Fluorinated Oxetane Polyacrylate Copolymer Slip Agent
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Solution Overview
Problem
Current slip- and leveling agents lack enhanced surface properties such as improved anti-cratering performance, low coefficient of friction, good intercoat adhesion, and effective foam control while maintaining aesthetics and overcoatability.
Innovation Solution
A modified polyacrylate comprising fluorinated oxetane polymer units functionalized with unsaturated dicarboxylic acid and monoethylenically unsaturated polydimethylsiloxane units, which is copolymerized with alkyl(meth)acrylate units, providing a copolymer suitable as a slip- and leveling agent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluorinated polymers and polysiloxanes are combined in a polyacrylic structure, then slip properties and substrate wetting are improved, but intercoat adhesion problems and foam stabilization may occur
Solution Approach 1:
The patent combines fluorinated oxetane polymer units functionalized with unsaturated dicarboxylic acid and terminal reactive polysiloxane units into a single copolymer structure. This composite material integrates the low surface energy and hydrophobic character of fluorinated polymers with the flexibility and biocompatibility of polysiloxanes, achieving enhanced slip properties and complete substrate wetting while maintaining intercoat adhesion through the polyacrylic backbone structure
Solution Approach 2:
The patent modifies the chemical structure by incorporating specific functional groups (unsaturated dicarboxylic acid functionalized fluorinated oxetane units) that alter the surface properties and interfacial interactions. The terminal reactive polysiloxane units provide controlled reactivity that adjusts the balance between slip enhancement and adhesion maintenance, resolving the contradiction through precise parameter optimization
2Reliability
If fluorinated oxetane polymer units functionalized with unsaturated dicarboxylic acid are copolymerized with terminal reactive polysiloxane units, then anti-cratering performance and foam control are improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges multiple functional units (fluorinated oxetane polymer units functionalized with unsaturated dicarboxylic acid and terminal reactive polysiloxane units) into a single copolymer molecule. This consolidation integrates anti-cratering performance, foam control, and slip enhancement into one additive, reducing the number of separate components and simplifying the manufacturing process compared to using multiple separate additives
Solution Approach 2:
The copolymer structure performs multiple functions simultaneously: the fluorinated units provide anti-cratering performance and low surface energy, the polysiloxane units contribute to foam control and flexibility, and the polyacrylic backbone ensures compatibility and processability. This multi-functionality eliminates the need for separate additives, reducing manufacturing 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 solution offers improved slip properties, complete substrate wetting, reduced crater formation, low foam properties, and maintained overcoatability, enhancing the aesthetics and performance of coatings and inks.
Implementation Method 1
effective surface active additives for reduction of the surface tension of liquid media to ensure substrate wetting
Implementation Method 2
complete substrate wetting... edge crawling, air-draft sensitivity, fish eyes and/or other dewetting effects of the liquid resin solution during the drying stage may be avoided or at least reduced significantly
Data Source
AI summary
The invention relates to a new modified polyacrylate comprising fluorinated oxetane (FOX) polymer units functionalized with an unsaturated dicarboxylic acid and siloxane units and to its use as slip- and leveling agent and anti-cratering agent for a variety of applications. Thus, the invention relates to a slip- and leveling agent characterized in that it comprises a copolymer which is obtained by copolymerizing A at least one unit of a fluorinated oxetane polymer functionalized with an unsaturated dicarboxylic acid; B at least one terminal reactive polysiloxane unit; C at least one alkyl(meth)acrylate unit or cycloalkyl(meth)acrylate unit and/or (meth)acrylic acid and/or other units originating from vinylic compounds that can form radicals.