Leuco colorants as bluing agents in laundry care composition

US10717950B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Gregory Scot Miracle · Monroe, US
• Daniel Dale Ditullio, Jr. · Hamilton, US
• Haihu Qin · Greer, US
• Sanjeev K. Dey · Spartanburg, US
• Wesley A. Freund · Simpsonville, US
• Randy D. Petrea · Spartanburg, US

Key dates

• Filing date: Oct 11, 2018
• Grant date: Jul 21, 2020
• Expiry date: Oct 11, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A laundry care composition including (a) at least one laundry care ingredient and (b) a leuco composition including at least one leuco compound. The leuco compound including a leuco moiety and a polyalkyleneoxy moiety covalently bound to the leuco moiety. The polyalkyleneoxy moiety includes at least one ethylene oxide group and at least one propylene oxide group. A method of treating a textile includes the steps of (a) providing such a laundry care composition; (b) adding the laundry care composition to a liquid medium; (c) placing textile articles in the liquid medium; (d) optionally, rinsing the textile; and (e) drying the textile articles.