Polypropylene Nonwoven Wipes That Prevent Octenidine Adsorption
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Solution Overview
Problem
Existing textile support materials, particularly those using polyethylene terephthalate (PET), fail to prevent the adsorption of bispyridiniumalkanes, such as octenidine, leading to reduced effectiveness and incompatibilities when used on animate surfaces like human skin, and require additional additives that offer no further benefits.
Innovation Solution
A textile sheetlike structure impregnated with an antimicrobial active ingredient preparation using a support material based on polypropylene nonwoven, combined with octenidine dihydrochloride, glycerol, and 1-(2-ethyl hexyl) glycerol ether, which prevents adsorption of bispyridiniumalkanes and allows for flexible formulation without unnecessary additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If support materials made of PET or other conventional textiles are used, then the structural integrity and absorbency of the wet wipe are maintained, but the active ingredient octenidine is adsorbed by the support material, reducing its effectiveness
Solution Approach 1:
The patent changes the chemical composition parameter of the support material from conventional textiles (cotton, polyester) to polyolefin-based materials. This parameter change fundamentally alters the interaction between the support material and octenidine, preventing adsorption while maintaining the mechanical and absorbent properties necessary for wet wipe functionality.
2Reliability
If additional additives are introduced to prevent adsorption of active ingredients, then adsorption is reduced, but the formulation complexity increases and compatibility issues may arise
Solution Approach 1:
The patent extracts and eliminates the need for additional adsorption-preventing additives by incorporating the preventive function directly into the support material itself through the use of polyolefin. This removes the complexity of formulating multiple components and reduces the risk of compatibility issues between additives and active ingredients.
Solution Approach 2:
The polyolefin-based support material serves multiple functions simultaneously: it provides the structural framework of the wet wipe, maintains absorbency for the active ingredient preparation, and prevents adsorption of octenidine. This multi-functionality eliminates the need for separate additives dedicated solely to preventing adsorption.
3Reliability
If the concentration of active ingredient is increased to overcome adsorption losses, then adsorption effects are compensated, but incompatibilities and skin irritation risks increase
Solution Approach 1:
The patent takes preliminary action by selecting a polyolefin-based support material that inherently prevents adsorption of octenidine before the active ingredient can be lost. This preliminary prevention measures ensures that the full efficacy of the formulated concentration is maintained without needing to overcompensate with higher doses that could cause skin irritation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of polyolefin-based support materials effectively prevents adsorption of bispyridiniumalkanes, maintaining the effectiveness of the active ingredient and avoiding incompatibilities, allowing for effective disinfection of animate surfaces without the need for additional additives.
Implementation Method 1
support materials impregnated with active ingredient preparations may result in the adsorption of active ingredients, particularly if the active ingredients are quaternary ammonium compounds. This problem of adsorption of active ingredients on carrier materials also arises with the antimicrobially effective bispyridiniumalkanes.
Data Source
AI summary
The invention relates to a textile sheetlike material impregnated with an antimicrobial active ingredient preparation. The active ingredient preparation comprises bispyridiniumalkane, in particular octenidine dihydrochloride. The support material is a polyolefin, in particular polypropylene, which prevents the adsorption of the bispyridiniumalkane on the support material of the sheetlike structure. Moreover, the invention relates to a kit of support material and active ingredient preparation for producing such sheetlike structures.