Reference

Conductive aliphatic polyester or polyetherester having units containing phosphonium sulfonate groups

Conductive aliphatic polyester or polyetherester having units containing phosphonium sulfonate groups. Samuelson, Harry V.; Singh, Gurdial (du Pont de Nemours, E. I., and Co., USA). U.S. US 4006123 1 Feb 1977, 11 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08G063-68. NCL: 260075000P. APPLICATION: US 73-403221 3 Oct 1973. DOCUMENT TYPE: Patent CA Section: 39 (Textiles) Conductive N-alkyl polyamides, aliph. polyesters, and polyether esters contg. phosphonium sulfonate groups within the polymer chain or at the chain ends are prepd. and cospun with a nylon or polyester sheath or as a disperse phase in polypropylene to give antistatic fibers. Thus, a soln. of 295 g tetrabutylphosphonium chloride [2304-30-5] and 296 g Na 3,5-bis(methoxycarbonyl)benzenesulfonate [3965-55-7] in 1.5 L H2O was heated 1 hr at 60.degree. to give tetrabutylphosphonium 3,5-bis(methoxycarbonyl)-benzenesulfonate (I) [59514-43-1]. A mixt. of dodecanedioic acid 5550, polyethylene glycol 4640, I 1160, 2-ethyl-2-hydroxymethyl-1,3-propanediol 375, p-toluenesulfonic acid 11, and manganese acetate 11 g was heated 2 h at 200.degree., under N, and polycondensed at 5 torr and 240.degree. to give a polyether ester [59546-96-2] with inherent viscosity 1.0. The polyether ester was spun as 50% core in nylon 66 filaments which were drawn, plied, and bulked using a hot-air jet.In this experiment, several chemicals are used like 59514-50-0 and 59546-53-1 A carpet tufted from the bulked yarn and mock-dyed had static propensity 1.6 kV (detd. by the shuffle test), vs >10 kV for a nylon 66 carpet. .

Increasing the molecular weight of a polyorganosiloxane

Increasing the molecular weight of a polyorganosiloxane. Brown, Eric Davison; Chaffee, Roger George (Dow Corning Corp., USA). Ger. Offen. DE 2559603 21 Apr 1977, 35 pp. Division of Ger. Offen. 2,558,020. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08G077-38. PRIORITY: US 75-537877 2 Jan 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) The mol. wt. of polyorganosiloxanes is increased by mixing C6H6 solns. with a catalyst compn. consisting of a C6H6-sol. organosilicon compd., a quaternary phosphonium compd., an alkali metal hydroxide, and enough water to dissolve the hydroxide, removing most of the water at 30-100.degree., and removing any remaining water at 30-130.degree.. Thus, a soln. of 696 g Bu4PCl [2304-30-5] in 200 mL water was added to a mixt. of 3160 cyclic dimethyl siloxane and 546 g Me3Si-terminated polydimethylsilane of viscosity 20c St, mixed with 92.77 g NaOH in 160 mL water over 2 min, and heated gradually to 40.degree. in vaccuo. After 16 h distn. at 40.degree./75 m and filtration, a crystal-clear, bright yellow polysiloxane with neutralization equiv. 1800 and Na content 0.14% was obtained.