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A kind of coproduction method of 2-(2-amino-propoxyl) ethanol and polyether polyol

A technology of polyether polyol and propoxyl, which is applied in the field of co-production of 2-ethanol and polyether polyol, can solve the problems of long process time, reduction of capital and time investment, and increase of input cost, etc. Simple, improve production efficiency, and avoid waste of raw materials

Active Publication Date: 2021-06-11
HONGBAOLI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation of 2-(2-amino-propoxy)ethanol and polyether polyols will select corresponding independent process routes to prepare separately, which will bring about an increase in input costs and a long time-consuming process. The reaction raw materials of all relate to epoxide, if can find a kind of suitable raw material and epoxide to cooperate to reach co-production 2-(2-amino-propoxyl) ethanol and polyether polyol, will greatly increase reduce capital and time investment

Method used

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  • A kind of coproduction method of 2-(2-amino-propoxyl) ethanol and polyether polyol
  • A kind of coproduction method of 2-(2-amino-propoxyl) ethanol and polyether polyol

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preparation example Construction

[0034] Preparation of Catalyst D:

[0035] Take by weighing 170g nickel nitrate Ni (NO 3 ) 2 , 19g cobalt nitrate Co(NO3 ) 2 , 1g chromium nitrate Cr(NO 3 ) 2 , 0.9g molybdenum nitrate Mo(NO 3 ) 2 Place in 90g deionized water, add 15.4g of carrier Al according to the mass ratio of carrier material and active component as 20:80 2 o 3 , heated and stirred to 70°C, after 20min, 35% Na was added dropwise 2 CO 3 Solution, aged at 65°C for 2h after the dropwise addition; suction filtered, and washed twice with deionized water and absolute ethanol respectively, then vacuum-dried at 100°C for 2h, and then calcined at 500°C for 2h; The obtained catalyst was ground to 40 mesh, and then washed with 30% H 2 / 70%N 2 The mixed gas was reduced at 160°C for 2 hours to obtain a black solid powder catalyst D, which was named 1# catalyst.

[0036] Take by weighing 170g nickel nitrate Ni (NO 3 ) 2 , 20g cobalt nitrate Co(NO 3 ) 2 , 30g chromium nitrate Cr(NO 3 ) 2 , 30g palladiu...

Embodiment 1

[0039] Add 745g of ethylene glycol and 6.4g of potassium hydroxide to a 3L reactor, feed 1394g of propylene oxide according to the molar ratio of ethylene glycol and propylene oxide as 1:2, and raise the temperature to 60°C for chain reaction for 1h. Mixed product A is obtained.

[0040] Then add 21g of pure water to the mixed product A, add 1.8g of magnesium silicate and 0.3g of aluminum silicate as adsorbent, stir for 1h, vacuum dehydrate, filter, then enter the rectification tower, set the distillation pressure is 0 MPa, and the temperature at the top of the tower is 200° C., the components in the mixed product A are separated to obtain 1348 g of tower top product B and 578 g of tower bottom product C.

[0041] 1348g tower top product B, 149.7g 1# catalyst are placed in the autoclave of 5L, carry out N respectively 2 with H 2 Replace each twice, and feed 1909g liquid NH into the autoclave 3 , and then fill the autoclave with H 2 , the temperature was raised to 80° C., t...

Embodiment 2

[0044] Add 745g of ethylene glycol, 2.4g of sodium ethylene glycol and 3g of sodium hydroxide to a 3L reactor, feed 1045g of propylene oxide according to the molar ratio of ethylene glycol to propylene oxide of 1:1.5, and heat up to 80°C The linking reaction was carried out for 1h to obtain the mixed product A.

[0045] Then after adding 36g of pure water in the mixed product A, add 17.9g of magnesium silicate, after stirring for 1h, vacuum dehydration, filter, then enter the rectification tower, set the distillation pressure to be-0.02MPa, and the tower top temperature is At 180°C, the components in the mixed product A were separated to obtain 1209g of tower top product B and 403g of tower bottom product C.

[0046] 1209g tower top product B, 80.6g 2# catalyst are placed in the autoclave of 5L, carry out N respectively 2 with H 2 Replace each twice, and feed 1712g liquid NH into the autoclave 3 , and then fill the autoclave with H 2 , the temperature was raised to 140° C....

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Abstract

The invention discloses a co-production method of 2-(2-amino-propoxy)ethanol and polyether polyol, the steps of which are: (1) carrying out chain reaction of ethylene glycol and propylene oxide to obtain a mixed product A (2) Carry out fractionation after adsorption and filtration of the mixed product A to obtain the top product B and the bottom product C; (3) carry out the hydrogenation reaction of the top product B to obtain the crude product, and obtain 2 after purification (2-amino-propoxy)ethanol; (4) reacting the bottom product C with propylene oxide and / or oxyethane, and obtaining ether polyol after refining. The present invention uses the same process route to simultaneously produce 2‑(2‑amino‑propoxy)ethanol and polyether polyols, successfully solving the problems of complex processes, many by-products and difficult utilization of by-products in the current synthesis technology And 2-(2-amino-propoxyl) ethanol and polyether polyol step-by-step preparation method production input cost is big, time-consuming problem.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a co-production method of 2-(2-amino-propoxy)ethanol and polyether polyol. Background technique [0002] 2-(2-Amino-propoxy)ethanol is an alcohol amine compound containing hydroxyl and amino structures. This type of compound can be used as an acid gas absorbent, surfactant and wetting agent, and can also be used as a polymer The raw material of things. Its synthesis method can usually be divided into the following categories: using amino acid (or its derivative), epoxy compound, aziridine derivative as raw material synthesis method, using aldehyde (or ketone) and imine (or nitro compound) etc.) reaction synthesis method, and amino hydroxylation reaction synthesis method, etc., wherein the synthesis method using epoxy compounds as raw materials is one of the commonly used methods, which is mainly carried out by the nucleophilic reaction of epoxy compounds a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C07C213/02C07C217/08
CPCC07C41/03C07C213/02C08G65/2609C08G65/2648C08G65/2696C07C217/08C07C43/132
Inventor 邢益辉黄东平芮辉辉张蒙蒙
Owner HONGBAOLI GRP CO LTD