Cleansing Composition with Cationized Cellulose for Slimy Feel Elimination
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Solution Overview
Problem
Conventional skin cleansing compositions with polyoxyethylene alkyl ether sulfate persistently exhibit a slimy feel during rinsing, failing to provide a refreshing and moisturized skin feel.
Innovation Solution
A cleansing composition combining polyoxyethylene alkyl ether carboxylate with cationized hydroxypropyl cellulose, which quickly eliminates sliminess and provides a strong stop feeling, achieving excellent foam quality and moisturized skin after drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyoxyethylene alkyl ether sulfate is used as a main surfactant, then good lathering ability is achieved, but slimy feel persists during rinsing
Solution Approach 1:
The patent combines polyoxyethylene alkyl ether carboxylate (component A) with cationized hydroxypropyl cellulose (component B) to create a synergistic effect. The carboxylate surfactant maintains good lathering ability while the cationized polymer quickly eliminates slimy feel during rinsing, resolving the contradiction between lathering performance and slimy feel persistence
Solution Approach 2:
The patent specifies precise parameter ranges: polyoxyethylene alkyl ether carboxylate with average addition mole number of polyoxyethylene ≤3.5 and alkyl group carbon atoms from 10-18, and cationized hydroxypropyl cellulose with specific substitution degrees. These parameter optimizations enable the formulation to achieve both good lathering ability and rapid elimination of slimy feel
2Reliability
If polyoxyethylene alkyl ether sulfate and fatty ether carboxylate surfactant are used in combination, then mild cleansing performance and good lathering ability are achieved, but strong slimy feel persists during rinsing
Solution Approach 1:
The cationized hydroxypropyl cellulose acts as an intermediary substance that mediates between the cleansing function and the slimy feel problem. It quickly binds to and eliminates the slimy feel caused by the surfactant mixture during rinsing, allowing the formulation to maintain mild cleansing performance while preventing persistent slimy feel
Solution Approach 2:
The patent creates a composite system combining polyoxyethylene alkyl ether carboxylate with cationized hydroxypropyl cellulose. This composite material approach enables simultaneous achievement of mild cleansing performance, good lathering ability, and rapid elimination of slimy feel, overcoming the limitations of using surfactants alone
3Ease of operation
If cationic polymer is used as conditioning agent, then frictional feeling is reduced and stop feeling is improved, but slimy feel may persist
Solution Approach 1:
The patent optimizes the parameters of cationized hydroxypropyl cellulose, including substitution degree of cationized ethyleneoxy group (0.01-3) and propyleneoxy group (0.01-5), to achieve the right balance. These parameter optimizations enable the polymer to provide strong stop feeling while quickly eliminating slimy feel during rinsing
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 offers creamy foam, rapid disappearance of slimy feel during rinsing, strong stop feeling, and immediate moisturization, ensuring a refreshing and natural skin feel post-cleansing.
Implementation Method 1
a polyoxyethylene alkyl ether carboxylate in which the average addition mole number of the polyoxyethylene is 3.5 or less and the number of carbons in the alkyl group is from 10 to 18
Data Source
AI summary
A cleansing composition comprising the following components (A), (B), and (C):(A) from 1 to 20% by weight of a polyoxyethylene alkyl ether carboxylate in which the average addition mole number of the polyoxyethylene is 3.5 or less and the number of carbons in the alkyl group is from 10 to 18,(B) from 0.02 to 10% by weight of cationized hydroxypropyl cellulose represented by the following formula (1),wherein R1, R2 and R3 each independently represent a substituent group having a cationized ethyleneoxy group and a propyleneoxy group, n represents a number of from 20 to 5000 which is a number representing the average polymerization degree of anhydroglucose, and the substitution degree of the cationized ethyleneoxy group is from 0.01 to 3 and the substitution degree of the propyleneoxy group is from 0.01 to 5, and(C) water.