Preparing method for rosin pentaerythritol

A technology of rosin pentaerythritol ester and pentaerythritol, which is applied in the field of preparation of rosin pentaerythritol ester, can solve the problems of limited popularization and application of rosin pentaerythritol ester, low purity of rosin pentaerythritol ester, and achieve the effect of high softening point and high purity

Inactive Publication Date: 2016-08-17
FINJET CHEM IND LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of the rosin pentaerythritol ester that this method makes is generally lower, makes the popularization and application of rosin pentaerythritol ester restricted

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This rosin pentaerythritol ester comprises the following preparation steps:

[0020] A, raw material 100kg rosin is evacuated and decompressed and distilled to obtain refined rosin;

[0021] B. Under stirring, put the refined rosin obtained in step A into the reactor, and add 0.0001 kg of sodium phosphite, 5 kg of xylene, 4,4`-thiobis(6-tert-butyl-3 - methyl phenol) 0.001kg, pentaerythritol 15kg and cobalt acetate 0.02kg, then under the pressure of 0MPa, heated to 220°C, stirred at constant temperature, and reacted for 2 hours;

[0022] C. Put the material obtained in step B into a distillation tower, and carry out distillation at a pressure of 0 MPa and a temperature of 280° C. to obtain rosin pentaerythritol ester.

[0023] The softening point of the rosin pentaerythritol ester prepared in this example is as high as 120° C., and the purity is as high as 98%.

Embodiment 2

[0025] This rosin pentaerythritol ester comprises the following preparation steps:

[0026] A, raw material 100kg rosin is evacuated and decompressed and distilled to obtain refined rosin;

[0027] B. Under stirring, put the refined rosin obtained in step A into the reactor, and add 0.00016 kg of sodium phosphite, 6 kg of xylene, 4,4`-thiobis(6-tert-butyl-3 - methyl phenol) 0.0015kg, pentaerythritol 25kg and cobalt acetate 0.017kg, then under the pressure of 0.01MPa, heated to 200°C, stirred at constant temperature, and reacted for 4 hours;

[0028] C. Put the material obtained in step B into a distillation tower, and carry out distillation at a pressure of 0.01 MPa and a temperature of 270° C. to obtain rosin pentaerythritol ester.

[0029] The softening point of the rosin pentaerythritol ester prepared in this example is as high as 125° C., and the purity is as high as 98.1%.

Embodiment 3

[0031] This rosin pentaerythritol ester comprises the following preparation steps:

[0032] A, raw material 100kg rosin is evacuated and decompressed and distilled to obtain refined rosin;

[0033] B. In the stirring state, put the refined rosin obtained in step A into the reactor, and add 0.0002kg of sodium phosphite, 8kg of xylene, 4,4`-thiobis(6-tert-butyl-3 - methyl phenol) 0.002kg, pentaerythritol 20kg and cobalt acetate 0.01kg, then under the pressure of 0.005MPa, heated to 205°C, stirred at constant temperature, and reacted for 3 hours;

[0034] C. Put the material obtained in step B into a distillation tower, and carry out distillation at a pressure of 0.005 MPa and a temperature of 275° C. to obtain rosin pentaerythritol ester.

[0035] The softening point of the rosin pentaerythritol ester prepared in this example is as high as 120° C., and the purity is as high as 98.5%.

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

PropertyMeasurementUnit
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing rosin pentaerythritol ester, which belongs to the technical field of rosin deep processing. The present invention uses the following raw materials in parts by weight: rosin 100, sodium phosphite 0.0001-0.0002, xylene 5-8, 4,4`-thiobis(6-tert-butyl-3-methylphenol) 0.001-0.002, Pentaerythritol 15-25 and cobalt acetate 0.01-0.02; including refining rosin first, adding sodium phosphite, xylene, 4,4`-thiobis(6-tert-butyl-3-methylphenol), Pentaerythritol and cobalt acetate are then heated to 200°C to 220°C at 0MPa to 0.01MPa, stirred at constant temperature, and reacted for 2 hours to 4 hours, and then distilled at 0MPa to 0.01MPa and 270°C to 280°C. The product rosin pentaerythritol ester prepared by the invention has the advantages of high softening point and high purity.

Description

technical field [0001] The invention belongs to the technical field of rosin deep processing, and in particular relates to a preparation method of rosin pentaerythritol ester. Background technique [0002] Rosin pentaerythritol ester is an irregular transparent flake solid with excellent heat resistance, aging resistance and good stability, good compatibility and solubility, good surface resistance and good color retention, as a tackifier in Adhesive industry is widely used. [0003] The traditional preparation method of pentaerythritol ester of rosin is that rosin or light-colored rosin is esterified with pentaerythritol after being modified, and then prepared by distillation. The purity of the rosin pentaerythritol ester prepared by this method is generally low, so that the popularization and application of the rosin pentaerythritol ester is limited. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method fo...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
CPCC09F1/04
Inventor 叶旗周卓瑜
Owner FINJET CHEM IND LTD
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