Formaldehyde-starch mixture

Formaldehyde Gelatin or Glutofom. See under Formaldehyde-Starch Mixture... 

Formaldehyde-Starch Mixture is, accdg to Hackh s (1944), P 53 L, an antiseptic powder amyloform, used like iodoform. He calls (p 381-R) the product of reaction of formaldehyde starch glutol, while the name of glutol or gluloform is given in CondChemDict (1961), p 540-L to product obtd by the action of formaldehyde gelatin. This product exists as a clear transparent mass which may be pulverized or a white to yel powder. It is insol in oold w but sol in hot w, under pressure... 

Glutol or Glutoform. See under Formaldehyde-Starch Mixtures, this Vol, p F167... 

Mixed Glues. Starches and dextrins also are used in combination with other raw materials in adhesives. For example, the resistance to water of starch-based adhesives can be improved by the addition of melamine-formaldehyde or urea-formaldehyde resins. Mixtures of starch-based adhesives or dextrin-based adhesives with synthetic resin dispersions are also used. 

Suggested industrial uses of carbohydrate xanthates, apart from the cellulose Viscose process, include the flotation of minerals and the production of plastics. Two patents by Brown and his associate claim an effective purification of both iron ore and silvinite ore by froth-flotation processes employing, for example, sodium starch xanthate, pine oil, and a suitable amine. Silberstein obtained plastic masses from mixtures of sodium dextrin xanthate with urea, formaldehyde, or glyceritol. Starch xanthate has been suggested as a dispersing, wetting, and adhesive ma-... 

Perisic-Janjic, Petrovic, and Hadzic described a method for the quantitative analysis of hydrophobic vitamins K3, K4, and K5 by thin-layer chromatography on starch, cellulose impregnated with paraffin oil, and talc (unimprcgnated) using a mixture of water-dioxane-acetone—formaldehyde (85 20 15 25, v/v/v/v) as the mobile phase (Table 1). 

Soluble starch may act not only as the wall to encapsulate the core alone, but it may also form a film afler mixing with gum arabic. Microcapsules prepared from a mixture of PVA, gelatin and soluble starch possess a very hard wall after being soHdified by formaldehyde solution, but such microcapsules are too large to be co-deposited. 

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