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Antioxidant composition and treatment method of allyl polyether

A technology of allyl polyether and treatment method, which is applied in the field of anti-oxidation, can solve the problems of low stability, low efficiency of hydrosilylation reaction, etc., and achieve the goal of improving reaction efficiency, enhancing storage stability, and improving anti-oxidation effect Effect

Active Publication Date: 2021-08-10
上海抚佳精细化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, in order to overcome the low stability of the antioxidant used in the prior art for allyl polyether and the low efficiency of subsequent hydrosilylation reactions, the present invention provides an antioxidant composition and allyl polyether Treatment method of base polyether

Method used

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  • Antioxidant composition and treatment method of allyl polyether
  • Antioxidant composition and treatment method of allyl polyether
  • Antioxidant composition and treatment method of allyl polyether

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1 antioxidant composition 1

[0043] This embodiment provides an antioxidant composition, including 0.5 g of 2,6-di-tert-butyl-4-polyethylene glycol phenol and 0.5 g of propyl gallate.

[0044]The preparation method of the anti-oxidation composition is as follows: respectively take selected weights of 2,6-di-tert-butyl-4-polyethylene glycol phenol and propyl gallate, and mix them uniformly to obtain the product.

[0045] Wherein, the structural formula of 2,6-di-tert-butyl-4-polyethylene glycol phenol is

[0046] The preparation method of this 2,6-di-tert-butyl-4-polyethylene glycol phenol comprises the following steps: at room temperature, 1.24 g of 2,6-di-tert-butyl phenol, [CP*IrCl 2 ] 2 Add 0.24g and 1.3g of potassium hydroxide into a 50mL three-neck flask, then add 25g of polyethylene glycol (molecular weight: 400), purge with nitrogen for 3 times and protect with nitrogen, gradually increase the temperature to 105°C and keep the reaction for 24h. ...

Embodiment 2

[0047] Embodiment 2 antioxidant composition 2

[0048] This embodiment provides an antioxidant composition, including 0.5 g of 2,6-di-tert-butyl-4-polypropylene glycol phenol and 0.5 g of propyl gallate.

[0049] The preparation method of the anti-oxidation composition is as follows: respectively take selected weights of 2,6-di-tert-butyl-4-polypropylene glycol phenol and propyl gallate, and mix them uniformly to obtain the product.

[0050] Wherein, the structural formula of 2,6-di-tert-butyl-4-polypropylene glycol phenol is

[0051] The preparation method of this 2,6-di-tert-butyl-4-polypropylene glycol phenol comprises the following steps: at room temperature, 1.24 g of 2,6-di-tert-butyl phenol, [CP*IrCl 2 ] 2 Add 0.48g and 2.6g of potassium hydroxide into a 100mL flask, then add 50g of polypropylene glycol (molecular weight: 2000), purge with nitrogen for 3 times and then protect with nitrogen, keep the temperature at 105°C for 24h. After the reaction was completed, ...

Embodiment 3

[0052] Embodiment 3 antioxidant composition 3

[0053] This embodiment provides an antioxidant composition, including 0.5 g of 2-methyl-6-tert-butyl-4-polypropylene glycol phenol and 0.5 g of propyl gallate.

[0054] The preparation method of the antioxidant composition is as follows: respectively take selected weights of 2-methyl-6-tert-butyl-4-polypropylene glycol phenol and propyl gallate, and mix them uniformly to obtain the product.

[0055] Wherein, the structural formula of 2-methyl-6-tert-butyl-4-polypropylene glycol phenol is

[0056] The preparation method of this 2-methyl-6-tert-butyl-4-polypropylene glycol phenol comprises the steps: at room temperature, 2-methyl-6-tert-butylphenol 1.04g, [Ir(cod)Cl] 2 0.24g, PPh 3 Add 0.3g and 2.0g of sodium hydroxide into the flask, then add 25g of polypropylene glycol monomethyl ether (molecular weight: 800), purge with nitrogen for 3 times and then protect with nitrogen, keep the temperature at 120°C for 24h. After the r...

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Abstract

The invention provides an antioxidant composition. The antioxidant composition comprises a polymer as shown in a formula (I) and propyl gallate, wherein n is a positive integer, R0 is independently selected from H or C1-C6 alkyl, and R1, R2 and R3 are independently selected from H or methyl; one or more of the polymers shown in the formula (I) and propyl gallate are used in a combined mode, the synergistic effect can be achieved, the anti-oxidation effect is remarkably improved, the double-bond activity of allyl polyether is remarkably improved, the efficiency of the allyl polyether participating in the hydrosilylation reaction is remarkably improved, and the reaction time is shortened; and moreover, the most important point is that the anti-aging capability of double bonds can be greatly enhanced by using the anti-oxidation composition and the allyl polyether, so that the storage stability of the double bonds is obviously improved, and the high reaction efficiency can still be kept in the hydrosilylation reaction after the anti-oxidation composition and the allyl polyether are placed for a long time.

Description

technical field [0001] The invention relates to the technical field of anti-oxidation, in particular to an anti-oxidation composition and a treatment method for allyl polyether. Background technique [0002] Polyether-modified polysiloxane, as an important class of silicone surfactants, is widely used in the coating industry, polyurethane, pesticide and daily chemical industry and other fields. In the polyurethane industry, polyether-modified polysiloxane, as a foam stabilizer, is a very important additive in polyurethane foam materials. Its main functions include ensuring the smooth progress of various reactions in the polyurethane foaming process, supporting the foam itself, Avoid foam collapse, air hole thickening and foam cracking and other undesirable phenomena. With the rapid development of polyurethane technology in our country, foam stabilizer, as one of the indispensable key components in polyurethane industry, has broad market prospects. [0003] The polyether-mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02C08K5/134C08G77/46
CPCC08K5/1345C08G77/46C08L71/02
Inventor 郭奕李玉博
Owner 上海抚佳精细化工有限公司