Detail of "25038-74-8"

Reference

Process for producing polylaurinlactam

Process for producing polylaurinlactam. Enenshtein, G. A.; Berezovsky, A. V.; Dubrokhotova, M. K.; Lyadysheva, E. K.; Nosova, L. A.; Nurmvukhomedov, S. N.; Tarasova, E. L.; Gusakov, S. S.; Pertsov, L. D.; Ebel, I. A. (USSR ). Brit. GB 1468653 30 Mar 1977,6 pp. (English). (United Kingdom). CODEN: BRXXAA. CLASS: IC: C08G069-16. APPLICATION: GB 76-4015 2 Feb 1976. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Low volatiles-content polylaurinlactam [25038-74-8] was manufd. by hydrolytically polymg laurinlactam in a homophase system contg. H2O, H3PO4, and a dicarboxylic acid at 280-310.degree. and 70-120 atm to give a prepolymer, throttling the mixt. down to 0.005-0.1 atm to remove H2O and unreacted monomer, and polymg the prepolymer at 280-300.degree. in a thin-film app. Thus, a laurinlactam melt contg. H2O 10, H3PO4 0.2, and adipic acid 0.2% was fed at 3 kg/h into a 12-m-long .times. 12-mm-diam. reactor at 290.degree. and 96 atm. The mixt., contg. 5-5.5% low mol. wt. compds., was throttled down to 0.013 atm at 50 m/sec through 360 narrow slits. The prepolymer was polymd. (residence time 20 min) in a 1.7-1.8-mm layer at 0.013 atm and 290.degree.. The end product contained 1.6% low mol. wt. compds. and had sp. viscosity 0.74 units 0.5% in m-cresol at 25.degree..

Polymerization and copolymerization of 12-dodecalactam

Polymerization and copolymerization of 12-dodecalactam. Kondelikova, Jaroslava; Aliev, R.; Gomola, Rudolf; Kralicek, Jaroslav (Czech. ). Czech. CS 212857 B 1 Jan 1984,3 pp. (Czech). (Czechoslovakia).There are some reagents with their cas registry numbers 19411-98-4 and 88108-32-1 are used in this study. CODEN: CZXXA9. CLASS: IC: C08G069-14. APPLICATION: CS 80-3106 4 May 1980. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) The title (co)polymn. was initiated with 0.1-10 mol % salt of H3PO4 with a C4-12 n-alkanolactam at 220-320°. Thus, polymn. of 12-dodecalactam (I) for 18 h at 260° in the presence of 2 mol % salt [88108-32-1] of H3PO4 and I in an evacuated sealed ampul gave polymer (II) [25038-74-8] having 1.2% EtOH-extractables and limiting viscosity no. 1.45 (m-cresol, 25°). Polymn. at 300° gave II after 2.5 h. .