Platewash Composition Narrow Boiling Range Distillation
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Solution Overview
Problem
Flexographic platewash formulations with hydrocarbon solvents often have boiling point ranges that skew uniformity during distillation, making it difficult to maintain a stable composition during recycling and platemaking processes.
Innovation Solution
Compositions comprising 2-ethylhexyl acetate or diisopropylbenzene combined with a hydrocarbon solvent having a narrow boiling point range of 200° C. to 211° C., along with optional co-solvents, to ensure uniform distillation and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If hydrocarbon solvents with boiling point ranges are used in platewash formulations, then the solvent can effectively dissolve unexposed photopolymer, but the composition uniformity during distillation becomes skewed and difficult to maintain
Solution Approach 1:
The patent changes the physical-chemical parameters of the solvent system by selecting hydrocarbon solvents with specifically controlled boiling points (200-211°C) and narrow boiling point ranges (≤10°C). This parameter control ensures that all solvent components vaporize and condense within a tight temperature window during distillation, maintaining composition uniformity while preserving dissolving effectiveness.
Solution Approach 2:
The patent creates a composite solvent system combining multiple hydrocarbon solvents (e.g., C10-C16 cyclic hydrocarbons, C12-C24 linear hydrocarbons, aromatic hydrocarbons) whose individual boiling point ranges overlap and converge within the 200-211°C window. This composite approach allows each component to contribute to dissolving power while the collective system maintains narrow overall boiling behavior for uniform distillation.
2Adaptability or versatility
If multiple solvents with different boiling points are combined to enhance cleaning capability, then the platewash can remove various types of residues, but the distillation uniformity and recycling stability are compromised
Solution Approach 1:
The patent changes the temperature parameter range by restricting all solvent components to boil within 200-211°C. This tight parameter control allows the system to maintain versatility in cleaning different residues (through chemical diversity) while ensuring reliable recycling via uniform distillation behavior, as all components vaporize and re-condense together without separation.
Solution Approach 2:
The patent applies local quality by assigning specific functional roles to different solvent components within the narrow boiling window: cyclic hydrocarbons target certain residue types, linear hydrocarbons address others, and aromatic hydrocarbons handle remaining contaminants. Each component has optimized properties for its specific cleaning task while all maintain compatible volatility for uniform distillation.
3Productivity
If solvents with broader boiling point ranges are used to improve platewash performance, then the solvent can handle diverse cleaning requirements, but the conformity and uniformity during distillation cycle are easily skewed
Solution Approach 1:
The patent changes the boiling point parameter specification from broad ranges to a precise window of 200-211°C with maximum range of 10°C. This parameter precision enables high platewash performance through solvent diversity while guaranteeing distillation conformity, as the tight window ensures all components complete vaporization and condensation together without compositional drift during the recycling cycle.
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 use of these compositions results in a uniform chemical composition throughout the distillation cycle, enhancing the stability and efficiency of the platewash process.
Implementation Method 1
the distilled composition comprises the same components in substantially the same proportions as the undistilled composition
Data Source
AI summary
This invention relates to a composition comprising a hydrocarbon solvent in combination with diisopropylbenzene or 2-ethylhexyl acetate, and optionally, a co-solvent selected from tetrahydrofurfuryl alcohol, 2-ethoxyethanol, terpineol, dipropylene glycol methyl ether, 2-butoxyethanol, 2-(2-butyoxyethoxy) ethanol, a naphthenic hydrocarbon, a paraffinic hydrocarbon, an olefinic hydrocarbon, an isoparaffinic hydrocarbon, a terepene, benzyl alcohol, cyclohexanol, methyl cyclohexanol, hexyl alcohol, and heptyl alcohol, and methods directed to the preparation and use of this composition. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.