CN103820029B - Preparation method for maleic anhydride rosin samarium resin - Google Patents

Abstract

The invention provides a preparation method for maleic anhydride rosin samarium resin which is prepared from the following materials in parts by weight: 100 parts of rosin, 5-15 parts of maleic anhydride, 5-10 parts of samarium oxide, and at least 20 parts of pentaerythrite. The technology comprises the following steps: heating and melting 60-70 parts of the rosin and heating up to the temperature of 180-200 DEG C; adding 5-15 parts of maleic anhydride at the temperature of 180-200 DEG C and reacting for 1.5-2 hours; adding 30-40 parts of the rosin, 5-10 parts of maleic anhydride at the temperature of 180-200 DEG C and reacting for 0.5-1 hour; adding at least 20 parts of pentaerythrite, stirring for condensation reaction for 2-3 hours within the temperature range of 150-160 DEG C; vacuunizing at the temperature of 270-280 DEG C for 3 hours to obtain the product. The preparation method has the advantages that the design is scientific and reasonable; the reaction speed is high; the reaction is mild and easy to control; the color of the product is light; the softening point reaches up to over 185 DEG C; the product quality is good; the production cost is reduced.

Description

Maleic anhydride-rosin samarium process for preparing resins

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 is made up of a series of resinous acid, and have unique chemical structure and mulitiple chiral centers, the carboxyl in 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 product through chemical modification, is widely used in the every field in daily life, plays very important effect in the national economic development.The value ratio raw material rosin of these deep processed products mentions 2-10 doubly, and even decades of times, current China mainly earns foreign exchange to export gum resin.China is the maximum country of gum resin export volume, and account for about 60% of volume of world trade, many developed countries are from China's imported raw material rosin, and after a series of deep processing, product exports go back to again China back, to the conservation of resources of China and Economic development very unfavorable.China is 35% to rosin deep processing and utilization rate, and by contrast, the developed countries such as America and Europe close to 100%, also exist very large gap to the deep processing and utilization rate of rosin.Therefore, carry out Abietyl modified research, develop meet 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 consumption reduction be all of great significance.Resinous acid as rosin main component is that one has two chemical reactivity centers---the chemically reactive substance of carboxylic acid and double bond, atom or group at quarter just can be introduced by these two chain carriers, thus imparting rosin has desired character, reach the object of modification, thus change the rational performance of rosin, greatly expand the Application Areas of rosin, defined miscellaneous rosin derivative product, be widely used in pressure sensitive adhesive, tackiness agent industry.Manufacture multiple film glue, decorating glue, trademark adhesive, 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 is the deficiencies such as sluggish length consuming time in prior art products preparation method.

Retrieve through Chinese publication, find Invention patent 19, do not find the scheme identical with present patent application.

Summary of the invention

The object of the invention is to: for the deficiencies in the prior art, propose a kind of maleic anhydride-rosin samarium process for preparing resins.

Maleic anhydride-rosin samarium process for preparing resins of the present invention, is characterized in that: material ratio is, rosin 100 parts, MALEIC ANHYDRIDE 5-15 parts, Samarium trioxide 5-10 parts, and tetramethylolmethane is no less than 20 parts, and its technique comprises the following steps:

Rosin 60-70 parts of heating and meltings, heat up 180-200 DEG C,

Add MALEIC ANHYDRIDE 5-15 parts, 180-200 DEG C, react 1.5-2 hours;

Add rosin 30-40 parts, Samarium trioxide 5-10 parts, 180-200 DEG C, react 0.5-1 hour;

Add tetramethylolmethane and be no less than 20 parts, within the scope of 150-160 DEG C, stir and carry out condensation reaction 2-3 hours;

At 270-280 DEG C, vacuumize 3 hours, both obtain product.

Product of the present invention has lighter color, softening temperature high, is applied to the industrial sectors such as paint, ink, synthetic resins, tackiness agent, electronics, chemical industry.

The present invention's beneficial effect compared with prior art: design science is reasonable, speed of response is fast and relax, be easy to control, product look shallow, softening temperature up to more than 210 DEG C, quality is good, the advantages such as production cost reduction.

Embodiment

Embodiment: maleic anhydride-rosin samarium process for preparing resins of the present invention, is characterized in that: material ratio is, rosin 100 parts, MALEIC ANHYDRIDE 5-15 parts, Samarium trioxide 5-10 parts, and tetramethylolmethane is no less than 20 parts, and its technique comprises the following steps:

Rosin 60-70 parts of heating and meltings, heat up 180-200 DEG C,

Add MALEIC ANHYDRIDE 5-15 parts, 180-200 DEG C, react 1.5-2 hours;

Add rosin 30-40 parts, Samarium trioxide 5-10 parts, 180-200 DEG C, react 0.5-1 hour;

Add tetramethylolmethane and be no less than 20 parts, within the scope of 150-160 DEG C, stir and carry out condensation reaction 2-3 hours;

At 270-280 DEG C, vacuumize 3 hours, both obtain product.

Products obtained therefrom quality index reaches following index:

Claims (1)

1. a maleic anhydride-rosin samarium process for preparing resins, is characterized in that: material ratio is, rosin 100 parts, MALEIC ANHYDRIDE 5-15 parts, Samarium trioxide 5-10 parts, and tetramethylolmethane is no less than 20 parts, and its technique comprises the following steps:

Rosin 60-70 parts of heating and meltings, heat up 180-200 DEG C,

Add MALEIC ANHYDRIDE 5-15 parts, 180-200 DEG C, react 1.5-2 hours;

Add rosin 30-40 parts, Samarium trioxide 5-10 parts, 180-200 DEG C, react 0.5-1 hour;

Add tetramethylolmethane and be no less than 20 parts, within the scope of 150-160 DEG C, stir and carry out condensation reaction 2-3 hours;

At 270-280 DEG C, vacuumize 3 hours, obtain product.