Strong non-ionic base catalyzed ring opening polymerization of l

Details Strong non-ionic base catalyzed ring opening polymerization of l Strong non-ionic base catalyzed ring opening polymerization of l

1993-12-17

1995-03-21

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528321, 528322, 528323, C08G 6914, C08G 7310

Patent

active

053996623

ABSTRACT:
Process for the ring opening polymerization of lactams to higher molecular weight polyamide polymers utilizing non-ionic polymerization catalyst base with a pKa of equal to or greater than 30, particularly certain strong, nitrogen and phosphorus containing non-ionic bases.

REFERENCES:
patent: 2805214 (1957-09-01), Zimmerman
patent: 3236817 (1966-02-01), Zimmerman
Tang, J. S. et al., Angew. Chem. Int. Ed. Engl., 32(6), 896, 1993.
Pietzonka, T. et al., Angew., Chem. Int. Ed. Engl., 32(5), 716, 1993.
Tang, et al., Tetrahedron Letters, 34, 2903-2904, 1993.
Tang, et al., J. Am. Chem. Soc., 115, 5015-5020, 1993.

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