Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1999-03-01
2000-03-07
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528275, 528279, 528280, 528282, 528283, 528298, 528299, 528300, 528301, 528302, 528306, 528307, 528308, 5283086, 502102, 502103, 502107, 502131, 502132, 502156, 502169, 502172, 502227, 502231, 524783, 524784, 524786, C08G 6378, B01J 3100
Patent
active
060342021
ABSTRACT:
The invention provides non-antimony containing polymerization catalysts for the condensation of polyesters. The catalyst is in the form of a clear chlorine and/or bromine containing solution of a metal glycoxide and a metal glycolate having a pH in the range of from 0 to about 1, and containing chlorine and/or bromine atoms at a number ratio of chlorine and/or bromine to total metal cations in the catalyst ranging from about 0.5:1 to about 3:1. Polyesters produced with this catalyst have improved melt elasticity, and higher melt viscosity. The former property is desirable for the preparation of large and complex shaped polyester containers, and the latter property is desirable for melt spinning of industrial grade fibers and tire cords.
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Francois Leverd, Alain Fradet and Ernest Marechal, Study of Model Esterifications and of Polyesterifications Catalyzed by Various Organometallic derivatives--I. Study of Esterifications Catalyzed by Titanium Derivatives, vol. 23, No. 9, pp. 695-698; 1987.
Francois Leverd, Alain Fradet and Ernest Marechal, Study of Model Esterifications and of Polyesterifications Catalyzed by Various Organometallic derivatives--II. Study of Esterifications and Polyesterifications Catalyzed by Zirconium Derivatives, vol. 23, No. 9, pp. 699-704, 1987.
Francois Leverd, Alain Fradet and Ernest Marechal, Study of Model Esterifications and of Polyesterifications Catalyzed by Various Organometallic derivatives--III. Kinetic and Mechanistic Study of Esterifications Catalyzed by Tetrabutoxytitanium or Zirconium, vol. 23, No. 9, pp. 705-709, 1987.
Aharoni Shaul Moshe
Goranov Konstantin Nikolaev
Acquah Samuel A.
Allied-Signal Inc.
Friedenson Jay P.
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