Polymer-Enhanced Liquid Laundry Compositions for Fatty Soil Removal
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Solution Overview
Problem
Liquid laundry detergents face challenges in removing fatty soils and maintaining storage stability, particularly when containing hygroscopic ingredients like enzymes, as builders often fail to work well with lipases.
Innovation Solution
Incorporating a polymer with a core structure bearing specific moieties and polyalkylene oxide chains, along with enzymes such as lipases and proteases, to enhance cleaning performance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If liquid detergent compositions contain hygroscopic ingredients like enzymes, then cleaning effectiveness is improved, but storage stability deteriorates
Solution Approach 1:
The patent introduces a polymer as an intermediary substance that mediates between the hygroscopic enzymes and the surrounding environment. This polymer forms a protective matrix that absorbs excess moisture and prevents direct contact between water and enzymes, thereby maintaining enzyme activity while improving storage stability.
Solution Approach 2:
The invention creates a composite detergent system combining multiple components: surfactants, enzymes, builders, and the specific polymer. This composite formulation leverages the complementary properties of each ingredient, where the polymer provides structural stability and moisture control while enzymes deliver cleaning functionality.
2Stability of the object's composition
If builders are used in liquid laundry detergents, then storage stability is improved, but compatibility with lipases deteriorates
Solution Approach 1:
The patent applies local quality by creating distinct functional zones within the detergent formulation. The polymer forms a protective microenvironment around lipases, providing a localized stable structure that is compatible with enzyme activity, while other builders maintain overall formulation stability without interfering with lipase function.
Solution Approach 2:
The invention modifies key parameters of the detergent system, particularly the molecular structure and concentration of the polymer, to optimize both storage stability and lipase compatibility. By adjusting polymer molecular weight, composition ratios, and environmental conditions, the formulation achieves synergistic compatibility between builders and lipases.
Data Source
AI summary
The present invention is directed towards compositions comprising (A) at least one polymer comprising (a) a core that bears one to 3 moieties of the general formula (I), wherein Z are different or the same and selected from C5-C20-alkylene wherein in said C5-C20-alkylene at least one C-atom is replaced by an N-atom that bears a polyalkylene chain and wherein the C-atoms in said C5-C20-alkylene may be non-substituted or substituted with one or more O-C1-C4-alkyl groups, A1 are different or the same and selected from C1-C12-alkylene, C6-arylene, and C3- C12-cycloalkylene wherein C1-C12-alkylene and C3-C12-cycloalkylene may be non-sub- stituted or substituted with one or more O-C1-C4-alkyl groups or OH groups and wherein C3-C12-cycloalkylene may bear one to three methyl groups, or based on citric acid, X1 is selected from hydrogen and methyl and ethyl and combinations of at least two of the foregoing, n is in the range of from 1 to 100, (c) polyalkylene oxide chains.