Reference

High-molecular-weight poly(phenylene oxides)

High-molecular-weight poly(phenylene oxides). Bartmann, Martin; Bax, Hanns Joerg; Burzin, Klaus; Ribbing, Wilfried (Chemische Werke Huels A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3224691 A1 5 Jan 1984, 11 pp.Several reagents with their cas registry numbers 56-81-5 and 7447-39-4 are used here. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08G065-44. APPLICATION: DE 82-3224691 2 Jul 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Polyoxyphenylenes with concn.-dependent mol. wt. change (J-value, CHCl3, 25°) >50 mL/g are prepd. by oxidative polymn. of 2,6-disubstituted phenols in the presence of Cu amine complex catalysts and polyols, alkalies, and optionally secondary amine hydrobromides as promoters. Thus, passing air at 200 L/h into a soln. of 2,6-dimethylphenol 100, CuCl2 2, morpholine [110-91-8] 200, ethylene glycol [107-21-1] 3, 50% NaOH 4, and PhMe 100 g stirred at 30-35° for 90 min gave a polymer [25134-01-4] with J-value 54 mL/g, compared with 35 with no activator. .

Poly(phenylene oxides)

Poly(phenylene oxides). Burzin, Klaus; Bartmann, Martin; Bax, Hanns Joerg; Ribbing, Wilfried (Chemische Werke Huels A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3224692 A1 5 Jan 1984, 9 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08G065-44. APPLICATION: DE 82-3224692 2 Jul 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Polyoxyphenylenes with relative viscosity change (J-value) (CHCl3, 25°) >50 mL/g are prepd. 7447-39-4 and 1310-73-2 are also in the experiment. by polymg. 2,6-disubstituted phenols in the presence of Cu amine complexes and morpholine.HBr (I) [6377-82-8]-alkali metal or alk. earth hydroxide activators. Thus, passing 200 L/h air into a soln. of 2,6-dimethylphenol 100, CuCl2 2, morpholine [110-91-8] 200, I 5, 50% NaOH 4, and PhMe 900 g stirred at 30-35° for 90 min. gave a polymer [25134-01-4] with J-value 58 mL/g, compared with 35 with no activator. .