a penetrating concentrate containing a biocidal amount of a biocide uses a penetrating carrier vehicle containing an emulsifiable copolymer of a cyclic diene and a polymerizable , unsaturated glyceride . for biocides , such as iodopropargyl carbamate , which otherwise requires use of significant amounts of co - solvent to disperse , is directly soluble in the copolymer thereby eliminating or at least substantially reducing the need for co - solvents to assure stability of the biocide in the formulation . the concentrate also exhibits a low level of volatile organics .