Quinolinol Manganese Complex Curing Accelerator
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Solution Overview
Problem
Current curing accelerators for oxidatively polymerizable unsaturated resins, such as cobalt metal soap, pose health concerns due to carcinogenicity and high costs, and alternatives like manganese metal soap increase drying time, while existing solutions with quinolinol compounds have limited solubility and versatility.
Innovation Solution
A manganese or cobalt complex using a quinolinol compound as a ligand, specifically a metal salt or quinolinol compound with a manganese or cobalt central metal, offering high solubility and versatility, and reducing the need for cobalt or increasing its usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cobalt metal soap is used as a curing accelerator, then drying performance is improved, but health safety deteriorates due to carcinogenicity concerns
Solution Approach 1:
The patent replaces expensive and harmful cobalt metal soap with a manganese metal soap complex that is both safer and cost-effective. The complex acts as a catalyst that can be used in small amounts while maintaining high drying performance, eliminating the need for large quantities of harmful cobalt compounds.
Solution Approach 2:
The patent introduces an organic ligand as an intermediary that forms a complex with manganese metal soap. This complex mediates the curing acceleration function while reducing the harmful effects associated with direct use of cobalt metal soap. The ligand-modified manganese complex serves as a safer intermediate that achieves the same technical effect.
2Object-affected harmful factors
If manganese metal soap is used as a curing accelerator, then health safety is improved, but drying time increases
Solution Approach 1:
The patent changes the chemical parameters of the manganese metal soap by forming a complex with an organic ligand. This parameter change transforms the manganese complex into a more active catalyst that accelerates drying while maintaining health safety. The ligand modification alters the reactivity and catalytic efficiency of the manganese compound.
Solution Approach 2:
The patent creates a composite curing accelerator by combining manganese metal soap with an organic ligand to form a coordination complex. This composite material exhibits enhanced catalytic activity compared to simple manganese metal soap, achieving fast drying times while maintaining the health benefits of manganese-based compounds.
3Productivity
If a complex formed of quadridentate ligand compound and metal is used, then curing reaction occurs, but solubility in organic solvents deteriorates
Solution Approach 1:
The patent applies local quality modification by selecting a specific organic ligand structure that provides both catalytic activity and good solubility. The ligand is designed with appropriate hydrocarbon chains or aromatic groups that enhance solubility in organic solvents while maintaining the ability to form active complexes with manganese metal soap for curing acceleration.
Solution Approach 2:
The patent changes the structural parameters of the ligand to optimize both solubility and catalytic activity. By adjusting the ligand's molecular weight, chain length, or aromatic content, the complex achieves better solubility in organic solvents while retaining its ability to catalyze the curing reaction effectively.
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 solution provides excellent curing performance comparable to cobalt metal soap, with short curing times, high solubility in organic solvents, and outdoor usability, addressing health and cost concerns while maintaining high drying efficiency.
Implementation Method 1
a curing accelerator for an oxidatively polymerizable unsaturated resin including a manganese or cobalt complex
Data Source
AI summary
To provide a curing accelerator for an oxidatively polymerizable unsaturated resin which can decrease the amount of cobalt metal soap used and has curing performance equal to or higher than excellent curing performance of the cobalt metal soap, and a printing ink and a coating material using the same. A curing accelerator for an oxidatively polymerizable unsaturated resin including a manganese or cobalt complex (α) containing quinolinol compound ions represented by Structural Formula (1) as a ligand, and a printing ink and a coating material including the curing accelerator.In the formula, R1 is any of a hydrogen atom, a hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, and a halogen atom, and n is an integer of 1 to 6.