Grafted Polyacrylic Acid-Polyether Polymer for Detergent Films
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Solution Overview
Problem
Current polymer compositions involving α,β-ethylenically unsaturated carboxylic acids and polyethers face challenges such as incompatibility, phase separation, and difficulty in forming transparent films or coatings, which limits their use in detergents and cleaning agents.
Innovation Solution
A method involving free-radical polymerization of α,β-ethylenically unsaturated carboxylic acids in the presence of polyether components, specifically polyetherols and surfactants, to produce a polymer composition that can be formulated into solid forms like films, coatings, or particulate solids, enhancing compatibility and application properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyethers and surfactants containing ether groups are mixed with polyacrylic acid, then detergent effect and cleaning performance are improved, but phase separation or precipitation occurs due to incompatibility
Solution Approach 1:
The patent combines polyethers and polyacrylic acid into a single polymer structure through graft copolymerization, where polyether side chains are attached to the polyacrylic acid backbone. This merging eliminates phase separation by creating a homogeneous polymer that maintains both the detergent effect of polyethers and the film-forming properties of polyacrylic acid.
Solution Approach 2:
The invention creates a composite polymer structure consisting of a polyacrylic acid backbone with grafted polyether side chains. This composite material integrates the functional properties of both components at the molecular level, ensuring compatibility while maintaining cleaning performance and film-forming capabilities.
2Ease of manufacture
If polyethers and surfactants are added to powdered formulations, then adhesive properties are improved, but flowability is lost due to waxy or sticky consistency
Solution Approach 1:
The patent controls the molecular weight and composition parameters of the grafted polymer to optimize the balance between adhesive properties and flowability. By adjusting the degree of grafting and polyether chain length, the polymer achieves sufficient adhesion for film formation while maintaining adequate flow characteristics for powder formulation processing.
3Reliability
If polyethers or surfactants containing ether groups are used to form films and coatings, then detergent effect is enhanced, but transparency and aesthetic appearance are compromised
Solution Approach 1:
The patent distributes polyether functional groups as side chains throughout the polyacrylic acid backbone, creating local detergent-active sites while maintaining the overall transparency and film-forming capability of the polyacrylic acid matrix. This local concentration of functionality preserves aesthetic appearance while enhancing 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 resulting polymer compositions are compatible with polyacrylic acid and other surfactants, allowing for the production of transparent films and coatings with controlled dissolution profiles, suitable for use in detergents and cleaning agents.
Implementation Method 1
an α,β-ethylenically unsaturated carboxylic acid is subjected to free-radical polymerization in the presence of at least one polyether component
Implementation Method 2
F.E. Bailey et al. describe in Polymer Preprints, American Chemical Society, Division of Polymer Chemistry, 1960, vol. 1, issue 2, p. 202-205 and the literature cited therein, the formation of molecular association complexes of ethylene oxide polymers, which have a very high molecular weight, with polymeric acids, such as polyacrylic acid, in aqueous solutions.
Data Source
Figure 1
AI summary
The present invention relates to a method for preparing a polymer composition, in which a αβ-ethylenically unsaturated carboxylic acid is subjected to a radical polymerization in the presence of at least one polyether component, to the polymer composition obtained according to said method and to the use thereof.