Benzoate Stabilized Peroxide Hardener for Fastening Systems
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Solution Overview
Problem
Existing fastening systems using peroxide-based hardeners face challenges with phthalates, which are difficult to process, pose health hazards, and result in trade restrictions, while water-based stabilizers can disrupt the mixing process and reduce bond strength.
Innovation Solution
The use of ethylene glycol dibenzoate and diethylene glycol dibenzoate as phlegmatizers with dibenzoyl peroxide in the hardener component eliminates the need for phthalates and water, allowing for stable storage and easy processing, including filling into glass cartridges without waste, and maintains high temperature stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phthalates are used as stabilizers in peroxide-based hardeners, then storage stability is improved, but health hazards and trade restrictions worsen
Solution Approach 1:
The patent changes the chemical parameter of the stabilizer from phthalates to benzoates (specifically ethylene glycol dibenzoate and diethylene glycol dibenzoate). This parameter change maintains the stabilizing function while eliminating the harmful effects and trade restrictions associated with phthalates.
Solution Approach 2:
The patent replaces problematic phthalate stabilizers with benzoate stabilizers that have shorter regulatory concerns and no trade restrictions. This substitution allows the product to be freely traded without the bureaucratic burden associated with phthalate-containing products.
2Reliability
If phthalates are used as stabilizers in peroxide-based hardeners, then storage stability is improved, but processing difficulty worsens
Solution Approach 1:
The patent changes the chemical parameter of the stabilizer from phthalates to benzoates, which have different physical and chemical properties. The benzoates provide comparable stabilization while being easier to process during manufacturing and cartridge filling operations.
3Reliability
If water is used as a stabilizer in hardener components, then storage stability is improved, but mixing performance and bond strength worsen
Solution Approach 1:
The patent changes the physical state parameter of the stabilizer from aqueous (water-based) to organic (benzoate-based). This parameter change eliminates the water-related problems of disrupted mixing and reduced bond strength while maintaining storage stability through the chemical stabilizing action of the benzoates.
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 solution provides a safe, efficient, and waste-free fastening system that is free from health hazards and trade restrictions, ensuring strong anchoring without the issues associated with phthalates and water-based stabilizers, and maintains stability across varying temperatures.
Implementation Method 1
Radical-curing resin components are widely used. Consequently, a corresponding hardener component typically contains a radical initiator, especially in the form of peroxides, to enable the resin component to cure.
Implementation Method 2
the hardener component contains other components/compounds that enable stable storage not only of the hardener component but ultimately also of the entire fastening system. Such additional compounds, usually present at least in the hardener component, can be fillers and/or phlegmatizing agents.
Data Source
AI summary
The invention relates to a fastening system comprising two separate components (A) and (B). Component (A) contains at least one resin, while component (B), which acts as a hardener, contains at least one peroxide and at least one benzoate. The invention further relates to the use of such a fastening system, for example, for inserting anchoring elements into holes or crevices, particularly drill holes and/or concrete holes. A further object of the present invention is thus a method for fastening anchoring elements in holes or crevices. Likewise, the use of at least one benzoate for producing the fastening system according to the invention is a further object of the present invention.