Porous polymeric material containing a reinforcing and heat-sealable material
AssigneeLever Brothers Company
InventorZia Haq
Life of this patent
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Abstract
A highly porous polymeric material which may be dry or contain an included liquid, for example, a cleaning composition, is reinforced and rendered heat-sealable by the incorporation of thermoplastic fibrous, particulate or foraminous material. The polymeric material is preferably a styrene homo- or copolymer prepared by polymerization of a high-internal-phase emulsion. Sheets of the porous polymer may be sandwiched between two liquid-permeable substrate layers to form a wiping cloth or the like.
Claims24
A pressure-sensitive porous polymeric material capable of retaining at least 5 times its own weight, defined in terms of water, of liquid and of releasing at least some of that water on the application thereto of hand pressure, the porous polymeric material being dry or containing an aqueous or non-aqueous liquid, and the porous polymeric material having incorporated therein a reinforcing and heat-sealable material in fibrous, particulate or foraminous form.
Dependencies are inferred from the claim text.