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Dicyclopentadiene-rosin polymer and its preparation method and application

A technology of dicyclopentadiene rosin and cyclopentadiene rosin, which is applied in the directions of rosin adhesive, application, rosin coating, etc. Production and application limitations, etc., to achieve the effect of good ink flexibility, good grinding and wetting performance, and good outdoor weather resistance

Inactive Publication Date: 2008-09-03
山西省应用化学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Dicyclopentadiene resin contains a large number of unsaturated bonds, poor thermal stability, low oxidation stability, easy to continue to react during storage and use, resulting in poor solubility of the resin in organic solvents and compatibility with other resins poor sex
[0004] 2. Dicyclopentadiene resin and its hydrogenated products do not contain polar groups, and have poor binding ability with pigments and inorganic fillers when used, and the prepared inks, coatings, and adhesives have poor adhesion
[0008] 1. The preparation of hydrogenation modification of dicyclopentadiene requires nickel, palladium, platinum, rhenium, ruthenium and other noble metals as hydrogenation catalysts, and multi-step reactions are required to obtain the product, and the preparation cost is high
[0009] 2. The modified dicyclopentadiene resin has a darker color, which greatly limits the production and application of the resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 408g of rosin, 279g of 80% dicyclopentadiene fraction, put them into a 1L autoclave, raise the temperature to 160°C, start stirring, then raise the temperature to 250°C, the pressure reaches 1.0MPa, react for 9.5 hours, then reduce the pressure to 0.08Mpa, distill Go out unreacted matter, obtain 624g dicyclopentadiene rosin polymer.

[0047] It has been determined that the softening point of the product is 133°C, the acid value is 18mgKOH / g, the Gardner color number is 8, the viscosity is 530mPa·s, and the weight average molecular weight Mw=5230. This product is used in the preparation of inks and coatings.

Embodiment 2

[0049] Weigh 380g of rosin, 340g of 70% dicyclopentadiene fraction and 8.5g of maleic acid, put them into a 1L autoclave, raise the temperature to 160°C, start stirring, then raise the temperature to 240°C, the pressure reaches 0.9MPa, and react for 7.8 hours. Afterwards, the pressure was reduced to 0.08Mpa, and unreacted substances were distilled off to obtain 609g of dicyclopentadiene rosin polymer.

[0050] It is determined that the product has a softening point of 140°C, an acid value of 25 mgKOH / g, a Gardner color number of 9, a viscosity of 600 mPa·s, and a weight average molecular weight of Mw=6000. The product is used in the preparation of coatings and inks.

Embodiment 3

[0052] Weigh 432g of rosin, 264g of 65% dicyclopentadiene fraction, put them into a 1L autoclave, raise the temperature to 160°C, start stirring, then raise the temperature to 260°C, the pressure reaches 0.8MPa, react for 9 hours, then reduce the pressure to 0.08Mpa, distill Unreacted matter was removed to obtain 611 g of dicyclopentadiene rosin polymer.

[0053] It has been determined that the softening point of the product is 128°C, the acid value is 19mgKOH / g, the Gardner color number is 7, the viscosity is 460mPa·s, and the weight average molecular weight Mw=4680. The product is used in the preparation of inks and coatings.

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Abstract

The dicyclopentadiene-rosin polymer is prepared through heat polymerizing dicyclopentadiene and rosin, and has softening point of 110-140 deg.c, acid value 5-30 mgKOH / g, colorimetric number not greater than 9, and weight average molecular weight 3000-6000. after being dissolved in 2 time weight of flax seed oil, the solution has viscosity of 200-600 mPa .s at 25 deg.c. The present invention also provides the preparation process of the dicyclopentadiene-rosin polymer. The dicyclopentadiene-rosin polymer may find its wide application in ink, paint, adhesive, etc.

Description

technical field [0001] The invention relates to a dicyclopentadiene rosin polymer, a preparation method thereof, and applications in the fields of inks, paints, and adhesives. Background technique [0002] Ethylene by-product from petroleum cracking 5 Dicyclopentadiene (DCPD) is extracted from the by-product light benzene fraction of coal refining, which can be used to prepare dicyclopentadiene resin. Dicyclopentadiene resin is a thermoplastic hydrocarbon resin with relatively low weight-average molecular weight, molecular weight Mw=1000-5000, softening point 90-130°C, light color, soluble in benzene and other organic solvents, but dicyclopentadiene Diene resins cannot be directly used in the preparation of inks, coatings, and adhesives for the following reasons: [0003] 1. Dicyclopentadiene resin contains a large number of unsaturated bonds, poor thermal stability, low oxidation stability, easy to continue to react during storage and use, resulting in poor solubility of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C09F1/04C09D11/10C09D11/08C09D193/04C09J193/04C09D11/106
Inventor 马国章白国宝侯彩英张振荣
Owner 山西省应用化学研究所
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