Absorbent material

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current cat litters lack a highly absorbent, biodegradable, dust-free, and odor-free material that is easy to clean and maintain, with existing options often using non-eco-friendly clays or additives that generate hazardous waste and have poor clumping or odor control.

Innovation Solution

A biodegradable absorbent material composed of soybean hulls and soybean biochar, optionally including binding agents like mineral oil, clumping agents such as guar gum, and odor-absorbing agents like hexadecyl ammonium chloride amylose inclusion complex, which are mixed and processed to create a synergistic absorbent for water, animal waste, oil, and chemicals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bentonite clay is used as the primary absorbent material, then absorbency and clumping ability are improved, but dust formation and environmental friendliness deteriorate

Engineering Contradiction:
ImproveabsorbencyVSAvoiddust formation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines soybean hulls (natural, dust-free material) with biochar (highly absorbent material) to create a composite absorbent that achieves both high absorbency and zero dust formation. The soybean hulls provide structural integrity and clumping ability while the biochar contributes porous structure for liquid absorption, eliminating the need for bentonite clay.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent utilizes biochar's inherently porous structure to achieve high absorbency without requiring fine clay particles. The porous biochar material absorbs liquids through capillary action and adsorption, providing effective absorbency while maintaining a particle-based structure that does not generate harmful dust.

Inventive Principle:
Principle #31Porous materials

2Object-generated harmful factors

If activated charcoal and baking soda are added to improve odor control, then odor suppression is improved, but manufacturing complexity and cost increase

Engineering Contradiction:
Improveodor controlVSAvoidmanufacturing complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent makes the soybean hull-biochar composite inherently odor-suppressing through its natural composition and porous structure. The biochar's porous structure naturally adsorbs odor-causing molecules, and the soybean hulls provide a natural aromatic profile, eliminating the need for additional odor-control additives like activated charcoal or baking soda.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent changes the fundamental parameters of the absorbent material by using biochar's surface chemistry and porous structure to provide inherent odor suppression capabilities, rather than relying on traditional odor-control additives. This approach simplifies the formulation while maintaining effective odor control.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If silica gel crystals are used to absorb urine, then absorbency is improved, but the material becomes non-biodegradable and less environmentally friendly

Engineering Contradiction:
ImproveabsorbencyVSAvoidbiodegradability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent changes the material composition from synthetic silica gel to natural, biodegradable soybean hulls combined with biochar. This parameter change maintains high absorbency through the biochar's porous structure while ensuring the entire product is biodegradable and environmentally friendly, unlike silica gel-based litters.

Inventive Principle:
Principle #35Parameter changes

4Object-generated harmful factors

If wood cat litters are used to provide aroma and odor trapping, then odor control is improved, but dust formation increases

Engineering Contradiction:
Improveodor controlVSAvoiddust formation
Core Design Contradiction:
Object-generated harmful factorsVSObject-affected harmful factors

Solution Approach 1:

The patent creates a composite of soybean hulls and biochar that provides odor control through the biochar's adsorption properties and soybean hulls' natural aroma, without the dust formation problems associated with wood-based litters. The composite structure maintains particle integrity while providing effective odor suppression.

Inventive Principle:
Principle #40Composite materials

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 soybean hull and biochar-based material demonstrates improved absorbency, reduced dust formation, effective odor suppression, and comparable clumping ability to traditional clay litters, with enhanced durability and environmental sustainability.

Implementation Method 1

biochar can be produced with extremely high porosity with the ability to adsorb large amounts of organic chemicals

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

The silica gel crystals in such litters are dotted with tiny pores, allowing the crystals to absorb cat urine

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 3

the ability to adsorb large amounts of organic chemicals, such as those compounds associated with cat urine odors

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentUS11806691B2Absorbent material
Publication Date: 2023.11.07 THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY DEPARTMENT OF HEALTH & HUMAN SERVICES
  • US11806691B2 patent drawing
  • US11806691B2 patent drawing
  • US11806691B2 patent drawing

AI summary

The invention relates to absorbent compositions comprising soybean hulls and soybean hull biochar, methods of preparing such absorbent compositions, and methods of using such compositions in the preparation of articles of manufacture.