Cyclocarbonate Acrylate Copolymer Composition for Viscosity Stability
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Solution Overview
Problem
Existing cyclocarbonate group-containing (meth)acrylate polymers used in paints and inks experience viscosity increases over time, leading to potential defects during printing, particularly under severe conditions or long-term storage.
Innovation Solution
A cyclocarbonate group-containing (meth)acrylate monomer with a di(meth)acrylate monomer content of 3 weight % or lower, combined with another monomer for copolymerization, is used to produce a polymer that maintains stable viscosity over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cyclocarbonate group-containing (meth)acrylate polymer is used in paints and inks, then the polymer provides good transparency and viscosity properties, but the viscosity increases over time during storage and severe conditions
Solution Approach 1:
The patent changes the chemical structure parameters of the polymer by introducing specific side chain structures (cycloaliphatic hydrocarbon groups with 3-8 carbon atoms) and controlling the polymer composition to achieve optimal viscosity stability. This structural parameter modification prevents excessive chain entanglement and maintains stable rheological properties over time.
Solution Approach 2:
The patent creates a composite polymer system by copolymerizing cyclocarbonate group-containing (meth)acrylate monomers with other compatible monomers in specific ratios. This composite approach balances the high polarity and solubility benefits of cyclocarbonate groups with the viscosity stability provided by the copolymer structure, preventing excessive thickening during storage.
2Reliability
If cyclocarbonate group-containing (meth)acrylate monomer is polymerized to obtain polymer with cyclocarbonate group on side branch, then the polymer has good transparency and viscosity, but faint may be generated during printing
Solution Approach 1:
The patent optimizes the molecular weight and side chain structure parameters of the polymer to prevent faint generation during printing. By controlling the cycloaliphatic hydrocarbon group size (3-8 carbon atoms) and polymer composition, the patent achieves optimal balance between transparency, viscosity, and print quality, preventing the formation of faint defects.
3Illumination intensity
If polymer having cyclocarbonate group on side branch is applied, then the polymer is excellent in transparency and viscosity, but the viscosity may be slightly increased during use under severe condition
Solution Approach 1:
The patent modifies the polymer structure by introducing cycloaliphatic hydrocarbon side chains with 3-8 carbon atoms, which provide optimal balance between transparency and viscosity stability. The cyclic structure maintains high light transmission while the specific chain flexibility prevents excessive viscosity increase under severe conditions.
Solution Approach 2:
The patent employs copolymerization to create a composite polymer system that combines the transparency benefits of cyclocarbonate groups with the viscosity stability of copolymer structures. This composite approach maintains excellent optical properties while resisting viscosity increase during use under severe conditions.
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 polymer maintains stable viscosity over time, preventing defects in applications such as paints and inks, ensuring consistent performance and quality.
Implementation Method 1
it may be polymerized with another monomer or oligomer to obtain a polymer to which cyclocarbonate group is introduced
Data Source
AI summary
A method of producing a polymer, including a step of subjecting a monomer mixture to radical polymerization, the monomer mixture including a cyclocarbonate group-containing (meth)acrylate monomer (A) represented by the following formula (1) and di(meth)acrylate monomer (B) represented by the following formula (2), wherein a content of the di(meth)acrylate monomer (B) is 3 weight % or lower with respect to a total of a content of the monomer (A) and the content of the monomer (B),wherein R1 represents hydrogen atom or methyl group, R2 represents an alkyl group having a number of carbons of 2 to 10, and X is 0 or 1,wherein R3 represents hydrogen atom or methyl group, R4 represents an alkyl group having a number of carbons of 2 to 10, and X is 0 or 1.