Depolymerized Styrenic Polymers for UV-Curable Ink Formulations
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Solution Overview
Problem
Polystyrene waste accumulation and non-biodegradability lead to environmental issues, and traditional polystyrene plastics are inefficiently recycled, contributing to greenhouse gas emissions and land waste, while existing UV-active monomers are typically acrylic-based, limiting compatibility with polystyrene-derived materials.
Innovation Solution
Styrenic polymers are produced via depolymerization of polystyrene, including recycled materials, to create lower molecular weight, olefin-containing polymers that are soluble in organic solvents and compatible with UV-active monomers, used in formulations to replace traditional polystyrene-based materials in inks, paints, coatings, and adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If polystyrene is traditionally recycled through land-filling or burning, then material loss and land waste occur, but greenhouse gas emissions are generated
Solution Approach 1:
The invention changes the chemical parameters of polystyrene through controlled depolymerization, converting high molecular weight polystyrene into lower molecular weight styrenic polymers with specific functional groups. This transformation enables the material to be converted from a waste product into a valuable chemical feedstock for producing adhesives, coatings, and other polymers, thereby achieving material recovery without harmful emissions
Solution Approach 2:
The invention introduces an intermediary chemical process (depolymerization reaction) between the waste polystyrene and the final products. Through this intermediary step, polystyrene is converted into styrenic polymers that serve as building blocks for new materials, creating a beneficial transformation pathway that avoids both land-filling and combustion
2Reliability
If UV-active monomers are traditionally acrylic-based, then compatibility with polystyrene-derived materials is limited
Solution Approach 1:
The invention changes the chemical parameters of the UV-active monomers by selecting specific types (acrylate, vinyl, or styrene-based) that have improved compatibility with styrenic polymers. This parameter change in monomer selection enables better integration with polystyrene-derived materials while maintaining formulation stability and UV-curing functionality
Solution Approach 2:
The invention creates composite formulations by combining styrenic polymers (derived from polystyrene) with compatible UV-active monomers. This composite approach allows the synergistic integration of depolymerized polystyrene materials with carefully selected monomers, achieving both compatibility and reliable UV-curing performance in the same formulation
3Adaptability or versatility
If styrenic polymers are produced via depolymerization of polystyrene, then lower molecular weight and olefin content are achieved, but production process complexity increases
Solution Approach 1:
The invention achieves desired polymer properties by controlling parameters during depolymerization, such as temperature, catalyst selection, and reaction time. These parameter changes enable production of styrenic polymers with specific molecular weights and olefin contents that are optimized for formulation applications, balancing product versatility with process complexity
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 styrenic polymers effectively replace traditional polystyrene-based materials, reducing waste and emissions by utilizing recycled plastics and enhancing compatibility with UV-active monomers, resulting in stable formulations for inks, paints, and adhesives with improved properties.
Implementation Method 1
Styrenic polymers are produced via depolymerization of polystyrene, including recycled materials, to create lower molecular weight, olefin-containing polymers
Implementation Method 2
the styrenic polymer is solubilized in a UV-active monomer creating a stable formulation
Data Source
AI summary
A latex and solution with UV-active monomers created using styrenic polymers created via the depolymerization of a polystyrene feedstock. In some embodiments the polystyrene feedstock contains recycle polystyrene. In some embodiments, the styrenic polymers contain olefins. In some embodiments, the latex and solution with UV-active monomers are used in ink formulations. In some embodiments, latex and solution UV-active monomers can replace styrenated acrylics within flexo and/or gravure ink formulations. Other applications of the latex and solution with UV-active monomers can include, but are not limited to, coatings, paints, adhesives. Additional applications of the latex can include but are not limited to immunoassays.