CN103045097A - Preparation method of rosin glycerol ester - Google Patents

Abstract

The invention discloses a preparation method of a rosin glycerol ester. The rosin glycerol ester is prepared from 100 parts of rosin, more than 50 parts of glycerol, and 1.5-2.6 parts of zinc oxide; after rosin reacts with glycerol under the action of a catalyst, and the rest glycerol is removed at a high temperature in vacuum so as to obtain a rosin glycerol ester product provided by the invention. The preparation method has the advantages of low reaction temperature, easiness in control, in high reaction speed improved by 3-5 times, low product production cost and good quality.

Description

The ester gum preparation method

Technical field

The invention belongs to a kind of rosin deep processing method.

Background technology

Rosin is the renewable resources of China's abundant, and annual production reaches more than 60 ten thousand tons, ranks first in the world.It has unique chemical structure and mulitiple chiral centers by a series of resin acid compositions, and the carboxyl in the structure and phenanthrene ring frame can carry out a series of chemical modification, are a kind of natural chiral source materials.Rosin can obtain a series of deep processed products through chemical modification, is widely used in the every field in the daily life, plays very important effect in the national economic development.The value ratio raw material rosin of these deep processed products is mentioned 2-10 doubly, even decades of times, and China mainly earns foreign exchange with outlet gum resin at present.China is the country of gum resin export volume maximum, accounts for about 60% of volume of world trade, and many developed countries export go back to again China from China's imported raw material rosin back through product after a series of deep processings, and are very unfavorable to conservation of resources and the Economic development of China.China is 35% to rosin deep processing and utilization rate, and by contrast, the developed country such as American-European near 100%, exists very large gap to the deep processing and utilization rate of rosin.Therefore, carry out Abietyl modified research, develop meet the China market demand deep processing rosin product not only to country and the development of local economy, and to the reasonable development of China's forest resourceies and utilization and at present industrial energy saving lower consumption and all be of great significance.Resinous acid as the rosin main component is a kind of two chemical reactivity centers that have---the chemically reactive substance of carboxylic acid and two keys, just can introduce atom or group at quarter by these two chain carriers, thereby give rosin and have desirable character, reach the purpose of modification, thereby change the rational performance of rosin, greatly expand the Application Areas of rosin, formed miscellaneous rosin derived product, be widely used in pressure sensitive adhesive, tackiness agent industry.Make multiple film glue, decorating glue, label glue, adhesive tape glue, hot melt adhesive, sanitary towel glue, non-setting adhesive, EVA hot melt adhesive, polyamide hot, seal gum, varnish paint vehicle, bookbinding glue, pipeline glue etc.In recent decades, rosin deep processing aspect, its product category, preparation method are all without large progress; There are the deficiencies such as sluggish length consuming time in prior art products preparation method.

Through Chinese publication retrieval, find 16 of relevant patents of invention, 4 of utility model patents the scheme identical with present patent application of not finding.

Summary of the invention

The object of the invention is to: for the deficiencies in the prior art, propose a kind of ester gum preparation method.

Ester gum preparation method of the present invention comprises that rosin and glycerine react under catalyzer, high-temperature vacuum is removed residue glycerine; It is characterized in that: by weight, material ratio is, 100 parts of rosin, glycerine are no less than 50 parts, 1.5-2.6 parts of catalyzer of zinc oxide, and its technique may further comprise the steps:

60-70 parts of heating and meltings of rosin heat up 250 ℃,

Add 30-40 parts of rosin, add 1.5-2.6 parts on catalyst oxidation zinc, add glycerine and be no less than 50 parts, in 150-160 ℃ of scopes, stirring reaction 1-2 hours;

Under 270-280 ℃, vacuumize 30 minutes, both ester gum product of the present invention.

The present invention's beneficial effect compared with prior art: by strengthening catalyzer, making it speed of response accelerates more than 3-5 times, by rich polyxol method, but react under the lesser temps, make reaction become steadily, relax, be easy to control, thereby the production cycle is shortened greatly, and production and plant efficiency greatly improve, and production cost reduces; And, the colory product of acquisition look shallow.

Embodiment

Embodiment

Ester gum preparation method of the present invention by strengthening catalyzer, makes it speed of response and accelerates 3-5 times, by rich polyxol method, reaction is become steadily be easy to control, thereby the production cycle is shortened greatly, production and plant efficiency greatly improve, and production cost reduces; And, the colory product of acquisition look shallow.

Ester gum preparation method of the present invention comprises that rosin and glycerine react under catalyzer, high-temperature vacuum is removed residue glycerine; It is characterized in that: by weight, material ratio is, 100 parts of rosin, glycerine are no less than 50 parts, 1.5-2.6 parts of catalyzer of zinc oxide, and its technique may further comprise the steps:

60-70 parts of heating and meltings of rosin heat up 250 ℃,

Add 30-40 parts of rosin, add 1.5-2.6 parts on catalyst oxidation zinc, add glycerine and be no less than 50 parts, in 150-160 ℃ of scopes, stirring reaction 1-2 hours;

Under 270-280 ℃, vacuumize 30 minutes, remove residue glycerine; Both ester gum product of the present invention.

The products obtained therefrom quality index reaches following index:

Claims (1)

1. ester gum preparation method of the present invention comprises that rosin and glycerine react under catalyzer, and high-temperature vacuum is removed residue glycerine; It is characterized in that: by weight, material ratio is, 100 parts of rosin, glycerine are no less than 50 parts, and 1.5-2.6 parts in zinc oxide is made catalyzer, and its technique may further comprise the steps:

60-70 parts of heating and meltings of rosin heat up 250 ℃,

Add 30-40 parts of rosin, add 1.5-2.6 parts on catalyst oxidation zinc, add glycerine and be no less than 50 parts, in 150-160 ℃ of scopes, stirring reaction 1-2 hours;

Under 270-280 ℃, vacuumize 30 minutes, both ester gum product of the present invention.