Cationic Polymer Latex Stability Opacity Liquid Domestic Composition
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Solution Overview
Problem
Existing liquid domestic compositions that use latex polymers to achieve opacity often lack stability, which is a problem in laundry and personal care products.
Innovation Solution
An aqueous liquid domestic composition comprising 3% to 50% softening agent, 2% to 90% anionic surfactant, and 0.1% to 30% amphoteric compound, along with a cationic polymer latex containing 0.5% to 6% cationic monomer and 30% to 99.5% aromatic monomer, which provides stability and opacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If previously known polymer latices are added to liquid domestic compositions to provide opacity, then the compositions achieve complete or partial opacity, but the resulting compositions lack stability
Solution Approach 1:
The patent changes the chemical parameters of the polymer latex by specifying a cationic charge density of 0.5% to 6% based on dry polymer weight and aromatic monomer content of 30% to 99.5%. These parameter changes resolve the contradiction by creating a polymer structure that provides both opacity and stability in liquid domestic compositions
Solution Approach 2:
The patent creates a composite polymer latex system combining cationic monomers (providing charge and stability) with aromatic monomers (providing opacity). This composite approach resolves the technical contradiction by integrating multiple functional components into a single stable polymer structure that simultaneously achieves both opacity and compositional stability
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 achieves stability and opacity in liquid domestic products, enhancing their performance in laundry and personal care applications.
Implementation Method 1
latex polymers have been added to liquid domestic compositions in order to increase the opacity
Implementation Method 2
one or more cationic polymer latex comprising (a) 0.5% to 6% by weight, based on the dry weight of said polymer, polymerized units of one or more cationic monomer
Data Source
AI summary
There is provided an aqueous liquid domestic composition comprising(i) one or more active component selected from the group consisting of(A) 3% to 50% by weight, based on the total solids weight of said domestic composition, one or more softening agent,(B) 2% to 90% by weight, based on the total solids weight of said domestic composition, one or more anionic surfactant, and(C) a mixture consisting of(I) 1% to 25% by weight, based on the total solids weight of said domestic composition, one or more softening agent, and(II) 5% to 75% by weight, based on the total solids weight of said domestic composition, one or more anionic surfactant, and(D) 0.1% to 30% by weight, based on the total solids weight of said domestic composition, one or more amphoteric compound; and (ii) one or more cationic polymer latex comprising(I) 0.5% to 6% by weight, based on the dry weight of said polymer, one or more cationic monomer,(II) 30% to 99.5 by weight, based on the dry weight of said polymer, polymerized units of one or more aromatic monomer,(III) optionally, polymerized units of one or more additional monomer.Also provided is a method of treating paper with such cationic polymer latices.