Maleic Acid Acrylic Acid Terpolymer Sequestering Agent

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Solution Overview

Problem

Current sequestering agents used in detergent manufacturing pose environmental risks due to their toxic biodegradation products and lower calcium binding capacities, necessitating the development of environmentally friendly alternatives with superior calcium binding properties.

Innovation Solution

Synthesis of terpolymers comprising acrylic acid, maleic acid, and sodium vinyl sulfonate, using ammonium peroxydisulfate as a catalyst and sodium bisulfite as an inhibitor, to create a sequestering agent with enhanced calcium binding capacity and non-toxic biodegradation products.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If traditional sequestering agents (STPP, EDTA) are used in detergent manufacturing, then calcium binding capacity is achieved, but environmental harm increases due to toxic biodegradation products

Engineering Contradiction:

Improveenvironmental harmVSAvoidcalcium binding capacity

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The invention changes the chemical composition parameters by using acrylic acid and maleic acid as monomers instead of traditional phosphates or EDTA, creating a polycarboxylate polymer with superior calcium binding capacity that degrades into non-toxic components (carbon dioxide, water, and mineral salts), thereby resolving the contradiction between environmental safety and binding effectiveness

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite polymer structure combining acrylic acid units, maleic acid units, and sulfonate groups in a single macromolecule, achieving synergistic effects where the carboxylate groups provide calcium binding while the sulfonate groups enhance water solubility and environmental compatibility, eliminating the need for harmful traditional sequestering agents

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If polycarboxylates are used as sequestering agents, then environmental safety is improved, but calcium binding capacity is reduced compared to traditional agents

Engineering Contradiction:

Improveenvironmental safetyVSAvoidcalcium binding capacity

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The invention optimizes the molecular weight parameters of the polycarboxylate polymer within the range of 10,000-100,000 g/mol, and adjusts the molar ratio of acrylic acid to maleic acid (9:1 to 1:1) to maximize calcium binding capacity while maintaining environmental safety, achieving superior performance compared to traditional polycarboxylates

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention introduces sulfonate groups at specific locations within the polymer chain (1-10 mol% of total monomers), creating localized regions of enhanced polarity and water solubility that improve overall calcium binding efficiency without compromising the biodegradability and environmental safety of the polymer structure

Inventive Principle:

Principle #3Local quality

3Reliability

If styrene sulfonic acid is used to synthesize terpolymers with sulfonate groups, then calcium binding capacity is enhanced, but environmental toxicity increases due to benzene ring presence

Engineering Contradiction:

Improvecalcium binding capacityVSAvoidenvironmental toxicity

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention extracts and eliminates the harmful benzene ring structure from styrene sulfonic acid by replacing it with acrylic acid and maleic acid monomers that contain no aromatic rings, thereby removing the source of environmental toxicity while preserving the essential carboxylate and sulfonate functional groups needed for calcium binding and polymer structure formation

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention converts the previously harmful styrene sulfonic acid structure into beneficial acrylic acid and maleic acid components that are readily biodegradable, transforming an environmentally toxic material into an eco-friendly polymer precursor that maintains or enhances calcium binding capacity through its carboxylate and sulfonate functional groups

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 terpolymers exhibit higher calcium binding capacities compared to existing agents, reducing environmental impact and providing a safer, more effective alternative for use in detergent production.

Implementation Method 1

synthesis of terpolymers comprising acrylic acid, maleic acid, and sodium vinyl sulfonate, using ammonium peroxydisulfate as a catalyst

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Implementation Method 2

sodium bisulfite as an inhibitor, to create a sequestering agent with enhanced calcium binding capacity

Methodology Applied

Scientific EffectInhibition:

Implementation Method 3

sequestering (chelating) agents are one of the most important chemicals used in the production of detergents

Methodology Applied

Scientific EffectChelation: Adsorption

Data Source

PatentEP2657329B1Sequestering agent used in detergents with high calcium binding capacity

Publication Date: 2017.10.18 VIKING TEMIZLIK VE KOZMETIK URUNLERI PAZARLAMA SANAYI TICARET ANOMIM SIRKETI

AI summary

The present invention relates to the synthesis of the maleic acid/acrylic acid/sodium vinyl sulfonate terpolymer not posing an environmental risk and comprising substituted sulfonate groups (SO3). In particular, the present invention relates to the utilization of said synthesized polymer in the production of cleaning products as sequestering agent.