Solid Salt Stabilizer for Halogenated Polymers
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Solution Overview
Problem
Halogen-containing polymers, such as PVC, undergo undesirable decomposition and color changes due to thermal stress, leading to instability and usability issues, and existing stabilizer compositions with perchlorate salts face handling challenges and limited effectiveness.
Innovation Solution
Development of solid salt preparations containing a mixture of halogen-containing oxyacid salts and solvents, where the salt is soluble in the solvent at specific temperatures, enabling improved handling and stabilization of halogen-containing polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If perchlorate salts are used as stabilizer compositions, then the thermal stability of halogen-containing polymers is improved, but the handling safety deteriorates due to explosion risks
Solution Approach 1:
The patent introduces a carrier material as an intermediary substance that physically separates and dilutes the perchlorate salt crystals, reducing the concentration of the harmful oxidizing agent while maintaining its stabilizing function. The carrier material acts as a mediator that enables safe handling by reducing the risk of explosion while preserving the thermal stability benefit.
Solution Approach 2:
The patent changes the physical state and concentration parameters of the perchlorate salt by incorporating it into a carrier material matrix. This transforms the pure crystalline form (high risk) into a diluted dispersed form (lower risk), thereby modifying the safety parameters while maintaining the stabilizing effectiveness.
2Reliability
If crystalline perchlorate salts are used, then the stabilizing effect is enhanced, but the handleability deteriorates due to crystallite formation
Solution Approach 1:
The carrier material serves as an intermediary that prevents direct contact and aggregation of crystalline perchlorate salts. It physically separates the crystallites, making them less visible and less prone to cause handling issues, while still allowing the stabilizing function to be effective.
Solution Approach 2:
The patent changes the physical appearance and distribution parameters of the perchlorate crystals by dispersing them within a carrier matrix. This transforms the concentrated crystalline structure into a dispersed morphology, improving handleability while maintaining stabilizing effectiveness.
3Ease of operation
If carrier materials are added to stabilizer compositions, then the handleability is improved, but the stabilizer effect deteriorates due to dilution
Solution Approach 1:
The patent optimizes the concentration parameter of the perchlorate salt within the carrier material matrix, maintaining a sufficient level to ensure effective stabilization while keeping the overall composition safe and manageable. The carrier material is used in controlled amounts to balance handleability and stabilizer effectiveness.
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 solid salt preparations enhance the thermal stability and handleability of halogen-containing polymers, reducing the risks associated with perchlorate salts and providing a more effective stabilization system.
Implementation Method 1
the salt of a halogen-containing oxyacid or the mixture of two or more salts of halogen-containing oxyacids in the solvent or the mixture of two or more solvents at 20 ° C to at least 0.1% by weight, based on the solvent or the mixture of two or more solvents, is soluble
Data Source
AI summary
The invention relates to a solid salt preparation with an improved usability, which contains a mixture consisting of salt of a halogen-containing oxy acid and of a solvent. The invention also relates to a method for producing salt preparations of the aforementioned type and to their use, particularly in stabilizer compositions for halogen-containing polymers.