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Rosin viscosified resin as well as preparation method and application thereof

A technology of tackifying resin and rosin, which is applied in the preparation of rosin tackifying resin and the field of rosin tackifying resin, and can solve problems such as poor compatibility and poor compatibility

Active Publication Date: 2013-03-13
普洱科茂林化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High softening point rosin resin is usually rosin resin prepared by reacting rosin with polyols, mainly pentaerythritol. The resin prepared by this method has good compatibility with EVA elastomer, but if it is necessary to further increase the softening point of the resin It is to use the double bond of rosin to add unsaturated carboxylic acid, introduce one or two carboxyl groups, and then esterify with polyol to prepare rosin tackifying resin, but the rosin tackifying resin prepared by this method is compatible with EVA elastomer. Poor tolerance, the higher the degree of addition of unsaturated carboxylic acid, the worse the compatibility of resin and EVA elastomer

Method used

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  • Rosin viscosified resin as well as preparation method and application thereof
  • Rosin viscosified resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of rosin tackifying resin, adopts following method to prepare:

[0024] (1) Weigh 700 grams of Indonesian rosin, crush it and put it into a distillation bottle, and add 0.7 grams of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester at the same time, Vacuumize, heat to a temperature of 240°C, observe the proportion of rosin steamed by the receiving bottle with a scale marked on it, and distill until the content of rosinic acid in the rosin is 10% by weight, stop the distillation and release the vacuum;

[0025] (2) Weigh 300 grams of rosin left in the distillation bottle after distillation in step (1), and then weigh 33 grams of pentaerythritol, 4,4'-thiobis(6-tert-butyl-3-methylphenol) Add 0.45 g into a four-necked flask, react at 280° C. for 9 hours under nitrogen protection, and discharge to obtain rosin resin.

[0026] Measured by the ring and ball method, the softening point of the rosin tackifying resin obtained in this embodi...

Embodiment 2

[0028] A kind of rosin tackifying resin, adopts following method to prepare:

[0029] (1) Weigh 700 grams of Indonesian rosin, crush it and put it into a distillation bottle, and add 0.7 grams of n-octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate at the same time , evacuated, heated to a temperature of 250°C, observed the proportion of steamed rosin in the receiving bottle with a marked scale, distilled until the content of rosinic acid in the rosin was 10% by weight, stopped the distillation and released the vacuum;

[0030] (2) Weigh 300 grams of rosin left in the distillation bottle after the distillation in step (1), then weigh 37.5 grams of pentaerythritol, and add 0.15 grams of polyalkylphenol disulfide compound into a four-necked flask, at 240°C under nitrogen protection After 24 hours of reaction, the rosin resin was obtained.

[0031] Measured by the ring and ball method, the softening point of the rosin tackifying resin obtained in this embodiment is 120° C...

Embodiment 3

[0033] A kind of rosin tackifying resin, adopts following method to prepare:

[0034] (1) Weigh 700 grams of Indonesian rosin, crush it and put it into a distillation bottle, and add 0.35 grams of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester at the same time, Vacuumize, heat to a temperature of 260°C, observe the proportion of rosin evaporated according to the receiving bottle with a marked scale, distill until the content of rosinic acid in the rosin is 16% by weight, stop the distillation and release the vacuum;

[0035] (2) Weigh 300 grams of rosin left in the distillation bottle after distillation in step (1), and then weigh 39 grams of pentaerythritol, 4,4'-thiobis(6-tert-butyl-3-methylphenol) Add 1.5 grams into a four-necked flask, react at 290° C. for 4 hours under nitrogen protection, and discharge the material to obtain rosin resin.

[0036] Measured by the ring and ball method, the softening point of the rosin tackifying resin obt...

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Abstract

The invention discloses a preparation method of rosin viscosified resin, and the preparation method comprises the following steps of: (1) adding rosin into a distillation flask, vacuumizing, heating and distilling at the temperature of 240-280 DEG C, so that part of rosin is distilled; and (2) adding the rest rosin in the distillation flask into a reaction flask, adding a catalyst and polyalcohol into the reaction flask under the inert gas protection condition, and reacting for 4-24 hours at the temperature of 240-290 DEG C, so that the rosin viscosified resin is obtained, wherein the rosin contains pinus latteri acid. According to the preparation method disclosed by the invention, the pinus latteri acid contained in the rosin component is utilized, and the pinus latteri acid is rosin binary acid, so that the molecular structure of the resin is increased and the aim of increasing the softening point of the rosin viscosified resin is achieved. Meanwhile, the invention also provides rosin viscosified resin prepared by adopting the preparation method disclosed by the invention, and the rosin viscosified resin has higher softening point and good compatibility with EVA (ethylene vinyl acetate) elastomer and can be better used for preparing hot melt glue.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a method for preparing a rosin tackifying resin, a rosin tackifying resin prepared by the method and uses of the obtained rosin tackifying resin. Background technique [0002] Rosin is a natural resource, and rosin and the resin prepared from it are important chemical raw materials, which are widely used in the fields of ink, coating and adhesive. [0003] Rosin is a mixture of resin acids with similar structures, containing double bonds and hydroxyl groups. People have used these groups of rosin for acute modification in order to broaden its application. [0004] Rosin tackifying resin is an important component of EVA hot-melt adhesives. It is a research direction to increase the softening point of rosin resin to improve the bonding strength of the glue. High softening point rosin resin is usually a rosin resin prepared by the reaction of rosin and polyols, mainly pentaerythritol. The ...

Claims

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Application Information

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IPC IPC(8): C09F1/04C09J193/04
Inventor 陈就记徐社阳兰庙龙
Owner 普洱科茂林化有限公司
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