Aldehyde-Functionalized Polymer Stability via Salt Additives
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Solution Overview
Problem
Aldehyde-functionalized polymers used in the papermaking industry suffer from instability, leading to short shelf lives and low active concentrations, which increases costs and logistical challenges due to sensitivity to actives concentrations and storage requirements.
Innovation Solution
Incorporating selected inorganic salts and organic additives as stability agents into the polymer formulations at specific concentrations to enhance stability, allowing for increased shelf life and active concentrations without compromising dewatering effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If aldehyde-functionalized polymers are formulated with high actives concentrations to reduce shipping costs and storage space, then manufacturing and shipping costs decrease, but the polymers suffer from instability towards gelling resulting in short shelf lives
Solution Approach 1:
The patent introduces stability agents (inorganic salts such as calcium chloride, magnesium sulfate, or organic additives) as intermediary substances that mediate between the aldehyde-functionalized polymer and water. These agents prevent unwanted gelation reactions while allowing the polymer to maintain high actives concentration, thus resolving the contradiction between concentration and stability.
Solution Approach 2:
The patent changes the chemical environment parameters by adding specific inorganic salts or organic additives that alter the reaction conditions. This prevents premature gelation and allows the formulation to maintain both high actives concentration and extended shelf life by controlling the reactivity parameters.
2Adaptability or versatility
If aldehyde-functionalized polymers are stored for extended periods to accommodate intermittent use and long shipping distances, then adaptability to distribution scenarios improves, but shelf life remains short due to instability
Solution Approach 1:
The patent applies preliminary action by incorporating stability agents into the polymer formulation before storage. This pre-protection mechanism prevents gelation during extended storage periods, enabling the product to maintain stability and functionality throughout long shipping distances and intermittent usage scenarios.
Solution Approach 2:
Stability agents serve as intermediaries that protect the aldehyde-functionalized polymer during storage and transport. These agents prevent premature reactions with water and other contaminants, thereby extending shelf life and enabling adaptability to various distribution scenarios including long-distance shipping and intermittent use.
3Stability of the object's composition
If low actives concentrations are used to achieve acceptable shelf life, then stability improves, but manufacturing costs and shipping costs increase
Solution Approach 1:
The patent changes the formulation parameters by introducing stability agents that allow the system to maintain high actives concentration without sacrificing shelf life. This eliminates the need to dilute the polymer to achieve stability, thereby reducing manufacturing and shipping costs while maintaining acceptable shelf life.
Data Source
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AI summary
The current invention includes a composition having stability additives of selected inorganic salts and/or organic incorporated into an aldehyde-functionalized polymer product. The stability additive can be post added to the finish polymer product, added to the reaction vessel prior to inducing functionalization of the non-functionalized polymer, or added at any stage during the functionalization reaction. Methods for forming the composition and using the composition to produce a cellulosic fiber-based medium are also disclosed