Detail of "28757-63-3"

CAS Number:
28757-63-3
Name:
Poly[imino-1,6-hexanediylimino(1,9-dioxo-1,9-nonanediyl)]
Molecular Structure:
Formula:
(C15H28 N2 O2)n
Molecular Weight:
0
Synonyms:
Poly(iminohexamethyleneiminoazelaoyl)(8CI); Azelaic acid-1,6-hexanediamine salt polymer, SRU; Azelaicacid-hexamethylenediamine copolymer, SRU; Nylon 6/9; Nylon 69; PA 69;Poly(hexamethyleneazelamide), SRU; Polyamide 69; TPX 11215; TPX 822; TPX 829;Ultramid KR 4609; Vydyne 60H

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Time-of-flight secondary ion mass spectrometry of nylons: detection of high mass fragments: Time-of-flight secondary ion mass spectrometry of nylons: detection of high mass fragments. Bletsos, Ioannis V.; Hercules, David M.; Greifendorf, Dieter; Benninghoven, Alfred (Dep. Chem., Univ. Pittsburgh, Pittsburgh, PA 15260, USA). Anal. Chem., 57(12), 2384-8 (English) 1985. CODEN: ANCHAM. ISSN: 0003-2700. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) Section cross-reference(s): 73 Nylon 6 [25038-54-4], nylon 8 [25035-02-3], nylon 66 [32131-17-2], nylon 69 [28757-63-3], and nylon 66(a6) (I) [97950-78-2] were studied with secondary ion mass spectrometry and a time-of-flight mass analyzer. Fragmentation of the backbone producing ions smaller than one monomer unit and attachment of Ag+ to low mass fragments were obsd. Protonation and cationization of the repeat unit with Ag+, K+, and Na+ produced high mass ions characteristic of the polymer and the repeat unit sequence in the polymer chain. Ag- and Na-cationized ions as large as 24 monomer units for nylon 6 and as high as m/z ~ 3500 for I were detected.

Solubility and diffusion coefficients of water in aliphatic polyamides: Solubility and diffusion coefficients of water in aliphatic polyamides. Razumovskii, L. P.; Markin, V. S.; Zaikov, G. E. (Inst. Khim. Fiz., Moscow, USSR). Vysokomol. Soedin., Ser. A, 27(2), 308-11 (Russian) 1985. CODEN: VYSAAF. ISSN: 0507-5475. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) The diffusion of H2O in unoriented nylon 11 [25035-04-5], nylon 610 [9008-66-6], nylon 69 [28757-63-3], nylon 612 [24936-74-1], and nylon 611 [27967-39-1] was examd., and a quant. relation between the structure of linear polyamides and the sorption of H2O at different vapor pressures was established on the basis of the Flory-Huggins theory. Qual. identical plasticization of aliph. polyamides by water was obsd. A method was presented for calcn. of the diffusion coeff. of water in polyamides.