Preparation method of titaniferous composition with light stability

Abstract

The invention relates to a preparation method of a titanium-containing composition with light stability, which mainly solves the problem of poor light stability of reaction products of titanate and 2-hydroxycarboxylic acid compounds in the prior art. The present invention preferably solves this problem by first reacting titanate with 2-hydroxycarboxylic acid compounds, and then reacting the reaction product with an organic phosphonic acid compound to obtain a titanium-containing composition, which can be used in the production of polyester catalysts. in industrial production.

Description

technical field

[0001] The invention relates to a preparation method of a titanium-containing composition with light stability. Background technique

[0002] Polyethylene terephthalate is an important industrial raw material, which can be widely used in fibers, sheets, films and other materials.

[0003] The research on polyester catalysts has never stopped since the advent of polyester. At present, the polyester catalysts with more industrial production and research are mainly three series of catalysts: antimony, germanium and titanium. Among them, the most commonly used antimony series catalysts (including Sb 2 o 3 , SbAc 3 and ethylene glycol antimony, etc.), currently 90% of polyester in the world is produced by antimony catalysts. The disadvantages of antimony-based catalysts are: low activity; heavy metal catalysts pollute the environment; polymers are gray. The germanium-based catalyst has good stability, causes fewer side reactions during the reaction process, a...