Chlorinated Polyolefin Resin Solubility in Alcohol-Based Solvents
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Chlorinated polyolefin resins exhibit low solubility in alcohol-based solvents, which is a challenge for adhesion and printing applications, particularly in gravure and flexography, where higher polarity solvents are increasingly used.
Innovation Solution
A chlorinated polyolefin resin with specific infrared spectroscopy peak area ratios (A/B × 100 ≥ 10%, C/B × 100 between 30 to 80%, and A/C × 100 ≥ 30%) is developed, incorporating hydroxyl, methylene, and carbonyl groups to enhance solubility and adhesion, achieved through chlorination reactions with controlled conditions and stabilizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chlorinated polyolefin resin is used with aromatic solvents like toluene, then good solubility is achieved, but environmental problems arise due to aromatic solvent usage
Solution Approach 1:
The invention changes the chemical parameters of the chlorinated polyolefin resin by controlling the peak area ratios of specific functional groups (hydroxyl, carbonyl, and methylene groups) as measured by infrared spectroscopy. By optimizing these parameter ratios, the resin achieves high solubility in non-aromatic solvents without requiring environmentally harmful aromatic solvents like toluene
Solution Approach 2:
The invention replaces expensive and harmful aromatic solvents with cheaper, environmentally friendly alternatives such as alcohol-based solvents. This substitution maintains solubility performance while eliminating the environmental pollution associated with aromatic solvent disposal
2Reliability
If oxidation treatment is applied to increase polarity, then solubility in nonaromatic solvents improves, but adhesion to polyolefin resin deteriorates
Solution Approach 1:
The invention applies local quality by introducing specific functional groups (hydroxyl, carbonyl, and methylene groups) in controlled proportions rather than uniform oxidation. By locally modifying the resin structure with specific functional groups at controlled concentrations, the patent achieves both improved solubility in nonaromatic solvents and maintained adhesion to polyolefin resin
Solution Approach 2:
The invention creates a composite functional structure within the chlorinated polyolefin resin by combining multiple functional groups (hydroxyl, carbonyl, and methylene groups) in specific ratios. This composite approach allows the resin to simultaneously exhibit good solubility characteristics and strong adhesion properties that single-functional modifications cannot achieve
3Reliability
If graft copolymerization with acrylic monomer is performed, then solubility in nonaromatic solvents improves, but adhesion to polyolefin resin deteriorates
Solution Approach 1:
The invention changes the functional group composition parameters of the resin by controlling peak area ratios in the infrared spectroscopy spectrum. By adjusting the proportions of hydroxyl, carbonyl, and methylene groups through controlled chlorination rather than graft copolymerization, the patent achieves improved solubility while preserving adhesion to polyolefin substrates
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 resin demonstrates improved solubility in alcohol-based solvents and adhesion to polyolefin substrates, preventing dehydrochlorination and maintaining favorable adhesion and cohesion properties.
Implementation Method 1
a solvent composition comprising an alcohol-based solvent and a chlorinated polyolefin resin having good solubility in the solvent composition
Implementation Method 2
A is an area of a peak resulting from hydroxyl groups
Data Source
AI summary
It is an object of the present invention to provide a chlorinated polyolefin resin having favorable adhesion to a polyolefin resin and high solubility in a composition containing an alcohol-based solvent. The present invention provides a chlorinated polyolefin resin that exhibits, in infrared spectroscopy spectrum measurement, a peak area ratio A/B x 100 of 10% or higher, a peak area ratio C/B x 100 of 30 to 80%, and a peak area ratio A/C x 100 of 30% or higher (wherein "A" is the area of a peak resulting from hydroxyl groups, "B" is the area of a peak resulting from methylene groups, and "C" is the area of a peak resulting from carbonyl groups). The present invention also provides an ink composition for gravure printing or flexography that contains the chlorinated polyolefin resin, a printed material obtained using the above composition, and a printing method using the above composition.