Phosphonium cationic starches

Non-gelatinizing phosphonium starch ethers were obtained by treating starch with 2-chloroethyltributylphosphonium chloride.1626 Allyltriphenylphosphonium bromide has been used to produce phosphonium cationic starches.1627... 

Quaternary ammonium alkyl ethers are prepared similarly an alkaline starch is reacted with a quaternary ammonium salt containing a 3-chloto-2-hydtoxyptopyl or 2,3-epoxyptopyl radical. Alternatively, such derivatives can be prepared by simple quaternization of tertiary aminoalkyl ethers by reaction with methyl iodide. Sulfonium (107) and phosphonium (108) starch salts have also been prepared and investigated. Further work has explained the synthesis of diethyl aminoethyl starch (109) as well as the production of cationic starches from the reaction of alkaline starch with... 

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