Acrylamide Polymer Paper Strength Agent

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Solution Overview

Problem

Conventional paper strength agents containing acrylamide-based polymers pose health risks and are regulated by the FDA, necessitating a reduction in (meth)acrylamide content, especially for applications like food wrapping.

Innovation Solution

An acrylamide-based polymer is developed through polymerization of (meth)acrylamide, quaternary ammonium-based monomers, and (meth)allylsulfonic acid salts, excluding crosslinkable monomers with nitrogen and tertiary amino-based monomers, to enhance paper strength while minimizing (meth)acrylamide content.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional acrylamide-based polymer is used as paper strength agent, then paper strength is improved, but (meth)acrylamide content in paper product increases causing health risks

Engineering Contradiction:

Improvepaper strengthVSAvoid(meth)acrylamide content

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The invention extracts and eliminates the harmful (meth)acrylamide component from the polymer structure by using alternative monomers (quaternary ammonium-based monomers and (meth)allylsulfonic acid salts) that do not contain (meth)acrylamide, thereby removing the harmful factor while preserving the paper strength enhancement function

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the chemical composition parameters of the polymer by replacing acrylamide monomer with quaternary ammonium-based monomers and (meth)allylsulfonic acid salts, fundamentally altering the polymer's chemical structure to eliminate harmful (meth)acrylamide content while maintaining or improving paper strength properties

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If quaternary ammonium-based monomers and (meth)allylsulfonic acid salts are used for polymerization, then (meth)acrylamide content is reduced, but polymerization complexity increases

Engineering Contradiction:

Improve(meth)acrylamide contentVSAvoidpolymerization process complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The invention uses water-soluble polymerization initiators as intermediaries to facilitate the polymerization of quaternary ammonium-based monomers and (meth)allylsulfonic acid salts, simplifying the polymerization process by enabling it to proceed in aqueous medium without requiring complex organic solvent systems or specialized equipment

Inventive Principle:

Principle #24Intermediary (Mediator)

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 effectively increases paper strength and reduces (meth)acrylamide content, making it suitable for use in food wrapping paper and other industrial applications.

Implementation Method 1

polymerization of a polymer component including (meth)acrylamide, a quaternary ammonium-based monomer, and (meth)allylsulfonic acid salt

Methodology Applied

Scientific EffectPolymerization:

Data Source

PatentEP3121205B1Acrylamide polymer, paper strength enhancing agent, and paper

Publication Date: 2022.12.21 HARIMA CHEM INC

AI summary

The acrylamide-based polymer is produced by polymerizing a polymer component including (meth)acrylamide, a quaternary ammonium-based monomer, and (meth)allylsulfonic acid salt, but not including either a crosslinkable monomer containing nitrogen or a tertiary amino-based monomer.