Animal glue properties

After introduction of emulsion-based adhesives, and later hot melts, animal glues were displaced in part or completely from their traditional uses, but they have retained a relatively small but significant share of the adhesive market due to their unique properties. It is estimated that U.S. consumption of animal glues is in the range 30 to 35 million pounds, and production worldwide is about 90 million pounds annually (W.E. Blair, Swift Adhesives, private survey, 1992). 

Because of their amphoteric properties, animal glues possess electrical charges which unmodified or with suitable modification by simple chemical additives are highly effective as colloidal flocculents and as protective colloids in such applications as paper manufacturer, rubber compounding, ore and metal refining, and for water and industrial waste-water treatment. 

Animal glues continue to be used for the production of book and wooden stick matches. Efforts to replace it have been without success. The production of matches is dependent on the presence of the animal glue in the head. It not only serves as the binder for the ignition chemicals, combustible fillers, and inert materials, but also because of its air-entraining properties ensures a match head of proper density and burning characteristics. 

Uses Defoamer for latex/rubber applies, esp. monomer stripping, acrylic, PVAc, NBR, SBR, PVC, adhesives, coatings, paper mtg. food pkg. adhesives, paper, animal glue, cellophane Regulatory FDA 21 CFR 175.105,176.210,176.200,177.1200,178.3120 Properties Straw-colored opaque liq. emulsitiable in water sp.gr. 0.89 dens. 7.58 Ib/gal vise. 800 cps pour pt. 9 C flash pt. (PMCC) 93 C 100% act. 

Uses Defoamer for lafexes (SBR, NBR, acrylic, vinyl acrylic), food-con-faef adhesives/coafings/paper food pkg. cellophane, animal glue Regulatory FDA21CFR 175.105,176.200,176.210,177.1200,178.3120 Properties Sfraw-colored opaque liq. disp. in water sp.gr. 0.92 dens. 

Chem. Descrip. p-Chloro-m-cresol CAS 59-50-7 EINECS/ELINCS 200-431-6 Uses Preservative for latex coatings, emulsions, adhesives, starch- and casein-based systems food pkg. adhesives, animal glues Features Less active in highly alkaline systems may cause yellowing Regulatory EDA 21CER 175.105,178.3120 Properties Powd. 100% act. 

Synonyms Carbamodithioic acid, cyano-, disodium salt Cyanodithioimidocarbonate, disodium Imidocarbonic acid, cyanodithio-, disodium salt Empin cal C2N2Na2S2 Properties Orangish powd. m.w. 162.1 Uses Antimicrobial in cane-sugar and beet-sugar mills in food-pkg. adhesives slimicide in food-contact paper/paperboard preservative in food-contact animal glues Regulatory FDA 21 CFR 173.320, 175.105, 176.300, 178.3120, 181.30... 

Synonyms Phenol, pentachloro-, potassium salt Potassium pentachlorophenate Empincal CeHCUO K Properties M.w. 305.42 Toxicology TSCA listed Uses Preservative in food-pkg. adhesives and animal glues preservative for defoamers in food-contact coatings and paper/paperboard slimicide in food-contact paper/paperboard in closure-sealing gaskets for food containers Regulatory FDA 21CFR 175.105, 176.200, 176.210, 176.300, 177.1210, 178.3120, 181.30... 

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