Hydrocarbon Resin Odor Reduction via Cation Polymerization
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Solution Overview
Problem
The production of C5 and C9 oil fractions, essential for hydrocarbon resin, is decreasing, leading to material shortages and odor issues in hydrogenated hydrocarbon resins, particularly in sanitary products, due to unreacted materials and solvents, which complicates the manufacturing process and limits consumer acceptance.
Innovation Solution
A method involving the polymerization of a C6-C20 olefin with a diolefin and a cation catalyst, followed by hydrogenation, to produce a hydrocarbon resin that obviates the need for a C3 olefin liquefaction process, reducing odor and improving adhesion properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If C5 and C9 oil fractions are used as main materials for hydrocarbon resin, then excellent adhesive properties and heat resistance are achieved, but material supply is decreasing and production costs are increasing
Solution Approach 1:
The patent changes the chemical composition parameters by replacing C5/C9 oil fractions with alternative feedstocks (C3 olefin, C4 olefin, or naphtha) and adjusting the hydrogenation degree to control molecular weight and adhesive properties. This allows maintaining performance while securing material supply
Solution Approach 2:
The patent creates composite hydrocarbon resins by combining different feedstock components (e.g., C3 olefin with C4 olefin, or naphtha fractions) to achieve desired adhesive properties while diversifying material sources and reducing dependency on scarce C5/C9 oil fractions
2Reliability
If hydrogenated hydrocarbon resin is used for sanitary products, then heat resistance and UV resistance are improved, but odor is generated from unreacted materials and solvents
Solution Approach 1:
The patent removes harmful components by optimizing the hydrogenation process to completely react unreacted materials and by selecting solvent-free or low-solvent processing methods, thereby eliminating the source of odor while preserving heat resistance
Solution Approach 2:
The patent adjusts the hydrogenation degree and molecular weight parameters to optimize the balance between heat resistance and odor reduction, creating resins with sufficient cross-linking for thermal stability but with molecular structures that minimize volatile organic compound emission
3Adaptability or versatility
If metallocene catalyst is used for copolymerization of C3 monomer and DCPD, then hydrocarbon resin can be produced, but manufacturing cost increases and yield decreases
Solution Approach 1:
The patent replaces expensive metallocene catalysts with conventional, inexpensive catalyst systems (such as Ziegler-Natta or simple acid catalysts) that can be easily handled and do not require special protection from oxygen and water, significantly reducing manufacturing costs while achieving sufficient copolymerization
Solution Approach 2:
The patent uses conventional catalysts as intermediaries that facilitate copolymerization without requiring the sophisticated metallocene structures, enabling the same chemical transformation through simpler, more economical catalytic mechanisms
4Adaptability or versatility
If C3 oil fraction is used as olefin, then hydrocarbon resin can be produced, but additional liquefaction process and high-pressure reactor are required
Solution Approach 1:
The patent changes the physical state parameter of the feedstock by selecting liquid C6-C20 olefins instead of gaseous C3 olefin, eliminating the need for liquefaction equipment and high-pressure reactors while maintaining copolymerization capability
Solution Approach 2:
The patent uses readily available liquid olefins from standard petrochemical streams that can be handled with conventional equipment, avoiding the need for specialized high-pressure apparatus and complex process design
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 ensures a high yield and real-world application of hydrocarbon resin with reduced odor, enhanced adhesion, and improved compatibility with rubber, suitable for various adhesive applications.
Implementation Method 1
preparing a polymer by polymerizing the mixture of S1 through the addition of a C6-C20 olefin and a cation catalyst
Implementation Method 2
hydrogenating the polymer of S2 through the addition of a hydrogenation catalyst
Data Source
AI summary
This invention relates to a hydrogenated hydrocarbon resin and a method of preparing the same, wherein the preparation process is simplified, material supply problems can be solved, and the hydrogenated hydrocarbon resin can be prepared using a catalyst, which is inexpensive, has a low odor and is easy to handle, thereby realizing a yield and a preparation process that enable real-world application thereof. The hydrogenated hydrocarbon resin prepared by the method of the invention has excellent compatibility and a low specific viscosity, and can thus be efficiently used as a tackifier or an adhesive in a variety of fields.