Bacterial Lipase in Polyester Soil Release Detergents
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Solution Overview
Problem
The inclusion of lipase enzymes in detergent formulations causes degradation of soil release polymers, making it impossible to combine both in laundry detergents, particularly in liquid formulations.
Innovation Solution
Incorporating non-fungal lipase enzymes, such as bacterial lipases derived from Burkholderia cepacia, Pseudomonas fluorescence, or Psychromonas ingrahamii, at specific concentrations with polyester-based soil release polymers in detergent compositions, allowing for effective cleaning without degrading the soil release polymer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lipase enzymes are included in detergent formulations, then cleaning performance is improved, but soil release polymer degrades
Solution Approach 1:
The patent changes the source parameter of the lipase enzyme from fungal to non-fungal (bacterial) origin. This parameter change resolves the contradiction because non-fungal lipases do not degrade the soil release polymer while still providing effective cleaning performance, thus maintaining both productivity and composition stability.
2Productivity
If fungal lipase enzymes are used, then lipolytic cleaning is achieved, but polyester soil release polymer is degraded
Solution Approach 1:
The patent converts the harmful effect of lipase enzymes (which typically degrade polymers) into a beneficial outcome by selecting non-fungal lipases that specifically do not degrade polyester soil release polymers. This allows the lipolytic cleaning function to be maintained while eliminating the harmful degradation effect on the polymer.
3Productivity
If soil release polymer and lipase are combined, then cleaning effectiveness is enhanced, but formulation stability is compromised
Solution Approach 1:
The patent changes the biological origin parameter of the lipase from fungal to bacterial (non-fungal). This parameter modification enables the simultaneous inclusion of both soil release polymer and lipase in the formulation without compromising stability, while maintaining enhanced cleaning effectiveness.
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
This combination enables effective lipolytic cleaning while maintaining the integrity of the soil release polymer, enhancing the cleaning performance of laundry detergents without the negative effects of fungal lipases.
Implementation Method 1
the non-fungal lipase enzyme is a bacterial lipase enzyme derived from Burkholderia cepacia, Pseudomonas fluorescence or Psychromonas ingrahamii
Implementation Method 2
provide lipolytic cleaning without degradation of said polyester soil release polymer
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention provides a detergent composition comprising: (i) from 0.1 to 10 wt.% of a soil release polymer; and (ii) from 0.0005 to 2.5 wt.% of a bacterial lipase enzyme, wherein the soil release polymer is a polyester based soil released polymer; and a method of treatment of a substrate with said composition as the use of a non-fungal lipase enzyme to provide lipolytic cleaning without degradation of said polyester soil release polymer.