Dispersible alcohol/cleaning wipes via topical or wet-end application of acrylamide or vinylamide/amine polymers

a technology of amine polymer and wipe, which is applied in the direction of weaving, synthetic resin layered products, chemistry apparatus and processes, etc., can solve the problems of inability to create an economical coherent fibrous web, inability to disperse binders in water containing more than about 15 ppm casup>2+/sup> and/or mgsup>2, and achieve the desired strength of the fibrous substrate. , the effect of enhancing th

Inactive Publication Date: 2006-01-05
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The present invention is directed to triggerable binder formulations of acrylamide and vinylamide/amine polymers and polymer formulations, which have been developed to address the above-described problems. As used herein, the term “polymer” is understood to include polymers, copolymers, terpolymers, and higher order polymers. The triggerable binder formulations of the present invention may provide strength in the dry state, but more importantly, may help maintain a desired level of strength of the fibrous substrate in the wet state by solvent triggerability. A controlled concentration of an insolubilizing agent, such as a lower level alcohol, glycol, ketone, or mixtures thereof, in the wetting composition insolubilizes the triggerable binder formulation and allows it to function as an adhesive for the fibers to form or fu...

Problems solved by technology

For many years, the problem of disposability has plagued industries that provide disposable products such as diapers, wet wipes, adult incontinent garments and feminine care products.
While much headway has been made in addressing this problem, one of the weak links has been the inability to create an economical coherent fibrous web which will readily dissolve or disintegrate in water but still have sufficient in-use tensile strength.
However, because of the presence of a small amount of sodium acrylate in the partially neutralized terpolymer, such binders fail to disperse in water containing more than about 15 ppm Ca2+ and/or Mg2+.
When placed in water containing more than about 15 ppm...

Method used

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  • Dispersible alcohol/cleaning wipes via topical or wet-end application of acrylamide or vinylamide/amine polymers
  • Dispersible alcohol/cleaning wipes via topical or wet-end application of acrylamide or vinylamide/amine polymers
  • Dispersible alcohol/cleaning wipes via topical or wet-end application of acrylamide or vinylamide/amine polymers

Examples

Experimental program
Comparison scheme
Effect test

example 1

Wetting Composition Preparation

[0100] ACS reagent grade or better of isopropanol (IPA), acetone(ACE), t-butyl alcohol (TBA), n-butyl alcohol (NBA), n-propanol (NPA), ethanol (EtOH) or methanol (MeOH) were used in formulating the wetting solutions used in the following examples. The concentrations of these insolubilizing agents in the wetting compositions ranged between 60% and 100% (neat). Where the concentration of the insolubilizing agents in the wetting compositions was below 100%, insolubilizing agent was combined with deionized water.

Fibrous Substrate Sample Preparation

[0101] Two different fibrous substrates were used to evaluate the performance of the triggerable binder formulation: UCTAD tissue and thermally-bonded air-laid nonwoven.

UCTAD Tissue

[0102] An uncreped through-air dried(UCTAD) tissue fibrous substrate with a basis weight of about 50 gsm and a caliper of about 1.3 mm was used to evaluate samples of the triggerable binder formulations. Eucalyptus wood pulp fi...

example 2

[0111] An anionic polyacrylamide polymer, commercially available under the trade designation of Baystrength® 85 from Bayer Corporation, was evaluated as a triggerable binder formulation on the UCTAD and TBAL fibrous substrate samples as described above. The Baystrength® 85 polymer was applied to the fibrous substrate samples as described above. The triggerable binder formulation add-on level for each fibrous substrate sample ranged from 1.8 wt % to 10 wt %. The treated fibrous substrate samples were allowed to equilibrate for in-use tensile strength measurements, as described above, in wetting compositions having an IPA content that ranged from 65% to 100%. Dry treated fibrous substrate samples were also tested for in-use tensile strength. The in-use tensile strength of the treated fibrous substrate samples, wet and dry, is presented in Table 3. The dispersibility or disposal strength of the treated fibrous substrate samples for 10 minute and 30 minute soaks in 200 ppm hard water ar...

example 3

[0113] An UCTAD fibrous substrate sample having a basis weight of about 45 gsm and a caliper of about 1.3 mm commercially available from Kimberly-Clark Corporation, was used for evaluation of the Baystrength® 85 polymer as a triggerable binder formulation. This UCTAD fibrous substrate sample possesses a residual wet strength of about 40 gsm in water. The results presented in Table 4 were not corrected for residual wet strength of the UCTAD fibrous substrate samples in this example. The Baystrength® 85 polymer was applied to the fibrous substrate samples as described above. The triggerable binder formulation add-on level for each fibrous substrate sample ranged from 2 wt % to 5 wt %. The in-use tensile strength and disposal strength for the treated fibrous substrate samples were evaluated as described in Example 1, with the exception that 100 ppm hard water (as metal ion) was utilized for soak tests. The treated fibrous substrate samples were allowed to equilibrate for in-use tensile...

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Abstract

The present invention is directed to a wet wipe product. The wet wipe product comprises a fibrous substrate and a triggerable binder formulation. The triggerable binder formulation is capable of binding the fibers in the fibrous substrate. The triggerable binder formulation may include acrylamide polymers, vinylamide/amine polymers, and mixtures. The triggerable binder formulation is insoluble in a wetting composition comprising an insolubilizing agent but is dispersible in disposal water.

Description

BACKGROUND OF THE INVENTION [0001] For many years, the problem of disposability has plagued industries that provide disposable products such as diapers, wet wipes, adult incontinent garments and feminine care products. While much headway has been made in addressing this problem, one of the weak links has been the inability to create an economical coherent fibrous web which will readily dissolve or disintegrate in water but still have sufficient in-use tensile strength. [0002] Binder compositions have been developed which can be more dispersible and are more environmentally responsible than past binder compositions. One class of binder compositions includes polymeric materials having inverse solubility in water. These binder compositions are insoluble in warm water, but are soluble in cold water, such as found in a toilet. It is well known that a number of polymers exhibit cloud points or inverse solubility properties in aqueous media. These polymers include: (1) evaporation retarder...

Claims

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Application Information

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IPC IPC(8): B32B27/04D04H1/64
CPCA61K8/0208A61K8/39D04H1/641A61K8/817A61Q19/10A61K8/8158D04H1/587D04H1/64Y10T442/20Y10T442/2311Y10T442/2352Y10T442/2738Y10T442/60Y10T442/699B32B27/04
Inventor LOSTOCCO, MICHAEL RALPHBRANHAM, KELLY DEANMITCHELL, JOSEPHTANZER, RICHARD WARREN
Owner KIMBERLY-CLARK WORLDWIDE INC
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