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Preparation method of high-viscosity rosin resin

A rosin resin and high-viscosity technology, applied in the field of tackifying resins, can solve the problems of low viscosity, difficult use, inconvenient use for downstream users, etc., and achieve the effect of convenient use and high viscosity

Inactive Publication Date: 2010-02-17
张家港市阳光化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The viscosity of dehydrated malic acid resin is relatively high, but its softening point is too high, which makes it very inconvenient for downstream users to use
Visible, the problem that existing rosin resin exists is: either viscosity is low, or just very difficult when reusing

Method used

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  • Preparation method of high-viscosity rosin resin

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Embodiment Construction

[0011] The technical solution of the present invention will be further described below in conjunction with specific embodiments.

[0012] The preparation method of the high-viscosity rosin resin comprises the following raw materials in percentage by weight: 85% of masson pine extra-grade rosin, 2.8% of fumaric acid (also known as fumaric acid), and 12.2% of pentaerythritol. Add 85% (weight) rosin into the melting kettle and heat to 230°C to melt. Then inhale in the reactor, cool down to 195°C, add 2.8% (weight) of fumaric acid, heat preservation reaction, when the softening point reaches 90-95°C, add 12.2% (weight) of pentaerythritol, heat up to 278°C, heat preservation React until the acid value is ≤16mg / g and the softening point reaches 110-115°C, then dealcoholization, granulation, and packaging. The technical indicators of the produced rosin resin are: acid value 15.62mg / g, softening point (ring and ball method) 113°C, viscosity 6900 centipoise / 150°C. The color (iron-cob...

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Abstract

The invention discloses a preparation method of high-viscosity rosin resin which reaches higher viscosity under the condition of a lower softening point. The high-viscosity rosin resin comprises the following raw materials by weight percent: 85-86 percent of rosin, 2.0-3.0 percent of fumaric acid and 12-13 percent of pentaerythritol. The preparation method comprises the following steps: dissolvingthe rosin and then sucking the rosin into a reaction kettle; cooling to 190 DEG C to 200 DEG C; adding the fumaric acid; reacting in a heat preservation mode; when the softening point reaches 90 DEGC to 95 DEG C, adding the pentaerythritol; heating to 275 DEG C to 280 DEG C; continuing reaction; and when the acid value is smaller than or equal to 16 mg / g and the softening point reaches 110 DEG Cto 115 DEG C, performing dealcoholization and granulation to obtain a finished product. The rosin resin prepared by the preparation method can be conveniently applied to adhesives, coatings, printingink and polyamide resin products.

Description

technical field [0001] The invention relates to a tackifying resin, in particular to a preparation method of a high-viscosity rosin resin mainly used in adhesives, paints, printing inks and polyamide resins. Background technique [0002] At present, the existing rosin resins on the market mainly include: rosin glyceride, rosin pentaerythritol fat, dehydrated malic acid resin and other products. Among them, the softening points of rosin glyceride and rosin pentaerythritol fat are lower, but their viscosity is also lower. The viscosity of dehydrated malic acid resin is relatively high, but its softening point is too high, which makes it very inconvenient for downstream users to use. Visible, the problem that existing rosin resin exists is: either viscosity is low, or just very difficult when reusing. Contents of the invention [0003] The purpose of the present invention is to provide a kind of preparation method of the high-viscosity rosin resin with higher viscosity but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
Inventor 戴仕元丁引征
Owner 张家港市阳光化工有限公司
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