Preparation method of furan-modified cashew phenolic resin

A technology of cardanol phenolic resin and cardanol, which is applied in the preparation field of furan-modified cardanol phenolic resin, can solve the problems that the boiling water resistance cannot meet the application requirements, and achieves excellent boiling water resistance, improved boiling water resistance, and superior heat resistance. Effect

Active Publication Date: 2013-09-11
天津市中海科技有限公司
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cardanol formaldehyde resin is the basis of cardanol modification, and it is mostly used in the fields of adhesives, friction materials, and ordinary coatings. However, it is used as a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of furan-modified cashew phenolic resin
  • Preparation method of furan-modified cashew phenolic resin
  • Preparation method of furan-modified cashew phenolic resin

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] The design idea of ​​the preparation method of the furan-modified cardanol phenolic resin of the present invention is based on the heterocyclic structure in which the furan ring of the furan-modified cardanol phenolic resin has a conjugated double bond, and its performance is stable. As the structural unit of the polycondensate, it can effectively improve the Acid resistance, alkali resistance, solvent resistance and heat resistance of resin. At the same time, the introduction of the furan ring increases the molecular weight of the polycondensate, and at the same time increases the spacing of the methylol benzene ring, which reduces the steric hindrance of the methylol group in the further polycondensation process during thermal curing, and makes the resin thermally cured. The cross-linking is more sufficient and the cross-linking density is larger, which promotes the formation of a high cross-linking density network structure and improves the resin's resistance to perme...

Example Embodiment

[0030] Example 1: (in parts by weight)

[0031] (1) The proportions of its components are calculated in parts by weight: cardanol: 100 parts, formaldehyde: 32 parts, furfuryl alcohol: 10 parts, xylene: 80 parts, catalyst: 2 parts of zinc oxide, 6 parts of ammonia water.

[0032] (2) In the preparation process of the resin of the present invention, cardanol, formaldehyde and catalyst are added in proportion to the reaction kettle, and the reaction is carried out at 70°C-80°C for 1-2 hours; furfuryl alcohol is added, and the reaction is performed at 90°C-100°C for 1-2 hours; After adding 80-120 parts of xylene, the temperature is raised, and the water is removed by an oil-water separation device until the temperature reaches 155-160° C. and kept for 1-2 hours to obtain the resin of the present invention.

Example Embodiment

[0033] Example 2 (in parts by weight):

[0034] (1) The proportion of its components is calculated in parts by weight: cardanol: 140 parts, formaldehyde: 54 parts, furfuryl alcohol: 23 parts, xylene: 120 parts, catalyst: 9 parts of ammonia water.

[0035] (2) The preparation method of this embodiment is the same as the preparation method of embodiment (1).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a preparation method of furan-modified cashew phenolic resin. The preparation method comprises the following steps of: selecting the following raw materials in parts by weight: 100-140 parts of cardanol, 32-54 parts of formaldehyde, 10-23 parts of furfuryl alcohol, 80-120 parts of dimethyl benzene and 8-10 parts of catalyst; adding the cardanol, the formaldehyde and the catalyst into a reaction kettle in proportion, reacting for 1 hour to 2 hours at 70 DEG C-80 DEG C; adding the furfuryl alcohol, and reacting for 1 hour to 2 hours at 90 DEG C-100 DEG C; adding the 80-120 parts of dimethyl benzene, heating up, separating the water by adopting an oil-water separating device until the temperature reaches 155 DEG C-160 DEG C, and performing heat preservation for 1 hour to 2 hours to obtain the furan-modified cashew phenolic resin. The preparation method of the furan-modified cashew phenolic resin has the beneficial effects of remarkably improving boiling water resistance and heat resistance of the resin, having a practical application meaning in corrosion resistance and scaling prevention of a distillation-process seawater desalting heat transfer tube as well as steam blowing resistance of a heat exchanger tube bundle of a petrifaction system, and being applicable to paint base preparation of industrial heavy-duty anticorrosive coating.

Description

technical field [0001] The invention relates to the technical field of synthetic resin preparation, in particular to a preparation method of furan-modified cashew nut phenolic resin. The resin is used as a paint base and can be used in the production of industrial heavy-duty anti-corrosion coatings. Background technique [0002] Cardanol is a natural product extracted from cashew nut shells, which is a renewable natural resource with low price. Cardanol is a derivative of phenol. The meta-position of the phenolic hydroxyl group contains long-chain unsaturated alkanes. As a raw material for synthetic resins, it can play an internal plasticizing role in the resin and increase the flexibility of the resin. Its application value has attracted more and more attention. . Cardanol formaldehyde resin is the basis of cardanol modification, and it is mostly used in the fields of adhesives, friction materials, and ordinary coatings. However, it is used as a paint base in the field of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G8/28
Inventor 黄鑫闫志山黄先群
Owner 天津市中海科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap