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Polyurethane reaction type organic metal catalyst as well as preparation method and application thereof

An organometallic and reactive technology, applied in organic chemistry, chemical instruments and methods, metallocene, etc., can solve problems such as severe toxicity, personal injury, cumbersomeness, etc., achieve strong targeted catalytic characteristics, reduce waste rate, and solve bubble effect

Active Publication Date: 2021-08-24
广州优润合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 need to be used during processing to achieve proper gel time and faster curing time. Traditional methods The catalysts with the best effect are 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. They need to be protected when used, which is cumbersome and harmful to personnel. Potential damage; while organic bismuth-zinc catalysts still have a strong catalytic effect on the reaction of moisture and isocyanate, resulting in polyurethane products prone to bubbles, scales, bubbling and other undesirable phenomena, high scrap rate

Method used

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  • Polyurethane reaction type organic metal catalyst as well as preparation method and application thereof
  • Polyurethane reaction type organic metal catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This example provides the preparation of polyurethane reactive organometallic catalyst.

[0062] (1) In a reactor equipped with a stirrer, a thermometer, and a condensing reflux device, add 18.6 grams of ferrocene, add 70-75ml of dichloromethane to completely dissolve it; under nitrogen protection, slowly add 7.3 grams of N , N-dimethylformamide, keep warm at -10°C to -5°C, continue to stir for 10-20min after the dropwise addition; slowly add 15.3 grams of phosphorus oxychloride into the above reactor, and slowly stir after the dropwise addition Raise the temperature to 40-50°C, reflux for 18-20h; distill methylene chloride under reduced pressure at a temperature lower than 60°C, pour the residue into ice water at 0-4°C, stir, stand still, and suction filter, and use the filtrate Saturated sodium bicarbonate solution was neutralized to pH=7, extracted with ether, the extract was dried with molecular sieves, suction filtered, and rotary evaporated to obtain the product f...

Embodiment 2

[0066] This example provides the preparation of polyurethane reactive organometallic catalyst.

[0067] (1) In a reactor equipped with a stirrer, a thermometer, and a condensing reflux device, add 18.6 grams of ferrocene, add 70-75ml of dichloromethane to completely dissolve it; under nitrogen protection, slowly add 7.3 grams of N , N-dimethylformamide, keep warm at -10°C to -5°C, continue to stir for 10-20min after the dropwise addition; slowly add 15.3 grams of phosphorus oxychloride into the above reactor, and slowly stir after the dropwise addition Raise the temperature to 40-50°C, reflux for 18-20h; distill methylene chloride under reduced pressure at a temperature lower than 60°C, pour the residue into ice water at 0-4°C, stir, stand still, and suction filter, and use the filtrate Saturated sodium bicarbonate solution was neutralized to pH=7, extracted with ether, the extract was dried with molecular sieves, suction filtered, and rotary evaporated to obtain the product f...

Embodiment 3

[0071] This example provides the preparation of polyurethane reactive organometallic catalyst.

[0072] (1) In a reactor equipped with a stirrer, a thermometer, and a condensing reflux device, add 18.6 grams of ferrocene, add 70-75ml of dichloromethane to completely dissolve it; under nitrogen protection, slowly add 7.3 grams of N , N-dimethylformamide, keep warm at -10°C to -5°C, continue to stir for 10-20min after the dropwise addition; slowly add 15.3 grams of phosphorus oxychloride into the above reactor, and slowly stir after the dropwise addition Raise the temperature to 40-50°C, reflux for 18-20h; distill methylene chloride under reduced pressure at a temperature lower than 60°C, pour the residue into ice water at 0-4°C, stir, stand still, and suction filter, and use the filtrate Saturated sodium bicarbonate solution was neutralized to pH=7, extracted with ether, the extract was dried with molecular sieves, suction filtered, and rotary evaporated to obtain the product f...

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Abstract

The invention relates to a preparation method and application of a polyurethane reaction type organic metal catalyst. The polyurethane reaction type organic metal catalyst has the following structure defined in the specification, wherein Me1 is selected from the following metal ions: Fe, Ni, Ce, Zn or Mn; R is a C2-C10 alkyl group, or an aralkyl-substituted, cycloalkyl-substituted or alkoxy-substituted alkyl group having 2 to 10 carbon atoms; X1 and X2 are the same or different, and independently represent hydrogen, halogen, C1-C10 alkyl, or C1-C10 alkoxy; Me2 is selected from the following metal ions: Fe, Ni, Ce, Zn, Mn, Co or Bi; X3 is halogen, a C1-C22 aliphatic carboxyl group, a C1-C22 aliphatic sulfydryl group, an aralkyl-substituted or cycloalkyl-substituted aliphatic carboxyl group with 1 to 22 carbon atoms, or an aralkyl-substituted or cycloalkyl-substituted aliphatic sulfydryl group with 1 to 22 carbon atoms; and n is greater than or equal to 1.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to polyurethane reactive organometallic catalysts for polyurethane processing. Background technique [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 need to be used during processing to achieve proper gel time and faster curing time. Traditional methods The catalysts with the best effect are 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. They need to be protected when used, which is cumbersome and harmful to personnel. Potential damage; while the organic bismuth zinc catalyst still has a strong catalytic effect on the reaction of moisture and isocyanate, resulting in the occurrence of bubb...

Claims

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Application Information

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IPC IPC(8): C08G18/22C07F19/00C07F17/02
CPCC08G18/222C07F17/02C07F17/00
Inventor 王泽永古凌华
Owner 广州优润合成材料有限公司
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