Antimicrobial positively charged particles

US5154932A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• John L. Burba, III · Angleton, US
• John L. Alexander · Lake Jackson, US
• Arthur E. Read, Jr. · Lake Jackson, US
• Wilfred W. Wilson · Freeport, US

Key dates

• Filing date: Sep 4, 1990
• Grant date: Oct 13, 1992
• Expiry date: Sep 4, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2050/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Formulations or products are caused to be active antimicrobials by the addition thereto of at least one effective amount of at least one crystalline mixed metal hydroxide (MMOH) conforming substantially to the formula EQU Li.sub.m D.sub.d T(OH) (m+2d+3+na) (A.sup.n).sub.a.xH.sub.2 O where m is zero to one, D is a divalent metal, d is from zero to 4, T is a trivalent metal, A represents at least one anion or negative-valence radical, (m+2d+3+na) is equal or to greater than 3, (m+d) is greater than zero, and xH.sub.2 O represents excess waters of hydration. The MMOH forms an adduct with, an coats, the microbes, thereby deactivating the microbes.