Producing method for high softening point polymer resin

Abstract

One kind of soften some production methods of offices and rosins high, including get together, washing and distillation process, and refined, film-making, pack etc.. Law this for raw materials, the petrol is solvents, drip and add the strong sulphuric acid under cooling the environment with rosin, carry on cation polyreaction, get and gather the body resinic acid fat liquid two times, through clarifying, separation: Worth 6.5 to pH, get and wash washing with the hot water into the tower with the solid carbonic acid ammonium neutralization material liquid, fat liquid reach heat up in a steamer tower again, steam appear petrol, is it get rosins together to produce to pay attention to divide, and separate rosin / retinol mixture, mixture divide into person who congeal, win fractional distillation rosin or soften some 861 resin of 78 deg.C; And the one that isolate gets rosins together except that the drum is packed directly, can enter the refined cauldron, it is single to add the suitable resinic acid, the ones that heated and got exquisity high and softenned a bit got rosing together.

Description

technical field [0001] The invention relates to a production method of polymerized rosin, in particular to a production method of high softening point polymerized rosin mainly used in food and food packaging industry. Background technique [0002] Polymerized rosin is a kind of transparent amorphous solid resin mainly containing dimer resin acid through cationic polymerization reaction with rosin as raw material. It belongs to the modified product of secondary processing of rosin. Compared with the raw material rosin, it has the characteristics of light color, high softening point, non-crystallization, and non-oxidation. Agents and additives are widely used. The softening point of polymerized rosin is an important parameter affecting the performance of its products, which depends on the content of dimers, that is, the degree of polymerization. According to the different catalytic systems and solvents, there are many methods for the preparation of polymerized rosin, and the...

AI Technical Summary

Problems solved by technology

Obviously, the use of aromatic hydrocarbon solvents will make the production environment harsh and cause deep pollution; although its yield is high, the dimer content is low, only 18.7%; what is more important is that the patent document discloses the experimental The preparation method of laboratory test, solvent: the amount of rosin solution of rosin=2:1~1:1 is 200 grams, the highest case is 2000 grams

Obviously, its technology is not suitable for large-scale industrial production. It will inevitably cause defects in product quality

Images