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US 4,486,327 AGranted
Bodies containing stabilized bleach activators
AssigneeThe Procter & Gamble Company
InventorsAlan P. Murphy, Ali Kassamali, John D. Curry
Life of this patent
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Abstract
The invention relates to bodies containing bleach activators. The bodies comprise specific peroxygen bleach activators and select binder or enrobing materials. When formulated in such bodies the peroxygen bleach activators have excellent storage stability and maintain excellent dispersibility in wash water.
Claims17
A body containing a stabilized, particulate bleach activator comprising:
- (a) from about 50% to about 99.5%, by weight of said body, of a bleach activator compound of the general formula ##STR34## where R is a straight or branched alkyl or alkenyl group having from about 4 to about 14 carbon atoms, R.sup.1 is H or C.sub.2 H.sub.5, X' is Cl, OCH.sub.3 or OC.sub.2 H.sub.5 and L is a leaving group selected from ##STR35## wherein R.sup.2 is an alkyl chain containing from about 1 to about 8 carbon atoms, and Y is --SO.sub.3.sup.- M.sup.+ or --COO.sup.- M.sup.+ wherein M.sup.+ is sodium or potassium;
- and
- (b) from about 2% to about 50% of a binder material selected from the group consisting of nonionic surfactants, polyethylene glycols, anionic surfactants, film forming polymers, fatty acids and mixtures thereof wherein said binder does not melt below about 40.degree. C.;
- wherein (a) and (b) are substantially evenly distributed throughout said body, the density of said body is above about 1.06 g/cc and said body contains less than about 5% water.
1 more element
A body containing a bleach activator comprising by weight:
- (a) from about 50% to about 99.5% of a peroxygen bleach activator compound having the general formula ##STR36## wherein R is a straight or branched chain alkyl or alkenyl having from about 4 to about 14 carbon atoms;
- R.sup.1 is H or C.sub.2 H.sub.5, X' is Cl, an L is selected from the group consisting of ##STR37## wherein M is sodium or potassium;
- and (b) about 4% to about 15% of a binder material selected from the group consisting of sorbitan fatty acid esters, ethoxylated varieties of these sorbitan esters having an average total level of ethoxylation of from about 4 to about 8 moles of ethylene oxide per mole of sorbitan;
- linear alkylbenzenesulfonates in which the average number of carbon atoms in the alkene moiety is about 11 to about 13;
- aliphatic alcohols containing between 9 and 18 carbon atoms ethoxylated with between 40 and 80 moles of ethylene oxide;
- sodium polyacrylate;
- polyethylene glycols having a molecular weight of from about 4000 to about 8000, fatty acids containing from about 12 to about 18 carbon atoms;
- and mixtures thereof;
- the density of said body is from about 1.10 g/cc to about 1.30 g/cc, and said body contains less than about 1.5% water.
6 more elements
Dependencies are inferred from the claim text.