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US 8,828,271 B2Granted
Hot melt wetness indicator adhesive composition containing UV fluorescent agent
AssigneeBostik SA
InventorChongyao Zhang
Life of this patent
Estimating the term…
Abstract
A wetness indicating adhesive composition comprising an adhesive base composition incorporating a fluorescing agent in the adhesive base composition that only fluoresces when wet, and not when dry. In one embodiment, the adhesive base composition may be composed of water soluble, or at least partially water soluble, components, and in another embodiment the adhesive base composition may be composed of water sensitive components as for example one or more water insoluble polymers and a surfactant. The fluorescing agent can either be dissolved or dispersed in the adhesive base composition, and is preferably a water soluble fluorescing agent that becomes visible under ultraviolet light only when an article such as a disposable diaper becomes wet.
Claims31
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a wetness indicating agent or a blend of wetness indicating agents in an amount of about 0 to 5% by weight;
- and
- h. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to infrared light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight, said polymer or blend of polymers is water soluble;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight, said fluorescing agent or blend of fluorescing agents is water soluble;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight, said polymer or blend of polymers is water soluble;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight, wherein said polymer is selected from the group consisting of ethylene-vinyl-acetate (EVA), styrene-isoprene-styrene (SIS) block copolymer, styrene-butadiene-styrene (SBS) block copolymer, styrene-ethylene-butylene-styrene (SEBS) block copolymer, styrene-ethylene/ethylene- propylene-styrene (SEEPS) block copolymer, high density polyethylene, low density polyethylene, chemically modified polyethylene, sulfonated polyesters, polyvinylpyrrolidone/vinyl acetate copolymer, amorphous polyalphaolefins, ethylene/styrene interpolymers (ESI), metallocene catalyzed APAOs, polyvinyl methyl ether, and polyethylene glycol polymers;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight, said fluorescing agent is 8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight;
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight, said fluorescing agent or blend of fluorescing agents is water soluble, and wherein said fluorescing agent is fluorescein;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
A hot melt wetness indicating adhesive composition comprising a blend of the following ingredients:
- a. a polymer or a blend of polymers in an amount of about 10% to 80% by weight, wherein said polymer is selected from the group consisting of ethylene-vinyl-acetate (EVA), styrene-isoprene-styrene (SIS) block copolymer, styrene-butadiene-styrene (SBS) block copolymer, styrene-ethylene-butylene-styrene (SEBS) block copolymer, styrene-ethylene/ethylene- propylene-styrene (SEEPS) block copolymer, high density polyethylene, low density polyethylene, chemically modified polyethylene, sulfonated polyesters, polyvinylpyrrolidone/vinyl acetate copolymer, amorphous polyalphaolefins, ethylene/styrene interpolymers (ESI), metallocene catalyzed APAOs, polyvinyl methyl ether, and polyethylene glycol polymers.
- b. a tackifier or a blend of tackifiers in an amount of about 20% to 70% by weight;
- c. a surfactant or a blend of surfactants in an amount of about 0% to 30% by weight;
- d. a plasticizer or a blend of plasticizers in an amount of about 0 to 50% by weight;
- e. a wax or a blend of waxes in an amount of about 0% to 50% by weight;
- f. about 0 to 5% by weight of a stabilizer or antioxidant;
- g. a fluorescing agent or a blend of fluorescing agents that fluoresce when exposed to ultraviolet light, and only when wet and not when dry, in an amount of 0.001% to 10% by weight, said fluorescing agent or blend of fluorescing agents is water soluble;
- and
- h. a wetness indicating agent or blend of wetness indicating agents in an amount of about 0.01% to 5% by weight,
- wherein the ingredients add up to 100% by weight of the composition.
7 more elements
Dependencies are inferred from the claim text.