agrimer™ va copolymers

chemistry: VP and VA polymers

agrimer™ va copolymers series include linear random copolymers that form hard, glossy, thermoplastic films. The films are oxygen permeable with good water holding properties, appropriate for seed coatings and leaf adhesion. Agrimer™ va copolymers have good adhesive, cohesive, and binding properties for several substrates and a host of active ingredients. Can be used as a co-dispersant in enhancing solubility/dispersibility of complex active ingredients for improved bio-availability.

Provides excellent survivability of biological materials / living organisms such as rhizobia.

  • linear, random copolymers of vinyl pyrrolidone (VP) and vinyl acetate (VA)
  • family includes both hydrophobic and hydrophilic, thermoplastic, oxygen permeable polymers
  • solubility varies with the proportion of vinyl acetate
  • insoluble in ethers and aliphatic hydrocarbons
  • soluble in water if VP content is greater than 50%
  • increased VA content gives increased hydrophobicity and decreased hygroscopicity, Tg

benefits

  • forms films with a wide range of water resistance properties
  • dusting reduction in coatings
  • uniform films that enhance survival rate of rhizobia
  • adhesive and cohesive properties
  • can enhance hydrophobic active ingredient solubility / dispersibility
  • effective at reducing surface tension of water
  • effective at reducing oil/water interfacial tension

suggested applications

  • seed coatings
  • binders for water dispersible granules
  • film forming agent
  • co-stabilizers in water-based flowable formulations
  • controlled release via co-precipitation with polybasic acids
  • binders in thermal extrusion

 

  

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