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US 4,234,627 AGranted
Fabric conditioning compositions
AssigneeThe Procter & Gamble Company
InventorKenneth J. Schilling
Life of this patent
Estimating the term…
Abstract
Fabric conditioning compositions suitable for effectively imparting fabric conditioning agents to fabrics during the home laundering operation via friable microcapsules containing such agents. A method for delivery of the agents is also provided.
Claims13
A granular laundry presoaking/washing composition comprising:
- (A) from about 3% to 20% by weight of a granular fabric treatment mixture, the granules within said mixture comprising
- (i) water-insoluble, friable microcapsules varying in size from about 5 to 500 microns, each microcapsule consisting essentially of
- (a) a liquid core containing fabric conditioning agent;
- and
- (b) a solid thin polymeric shell completely surrounding said core;
- said shell having an average thickness ranging between about 0.1 and 50 microns;
- and
- (ii) a substantially water-insoluble, fabric substantive capsule transfer agent having a melting point between about 40.degree. C. and 150.degree. C.;
- said capsule transfer agent surrounding each microcapsule;
- the weight ratio of microcapsules to capsule transfer agent within each granule of the fabric treatment mixture between about 0.002:1 and 2000:1;
- and
- (B) from about 5% to 90% by weight of a presoaking/washing adjuvant selected from the group consisting of water-soluble detersive surfactants, detergency builders and mixtures of water-soluble detersive surfactants and detergency builders.
9 more elements
A process for conditioning fabrics comprising the steps of:
- (A) contacting said fabrics in an aqueous bath with an effective amount of a composition comprising:
- 1. from about 3% to 20% by weight of a granular fabric treatment mixture, the granules within said mixture comprising
- (i) water-insoluble;
- friable microcapsules varying in size from about 5 to 500 microns, each microcapsule consisting essentially of
- (a) a liquid core containing fabric conditioning agent;
- and
- (b) a solid thin polymeric shell completely surrounding said core;
- said shell having an average thickness ranging between about 0.1 and 50 microns;
- and
- (ii) a substantially water-insoluble, fabric substantive capsule transfer agent having a melting point between about 40.degree. C. and 150.degree. C.;
- said capsule transfer agent surrounding each microcapsule;
- the weight ratio of microcapsules to capsule transfer agent within each granule of the fabric treatment mixture ranging between about 0.002:1 and 2000:1;
- and
- 2. from about 5% to 90% by weight of a presoaking/washing adjuvant selected from the group consisting of water-soluble detersive surfactants, detergency builders and mixtures of water-soluble detersive surfactants and detergency builders;
- and
- (B) manipulating said fabrics in an automatic clothes dryer at a temperature of from about 38.degree. C. to about 100.degree. C.
13 more elements
Dependencies are inferred from the claim text.