Wood Preservative Composition Stabilizer
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Solution Overview
Problem
Existing wood preservative compositions face stability issues due to disruptive substances from wood or cellulosic materials, leading to reduced penetration over time, which affects the service life of treated wood.
Innovation Solution
Incorporating a cationic polymer as a stabilizer in the wood preservative composition, along with biocidal agents like micronized zinc or copper, to maintain the stability and penetration effectiveness of the preservative even after multiple applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If treatment composition is repeatedly exposed to wood or cellulosic material during industrial treatment, then the treatment composition becomes aged and its penetration ability deteriorates, but continuing to use the same composition increases productivity and reduces cost
Solution Approach 1:
The patent removes disruptive substances from the treatment composition after each treatment cycle through filtration or replacement, preventing their accumulation. This extraction of harmful components maintains the penetration ability of the preservative while allowing the composition to be reused multiple times, resolving the contradiction between reliability and duration of action.
Solution Approach 2:
The patent modifies the chemical parameters of the treatment composition by adjusting pH levels, adding stabilizing agents, or replenishing active ingredients to counteract the aging effect. These parameter changes restore the penetration ability of the preservative, enabling the composition to maintain effectiveness over extended use periods.
2Stability of the object's composition
If cationic polymers are added to stabilize anionic dispersion phases, then stability is improved, but the complexity of the composition increases
Solution Approach 1:
The patent introduces cationic polymers as intermediary substances that mediate between the anionic dispersion phase and disruptive substances. These polymers act as stabilizing agents that prevent agglomeration and settling without fundamentally altering the core composition, thus improving stability while minimizing added complexity.
Solution Approach 2:
The patent creates a composite preservative composition by combining cationic polymers with anionic dispersion phases containing biocides and other active ingredients. This composite structure leverages the complementary properties of oppositely charged components to achieve enhanced stability while maintaining the functional effectiveness of the preservative system.
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 use of cationic polymers and biocidal agents ensures that the wood preservative composition retains its ability to penetrate wood substrates effectively, preventing agglomeration and separation, thus extending the service life of treated wood.
Implementation Method 1
The stability of systems with dispersants and emulsifiers is a delicate balance of steric and electrostatic mechanisms. Any significant changes in pH and/or solution charge can irreversibly disrupt this stability.
Implementation Method 2
Unexpectedly, cationic polymers, enzymes, organic polymers and quaternary ammonium compounds have been found that are not only compatible with anionic dispersion and/or emulsion phases but are also very effective at stabilizing these phases against charge fluctuations during subsequent treatment cycles
Implementation Method 3
Wood or other cellulosic material is charged into the autoclave and the autoclave is then flooded with treatment composition. Combinations of vacuum and pressure are applied to achieve the required penetration of treatment composition into the wood or other cellulosic material.
Implementation Method 4
The stability of systems with dispersants and emulsifiers is a delicate balance of steric and electrostatic mechanisms
Data Source
AI summary
The present invention provides wood preservative composition containing a dispersed and/or emulsified phase comprising a wood preservative component; and a stabilizer. The stabilizer is a cationic polymer, an enzyme, organic polymer, quaternary ammonium compound and/or a mixture thereof. Also provided is a method of preserving wood or other cellulosic material which comprises applying to the wood or other cellulosic material.