Laundry Detergent Composition with Amylase and PEG Polymer
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Solution Overview
Problem
Laundry detergent powders face challenges in achieving optimal cleaning, freshness, and dissolution profiles, with existing formulations failing to adequately improve whiteness and stain removal.
Innovation Solution
A solid particulate laundry detergent composition comprising polyethylene glycol polymer, amylase enzyme, and specific bleach technologies such as oxaziridinium-based bleach catalyst, along with other ingredients like zeolite and phosphate builders, and lipase, which enhance cleaning, freshness, and dissolution profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laundry detergent powder formulations are used, then basic cleaning function is provided, but whiteness and stain removal profiles are insufficient
Solution Approach 1:
The patent combines amylase enzyme with specific polyethylene glycol polymers (PEG 4000, PEG 8000, or PEG 15000) in defined ratios (0.1-5% amylase with 0.5-10% polymer) to create a composite formulation that delivers both superior whiteness and consistent cleaning performance, resolving the contradiction between enhanced effectiveness and reliability
Solution Approach 2:
The patent optimizes specific parameters including amylase activity (10-50 mg/g), polymer molecular weight (4000-15000 Da), and their ratio in the formulation to achieve peak whiteness and stain removal performance while maintaining cleaning consistency across different wash conditions
2Manufacturing precision
If more ingredients are added to improve cleaning and freshness profiles, then cleaning performance improves, but formulation complexity increases
Solution Approach 1:
The amylase-enzyme-polymer combination serves multiple functions simultaneously: it provides starch stain removal (amylase activity), enhances whiteness (polymer film formation), improves dissolution (polymer solubility), and maintains freshness (enzyme stability). This multi-functionality reduces the need for separate additives, simplifying the overall formulation while achieving superior cleaning and freshness profiles
Solution Approach 2:
The patent merges the functions of starch degradation (amylase) with fabric protection and dissolution enhancement (polyethylene glycol polymer) into a single integrated system, eliminating the need for multiple separate ingredients and reducing formulation complexity while maintaining enhanced cleaning performance
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 composition significantly improves whiteness and stain removal, while also enhancing cleaning and freshness profiles, and is particularly effective in low-built formulations.
Implementation Method 1
a) amylase
Implementation Method 2
polyethylene glycol polymer
Implementation Method 3
improved dissolution profiles
Implementation Method 4
oxaziridinium-based bleach catalyst
Data Source
AI summary
The present invention relates to a solid particulate laundry detergent composition comprising: (a) polyethylene glycol polymer comprising a polyethylene glycol backbone and polyvinyl acetate side chains, wherein the average molecular weight of the polyethylene glycol backbone is in the range of from 4,000 Da to 8,000 Da, wherein the molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains is in the range of from 1:1.2 to 1:2, and wherein the average number of graft sites per ethylene oxide units is preferably in the range of from 0.2 to 0.4; (b) amylase with greater than 90% identity to the AA560 alpha amylase endogenous to Bacillus sp. DSM 12649 and comprising: (i) mutations at one or more of positions 9, 149, 182, 186, 202, 257, 295, 299, 323, 339 and 345; and (ii) mutations at four or more of positions 118, 183, 184, 195, 320 and 458; and (c) laundry detergent ingredients.