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Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article

a synthetic polymer and absorbent article technology, applied in the field of absorbent articles, can solve the problems of significant impact on the price of absorbent articles, consumers are hesitant to purchase products made from limited non-renewable resources such as petroleum and coal, and a great deal of effort has been spent in the development of materials exhibiting optimal performance characteristics

Inactive Publication Date: 2007-09-20
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]The present invention also relates to a method for making an absorbent article comprising the steps of providing a renewable resource, deriving an intermediate monomeric compound from the renewable resource, polymerizing the monomeric compo...

Problems solved by technology

In particular, a great deal of effort has been spent in the development of materials exhibiting optimal performance characteristics for use in absorbent articles.
Thus, the price and availability of the petroleum feedstock ultimately has a significant impact on the price of absorbent articles which utilize materials derived from petroleum.
In some instances, consumers are hesitant to purchase products made from limited non-renewable resources such as petroleum and coal.
Other consumers may have adverse perceptions about products derived from petrochemicals being “unnatural” or not environmentally friendly.
However, these diapers and materials tend to have significantly lower performance and / or higher cost than materials derived from petrochemicals.

Method used

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  • Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article
  • Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article
  • Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article

Examples

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Effect test

example 1

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[0189]A suitable polyolefin may be created according to the following method. An exemplary renewable resource is corn. The corn is cleaned and may be degerminated. The corn is milled to produce a fine powder (e.g., cornmeal) suitable for enzymatic treatment. The hydrolysis (e.g., liquification and saccharification) of the corn feedstock to yield fermentable sugars is well known in the agricultural and biofermentation arts. A suitable preparation pathway is disclosed in U.S. Pat. No. 4,407,955. A slurry of dry milled corn is created by adding water to the milled corn and an aqueous solution of sulfuric acid (98% acid by weight). Sufficient sulfuric acid should be added to provide a slurry pH of about 1.0 to about 2.5. The slurry is heated to about 140° C. to about 220° C. and pressurized to at least about 50 psig; however, pressures from about 100 psig to about 1,000 psig may result in greater conversion of the starch to fermentable sugars. The slurry is maintained at the aforementi...

example 2

rbent Polymer

[0194]Preparation of Glycerol

[0195]Canola oil is obtained by expressing from canola seeds. Approximately 27.5 kg of canola oil, 5.3 kg methanol and 400 g sodium methoxide are charged to a 50 L round-bottomed flask equipped with a heating mantle, thermometer, nitrogen inlet, mechanical stirrer, and reflux condenser. A glass eduction tube (dip tube) is situated so that liquid can be removed from the bottom of the flask by means of a peristaltic pump. The flask is purged with nitrogen and the mixture in the flask is heated to 65° C. with stirring. The mixture is allowed to reflux for 2.5 hours, then the heat is turned off, agitation is stopped and the mixture allowed to settle for 20 minutes. The bottom layer is pumped out of the flask and kept for further use (Fraction 1). Approximately 1.4 kg methanol and 230 g sodium methoxide are added to the flask, agitation is resumed, and the mixture refluxed at 65° C. for another 2 hours. The heat is turned off, approximately 2.8 L...

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Abstract

An absorbent article is disclosed having a topsheet, a backsheet joined with the topsheet, an absorbent core disposed between the topsheet and the backsheet, and a synthetic superabsorbent polymer derived from a first renewable resource via at least one intermediate compound, wherein said superabsorbent polymer exhibits a defined Saline Flow Conductivity value and Absorption Against Pressure value. Alternately, an absorbent article is disclosed having a synthetic polyolefin derived from a first renewable resource via at least one intermediate compound. The synthetic polyolefin exhibits defined performance characteristics making the polyolefin particularly useful in certain components of the absorbent article. Methods for making the aforementioned absorbent articles are also disclosed.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application No. 60 / 783,274, filed Mar. 17, 2006, the substance of which is incorporated herein by reference.FIELD OF INVENTION[0002]The present invention relates to an absorbent article which comprises synthetic polymeric materials derived from renewable resources, where the materials have specific performance characteristics making them particularly useful in said absorbent article.BACKGROUND OF THE INVENTION[0003]The development of absorbent articles such as disposable diapers, adult incontinence pads and briefs, and catamenial products such as sanitary napkins, is the subject of substantial commercial interest. There is a great deal of art relating to the design of absorbent articles, the processes for manufacturing such articles, and the materials used in their construction. In particular, a great deal of effort has been spent in the development of materials exhibiting optimal per...

Claims

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Application Information

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IPC IPC(8): A61F13/15
CPCA61F13/15203A61F13/84A61F13/551A61L15/40A61F13/15617A61L15/28B32B27/30B32B27/12B32B27/28A61L15/24A61L15/60C12P7/42C12P2203/00E03D1/35
Inventor HIRD, BRYNADDINGTON, ERIC TED
Owner THE PROCTER & GAMBLE COMPANY
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