John K Mcdowell

US Patent:

51475553, Sep 15, 1992

Filed:

Jul 30, 1991

Appl. No.:

7/738080

Inventors:

J. Michael Brown - The Woodlands TX
John F. McDowell - Willis TX

Assignee:

Betz Laboratories, Inc. - Trevose PA

International Classification:

C02F 510

US Classification:

210698

Abstract:

A method of treating water to inhibit the formation of scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of calcium and barium scales in aqueous systems such as cooling water systems. The method comprises introducing into the aqueous system a polyepoxysuccinic acid of the general formula ##STR1## when n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na. sup. +, NH. sub. 4. sup. +, or K. sup. + and R is hydrogen, C. sub. 1-4 alkyl or C. sub. 1-4 substituted alkyl.

US Patent:

50629620, Nov 5, 1991

Filed:

May 4, 1990

Appl. No.:

7/518045

Inventors:

J. Michael Brown - The Woodlands TX
John F. McDowell - Spring TX

Assignee:

Betz Laboratories, Inc. - Trevose PA

International Classification:

C02F 510

US Classification:

210698

Abstract:

A method of treating water to inhibit the formation of scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of calcium and barium scales in circulating aqueous systems such as cooling water systems. The method comprises introducing into the aqueous system a polyepoxysuccinic acid of the general formula ##STR1## where n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na. sup. +, NH. sub. 4. sup. +, or K. sup. + and R is hydrogen, C. sub. 1-4 alkyl or C. sub. 1-4 substituted alkyl.

Address:

3135 Stanton St, Houston, TX 77025

VIN:

1GNFK130X7R405057

Make:

CHEVROLET

Model:

TAHOE K1500

Year:

2007