Abstract: A broad spectrum, non-toxic, microbiocidal composition effective in killing or inhibiting the growth of a wide variety of microorganisms including viruses, bacteria, yeasts, molds and fungi and algae, that includes a compound of the formula: ##STR1## wherein: R is alkyl, aryl, aralkyl and alkaryl groups including, but not limited to, straight chain, branched chain or cyclic alkyl groups having from 1 to 24 carbon atoms, polyoxyethylene or polyoxypropylene having from 2 to 32 ethylene oxide or propylene oxide units respectively, alkyl phenoxy polyoxyethylene containing 2 to 32 ethylene oxide units, alkyl phenoxy polyoxyethylene containing ethylene oxide units and 1 to 24 carbon atoms in the phenolic alkyl chain, and polyhydroxy compounds, including but not limited to, ethylene glycol, glycerol, or sorbitol.

Abstract: A composite reinforced plastic pipe having an integral bell end and method for making the same are disclosed wherein the composite pipe has a resin impregnated surfacing veil liner, a first resin impregnated continuous fiberglass strand reinforced layer coaxial along the inner liner, a sand-resin core layer formed along the cylindrical portion of the pipe but not on the bell end, a resin impregnated surfacing mat formed coaxially along the length of the exposed first fiberglass strand reinforced layer on the bell end and along the core layer, and an outer resin reinforced roving layer formed coaxially along the full length of the pipe, the composite pipe being cured to form a high strength pipe having uniform radial stiffness and improved resistance to water migration.

Abstract: A composite reinforced plastic pipe and method of making the same are disclosed wherein a resin impregnated surfacing mat is formed into a tubular inner liner on a mandrel or the like, a plurality of resin impregnated continuous fiberglass strands are helically wound upon the inner liner to form an inner layer, a sand-resin composition is applied onto the inner layer to form a tubular core, and an outer layer of resin impregnated continuous fiberglass strands are helically wound upon the tubular core whereafter the composite pipe is cured to provide a pipe having high resistance to internal and external pressures.

Abstract: A composite reinforced plastic pipe having an integral bell end and method for making the same are disclosed wherein the composite pipe has a resin impregnated surfacing veil liner, a first resin impregnated continuous fiberglass strand reinforced layer coaxial along the inner liner, a sand-resin core layer formed along the cylindrical portion of the pipe but not on the bell end, a resin impregnated surfacing mat formed coaxially along the length of the exposed first fiberglass strand reinforced layer on the bell end and along the core layer, and an outer resin reinforced roving layer formed coaxially along the full length of the pipe, the composite pipe being cured to form a high strength pipe having uniform radial stiffness and improved resistance to water migration.