Sebacyl chloride

In 50 mL of perchloroethylene is dissolved 1.5 mL of sebacyl chloride 2.2 g of hexamethylenediamine and 4.0 g of sodium carbonate are dissolved in 50 mL water. The aqueous solution is placed carefully on the perchloroethylene solution in a 200-rnL tail-form beaker or similar vessel (Fig. 3.17). A film is immediately formed at the interface. The film is grasped with tweezers and raised as a rope of continuously forming polymer film. The rope is guided over two glass rods with a 1-mm drop. With this setup, speeds up of 5 m/min can be attained for 8 min. 

The polymerization of 1,6-hexanediamine with sebacyl chloride proceeds in the following manner. The italicized H and Cl atoms are removed in this condensation reaction. 

What is the first product produced when a molecule of sebacyl chloride reacts with a molecule of ethylene glycol ... 

Sebaconitrile has been obtained by heating sebacic acid in a stream of ammonia,1 and from sebacamide by pyrolysis 2 3 or by dehydration with phosphorus pentachloride 4 or phosphorus oxychloride.6 Sebacamide has been prepared from ethyl seba-cate6 or sebacyl chloride and ammonia,7 and by heating sebacic acid with urea2i3-8 or ammonium thiocyanate.9... 

Figure 4 presents several plots relating the inherent viscosity of the polymer (which is a measure of molecular weight) to the concentration of sebacyl chloride in the preparation of 6-10 polyamide. The diamine concentration was held constant for each plot. This is a polymerization system from which the polymer precipitates very rapidly. For the unstirred preparations (A) and those with a... 

Preparation of a Polythioester by the Condensation of Sebacyl Chloride with... 

In 1951, Flory reported the condensation reaction of diacid chlorides, e.g. with potassium salts of imides, e.g. the condensation of sebacyl chloride with potassium phthalimide. In this way, A -acyl diimides are formed. Flory pointed out the possibility of forming polymers, when components with higher functionality are used. Poly(imide)s (PI)s from pyromeUitic acid were reported in 1955 by Edwards and Maxwell at DuPont. Tbe diamines used were of aliphatic nature. Later, in addition, aromatic diamines were used. The two major types of Pis are ... 

Interfadal polymerization n. A polymerization reaction that occurs at or near the interfacial surfaces of two immiscible solutions. A simple example is the often-performed demonstration of making nylon thread from a beaker containing a lower layer of a solution of sebacyl chloride in carbon tetrachloride and an upper layer of hexamethylene diamine solution in water. A pair of tweezers is gently lowered through the upper layer, closed on the interfadal layer of polymer, and then drawn upward to pull with it a continuous strand of nylon 6/10. 

Low molecular weight polyanhydrides (4) were obtained by Yoda and Miyakefrom the reaction of terephthalic acid in pyridine with adlpyl and sebacyl chloride in ether or benzene at 25-30 C for four hours. In similar studies poorer yields were obtained when employing aliphatic dlaclds and terephthaloyl chloride. 

Details - Flory reported condensation of sebacyl chloride and potas- Fink, J K, High Performance... 

Sucrose (Fisher Scientific, Fairlawn, N.J.), dibutyltin dichloride (Fisher Scientific, Fairlawn, N.J.), dilaurytin dichloride (Metallomer Labs., Fitchburg, Mass.), diphenyltin dichloride (Ventron, Beverly, Mass.) diethyltin dichloride (Ventron), dioctyltin dichloride (Ventron), terephthaloyl chloride (Aldrich, Milwaukee), sebacyl chloride (Aldrich), and... 

Partial specific volume of poly(phenolphthalein-co-sebacyl chloride)... 

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