Dye-Containing Thermosetting Resin Particles for Immunostaining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing fluorescent dye-containing resin particles for immunostaining suffer from significant particle size variation, leading to low bright spot detection accuracy and dye elution during the clearing process, which affects fluorescence signal evaluation.
Innovation Solution
A method involving the dispersion of seed particles formed from thermosetting resin in a medium, followed by polymerization of a monomer in the presence of a dye and an acid catalyst, specifically using a mixture of dodecylbenzene sulfonic acid, to produce dye-containing thermosetting resin particles with a controlled particle size variation coefficient of 8% or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional polymerization methods are used to produce fluorescent dye-containing resin particles, then production is simple, but particle size variation is large (10-15% or more) leading to low bright spot detection accuracy
Solution Approach 1:
The polymerization process is divided into two distinct stages: first forming seed particles with controlled size, then performing secondary polymerization to achieve final particle growth. This segmentation allows independent control of nucleation and growth phases, reducing particle size variation to 8% or less while maintaining production simplicity.
Solution Approach 2:
Seed particles are prepared in advance with uniform size distribution before the main polymerization process. This preliminary action establishes a controlled foundation that prevents uncontrolled nucleation during subsequent polymerization, ensuring narrow particle size distribution and high bright spot detection accuracy.
2Manufacturing precision
If post-treatment such as centrifugation is performed to uniform particle sizes, then particle size uniformity improves, but production complexity and time increase
Solution Approach 1:
The polymerization system itself generates uniform particle sizes through controlled seed particle methodology and optimized reaction conditions, eliminating the need for external post-treatment devices like centrifugation. The process achieves particle size uniformity (8% or less variation) inherently through the chemistry and physics of the polymerization reaction, not through mechanical separation.
3Reliability
If conventional resin particles are used, then production is straightforward, but dye elution occurs during clearing process affecting fluorescence signal
Solution Approach 1:
The invention uses thermosetting resin particles that form a cross-linked three-dimensional network structure, creating a composite material where the dye is trapped within the rigid polymer matrix. This composite structure prevents dye elution during clearing processes while maintaining ease of production through standard polymerization techniques.
Solution Approach 2:
The resin is transformed from a thermoplastic to a thermosetting state through cross-linking, fundamentally changing the material parameters. This cross-linked structure creates strong intermolecular bonds that prevent dye migration and elution, ensuring fluorescence signal retention during subsequent processing steps without complicating the manufacturing process.
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
This method results in high bright spot detection accuracy and prevents dye elution, ensuring precise measurement and retention of fluorescent signals during immunological observations.
Implementation Method 1
polymerizing a monomer for thermosetting resin synthesis in the thus obtained dispersion in the presence of a dye and an acid catalyst
Data Source
AI summary
The present invention provides a method of producing dye-containing thermosetting resin particles, the method including: dispersing seed particles formed from a thermosetting resin in a dispersion medium; and polymerizing a monomer for thermosetting resin synthesis in the thus obtained dispersion in the presence of a dye and an acid catalyst. By the method of producing dye-containing thermosetting resin particles according to the present invention, dye-containing thermosetting resin particles whose particle size variation coefficient is small at, for example, 8% or less, can be produced without performing a post-treatment such as centrifugation. Therefore, when immunological observation is performed by a fluorescent labeling method using fluorescent dye-containing resin particles produced by the method of producing dye-containing thermosetting resin particles according to the present invention, a high bright spot detection accuracy can be attained.