Titanium-containing catalyst and process for the production of p

Details Titanium-containing catalyst and process for the production of p Titanium-containing catalyst and process for the production of p

1996-03-19

1997-08-12

Mosley, Terressa

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

Synthetic resins

From carboxylic acid or derivative thereof

528176, 528193, 528194, 528272, 502150, 502300, 502349, 502350, C08G 6400

Patent

active

056567162

ABSTRACT:
The present invention comprises a new catalyst for the production of polyesters consisting essentially of a finely dispersed, large surface area titanium compound selected from hydrated TiO.sub.2 obtained by hydrolysis and having the composition yTiO.sub.2.zH.sub.2 O and from titanates having the composition (Me.sub.n O).sub.x.(TiO.sub.2).sub.y.(H.sub.2 O).sub.z, wherein Me is an alkaline earth metal or alkali metal. In addition, the present method comprises a process for the production of polyesters using this catalyst as an esterification or transesterification catalyst and as a polycondensation catalyst, whereby a phosphorous-oxygen-compound is added immediately before, during, or after the polycondensation.

REFERENCES:
patent: 3862087 (1975-01-01), Heller et al.
patent: 4031165 (1977-06-01), Saiki et al.
patent: 4365054 (1982-12-01), Stabley, Jr.
patent: 4483970 (1984-11-01), Huntjens et al.
patent: 4611049 (1986-09-01), Kuratsuji et al.

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