, Mar 10, 1981

Filed:

Oct 12, 1979

Appl. No.:

6/084631

Inventors:

William W. Prichard - Hockessin DE

Assignee:

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

International Classification:

C07D30728

US Classification:

26034611

Abstract:

A process for the hydrogenation of butadienepolyperoxide in a suitable solvent, e. g. , tetrahydrofuran, at temperatures of 75. degree. -110. degree. C. and pressure above 2000 psia by contacting the butadienepolyperoxide and hydrogen in the presence of metallic silver. The process produces 1-butene-3,4-diol and 2-butene-1,4-diol.

Conversion Of Furan To 1,4-Butanediol And Tetrahydrofuran

US Patent:

4146741, Mar 27, 1979

Filed:

Aug 15, 1977

Appl. No.:

5/824841

Inventors:

William W. Prichard - Hockessin DE

Assignee:

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

International Classification:

C07C 3118

US Classification:

568865

Abstract:

Furan is hydrogenated in the presence of a nickel catalyst and a dicarboxylic acid having 4 to 10 carbons to produce 1,4-butanediol and tetrahydrofuran.

Oxidation Of Butadiene To Furan

US Patent:

4298531, Nov 3, 1981

Filed:

Dec 15, 1980

Appl. No.:

6/215711

Inventors:

Richard V. Lindsey - Hockessin DE
William W. Prichard - Hockessin DE

Assignee:

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

International Classification:

C07D30736

US Classification:

26034611

Abstract:

Process for preparing furan from 1,3-butadiene, the process comprising contacting the butadiene, at about 65. degree. C. to about 120. degree. C. , with a solution having a pH of 0-2. 5 and containing palladium ions and a heteropolyacid having a redox potential greater than 0. 5 volt, to produce furan.

Substituted Diphenyl-3-Formazancarbonitrile Insecticides

US Patent:

4069320, Jan 17, 1978

Filed:

Jan 23, 1976

Appl. No.:

5/651954

Inventors:

William W. Prichard - Hockessin DE
Francis Wilfred Stacey - Wilmington DE

Assignee:

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

International Classification:

A01N 920
C07C10700

US Classification:

424226

Abstract:

Substituted 1,5-diphenyl-3-formazancarbonitriles, certain of which are novel, are useful in controlling insects. A preferred compound is 1,5-bis(4-trifluoromethylphenyl)-3-formazancarbonitrile.

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