Detergent tablet
AssigneeThe Procter & Gamble Company
InventorChristopher James Binder
Life of this patent
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Abstract
A multi-phase detergent tablet for use in a washing machine, the tablet comprising a first phase in adhesive contact with one or more second phases, at least one second phase being in the form of a compressed particulate solid incorporating liquid adhesive and having an average porosity of less than about 0.15 ml/g. The liquid adhesive is preferably selected from polyethylene glycols having an average molecular weight in the range from about 200 to about 700 and is preferably applied by post-addition to the particulate solid prior to compression. The multi-phase tablets provide improved interphase adhesivity, robustness and strength together with excellent dissolution and cleaning characteristics.
Claims11
A multi-phase detergent tablet for use in a washing machine, the tablet comprising a first phase in adhesive contact with one or more second phases, and at least one second phase being in the form of a compressed particulate solid incorporating liquid adhesive comprising ployethylene glycol having an average molecular weight in the range from about 200 to about 700 having an average porosity of less than about 0.15 ml/g, and compressed by a pressure of from about 70 kg/cm2 to about 270 kg/cm2 wherein the first phase is compressed at a pressure greater than that of the second phase.
A multi-phase detergent tablet for use in a washing machine, the tablet comprising a first phase in adhesive contact with one or more second phases, and at least one second phase being in the form of a compressed particulate solid incorporating liquid adhesive selected from polyethylene glycols having an average molecular weight in the range from about 200 to about 700, and compressed by a pressure of from about 70 kg/cm2 to about 270 kg/cm2 wherein the first phase is compressed at a pressure greater than that of the second phase.
A multi-phase detergent tablet for use in a washing machine, the tablet comprising a first phase in adhesive contact with one or more second phases, at least one second phase being in the form of a compressed particulate solid incorporating liquid adhesive comprising polyethylene glycol having an average molecular weight in the range from about 200 to about 700 and wherein the liquid adhesive is incorporated by post-addition, to the particulate solid prior to compression wherein the first phase is compressed at a pressure greater than that of the second phase.
Dependencies are inferred from the claim text.