for use with the manufacture of glass fiber composites binders useful in fiberglass insulation products generally require a low viscosity in the uncured state yet possess characteristics so as to form a rigid thermoset polymeric bond of the glass fibers when cured a low binder viscosity in the uncured state is required to allow the glass fibers to bind correctly also viscous binders commonly tend to be tacky or sticky and hence they lead to the accumulation of fiber on the forming chamber walls this accumulated fiber may later fall onto the collected fibers causing dense areas and product problems a binder which is rigid and insoluable when cured is required so that for example a finished fiberglass thermal insulation product when compressed for packaging and shipping will recover to its as made vertical dimension when installed in a building water is used as a diluent with the polymer forming components to form a binder from among the many thermosetting polymers numerous candidates for suitable hermosetting fiberglass binder resins exist agricultural based derivatives with appropriate modifications can make suitable precursors from which binder resins can be synthesized in one embodiment a binder resin is synthesized by combining an agricultural isolate with an appropriate compound having curing and adhesive properties in another embodiment a binder resin is synthesized by combining a vegetable protein with an appropriate compound having curing and adhesive properties in an alternate embodiment a binder resin is synthesized by combining a vegetable protein with one or more formaldehyde free compounds having desirable curing and adhesive properties as used herein u201c ff u201d means u201c formaldehyde free u201d since formaldehyde exists in nature ff as used herein means that exogenous formaldehyde is not added to the binder resin that is not to say however.