Absorbent hygiene product comprising superabsorbent polymer partly derived from a recycled resource and methods of producing said product
AssigneeThe Procter & Gamble Company
InventorsDimitris Ioannis Collias, Martin Ian James, Arsen Arsenov Simonyan
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Abstract
An AHP is disclosed having a topsheet, a backsheet joined with the topsheet, an absorbent core, disposed between the topsheet and the backsheet, and a poly(acrylic acid)-based superabsorbent polymer (SAP), partly derived from recycled resources. The SAP exhibits defined Saline Flow Conductivity and Absorption Against Pressure values. Methods for making the aforementioned AHP are also disclosed.
Claims27
A method for providing an absorbent hygiene product (AHP) to a consumer, said method comprising:
- a. providing a superabsorbent polymer (SAP) made by the steps of:
- i. separating a recycled SAP (rSAP) from a recycled AHP (rAHP);
- ii. degrading said rSAP to a material comprising poly(acrylic acid) (PAA);
- and
- iii. polymerizing an acrylic acid in the presence of said PAA to form said SAP exhibiting an Absorption Against Pressure (AAP) of at least about 15 g/g;
- b. combining said SAP with AHP components comprising a topsheet and a backsheet to define said AHP;
- c. disposing said AHP into a package;
- and
- d. communicating an environmental message to said consumer to convey that said AHP comprises material derived from a recycled resources;
- wherein the degrading comprises sonication.
A method for providing an AHP to a consumer, said method comprising:
- a. providing a superabsorbent polymer (SAP) made by the steps of:
- i. separating a recycled SAP (rSAP) from a recycled AHP (rAHP);
- ii. degrading said rSAP to a material comprising poly(acrylic acid) (PAA) via processing in an extensional flow device;
- and
- iii. polymerizing an acrylic acid in the presence of said PAA to form said SAP exhibiting an Absorption Against Pressure (AAP) of at least about 15 g/g and a saline flow conductivity (SFC) of at least about 30×10−7 cm3·s/g;
- b. combining said SAP with AHP components comprising a topsheet and a backsheet to define said AHP;
- c. disposing said AHP into a package;
- and
- d. communicating an environmental message to said consumer to convey that said AHP comprises material derived from a recycled resources;
- further comprising surface crosslinking of said SAP;
- wherein said acrylic acid is neutralized from about 50 mol % to about 95 mol %;
- and wherein said SAP is formed using a homogeneous solution polymerization in the presence of a di- or poly-functional monomer.
A method for providing an absorbent hygiene product (AHP) to a consumer, said method comprising:
- a. providing a superabsorbent polymer (SAP) made by the steps of:
- i. separating a recycled SAP (rSAP) from a recycled AHP (rAHP);
- ii. degrading said rSAP to a material comprising poly(acrylic acid) (PAA);
- and
- iii. polymerizing an acrylic acid in the presence of said PAA to form said SAP exhibiting an Absorption Against Pressure (AAP) of at least about 15 g/g;
- b. combining said SAP with AHP components comprising a topsheet and a backsheet to define said AHP;
- c. disposing said AHP into a package;
- and
- d. communicating an environmental message to said consumer to convey that said AHP comprises material derived from a recycled resource;
- wherein said SAP is formed using a multi-phase polymerization process.
Dependencies are inferred from the claim text.