Solvent Composition Reducing Toxicity and VOC Emissions

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Solution Overview

Problem

Current solvent compositions, such as xylenes and toluene, pose health and environmental risks due to their toxicity and volatility, leading to regulation as hazardous air pollutants and volatile organic compounds, necessitating the development of safer alternatives for industrial applications.

Innovation Solution

A solvent composition comprising methyl acetate (MA) in amounts between 80% to 90% v/v and parachlorobenzotrifluoride (PCBTF) in amounts between 10% to 20% v/v, which can replace xylene, toluene, or PCBTF, offering lower toxicity and volatility, thus reducing environmental impact and regulatory concerns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional solvents like xylene or toluene are used, then effective solvency and volatility are achieved, but toxicity and environmental harm increase

Engineering Contradiction:

ImprovetoxicityVSAvoidsolvency

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent combines methyl acetate (80-90% v/v) and PCBTF (10-20% v/v) to create a composite solvent system that leverages the low toxicity of methyl acetate with the effective solvency of PCBTF, achieving both safety and performance requirements

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the solvent composition by changing the chemical parameters from conventional high-toxicity solvents to a blend of low-toxicity methyl acetate and VOC-exempt PCBTF, while maintaining the necessary solvency through optimized concentration ratios

Inventive Principle:

Principle #35Parameter changes

2Speed

If volatile solvents are used, then evaporation and drying speed are improved, but VOC emissions and environmental regulation issues increase

Engineering Contradiction:

Improveevaporation rateVSAvoidVOC emissions

Core Design Contradiction:

SpeedVSObject-generated harmful factors

Solution Approach 1:

The patent changes the volatility parameter by using PCBTF which has lower volatility than conventional solvents like xylene, thereby reducing VOC emissions while still achieving acceptable evaporation rates through the synergistic blend with methyl acetate

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the potential disadvantage of lower volatility into a benefit by reducing VOC emissions and achieving VOC-exempt status, while the controlled evaporation rate still allows for practical application and drying performance

Inventive Principle:

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

3Object-affected harmful factors

If safer alternative solvents are used, then toxicity is reduced, but solvency and performance may be compromised

Engineering Contradiction:

Improvehealth effectsVSAvoidperformance

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent creates a composite solvent system where methyl acetate provides safety and low toxicity, while PCBTF contributes effective solvency for industrial applications, achieving both health protection and performance requirements

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent uses PCBTF as an intermediary substance that bridges the gap between the safety of methyl acetate and the performance requirements of industrial solvents, enabling the blend to meet both health and performance criteria

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9221985B2Solvent compositions

Publication Date: 2015.12.29 AXEL PLASTICS RESEARCH LABORATORIES INC

AI summary

The present disclosure provides, in part, a solvent composition including methyl acetate and parachlorobenzotrifluoride.