Aromatic Solvent Composition Low-Temperature Fluidity
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Solution Overview
Problem
Heavy aromatic organic solvent compositions with C10 compounds face issues of precipitate formation and gelation at low temperatures, leading to clogging and corrosion in pipes, and reduced solubility, which existing technologies fail to adequately address.
Innovation Solution
Aromatic organic solvent composition with a C9:C10 weight ratio of 1:1.5 to 1:2.8, trimethylbenzene to tetramethylbenzene ratio of 1:0.1 to 1:1, and naphthalene content of 5 ppm or less, achieving a pour point of -90°C to -30°C, thereby preventing precipitate formation and maintaining excellent physical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heavy aromatic organic solvent with C10 compounds is used, then flash point and work stability are improved, but pour point increases causing precipitate formation and gelation at low temperatures
Solution Approach 1:
The invention changes the compositional parameters by strictly limiting naphthalene content to 0.7% by volume or less and controlling the C9:C10 aromatic hydrocarbon ratio, thereby modifying the pour point parameter to -30°C or less while maintaining the high flash point characteristics of heavy aromatic solvents
Solution Approach 2:
The invention creates a composite aromatic hydrocarbon system combining C9 and C10 aromatic hydrocarbons in specific proportions, where C9 compounds (with lower pour points) are blended with C10 compounds (with higher flash points) to achieve a balanced composition that satisfies both low-temperature fluidity and high-temperature safety requirements
2Stability of the object's composition
If heavy aromatic organic solvent composition is used, then solubility is improved, but fluidity decreases causing precipitate formation and gelation in extreme environments
Solution Approach 1:
The invention optimizes the compositional parameters by controlling the ratio of C9 to C10 aromatic hydrocarbons and limiting naphthalene content, achieving a balance where solubility is maintained through aromatic content while fluidity is improved by incorporating sufficient C9 compounds that keep the pour point at -30°C or less
Data Source
AI summary
The present invention relates to an aromatic organic solvent composition and a paint composition including the same. In some embodiments, the present invention relates to an aromatic organic solvent composition in which a weight ratio of C9 aromatic hydrocarbon to C10 aromatic hydrocarbon is 1:1.5 to 1:2.8, a weight ratio of trimethylbenzene and tetramethylbenzene is 1:0.1 to 1:1, the content of naphthalene is 5 ppm or less, and a pour point is - 90°C to -30°C.