Acrylic Copolymer Cleaning Composition for Oily Contaminant Removal
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Solution Overview
Problem
Current cleaning agent compositions are insufficient for achieving the high surface cleanliness required for advanced recording media, high-integration semiconductors, and large-scaled, high-fineness flat panel displays, particularly in removing oily components and fine particles effectively.
Innovation Solution
A cleaning agent composition containing a copolymer compound with a constituting unit derived from acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid, in a specific molar ratio, and optionally 1-hydroxyethylidene-1,1-diphosphonic acid and a nonionic surfactant, designed to effectively dissolve and remove oily components and fine particles from metallic or glassy substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cleaning agent compositions are used, then general cleaning is achieved, but high surface cleanliness required for advanced recording media, high-integration semiconductors, and large-scaled flat panel displays cannot be obtained
Solution Approach 1:
The invention changes the chemical parameters of the cleaning agent by specifying a copolymer with acrylic acid content of 20-90 mol% and 2-acrylamide-2-methylpropanesulfonic acid content of 10-80 mol%, creating a composition that achieves both high surface cleanliness and reliable cleaning effectiveness for advanced substrates
Solution Approach 2:
The invention uses a composite copolymer material combining acrylic acid units and 2-acrylamide-2-methylpropanesulfonic acid units in specific ratios, which provides synergistic effects for removing both oily components and fine particles, achieving the required surface cleanliness for high-precision applications
2Manufacturing precision
If cleaning agents with stronger cleaning power are used, then oily components and fine particles are removed more effectively, but particle aggregation may occur and rinsability deteriorates
Solution Approach 1:
The invention optimizes the molecular composition parameters of the copolymer, controlling the ratio of acrylic acid to 2-acrylamide-2-methylpropanesulfonic acid units, which balances the cleaning power for particle removal with adequate rinsability and prevents particle aggregation during the cleaning process
Solution Approach 2:
The copolymer structure provides different functional groups at different molecular levels - acrylic acid units contribute to cleaning effectiveness while 2-acrylamide-2-methylpropanesulfonic acid units help prevent particle aggregation and improve rinsability, creating local quality differentiation within the molecule
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 composition achieves excellent cleanliness and operability, ensuring high surface quality for recording media, semiconductors, and flat panel displays by enhancing the dissolution of oily components and dispersion and removal of fine particles, while maintaining rinsability and preventing particle aggregation.
Implementation Method 1
enhancing the dissolution of oily components
Implementation Method 2
dispersion and removal of fine particles
Data Source
AI summary
The present invention relates to a cleaning agent composition for use in cleaning a substrate for recording media, a substrate for photomask, or a substrate for flat panel display, a surface of which at least contains a metallic or glassy substrate moiety, the cleaning agent composition containing (I) a copolymer compound satisfying at least the following (i) to (iii): (i) a constituting unit A1 derived from acrylic acid is contained in an amount of 20% by mol or more of the entire constituting units; (ii) the constituting unit A1 derived from acrylic acid and a constituting A2 derived from 2-acrylamide-2-methylpropanesulfonic acid are contained in a total amount of 90% by mol or more of the entire constituting units; and (iii) the constituting unit A1 and the constituting unit A2 of the entire constituting units are in a content ratio [constituting unit A1 (% by mol)/constituting unit A2 (% by mol)] of from 91/9 to 95/5.