Intercol has some products that can be biocide free, being dry when transported and those can be mixed with water right before end usage. The water in many products enables organisms to grow and to spoil waterbased products. This problems can be overcome with shipping dry powders.
Starch, protein and VAE copolymers
Starch, protein and VAE copolymers are available in dry formulations. Even de VAE copolymers can be biobased via the mass-balance method of Redcert.