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Antioxidant resin through benzene ethylenation of p - methyl phenol ¿C dicyclopentadiene

A technology of p-cresol and dicyclopentadiene, which is applied in the field of p-cresol-dicyclopentadiene styrenated antioxidant resin and antioxidant, can solve the problem of poor heat resistance, affecting the use effect, and potential safety hazards, etc. problems, to achieve the effect of safe and reliable synthesis process, economical dosage, and mild reaction conditions

Inactive Publication Date: 2008-10-08
杨彦威
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many kinds of antioxidants used in the technical field of plastics and rubber products. Among them, 1010 antioxidants are used more, and imported polyphenol antioxidant resins are gradually increasing. However, due to the main One of the production raw materials is isobutylene, which must be used and stored under high pressure conditions during the production process. Therefore, there are certain safety hazards, and the compatibility with plastics and rubber is not very good, and the heat resistance is poor. Affect the use effect of this type of product

Method used

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  • Antioxidant resin through benzene ethylenation of p - methyl phenol ¿C dicyclopentadiene
  • Antioxidant resin through benzene ethylenation of p - methyl phenol ¿C dicyclopentadiene
  • Antioxidant resin through benzene ethylenation of p - methyl phenol ¿C dicyclopentadiene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 10kg of p-cresol and stir in the cyclohexane solvent of 35kg, add the macroporous strong acid resin catalyst of 1kg, heat up and reflux, drop 8kg of dipentadiene and cyclohexane mixed solution (weight The ratio is 1:1), the titration time is 30 minutes, react for 5 hours, then add 3 kg of styrene dropwise, the titration time is 2 hours, react for 2 hours, filter and recover the catalyst, decolorize the reaction solution through activated carbon, filter to remove activated carbon , into the distillation pot to distill to remove the solvent, and the product of the present invention is obtained after cooling.

[0033] Appearance of this product is white or light yellow powder, average molecular weight: 650-850, melting point: 100-115°C, ash content: 0.05%, average particle size: 10-30μm, solubility: soluble in aromatic solvents, such as styrene , acetone and alcohol solvents, insoluble in water and fat solvents.

Embodiment 2

[0035] The p-cresol of 10kg and the cyclohexane solvent of 50kg are mixed and stirred evenly, add the zirconium sulfate catalyst of 1.5kg, heat up and reflux, drip the dipentadiene and cyclohexene solution of 7.5kg in the reflux process (weight ratio 1: 1), the titration time was 50 minutes, reacted for 4 hours, then added dropwise the styrene of 4kg, the titration time was 1.5 hours, reacted for 2 hours, filtered and recovered the catalyst, the reaction solution was decolorized by activated carbon, filtered to remove the activated carbon, Enter the distillation kettle to distill to remove the solvent, and obtain the product of the present invention after cooling.

[0036] Appearance of this product is white or light yellow powder, average molecular weight: 650-850, melting point: 100-115°C, ash content: 0.05%, average particle size: 10-30μm, solubility: soluble in aromatic solvents, such as styrene , acetone and alcohol solvents, insoluble in water and fat solvents.

Embodiment 3

[0038] In the p-cresol of 10kg, add the cyclohexane solvent of 45kg, stir evenly, add the solid superacid catalyst of 1kg, heat up and reflux, drop 8kg of dipentadiene and cyclohexane solution (weight ratio) in the reflux process 1:1), the titration time was 50 minutes, reacted for 4 hours, then added dropwise 3.5 kg of styrene, the titration time was 2.5 hours, reacted for 2 hours, filtered and recovered the catalyst, the reaction solution was decolorized by activated carbon, and filtered to remove activated carbon , into the distillation pot to distill to remove the solvent, and the product of the present invention is obtained after cooling.

[0039] Appearance of this product is white or light yellow powder, average molecular weight: 650-850, melting point: 100-115°C, ash content: 0.05%, average particle size: 10-30μm, solubility: soluble in aromatic solvents, such as styrene , acetone and alcohol solvents, insoluble in water and fat solvents.

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Abstract

This invention discloses an antioxidant of p-methylphenol-dicyclopentadiene-styrene resin. The resin is white or yellowish powder, with an average molecular weight of 650-850, a melting point of 100-115 deg.C, an ash content of 0.05%, and an average particle size of 10-30 mum. The resin is soluble in aromatic solvents such as styrene, acetone and alcohols, while insoluble in water and fatty solvents. The resin can be used as a high-efficiency antioxidant in rubber products and polymers such as SBR and carboxylated SBR latex, ABS, NBR, BR, SBS, SIS and their derivatives. The resin can also be used in stability protection in the manufacture of the above rubber products and polymers.

Description

technical field [0001] The invention discloses a new antioxidant, in particular provides a p-cresol-dicyclopentadiene styrenated antioxidant resin, which belongs to the technical field of chemical synthesis. Background technique [0002] At present, there are many kinds of antioxidants used in the technical field of plastics and rubber products. Among them, 1010 antioxidants are used more, and imported polyphenol antioxidant resins are gradually increasing. However, due to the main One of the production raw materials is isobutylene, which must be used and stored under high pressure conditions during the production process. Therefore, there are certain safety hazards, and the compatibility with plastics and rubber is not very good, and the heat resistance is poor. affect the use of such products. Contents of the invention [0003] The invention provides a p-cresol-dicyclopentadiene styrenated antioxidant resin, which has better compatibility with plastics and heat resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/138C08L21/00C08L101/00
Inventor 杨彦威
Owner 杨彦威
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