Enzyme Granules Storage Stability Polyamine

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Solution Overview

Problem

Enzyme granules in detergents face challenges with storage stability, as existing solutions do not effectively maintain enzyme activity over time, especially when exposed to aggressive components in detergents.

Innovation Solution

Incorporating a polyamine with at least 10% w/w nitrogen, where at least 50% of N atoms are present as amines, into the enzyme granules, along with a salt of a polyvalent cation, to enhance storage stability by forming a homogeneous mixture that keeps the enzyme in a soluble form.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If various additives are incorporated into enzyme granules to improve storage stability, then the storage stability of enzyme granules is improved, but the device complexity and formulation complexity increase

Engineering Contradiction:

Improvestorage stabilityVSAvoidformulation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent changes the chemical composition parameters of the granule core by incorporating specific polyamines (containing at least 10% w/w nitrogen with at least 50% of N atoms present as amines) and salts of polyvalent cations. This parameter change improves storage stability by protecting enzyme structure and activity without requiring complex multi-component formulations, thus resolving the contradiction between reliability improvement and formulation complexity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite material system within the granule core by combining enzyme, polyamine, and polyvalent cation salt in a homogeneous mixture. This composite approach enhances storage stability through synergistic interactions between components while maintaining a relatively simple formulation structure, addressing the technical contradiction effectively

Inventive Principle:

Principle #40Composite materials

2Reliability

If enzyme granules are stored in granular detergents, then the enzyme is protected during storage, but aggressive detergent components reduce enzyme activity over time

Engineering Contradiction:

Improvestorage stabilityVSAvoidenzyme deactivation by detergent components

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The polyamine and polyvalent cation salt act as intermediary substances between the enzyme and aggressive detergent components. These intermediaries form a protective environment within the granule core that shields the enzyme from deactivating effects of detergent ingredients, thereby maintaining enzyme activity during storage while allowing the granules to be part of granular detergent formulations

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the local chemical environment parameters within the granule core by incorporating polyamines and polyvalent cation salts, creating a microenvironment that is less aggressive to the enzyme. This parameter change in the local environment protects the enzyme from harmful detergent components while maintaining overall formulation simplicity

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP2732018B1Storage-stable enzyme granules

Publication Date: 2017.01.04 NOVOZYMES AS

AI summary

The storage stability of enzyme granules for detergents can be improved by incorporating a polyamine having a molecule with at least 10% w/w of nitrogen wherein at least 50% of the N atoms are present as amines.