Patent US3195332A successfully refreshed from Google Patents.
Patent EP0049944A1 successfully refreshed from Google Patents.
EP0049944A1
Expired / Lapsed
EP
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Absorbent products, process and compositions for immobilization of particulate absorbents
Assignee: Johnson and Johnson
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Filing: 1981-08-24
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Granted: —
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Expires: 2001-08-24
Abstract
Abstract 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.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 09:05
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F; A61F13/00; A61F13/15; A61F13/53; A61L15/20; A61L15/425; A61F2013/15008; A61F2013/15048; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530481; A61F2013/530489; A61F2013/530496; A61F2013/530802
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
43 words
An absorbent-immobilizing composition comprising: (a) at least about 25 to no greater than about 125 parts of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, and (b) 100 parts by weight of a liquid polyhydroxy organic compound.
Claim 2
Dependent Claim
43 words
An absorbent-immobilizing composition comprising: (a) at least about 25 to no greater than about 125 parts of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, and (b) 100 parts by weight of a liquid polyhydroxy organic compound.
Claim 3
Dependent Claim
25 words
A composition according to Claim 1 in which the particulate absorbent polymer is employed in an amount of from about 40 to about 80 parts.
Claim 4
Dependent Claim
57 words
An absorbent immobilizing foam forming composition comprising: (a) at least about 25 to no greater than about 125 parts of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least ten, (b) 100 parts by weight of the liquid polyhydroxy organic compound, and (c) 2 to 30 parts by weight of a blowing agent.
Claim 5
Dependent Claim
57 words
An absorbent immobilizing foam forming composition comprising: (a) at least about 25 to no greater than about 125 parts of a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least ten, (b) 100 parts by weight of the liquid polyhydroxy organic compound, and (c) 2 to 30 parts by weight of a blowing agent.
Claim 6
Dependent Claim
91 words
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 in 100 parts of liquid polyhydroxy organic compound, and thereafter subjecting the coated or cast liquid to conditions for solidification by allowing to stand at a temperature up to about 175°F from about 30 minutes to 24 hours or heating at temperatures of 175°F to 450°F for from a few seconds up to about 15 minutes.
Claim 7
Dependent Claim
91 words
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 in 100 parts of liquid polyhydroxy organic compound, and thereafter subjecting the coated or cast liquid to conditions for solidification by allowing to stand at a temperature up to about 175°F from about 30 minutes to 24 hours or heating at temperatures of 175°F to 450°F for from a few seconds up to about 15 minutes.
Claim 8
Dependent Claim
32 words
An absorbent product according to Claim 4 which is a foam sheet and which has been prepared by including 2 to 30 parts of blowing agent to the composition of Claim 4.
Claim 9
Dependent Claim
37 words
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 blowing agent, and a liquid polyhydroxy organic compound and allowing the mixture to foam.
Claim 10
Dependent Claim
37 words
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 blowing agent, and a liquid polyhydroxy organic compound and allowing the mixture to foam.
Claim 11
Dependent Claim
16 words
A product according to Claim 6 wherein the particulate water-insoluble, water-swellable absorbent polymer is starch polyacrylate.
Claim 12
Dependent Claim
17 words
A product according to Claim 6 wherein the solid particulate water-insoluble, water-swellable absorbent polymer is cellulose polyacrylate.
Claim 13
Dependent Claim
16 words
A product according to Claim 6 wherein the solid, particulate water-insoluble, water-swellable absorbent polymer is polyacrylate.
Claim 14
Dependent Claim
16 words
any one of to 9 10. A product according to/Claims6/wherein the liquid polyhydroxy compound is glycerol.
Claim 15
Dependent Claim
18 words
any one of to 9 11. A product according to/Claim 6/wherein the liquid polyhydroxy compound is ethylene glycol.
Claim 16
Dependent Claim
50 words
. any one of to 11 12. A product according to/Claims6/wherein from about 4 0 to 80 parts by weight/the particulate, water-insoluble, water-swellable polymer and from about 2 to 30 parts by weight of the blowing agent are employed for every 100 parts by weight of liquid polyhydroxy organic compound.
Claim 17
Dependent Claim
22 words
A product according to Claim 6 wherein the water-insoluble water-swellable polymer is polyacrylate and the liquid polyhydroxy organic compound is ethylene glycol.
Claim 18
Dependent Claim
21 words
A product according to Claim 6 wherein the water-insoluble water-swellable polymer is polyacrylate and the liquid polyhydroxy organic compound is glycerol.
Claim 19
Dependent Claim
29 words
any one of to 14 15. A product according/to Claims6/wherein the mixture is allowed to foam by standing at ambient temperature for from about 1 to about 24 hours.
Claim 20
Dependent Claim
40 words
any one of to 14 16. A product according/to Claims6/wherein the mixture is allowed to foam by subjecting the mixture to a temperature in the range of about 175°F to 450°F for from a few seconds to a few minutes.
Claim 21
Dependent Claim
59 words
An absorbent article comprising a foam coated substrate, said foam coated substrate obtained by (a) mixing together a solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a blowing agent, and a liquid polyhydroxy organic compound to obtain a foamable composition, (b) coating said composition onto a substrate, and (c) allowing the mixture to foam.
Claim 22
Dependent Claim
59 words
An absorbent article comprising a foam coated substrate, said foam coated substrate obtained by (a) mixing together a solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a blowing agent, and a liquid polyhydroxy organic compound to obtain a foamable composition, (b) coating said composition onto a substrate, and (c) allowing the mixture to foam.
Claim 23
Dependent Claim
37 words
An article according to Claim 17 in which the foaming is carried out by subjecting the mixture to a temperature in the range of about 175°F to 450°F for from a few seconds to a few minutes.
Claim 24
Dependent Claim
18 words
or Claim 18 19. An article according to Claim 17 /in which the substrate is a polyethylene film.
Claim 25
Dependent Claim
18 words
or Claim 18 20. An article according to Claim 17/in which the substrate is a non-woven cellulosic fabric.
Claim 26
Dependent Claim
20 words
or Claim 18 21. An article according to Claim 17/in which the substrate is a layer of wood pulp material.
Claim 27
Dependent Claim
66 words
.22. A dual walled container for transporting aqueous fluids having a breakable inner wall and a non-breakable outer wall and having in a portion of the space between the two containers walls, a foam prepared by mixing together solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a blowing agent, and a liquid polyhydroxy organic compound and allowing the mixture to foam.
Claim 28
Dependent Claim
66 words
.22. A dual walled container for transporting aqueous fluids having a breakable inner wall and a non-breakable outer wall and having in a portion of the space between the two containers walls, a foam prepared by mixing together solid, particulate, water-insoluble, water-swellable polymer having a gel capacity of at least 10, a blowing agent, and a liquid polyhydroxy organic compound and allowing the mixture to foam.
Claim 29
Dependent Claim
69 words
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 particulate absorbent and a liquid polyhydroxy organic compound onto a substrate or casting surface as a liquid layer to form a liquid film and thereafter subjecting the liquid film to solidifying conditions for time sufficient to transform the liquid film to an absorbent-bearing solidified structure.
Claim 30
Dependent Claim
69 words
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 particulate absorbent and a liquid polyhydroxy organic compound onto a substrate or casting surface as a liquid layer to form a liquid film and thereafter subjecting the liquid film to solidifying conditions for time sufficient to transform the liquid film to an absorbent-bearing solidified structure.
Claim 31
Dependent Claim
30 words
A process according to Claim 23 in which the liquid film is heated at temperatures in the range of from 175° to 450°F for from about 1 to 60 seconds.
Claim 32
Dependent Claim
27 words
A process according to Claim 23 in which the liquid film is allowed to stand at ambient temperature for from about 60 minutes to about 24 hours.
Claim 33
Dependent Claim
18 words
any one of to 25 26. A process according to/Claims23/in which the liquid polyhydroxy organic compound is glycerol.
Claim 34
Dependent Claim
19 words
any one of to 25 27. A process according to/Claims23/in which the liquid polyhydroxy organic compound is ethylene glycol.
Claim 35
Dependent Claim
54 words
An absorbent film formed by coating or casting a liquid absorbent-immobilizing composition comprising from about 25 to 125 parts of solid absorbent in 100 parts of liquid polyhydroxy organic compound and thereafter heating the resulting liquid film at temperatures of from about 175° to 450°F for from seconds few seconds to about 15 minutes.
Claim 36
Dependent Claim
54 words
An absorbent film formed by coating or casting a liquid absorbent-immobilizing composition comprising from about 25 to 125 parts of solid absorbent in 100 parts of liquid polyhydroxy organic compound and thereafter heating the resulting liquid film at temperatures of from about 175° to 450°F for from seconds few seconds to about 15 minutes.
Claim 37
Dependent Claim
23 words
A reaction product of particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10 and a liquid polyhydroxy organic compound.
Claim 38
Dependent Claim
23 words
A reaction product of particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10 and a liquid polyhydroxy organic compound.
Claim 39
Dependent Claim
102 words
A process for producing an absorbent foam product comprising: (1) feeding into an extruder the components of the absorbent foam product comprising a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, a liquid polyhydroxy organic compound, and a blowinq agent; (2) passing the components through the extruder barrel at ambient temperature to intimately mix the components; (3) forcing the resulting mixture into a die maintained at temperatures in the range of about 300° to 400°F to cause foam formation; (4) expelling the foam product throuqh the orifice of the heated die onto a temporary or permanent substrate.
Claim 40
Dependent Claim
102 words
A process for producing an absorbent foam product comprising: (1) feeding into an extruder the components of the absorbent foam product comprising a particulate water-insoluble, water-swellable absorbent polymer having a gel capacity of at least 10, a liquid polyhydroxy organic compound, and a blowinq agent; (2) passing the components through the extruder barrel at ambient temperature to intimately mix the components; (3) forcing the resulting mixture into a die maintained at temperatures in the range of about 300° to 400°F to cause foam formation; (4) expelling the foam product throuqh the orifice of the heated die onto a temporary or permanent substrate.
Claim 41
Dependent Claim
29 words
A process according to Claim 30 in which the particulate absorbent is an acrylate polymer or acrylate modified polysaccharide and the polyhydroxy organic compound is glycerol or ethylene glycol.
Claim 42
Dependent Claim
27 words
or Claim 31 32. A process according to Claim 30/in which the foam product is expelled onto a permanent substrate to produce a foam coated absorbent article.
Claim 43
Dependent Claim
28 words
or Claim 31 33. A process according to Claim 30/in which the foam product is expelled onto a temporary substrate to produce a self-supporting foam sheet or strip.
References Cited (Backward Citations)
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