Liquid titanium-series catalyst used for poly(butylene succinate-co-butylene adipate)

A titanium-based catalyst, liquid technology, applied in the field of liquid titanium-based catalysts of polysuccinic acid-co-adipate-butylene glycol ester, can solve the problems of poor light stability, hydrolytic deactivation, and poor solubility of titanium compounds and other problems, to achieve the effect of good light resistance and stability

Inactive Publication Date: 2017-06-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is that the titanate catalysts in the prior art are susceptible to hydrolytic deactivation due to the influence of reaction by-product water, and the solubility of titanium compounds in butanediol is not good, and the light resistance is stable. In order to solve the problem of poor performance, a new liquid titanium catalyst is provided, especially a liquid titanium catalyst for polysuccinic acid-co-adipate-butylene glycol ester

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of liquid titanium-based catalyst A

[0034] In a reactor equipped with a stirrer, a condenser and a thermometer, add 18.6 grams (0.3 moles) of ethylene glycol, slowly drop 28.4 grams (0.1 moles) of tetraisopropyl titanate into the reactor, and precipitate a white precipitate , reacted at 80°C for 2 hours, centrifuged the product, washed the residue three times with distilled water, and dried the product in vacuum at 70°C to obtain a white powdery substance. The dried white powdery substance is placed in a reactor equipped with a stirrer, a condenser and a thermometer, and 27 grams (0.3 moles) of lactic acid, 22.4 grams (0.1 moles) of tripropyl phosphate, and 18 grams of butanediol ( 0.2 mol) was reacted at 100°C for 3 hours to obtain a light yellow transparent liquid, which was Catalyst A.

[0035] Preparation of polysuccinate-co-adipate-butylene glycol ester

[0036] Mix 280 grams of succinic acid, 87 grams of adipic acid and 348 grams of butanediol to m...

Embodiment 2

[0038] Preparation of Liquid Titanium Series Catalyst B

[0039] In a reactor equipped with a stirrer, a condenser and a thermometer, add 18.6 grams (0.3 moles) of ethylene glycol, slowly drop 28.4 grams (0.1 moles) of tetraisopropyl titanate into the reactor, and precipitate a white precipitate , reacted at 100°C for 2 hours, centrifuged the product, washed the residue three times with distilled water, and dried the product in vacuum at 70°C to obtain a white powdery substance. Place the dried white powdery substance in a reactor equipped with a stirrer, a condenser and a thermometer, add 18 grams (0.2 moles) of lactic acid, 32 grams of 25% aqueous sodium hydroxide solution (0.2 moles), trimethyl phosphate 14 g (0.1 mol) of ester and 27 g (0.3 mol) of butanediol were reacted at 120° C. for 4 hours to obtain a colorless transparent liquid, which was Catalyst B.

[0040] Preparation of polysuccinate-co-adipate-butylene glycol ester

[0041] Mix 280 grams of succinic acid, 87 gr...

Embodiment 3

[0043] A small amount of pure water was added to catalyst B, and no hydrolysis of the catalyst was found; then polysuccinic acid-co-adipic acid-butylene glycol ester was prepared according to the preparation method of [Example 2] polysuccinic acid-co-adipic acid-butylene glycol ester Acid-butylene glycol ester, the measured intrinsic viscosity is 1.9dL / g, and the b value is 9.7.

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Abstract

The invention relates to a liquid titanium-series catalyst used for production of poly(butylene succinate-co-butylene adipate). The liquid titanium-series catalyst mainly overcomes the problem that conventional titanate catalysts have attenuated activity due to susceptibility to hydrolysis and inactivation under the influence of a reaction by-product, i.e., water, and the problems that conventional catalysts are intermiscible with intermiscible and have poor light stability. The liquid-state titanium-series catalyst in the invention comprises a reaction product of the following raw materials: (A) a titanium compound with a general formula of Ti(OR)4, wherein R is an alkyl group with 1 to 10 carbon atoms; (B) dihydric alcohol with 2 to 10 carbon atoms; (C) at least one aliphatic organic acid selected from organic acids; (D) a compound of at least one metal selected from the group IA in the periodic table of elements; and (E) at least one phosphate compound selected from phosphorus compounds. With such a technical scheme, the liquid-state titanium-series catalyst provided by the invention is applicable to industrial production of poly(butylene succinate-co-butylene adipate).

Description

technical field [0001] The invention relates to a liquid titanium series catalyst, in particular to a liquid titanium series catalyst for polysuccinic acid-co-adipate-butylene glycol ester. Background technique [0002] Polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc. are important synthetic materials. Due to their excellent properties, they can be used in synthetic fibers, engineering plastics, etc. field, widely used. However, these polymers cannot be degraded in nature, and the white pollution they bring is a major problem plaguing the world. In order to solve the harm caused by white pollution to the environment, the development of degradable materials is the trend of future development, and the proportion of degradable materials used will increase day by day. [0003] Polysuccinate-co-adipate-butylene glycol ester (PBSA), which is obtained by copolymerization of succinic acid, adipic acid and 1,4-butanediol, is a PBS-based r...

Claims

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Application Information

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IPC IPC(8): C08G63/16C08G63/85C08G63/87C08G63/83
CPCC08G63/16C08G63/83C08G63/85C08G63/87
Inventor 周芬熊金根周文乐宋歌章瑛虹
Owner CHINA PETROLEUM & CHEM CORP
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