Detail of "24636-31-5"

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Polymerization inhibitors for separating crude acrylic silane solutions on commercial scale

Polymerization inhibitors for separating crude acrylic silane solutions on commercial scale. Kimae, Yoichi; Tsuchiya, Katsuyoshi; Matsuo, Takashi; Fukuda, Kiyoto (Chisso Corp., Japan). Eur. Pat. Appl. EP 753521 A2 15 Jan 1997, 14 pp. DESIGNATED STATES: R: DE, FR, GB. (English). (European Patent Organization). CODEN: EPXXDW.Several reagents with their cas registry numbers 24636-31-5 and 137-29-1 are used here. CLASS: ICM: C07F007-12. ICS: C07F007-18; C07F007-20. APPLICATION: EP 1996-304862 1 Jul 1996. PRIORITY: JP 1995-196966 10 Jul 1995; JP 1995-216792 1 Aug 1995; JP 1995-242535 28 Aug 1995; JP 1995-245484 30 Aug 1995; JP 1995-257020 7 Sep 1995; JP 1996-121047 18 Apr 1996. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) In this process, in which the crude acrylic silanes have general formula CH2:CR1COOXmSiR2n(R3)3-n (R1 = H, C1-8-alkyl, or C6-10-aryl; X = CH2CH2O and/or CH2; m =integer 1-12; R2 = hydrolyzable group; R3 = C1-12-alkyl or -alkenyl or aryl; n = integer 1-3) and which is carried out in the presence of a hindered phenol and/or amine as polymn. inhibitor, dialkyldithiocarbamic acid Cu and/or N-nitrosophenylhydroxylamine salts are used as addnl., synergistic polymn. inhibitors. Thus, 5 kg acrylic silane soln. contg. mainly 3-methacryloxypropyldimethylchlorosilane (I) and 0.5 g 2,6-di-tert-butyl-4-dimethylaminophenol was distd. at 30 kPa and 60-85° to remove low-boiling aryl methacrylate components. At 15 kPa and 69-75° and in the presence of 2 wt.% N-nitrosophenylhydroxylamine Al salt, I was removed without spontaneous polymn. .

Synthesis and characterization of poly(methyl methacrylate)-g-poly(dimethylsiloxane)copolymers

Synthesis and characterization of poly(methyl methacrylate)-g-poly(dimethylsiloxane)copolymers. I. Bulk and surface characterization. Smith, S. D.; DeSimone, J. M.; Huang, H.; York, G.; Dwight, D. W.; Wilkes, G. L.; McGrath, J. E. (Dep. Chem., Virginia Polytech. Inst. State Univ., Blacksburg, VA 24061, USA). Macromolecules, 25(10), 2575-81 (English) 1992. CODEN: MAMOBX. ISSN: 0024-9297. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Me methacrylate (I)-di-Me siloxane graft copolymers were prepd. using the macromonomer technique. Di-Me siloxane macromonomers of controlled mol. wts., narrow mol.-wt.There are some commonly used reagents with their cas registry numbers 110507-50-1 and 24636-31-5 in this article. distributions, and high percent functionalities were synthesized through the utilization of the living anionic ring-opening polymn. of hexamethylcyclotrisiloxane. The resultant methacryloxy-functionalized macromonomers, having a range of mol. wts., were statistically copolymd. with I to form the title graft copolymers of various chem. compns. Surface segregation of the low-surface-energy component, siloxane, was established using angular-dependent XPS and advancing water contact angle measurements. The thorough characterization of this heterophase polymeric system allowed the elucidation of the relation between the polymer architecture and the bulk and surface properties of the system. .