Seed Coating Composition with Low Binder Wax Carbohydrate
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Solution Overview
Problem
Existing seed coating compositions face challenges in facilitating the release of hydrophobic and water-insoluble active ingredients, leading to decreased efficacy, while maintaining desirable seed coating properties such as water permeability and germination rates.
Innovation Solution
A seed coating composition with a low polymeric binder content, comprising wax and/or polymeric carbohydrates, which enhances the mobility and bio-efficacy of active ingredients, reducing clumping and improving flowability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic and water-insoluble active ingredients are included in conventional seed coating compositions with high polymeric binder content, then the coating structure is strengthened and water permeability is maintained, but the active ingredients are retained in the coating and released more slowly than required, decreasing bio-efficacy
Solution Approach 1:
The patent changes the key parameter of polymeric binder content from conventional high levels (typically 30-50% or more) to a reduced level of 10% or less by total weight of wax and polymeric carbohydrate together. This parameter change creates sufficient mobility for hydrophobic active ingredients to move through the coating and be released, while the coating maintains its structural integrity through the specific combination of reduced polymeric binder with wax and/or polymeric carbohydrates.
2Productivity
If polymeric binder content is reduced to facilitate active ingredient mobility, then bio-efficacy is improved, but coating structure and water permeability may be compromised
Solution Approach 1:
The patent employs a composite material system consisting of three key components: (1) reduced polymeric binder (10% or less), (2) wax, and (3) polymeric carbohydrates. This composite approach allows the formulation to achieve sufficient active ingredient mobility through reduced polymeric binder while maintaining coating structure integrity and water permeability through the synergistic combination of wax and polymeric carbohydrates, which provide structural support and functional properties.
3Reliability
If conventional seed coating compositions are used, then desirable coating properties are maintained, but clumping and dust emissions occur during processing
Solution Approach 1:
The patent applies parameter changes to the binder system (reducing polymeric binder to 10% or less and specifying particular types such as starch, cellulose, or dextrin) to modify the rheological and surface properties of the coating composition. This results in reduced clumping during seed coating and reduced dust emissions during subsequent handling, while maintaining other desirable coating properties through the complementary wax and polymeric carbohydrate components.
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 composition ensures improved bio-efficacy of active ingredients, maintains desirable seed coating properties like water permeability and abrasion resistance, and reduces dust emissions and clumping, while accelerating the release of hydrophobic insecticides for effective plant protection.
Implementation Method 1
the rise of hydrophobic and/or water insoluble active ingredients brings new challenges for formulators of seed coating compositions
Implementation Method 2
the seed coating itself should have the conventional and desirable seed coating properties, such as water permeability
Data Source
AI summary
The invention is directed to a seed coating composition comprising one or more active ingredients, to a method and use for improving the bio-efficacy of an active ingredient in a seed coating, and to a coated seed. The seed coating composition of the invention further comprises a wax and/or polymeric carbohydrate and wherein said seed coating composition has an amount of polymeric binder excluding wax and polymeric carbohydrate of 10 % or less by total weight of the wax and polymeric carbohydrate together.