Granular Detergent Surfactant Distribution via Pre-Emulsified Graft Copolymer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Granular laundry detergent compositions with post-added surfactants often form large granules due to uneven surfactant distribution, leading to slow dissolution and poor cleaning performance, which is undesirable for consumers.
Innovation Solution
A process involving forming an aqueous detergent slurry, spray drying it to create particles, and then adding an emulsion comprising a surfactant and an amphiphilic graft copolymer, specifically a graft copolymer of polyethylene, polypropylene, or polybutylene oxide with vinyl acetate, to the particles to ensure even distribution and prevent large granule formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surfactant is post-added by spraying onto detergent granules, then cleaning performance is improved, but large granules form due to uneven surfactant distribution
Solution Approach 1:
The surfactant is pre-emulsified with the polymer before being applied to the detergent granules. This preliminary emulsification action ensures uniform distribution of the surfactant throughout the application process, preventing the formation of large droplets that would cause granule agglomeration while still achieving the desired cleaning performance enhancement.
2Manufacturing precision
If surfactant is incorporated during spray-drying, then granule size uniformity is maintained, but processing complexity increases
Solution Approach 1:
The process is divided into separate stages: first, the detergent granules are manufactured by spray-drying; second, the surfactant is pre-emulsified with the polymer; third, the emulsion is sprayed onto the completed granules. This segmentation allows each stage to be optimized independently, maintaining granule size uniformity while simplifying the overall processing complexity compared to incorporating surfactant during the spray-drying process.
3Manufacturing precision
If emulsion with polymer is used for surfactant application, then surfactant distribution is improved, but formulation complexity increases
Solution Approach 1:
The polymer acts as an intermediary substance that facilitates uniform surfactant distribution. By forming an emulsion of surfactant in the presence of the polymer, the polymer mediates the interaction between surfactant and granule surface, ensuring even distribution without requiring complex application equipment or multi-component formulations.
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 method results in a granular detergent composition with improved surfactant distribution, reducing the formation of large granules and enhancing cleaning performance and consumer acceptance by ensuring smaller granule size and better dissolution.
Implementation Method 1
spray drying said aqueous detergent slurry to form a plurality of spray-dried detergent particles
Implementation Method 2
forming an emulsion comprising a surfactant wherein the emulsion comprises a polymer
Data Source
AI summary
A process of making a granular detergent composition comprising the steps of: a) forming an aqueous detergent slurry; b) spray drying said aqueous detergent slurry to form a plurality of spray-dried detergent particles; c) forming an emulsion comprising a surfactant; and d) adding the emulsion from step c) to at least a portion of said plurality of spray-dried detergent particles.