Flame-Retardant Polymers from Polyols and Phosphorus
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Solution Overview
Problem
The challenge lies in finding alternatives to petroleum-based polymers that can meet specific performance standards, particularly in plastics that require flame-retardancy, as alternatives are limited due to challenges in satisfying these standards and the desire to transition from non-renewable resources.
Innovation Solution
A process involving the reaction of a polyol with a phosphorus-containing material to form a phosphorus-functionalized polyol derivative, which is then reacted with a polyacid to create a flame-retardant polymer, where phosphorus is chemically bound to the polymer chain, thereby imparting inherent flame-retardancy characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum-based polymers are used, then flame-retardant performance can be achieved, but reliance on non-renewable resources increases
Solution Approach 1:
The patent changes the chemical composition parameters of the polymer by incorporating phosphorus-containing groups into the polymer chain structure. This substitution modifies the material's flammability characteristics while maintaining structural integrity, allowing renewable feedstocks to achieve flame-retardant performance equivalent to petroleum-based polymers.
Solution Approach 2:
The patent creates composite polymer structures by combining renewable polymer chains with phosphorus-containing functional groups. This composite approach integrates the renewable nature of the base polymer with the flame-retardant properties of phosphorus compounds, achieving both sustainability and fire safety requirements.
2Reliability
If phosphorus additives are used post-polymerization, then flame-retardancy is achieved, but additional processing steps and material compatibility issues arise
Solution Approach 1:
The patent applies preliminary action by incorporating phosphorus-containing groups directly into the polymer chain during the polymerization process itself, rather than adding phosphorus additives after polymerization is complete. This upfront integration eliminates subsequent processing steps and ensures uniform distribution of flame-retardant properties throughout the material structure.
Solution Approach 2:
The patent merges the polymerization process with the flame-retardant functionality integration by combining monomer synthesis and polymer chain formation into a single unified process. This consolidation eliminates the need for separate additive incorporation steps, reducing manufacturing complexity while ensuring homogeneous flame-retardant performance.
3Adaptability or versatility
If alternatives to petroleum-based polymers are developed, then renewable resource usage increases, but satisfaction of plastics performance standards becomes more difficult
Solution Approach 1:
The patent modifies the chemical parameters of renewable polymers by introducing phosphorus-containing functional groups during polymerization. This parameter change directly addresses flammability requirements specified in performance standards like UL 94, enabling renewable polymers to meet regulatory compliance thresholds that previously limited their applicability.
Solution Approach 2:
The patent employs readily available phosphorus-containing compounds as reactive intermediates that can be easily incorporated into the polymer structure. These simple, accessible chemical building blocks enable the modification of renewable polymers to achieve standard compliance without requiring complex or expensive specialized materials.
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 approach allows for the production of flame-retardant polymers from renewable resources, enabling compliance with plastics flammability standards like UL 94, while reducing reliance on non-renewable petroleum feedstocks and avoiding the need for phosphorus additives post-polymerization.
Implementation Method 1
reacting a polyol with a phosphorus-containing material to produce a phosphorus-functionalized polyol derivative
Implementation Method 2
reacting the phosphorus-functionalized polyol derivative with a polyacid to form the flame-retardant polymer. Phosphorus is chemically bound to a polymer chain of the flame-retardant polymer
Data Source
AI summary
A process for the production of a flame-retardant polymer is disclosed. The process includes reacting a polyol, for example glycerol, with an organophosphorus monochloride material to produce a phosphorus-functionalized polyol derivative. The process further includes reacting the phosphorus-functionalized polyol derivative with a polycarboxylic acid to form the flame-retardant polymer, wherein phosphorus is chemically bound to a polymer chain of the flame-retardant polymer.