Cationic Polyglucan Spore Composition for Surface Deposition

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Solution Overview

Problem

Existing surface treatment compositions, particularly those involving immersion in water and rinsing, face challenges in achieving effective deposition of bacterial spores due to their removal by water, which diminishes their amount on the treated surface.

Innovation Solution

A surface treatment composition comprising bacterial spores, preferably Bacillus spores, and a cationic polyglucan, with specific CFU and weight percentages, designed to enhance spore deposition on fabrics or hard surfaces, even in laundry processes involving water immersion and rinsing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If water immersion and rinsing steps are used in the treatment process, then cleaning effectiveness is improved, but spore deposition is reduced due to spore removal by water

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidspore deposition
Core Design Contradiction:
Ease of manufactureVSQuantity of substance

Solution Approach 1:

A deposition aid is introduced as an intermediary substance between the spores and the water-based treatment solution. This deposition aid modifies the interaction between spores and water, allowing spores to remain deposited on surfaces even during water immersion and rinsing operations, thereby enabling both effective cleaning and adequate spore deposition

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The chemical properties of the treatment solution are modified by adding a deposition aid, which changes the surface tension, adhesion characteristics, or other parameters of the aqueous solution. This parameter change allows the solution to maintain spores on surfaces during rinsing while still providing effective cleaning action

Inventive Principle:
Principle #35Parameter changes

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 provides improved deposition and retention of spores on surfaces, enabling enhanced stain removal and malodor prevention, with spores capable of germinating and providing fragrance release benefits.

Implementation Method 1

a surface treatment composition comprising bacterial spores, preferably Bacillus spores, and a cationic polyglucan

Methodology Applied
Scientific EffectElectrostatic interactions: Electrostatics

Data Source

PatentUS20260092238A1Composition comprising spores and cationic glucan
Publication Date: 2026.04.02 PROCTER & GAMBLE CO
  • US20260092238A1 patent drawing
  • US20260092238A1 patent drawing

AI summary

A surface treatment composition that includes from about 1×102 to about 1×109 CFU/g of the composition of Bacillus spores and from about 0.01% to about 5% by weight of the composition of a cationic polyglucan.