Starch allyl ether

Although they lack commercial importance, many other poly(vinyl acetal)s have been synthesized. These include acetals made from vinyl acetate copolymerized with ethylene (43—46), propylene (47), isobutylene (47), acrylonitrile (48), acrolein (49), acrylates (50,47), allyl ether (51), divinyl ether (52), maleates (53,54), vinyl chloride (55), diallyl phthalate (56), and starch (graft copolymer) (47). 

Special methods have been developed for such ionic compounds as sulfobutyl ethers and cationic starches.To identify the substituted position from typical shifts in mass spectra, it is important to avoid coincidence of the mass contribution of functional groups as, for example, with propyl and acetyl. For instance, glucan allyl ethers cannot be hydrolyzed directly, since the 2-O-allyl group forms an intramolecular 6-membered cyclic adduct with the carbenium ion formed during hydrolysis. 

Sodium DVB/acrylates copolymer Sodium hyaluronate Sodium polyacrylate starch Sodium polymethacrylate Sodium polystyrene sulfonate Sodium PVM/MA/decadiene crosspolymer Sodium styrene/acrylates copolymer Sodium tauride acrylates/acrylic acid/acrylonitrogens copolymer Soluble collagen Starch/acrylates/acrylamide copolymer Starch diethylaminoethyl ether Steareth-10 allyl ether/acrylates copolymer Stearylvinyl ether/MA copolymer ... 

Polyglyceryl-3 laurate thickener, silicone emulsification Ceteth-2 Steareth-30 thickener, silk screen printing inks Ethyl hydroxyethyl cellulose thickener, skin care Acrylates/beheneth-25 methacrylate copolymer Acrylates/C10-30 alkyl acrylate crosspolymer Bisisostearamidopropyl ethoxyethyl dimonium chloride Cetearyl octanoate Hydroxypropyl guar hydroxypropyl trimonium chloride Hydroxypropyl starch phosphate Oleamidopropyl betaine PEG-90 diisostearate Sodium ceteth-13 carboxylate Sodium cocoyl hydrolyzed rice protein Sodium tauride acrylates/acrylic acid/acrylonitrogens copolymer Stearamide DEA Steareth-10 allyl ether/acrylates copolymer... 

Numerous ethers of cellulose, starch, and bacterial dextran are of established or potential industrial importance. (See also Chapter XII.) Treatment of the polysaccharides with alkali and methyl chloride, ethyl chloride, benzyl chloride, ethylene oxide (or ethylene chlorohydrin), sodium chloro-acetate, and allyl bromide gives, respectively, the methyl, ethyl, benzyl, hydroxy ethyl, carboxy methyl, and allyl ethers. The cellulose derivatives... 

C, whereas the com starch derivative only turned brown at this temperature. Further allylation led to diallyl ethers.748-752 For this purpose, an acetone solution of starch acetate in a 50% solution of NaOH containing allyl bromide was boiled or heated in an autoclave at 80 °C. These procedures were then improved by using either butanone and KOFI753 or 1,4-dioxane and NaOH.754 Di-O-allyIstarch is a soft, gummy product that is soluble in most of organic solvents except for aliphatic hydrocarbons. This solubility is lost after exposure of diallyl starch to air.748 It can also be hardened by the addition Co(II) octanoate or Co(II) naphthenate.755... 

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