Friable foam textile cleaning stick
First Claim
1. A textile cleaning stick having a tensile strength of less than about 1. lb comprising a friable open celled reticulated hydrophillic polyurethane foam matrix, wherein said matrix integrally incorporating (a) abrasive particles silane-coupled within said matrix and (b) an aqueous phase incorporating an effective amount of an organic solvent dispersed therein, so that said foam matrix yields oil and water absorbent shreds when it is rubbed across a textile surface.
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Accused Products
Abstract
A dry-type textile cleaning article is disclosed which comprises a friable hydrophilic polyurethane foam body which incorporates abrasive particles, solvents, surfactants, and adjuvants such as fragrance, biocides, and fiber emollients. When rubbed over a textile surface the foam body yields shreds which are effective to remove both liquid and dry soils from textiles.
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Citations
21 Claims
- 1. A textile cleaning stick having a tensile strength of less than about 1. lb comprising a friable open celled reticulated hydrophillic polyurethane foam matrix, wherein said matrix integrally incorporating (a) abrasive particles silane-coupled within said matrix and (b) an aqueous phase incorporating an effective amount of an organic solvent dispersed therein, so that said foam matrix yields oil and water absorbent shreds when it is rubbed across a textile surface.
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8. An oil and water absorbent textile cleaning stick having a tensile strength of less than about 2.0 lbs prepared by a process comprising:
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(a) forming an aqueous reactant phase comprising about 40-70% by weight of abrasive solid particles, about 0.1-5% of the weight of the solid particles of a silane-coupling agent, about 0.1-10% of a nonionic surfactant, about 1-20% of an organic solvent and about 15-40% water; (b) mixing said aqueous reactant phase with a water-foamable prepolymer resin which contains at least 2 free isocyanate groups per resin molecule so that the final mole ratio of water to total free isocyanate groups is within the range of about 5-200;
1, thereby converting said resin into a friable, open-celled, reticulated polyurethane foam body. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A textile cleaning stick having a tensile strength of less than about 1. lb prepared by a process comprising:
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(a) forming an aqueous reactant phase comprising about 20-30% by weight of water, about 0.5-5.0% of a nonionic surfactant, about 1-10% by weight of a polydimethylsiloxane silicone fluid, about 5-15% of an organic solvent, about 45-60% of abrasive mineral particles, about 0.1-5% by weight of the mineral particles of a silane-coupling agent and about 0.5-2% of an inorganic suspending agent; (b) mixing said aqueous reactant phase with a water-foamable prepolymer resin in a weight ratio of aqueous phase to prepolymer of about 7.5-15;
1, said prepolymer resin comprising a toluene diisocyanate-capped polyalkylenoxy ether comprising about 1.3-2.5 mEq/g of isocyanate groups, so as to convert such resin into a hydrophilic, open-celled reticulated, friable polyurethane foam body. - View Dependent Claims (17, 18, 19, 20)
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Specification