US 10,870,817 B2Granted

Peracid-containing particle

AssigneeSocieta Chimica Bussi S.P.A.

InventorsPaul Hugh Findlay, David Alan Pears, David John Duncalf, Melanie Jane Hughes, Lisa Elizabeth Scullion

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Abstract

A first aspect relates to a particle including: (a) at least one bleaching agent including an organic peroxyacid; (b) at least one component selected from: (i) saccharides and polysaccharides, and derivatives thereof; (ii) inorganic fillers selected from the group consisting of talcs, micas, zeolites, silicates, metal oxides and clays; and (iii) linear, branched and cross-linked polymers and copolymers; (c) at least one pH reducing agent; and (d) at least one chelating agent. Further aspects relate to a process for preparing the particle, a composition or a dough including the particle, and use of the particle in a cleaning composition, a dental care composition, a hair dyeing composition or decolouriser, an antimicrobial composition or a bleach composition.

An extruded particle obtained by a process comprising the steps of:

(1) forming a mixture consisting of
(a) at least one bleaching agent comprising 6-phthalimido-peroxy-hexanoic acid
(bi) at least one component selected from potato starch, pregellatinised potato starch, maize starch, wheat starch, rice starch and partially pregellatinised maize starch;
or
sucrose, mannitol, isomalt, xylitol, sorbitol, trehalose and lactitol;
(bii) at least one component selected from linear, branched and cross-linked polymers and copolymers selected from a functionalised poly(vinyl) alcohol, a linear, branched or cross-linked polymer or copolymer prepared from one or more of the following monomers:
(meth)acrylic acid, acrylic acid, maleic acid, fumaric acid, itaconic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, and vinyl acetate;
(c) at least one pH reducing agent selected from citric acid, tartaric acid, tartronic acid, oxalic acid, maleic acid, itaconic acid, malonic acid, fumaric acid, hydrochloric acid, sulfuric acid, phosphoric acid, gluconic acid, lactic acid, toluene sulfonic acid, ascorbic acid, acetic acid, and methane sulfonic acid;
and
(d) at least one chelating agent selected from ethylenediaminetetraacetic acid (EDTA), glutamic acid diacetic acid (GLDA), diethylene triamine pentaacetic acid (DTPA), hydroxyethylethylenediaminetriacetic acid (HEDTA), nitrilotriacetic acid (NTA), ethanoldiglycinic acid (EDG), 2,2′,2″,2″-(1,2-propanediyldinitrilo)tetraacetic acid (PDTA), glucoheptonate, N,N-bis(carboxymethyl)-L-glutamic acid, nitroacetic acid, phosphoric acid and polymers of phosphoric acid, aminopolyphosphonic acid, 1-hydroxyethylene-1, 1-diphosphonic acid (HEDP), diethylenetrianime penta(methylene phosphonic acid) (DTPMP), the sodium salt of diethylene triamine penta (methylene phosphonic acid), 2-phosphonobutane-1,2,4-tricarboxylic acid and amino tri(methylene phosphonic acid (ATMP);
(2) extruding the mixture obtained in step (1);
(3) processing the extruded mixture obtained in step (2) to form the extruded particle;
and
(4) drying the particle obtained in step (3).

11 more elements

Facts

Application

15/116,361Filed 10 Feb 2015

Priority

GB 1402257.810 Feb 2014

Published

US 2016/0348037 A11 Dec 2016

Granted

22 Dec 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification32 codes

C11D 3/3945
Organic or inorganic per-compounds: organic per-compounds
A61K 8/022
Solid or semisolid forms: powders; Compacted Powders
A61K 8/365
Carboxylic acids; Salts or anhydrides thereof: hydroxycarboxylic acids; Ketocarboxylic acids
A61K 8/38
Containing oxygen: percompounds, e.g. peracids

Abstract

Claims15