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Oligomeric coordination heterozygous organometallic catalyst, preparation method and application thereof

An organometallic and catalyst technology, which is applied in the field of oligomeric coordination hybrid organometallic catalysts, can solve the problems of easily polluted environment, easy occurrence of bubbles, scales, bubbling, and high waste rate in polyurethane products, and achieves low reaction catalytic activity, Strong targeted catalytic properties, no effect of highly toxic heavy metals

Active Publication Date: 2019-04-05
广州优润合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Polyurethane products are widely used. In order to produce non-bubble polyurethane products, prolong the flow time of polyurethane resin in the mold and accelerate the post-curing rate, catalysts are needed to delay gelation during processing. The catalyst with the best effect in traditional methods is organic Heavy metal mercury and lead catalysts, and emerging organic bismuth zinc catalysts; however, organometallic mercury and lead catalysts are highly toxic and easy to pollute the environment, and require protection when used, which is cumbersome and potentially harmful to personnel; while organic bismuth zinc catalysts It still has a strong catalytic effect on the reaction of moisture and isocyanate, resulting in the occurrence of bubbles, scales, bubbling and other undesirable phenomena in polyurethane products, and a high scrap rate

Method used

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  • Oligomeric coordination heterozygous organometallic catalyst, preparation method and application thereof
  • Oligomeric coordination heterozygous organometallic catalyst, preparation method and application thereof

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Embodiment 1

[0045] This embodiment provides an oligomeric coordination hybrid metal catalyst. 80g of NaOH was weighed and dissolved in 300g of water, 132.2g of cyclopentadiene was weighed and dissolved in 300g of THF and placed in a three-necked flask, the magnetic stirrer was turned on, the NaOH solution was gradually added dropwise to the THF solution, and after 1-2 hours of reaction, Add 129.6g NiCl 2 , the temperature was kept at 70-80 °C for 2-3 hours, the reaction mixture was left to stand, the solution was layered, the lower layer was green crystals, the upper layer solution was filtered off, and the lower layer of crystals was washed with deionized water for 2-3 times. The residual water is removed by the steamer to obtain nickelocene. The temperature was lowered to below 50°C, THF was added to dissolve the obtained nickelocene, 60g of butyllithium was added to stir the reaction, and CO was introduced into the reaction system. 2 Gas, keep the temperature at 70-80 ℃ and react for...

Embodiment 2

[0047]This embodiment provides an oligomeric coordination hybrid metal catalyst. 80g of NaOH was weighed and dissolved in 300g of water, 132.2g of cyclopentadiene was weighed and dissolved in 300g of THF and placed in a three-necked flask, the magnetic stirrer was turned on, the NaOH solution was gradually added dropwise to the THF solution, reacted for 1-2 hours, and then added 129.6g NiCl 2 , the temperature was kept at 70-80 °C for 2-3 hours, the reaction mixture was left standing, the solution was layered, the lower layer was green crystals, the upper layer solution was filtered off, and the lower layer crystals were washed with an aqueous solution for 2-3 times, and then removed with a reduced pressure rotary evaporator Residual water, get two nickelocene. Cool to below 50°C, add THF to dissolve it, add 60g butyllithium to stir the reaction, and pass CO 2 Gas, keep the temperature at 70-80 ℃ and react for about 1-2 hours to get a dark green liquid, stop passing CO 2 ga...

Embodiment 3

[0049] This embodiment provides an oligomeric coordination hybrid metal catalyst. 80g of NaOH was weighed and dissolved in 300g of water, 132.2g of cyclopentadiene was weighed and dissolved in 300g of THF and placed in a three-necked flask, the magnetic stirrer was turned on, the NaOH solution was gradually added dropwise to the THF solution, reacted for 1-2 hours, and then added 126.7g FeCl 2 , the temperature was kept at 70-80 °C for 2-3 hours, the reaction mixture was left to stand, the solution was layered, the lower layer was orange crystals, the upper layer solution was filtered off, and the lower layer of crystals was washed with an aqueous solution for 2-3 times, and then removed with a reduced pressure rotary evaporator Residual water, ferrocene. Cool to below 50°C, add THF to dissolve it, add 60g butyllithium to stir the reaction, and pass CO 2 Gas, keep the temperature at 70-80 °C and react for about 1-2 hours to get a brown liquid, stop passing CO 2 gas, and the...

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Abstract

The invention discloses an oligomeric coordination heterozygous organometallic catalyst, a preparation method and an application thereof. The oligomeric coordination heterozygous organometallic catalyst has the following structure [A-Me1-A-B-Me2]n, wherein A is cyclopentacarbyl C5H5-; Me1 and Me2 are metal ions selected from Ca, Ce, Fe, Ni, Ti, Bi and Zn respectively; n is greater than 1; and B is-RCOO-. The catalyst can be used in multiple fields of polyurethane materials comprising non-foam polyurethane (CASE), soft foam, hard foam, composite materials and the like. The catalyst is green and environment-friendly, does not contain toxic heavy metals, has strong targeted catalytic characteristics, has low catalytic activity on the reaction of moisture and isocyanate, can better solve thephenomena of bubbles, scales, bulges and the like in polyurethane products, and greatly reduces the rejection rate.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to an oligomeric coordination hybrid organic metal catalyst for polyurethane processing. Background technique [0002] Polyurethane products are widely used. In order to obtain bubble-free polyurethane products, prolong the flow time of the polyurethane resin in the mold and speed up the post-curing rate, a catalyst is needed to delay the gel during processing. The catalyst with the best effect in the traditional method is organic Heavy metal mercury, lead catalysts, and emerging organic bismuth-zinc catalysts; however, organometallic mercury and lead catalysts are highly toxic and easily pollute the environment, requiring protection during use, which is cumbersome and potentially harmful to personnel; and organic bismuth-zinc catalysts It still has a strong catalytic effect on the reaction of moisture and isocyanate, which leads to the occurrence of air bubbles, scales, bubbling and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/22C08G18/66C08G18/48C08G18/32C08G18/38
CPCC08G18/222C08G18/225C08G18/227C08G18/4808C08G18/4812C08G18/4829C08G18/4854C08G18/6685
Inventor 王泽永
Owner 广州优润合成材料有限公司
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