Tomio Shimizu

Synthesis and properties of 2-alkoxy-N,N-dimethylethylamine N-oxides

Abstract2-Alkoxy-N,N-dimethylethylamines (1) were prepared from the reaction of alkyl chlorides with 2-dimethylaminoethanol in the presence of potassium hydroxide. Amine oxide surfactants 2 were prepared by oxidation of1 with hydrogen peroxide. The surfactants 2 were good foam stabilizers and stable up to 100 C, but decomposed rapidly to vinyl ethers at 150 C.

Design of Effective Shrinking-Proof Modification of Cellulosics by Phosphoryl Amides

In the design of effective shrinking-proof modification of Cellulosics, the factors to be considered including cost, efficiency, durability of shrinking-proof, and effect of the treatment on the fabric properties. A number of finishing of rayon fabrics were performed by the use of crude phosphoryl amides prepared from the reaction of phosphoryl chloride with a saturated solution of ammonia in methanol (method A), from the reaction of ammonia with a solution of phosphoryl chloride (or chloro-phosphazene) in a solvent such as chlorinated alkanes or arenes, and ethers (method B).The most eminent characteristics in the use of the phosphoryl amides prepared by the method A were the more efficiently durable shrinking-proof and fastness against chlorine damage than the case of the method B. The increase in the amount of methoxy-substituted products at high temperatures in the method A caused the decrease in efficiency of shrinking-proof and whiteness of the treated rayon fabrics.Presence of water in methanol afforded hydroxy-substituted products and ammonium phosphate derivatives. However, the crude phosphoryl amides prepared in the presence of a small amount of water gave more desirable shrinking-proof, probably due to the catalytic effect of ammonium phosphate formed for the shrinking-proof. The optimum amount of water in the methanol was about 10%. Sodium borohydride treatment before the shrinking-proof increased the whiteness of the fabrics.