Anionic Polymer Seed Coating for Flowability and Protection
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Solution Overview
Problem
Seed treatments often cause stickiness and tackiness on seed surfaces, leading to flow issues in manufacturing and distribution equipment, and exposure to environmental conditions can degrade active ingredients in seed coatings, affecting their lifespan and activity.
Innovation Solution
A method involving a first seed treatment composition with an anionic polymer and a biological agent, followed by a second composition with polyvalent cations, which reacts to form a polymeric coating that enhances flowability and protects active ingredients from environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seed treatment composition is applied to improve seed protection and agronomic characteristics, then the activity and protection efficacy are improved, but the seed surface becomes sticky and tacky, causing flow problems in manufacturing and planting equipment
Solution Approach 1:
The patent changes the chemical parameters of the seed coating by using anionic polymers with specific molecular weights (10,000 to 1,000,000 Daltons) and controlled charge densities. This parameter optimization allows the coating to provide adequate protection while reducing excessive stickiness that causes flow problems in equipment
Solution Approach 2:
The patent creates a composite seed treatment system combining anionic polymers with complementary materials that have opposing properties. The composite formulation balances protective functions with flowability, where the anionic polymer provides protection while the composite structure prevents excessive tackiness
2Reliability
If seed treatments are applied to provide agronomic protection, then seed protection is improved, but the active ingredients degrade under harsh environmental conditions during storage and distribution
Solution Approach 1:
The anionic polymer forms a flexible protective film or shell around the active ingredients on the seed surface. This thin film barrier protects the embedded active ingredients from degradation by environmental factors such as moisture, UV radiation, and temperature fluctuations during storage and distribution
Solution Approach 2:
The anionic polymer acts as an intermediary between the active ingredients and the harsh external environment. It provides a protective interface that shields the active ingredients from direct exposure to degrading conditions while still allowing the seed to receive necessary environmental inputs for germination
3Reliability
If seed treatments are applied to improve agronomic characteristics, then plant protection is enhanced, but the complexity and expense of manufacturing and distribution equipment increases
Solution Approach 1:
By optimizing the molecular weight and charge density parameters of the anionic polymer, the patent creates a coating that provides adequate protection without requiring complex processing equipment. The parameter-optimized coating can be applied using simpler, more cost-effective manufacturing and planting equipment
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 method produces treated seeds with improved handling properties and extended activity of active ingredients, reducing dust-off and maintaining efficacy during storage and use.
Implementation Method 1
applying a first seed treatment composition comprising an anionic polymer and a biological agent to a seed, thereby producing a wetted seed; and subsequently spraying the wetted seed with a second seed treatment composition comprising one or more polyvalent cations, thereby producing a treated seed having a polymeric coating
Data Source
AI summary
Provided herein are treated seeds and methods for the preparation of treated seeds comprising a biological agent and a polymeric coating.