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Method for thermo-oxidative aging resistance and fluorescence elimination of C5 resin

An anti-thermal oxygen and anti-oxidant technology, applied in the field of chemistry, to achieve the effect of eliminating fluorescence and excellent protection

Active Publication Date: 2017-05-10
RIANLON
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no solution has been found to prevent the fluorescence of C5 petroleum resins

Method used

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  • Method for thermo-oxidative aging resistance and fluorescence elimination of C5 resin
  • Method for thermo-oxidative aging resistance and fluorescence elimination of C5 resin
  • Method for thermo-oxidative aging resistance and fluorescence elimination of C5 resin

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Embodiment 1-7

[0027] The preparation of C5 petroleum resin comprises the steps:

[0028] (1) First, obtain the polymerization reaction solution according to known techniques, that is, carry out rectification treatment on the C5 fraction to obtain the purified C5 fraction raw material, and then carry out rectification after thermal polymerization to obtain the C5 light component. The C5 light component before the polymerization reaction is Component raw material metering, then in the catalyst AlCl 3 or BF 3 The positive ion polymerization reaction is carried out under the reaction solvent toluene, and after the polymerization reaction is completed, the catalyst is washed out with alkaline water, and the waste water is separated to obtain a polymerization reaction liquid.

[0029](2) Then, using the method of the present invention, a certain weight of W is added to the polymerization reaction liquid h (relative to the C5 light component raw material weight before the polymerization reaction...

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Abstract

The invention relates to a method for thermo-oxidative aging resistance and fluorescence elimination of C5 resin. The method comprises steps as follows: after a polymerization reaction is finished, a catalyst is washed out with alkaline water, wastewater is separated, a certain quantity of toluene solutions of an antioxidant 330 and antioxidant S9228 complex are added to a polymerization reaction solution with stirring, then the solution is subjected to vacuum distillation at 200-250 DEG C until a polymerization reaction solvent and unpolymerized C5 light components are recycled completely, a certain quantity of benzotriazole ultraviolet light absorbers are added when the temperature is decreased to 170-180 DEG C, and C5 petroleum resin having off-white-light yellow appearance color and excellent thermo-oxidative aging resistance is obtained through forming. Meanwhile, the fluorescence phenomenon is eliminated under the synergistic effect of the antioxidants and benzotriazole ultraviolet light absorbers. The method solves the problems that C5 petroleum resin obtained with existing production technologies has deep appearance colors, poor thermo-oxidative aging resistance and fluorescence.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to an antioxidant system for protecting C5 resin from discoloration due to high-temperature thermal oxygen aging and maintaining stable performance and a method for eliminating fluorescence in the production and application of C5 petroleum resin. Background technique [0002] C5 fraction is a by-product of ethylene production units, accounting for about 10% to 14% of ethylene production. C5 petroleum resin is a kind of thermoplastic resin produced with C5 distillate as raw material through raw material pretreatment, polymerization, flash evaporation (or vacuum distillation) and other processes. It is an oligomer with a relative molecular mass between 300 and 3000. It has the characteristics of low acid value, good miscibility, water resistance and chemical resistance, good chemical stability in acid and alkali environment, and good viscosity adjustment and thermal stability. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L57/02C08K5/13C08K5/3475C08K5/526C08F240/00
CPCC08F240/00C08K5/13C08K5/3475C08K5/526C08L2201/08C08L57/02
Inventor 丁照宇汤翠祥
Owner RIANLON
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