Polyether polyol, preparation method thereof, preparation method of polyether amine and prepared polyether amine

A technology of polyether polyol and polyether amine, which is applied in the field of preparation of polyether amine and anti-yellowing polyether polyol, can solve the problems of harsh carrier pore size distribution, reduced catalyst activity, uneven metal dispersion, etc. Polymerization and polymerization reaction, improve activity and selectivity, improve the effect of raw material utilization

Active Publication Date: 2018-08-14
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The common problem of the above-mentioned supported catalysts: the activity of the catalyst decreases with the increase of the use time during use, that is, the catalyst is deactivated
However, the catalyst preparation process has the following problems: (1) The pore size distribution of the carrier is demanding, and it is difficult to prepare a carrier that meets the requirements
(2) Prepared by the molten salt method, there is a problem of salting out during the impregnation process, which leads to the blockage of the carrier pores
(3) High metal loading, uneven metal dispersion, difficulties in preparation and metal loss
However, the catalyst has the following problems: (1) Co-precipitation method is used to prepare the process, which has the problems of complex process and poor reproducibility
(2) Contain high content of cobalt, rare metal yttrium and precious metal palladium in the catalyst, and the content of active component in the supported catalyst is also up to 50% (by weight), there is the problem that catalyst cost is high
(3) The catalyst is only used in batch process and does not involve continuous process application examples
High-color polyetheramine-cured epoxy resin cannot obtain colorless, transparent and high-gloss materials, and its application in the field of casting and potting is limited; Ping, jewelry glue and wind power fields are also subject to certain restrictions
The polyetheramine preparation catalyst in the prior art needs to be further improved in one or more aspects such as anti-hydration, anti-coking and anti-sintering performance, preparation process, metal loading, and catalyst cost; meanwhile, the prior art catalyst is for low Molecular weight polyether polyols, especially polyether polyols with a number average molecular weight of less than 500, show unsatisfactory catalyst stability in the reductive amination reaction

Method used

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  • Polyether polyol, preparation method thereof, preparation method of polyether amine and prepared polyether amine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) 7wt% NiO-1wt% Au 2 o 3 -0.2wt%SeO 2 / NbAlO 4 Catalyst preparation

[0080] 99.1g Nb(OH) 5 and 28.5g Al 2 o 3 Add it into a mortar and mix evenly, grind and sieve to obtain a mixture of 100-200 meshes, then transfer the mixture to a crucible, dry at 110°C for 14h, and then bake in air at 1050°C for 20h (heating rate : 3°C / min; the heating rate refers to the temperature rising from room temperature to the final temperature at a determined rate per minute). Productive rate: 100g white powder (X-ray diffraction analysis shows that purity is higher than 98% NbAlO 4 ). A columnar carrier of 3*3mm is obtained through tablet molding.

[0081] According to the content and composition of the catalyst, the above carrier was impregnated with 29.7gNi(NO 3 ) 3 ·6H 2 O, 1.68gAu(NO 3 ) 3 and 0.25gH 2 SeO 3 In the aqueous solution, after the adsorption equilibrium, it was dried at 110°C for 6h, and then calcined in the air at 450°C for 11h to obtain the catalyst prec...

Embodiment 2

[0103] (1) 10wt% NiO-0.7wt% Au 2 o 3 -0.3wt%SeO 2 / NbAlO 4 Catalyst preparation

[0104] 136.0g Nb 2 (CO 3 ) 5 and 28.5g Al 2 o 3 Add it into a mortar and mix evenly, grind and sieve to obtain a mixture of 100-200 meshes, then transfer the mixture to a crucible, dry at 150°C for 8h, and then bake in air at 900°C for 24h (heating rate : 5°C / min. The heating rate refers to the temperature rising from room temperature to the final temperature at a certain rate per minute). Productive rate: 100g white powder (X-ray diffraction analysis shows that purity is higher than 98% NbAlO 4 ). A columnar carrier of 3*3mm is obtained through tablet molding.

[0105] According to the content and composition of the catalyst, the above carrier was impregnated with 43.7g Ni(NO 3 ) 3 ·6H 2 O, 1.21g Au(NO 3 )3 and 0.39g H 2 SeO 3 In the aqueous solution, after the adsorption equilibrium, it was dried at 130°C for 4h, and then calcined in the air at 300°C for 14h to obtain the catal...

Embodiment 3

[0116] (1) 5wt% NiO-0.8wt% Au 2 o 3 -0.5wt%SeO 2 / NbAlO 4 Catalyst preparation

[0117] 226.5g Nb(NO 3 ) 5 and 28.5g Al 2 o 3 Add it into a mortar and mix evenly, grind and sieve to obtain a mixture of 100-200 mesh, then transfer the mixture to a crucible, dry at 130°C for 10h, and then bake in air at 1100°C for 22h (heating rate : 4 ℃ / min. The rate of temperature rise refers to that the temperature is raised to the final temperature from room temperature at a certain rate per minute.) Productive rate: 100g white powder (X-ray diffraction analysis shows that it is NbAlO with a purity higher than 97%) 4 ). A 3*3mm strip carrier is obtained through extrusion molding.

[0118] According to the content and composition of the catalyst, the above carrier was impregnated with 20.8g Ni(NO 3 ) 3 ·6H 2 O, 1.32g Au(NO 3 ) 3 and 0.62g H 2 SeO 3 In the aqueous solution, after the adsorption equilibrium, it was dried at 100°C for 8h, and then calcined in the air at 400°C for...

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Abstract

The invention discloses a polyether polyol, a preparation method thereof, a preparation method of polyether amine and the prepared polyether amine. By-products (including propylene glycol, dipropyleneglycol and dipropylene glycol) of polypropylene glycol rectification are used as raw materials to prepare the anti-yellowing polyether polyol, and the preparation process is carried out in the presence of N,N-dialkyl hydroxylamine. The anti-yellowing polyether polyol reacts under the action of a reductive amination catalyst for preparing the polyether amine, wherein the reductive amination catalyst comprises an NbAlO4 carrier and active components of NiO, Au2O3 and SeO2 supported on the carrier. According to the invention, wastes are turned into values, the invention solves the problem that the polyether polyol synthesized by the recycled and reused rectification by-products of polypropylene glycol rectification is yellowed easily, and finally the polyether amine product with a Pt-Co colour number of 10 or below is obtained.

Description

technical field [0001] The invention relates to a polyether polyol and a preparation method thereof, a method for preparing polyetheramine by using the polyether polyol and the prepared polyetheramine. Specifically, it relates to a method for preparing anti-yellowing polyether polyol by using by-products, and a method for preparing polyetheramine by using the polyether polyol. Background technique [0002] Polyether polyols are prepared by reacting hydroxyl-containing initiators with alkylene oxides such as ethylene oxide and propylene oxide in the presence of alkali metal hydroxide catalysts. Polyether polyols with different functionalities can be prepared according to the number of active atoms contained in the initiator. The most commonly used polyether polyols are polyoxypropylene diols and polyoxypropylene triols. Polyether polyol is an important polymer material. Since the 1960s, polyurethane products produced with it have been widely used in many fields such as furni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/322C08G65/325C07C41/03C07C43/11C07C213/02C07C217/08B01J27/057
CPCB01J23/002B01J27/0573C07C41/03C07C213/02C08G65/2609C08G65/2648C08G65/322C08G65/3255C08G2650/04C07C43/11C07C217/08
Inventor 任树杰张聪颖刘振国李鑫李文滨曹善健尚永华黎源
Owner WANHUA CHEM GRP CO LTD
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