TH43987B - Polycondensation of polyesters with lithium titania oxalate catalyst. - Google Patents

Abstract

DC60 (27/12/43) .This invention relates to A method for the fabrication of polyesters, especially with the use of lithium titania oxalate as the catalyst for such reactions, to provide a rapid reaction. It has good color properties. Excellent for the polyester received This invention provides Improved method of Polyester production By polycondensation of the polymer-producing reagent, this improvement would consist of the use of lithium titania oxalate as the catalyst of the polymerization. The revised process of logic produces a polymer with an enhanced color. Compared to other titanyl oxalate catalysts and new polyester without antimony presence. This invention involves A method for the fabrication of polyesters, especially with the use of lithium titania oxalate as the catalyst for such reactions, to provide a rapid reaction. It has good color properties. Excellent for the polyester obtained This invention provides Improved method of Polyester production By polycondensing of the reagent that produces a polymer, where this improvement will consist of the use of lithium titania oxalate as a catalyst of polyethylene. The enhanced concept of the process produces a polyester with an enhanced color. Compared with other titanyl oxalate, catalyst and new polyester without the presence of antimony.

Claims (2)

1. In the process of producing polyester. By the catalyzed pollicons of reagents that form the polyester On the other hand, there is an improved polyconsumption catalog consisting of the use of lithium titanyl oxalate as the catalyst 2. The modified process according to claim 1. Where the amount of lithium titanium oxalate is from 5 parts per million to 400 parts per million, based on the weight of titanium per part of the polymer-producing reagent. Clause 1 where lithium titania oxalate is dyl lithium titania oxalate 4. Claim Clause 1 where lithium titanium oxalate is Monolithium Titanyl Oxalate 5. Claim Procedure No. 3, where Monolithium Titanyl Oxalate belongs to the formula LiKTiO (C2O4) 2 6. Claim Process No. 3 in Where lithium titanyl oxalate contains hydration water 7. Proceed of claim 4 where lithium titania oxalate contains hydration water. 8. Clause 5 Clause 5 where lithium titanioxalate contains hydration water 9. Antimony free polyester produced by the Clause 1 1 0. Clause 1 of the claim procedure, which follows the use of the catalyst antimony in Combination with lithium titanyl oxalate catalyst 1 1. Proceeding of Clause 10, where lithium titanyl oxalate catalyst is composed of at least 5 parts per million by weight of titanium. In reaction mixtures 1 2. In the process of esterification or catalyzed trans-esterification, an improvement consisting of the use of titanium oxalate as a catalytic converter. Post of formula M2TiO (C2O4) 2 (H2O) n Where each M is carefully selected Independent of potassium, lithium, sodium, and cesium and n is zero or refers to the water content of hydration.