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US 4,410,571 AGranted
Absorbent products, process and compositions for immobilization of particulate absorbents
AssigneeJohnson & Johnson
InventorRalf Korpman
Life of this patent
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AssigneeJohnson & Johnson
InventorRalf Korpman
Estimating the term…
Particulate absorbents of a water-insoluble water-swellable polymer having a gel capacity of at least 10 are immobilized with a composition comprising the absorbent in a liquid polyhydroxy organic compound. The composition may be employed by applying to an appropriate surface and subjecting the liquid film to solidifying conditions. The solidified film product has high absorptive capacity and is free of undesirable movement when positioned in absorbent articles. A foam product having both absorptive and cushioning properties is prepared from a solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a solid, particulate blowing agent, and a liquid polyhydroxy organic compound. Foamable compositions and articles employing the foam are also described.
An absorbent-immobilizing composition in liquid form comprising:
An absorbent immobilizing foam forming composition comprising:
An absorbent film or sheet product prepared by coating or casting an absorbent-immobilizing composition comprising from about 25 to 125 parts of particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, said absorbent polymer being other than a hydrolyzed starch/polyacrylonitrile graft copolymer, in 100 parts of liquid polyhydroxy organic compound having vicinal hydroxy groups, and thereafter subjecting the coated or cast liquid to conditions for solidification by allowing to stand at a temperature up to about 175.degree. F. from about 30 minutes to 24 hours or heating at temperatures of 175.degree. F. to 450.degree. F. for from a few seconds up to about 15 minutes.
An absorbent foam product prepared by mixing together a solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a non-solid blowing agent, and a liquid polyhydroxy organic compound having vicinal hydroxy groups and allowing the mixture to foam.
A process for decreasing the mobility of particulate absorbent in absorbent articles and improving moisture transport therein which comprises applying an absorbent-immobilizing composition comprising
An absorbent film formed by coating or casting a liquid absorbent-immobilizing composition comprising from about 25 to 125 parts of a solid particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, said absorbent polymer being other than a hydrolyzed starch/polyacrylonitrile graft copolymer in 100 parts of liquid polyhydroxy organic compound having vicinal hydroxy groups and thereafter heating the resulting liquid film at temperatures of from about 175.degree. to 450.degree. F. for from seconds few seconds to about 15 minutes.
An immobilized absorbent-bearing product of particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, said absorbent polymer being other than a hydrolyzed starch/polyacrylonitrile graft copolymer, and a liquid polyhydroxy organic compound having vicinal hydroxy groups.
An absorbent-immobilizing composition in liquid form comprising:
An absorbent-immobilizing composition in liquid form comprising:
An absorbent-immobilizing composition in liquid form comprising:
Dependencies are inferred from the claim text.