Detail of "6792-31-0"

Reference

The effect of absorbed chemicals on the internal motions in poly(tetrafluoroethylene)

The effect of absorbed chemicals on the internal motions in poly(tetrafluoroethylene). Starkweather, Howard W., Jr. (Cent. Res. Dev. Dep., E. I. du Pont de Nemours and Co., Wilmington, DE 19898, USA). Macromolecules, 17(6), 1178-80 (English) 1984. CODEN: MAMOBX. ISSN: 0024-9297. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) Dynamic mech. measurements on PTFE [9002-84-0] showed the loss modulus peaks assocd. with the amorphous g-relaxation (~90°) and the cryst. b-relaxation near room temp. to be unaffected by the presence of adsorbed halocarbons (e.g. C3F6 dimer [13429-24-8] and trimer [6792-31-0], CCl2FCCl2F [76-12-0], CHCl3 [67-66-3]). An addnl. loss peak appeared, usually near 30°, and the modulus was decreased at all higher temps. The a-relaxation, appearing as a peak at 134° in the loss compliance, was shifted to 45-70° in swollen PTFE.

Water- and oil-repellent film

Water- and oil-repellent film. Hagiwara, Tsuneo; Kawaguchi, Takeyuki; Yonemura, Aritami (Teijin Ltd., Japan). Japan. Kokai JP 52094884 9 Aug 1977 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09K003-18. APPLICATION: JP 76-11268 6 Feb 1976. DOCUMENT TYPE: Patent CA Section: 39 (Textiles) Section cross-reference(s): 29 RXR1Si(OR2)3(R = fluoroalkyl, perfluoroalkyl, or perfluoroalkenyl, R1 = C2-10 alkylene, R2 = alkyl, Ph, alkenyl, or aralkyl, X = CH2 or O) is coated on a formed polymer contg. OH groups. Thus, DMF contg. hexafluoropropylene trimer [6792-31-0] and anhydrous K2CO3 was added dropwise to DMF contg. 20 g allyl alc. [107-18-6], and the mixt. was stirred 6 h to give 117 g intermediate, which was reacted with 25 g HSiCl3 in the presence of 0.02 g H2PtCl6.6H2O for 8 h at 100° under N to give 80 g second intermediate that was mixed with 33 g Et3N and 10 g MeOH [67-56-1] for 1 h to give 45 g C9F17O(CH2)3Si(OMe)3 (I) [64743-69-7]. Cotton cloth was soaked 1 min in a 5% EtOAc soln. of I contg. a trace of HCl as catalyst and dried 30 min at 100° to give a sample with oil repellancy all 3(AATCC test) after washing 0, 1, 3, and 5 times, compared with 3, 3, 2, 0-1 when a com. oil repellant was used.