A special device for preparing C9 petroleum resin by thermal polymerization and a method for preparing C9 petroleum resin
A technology of carbon 9 petroleum resin and special device, which is applied in the synthesis process of carbon 9 petroleum resin and the synthesis field of carbon 9 petroleum resin, can solve the problems of poor product chromaticity and long polymerization time of the synthesis process, and achieve the effect of improving chromaticity
Active Publication Date: 2018-08-17
NANJING UNIV
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Problems solved by technology
[0004] The present invention mainly aims at the present situation that the existing thermal polymerization C9 resin synthesis process has long polymerization time and poor product chroma, and provides a new C9 petroleum resin process with light product chroma and adjustable softening point and a special device for the process
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Embodiment 1～8
[0022] The C9 resin oil raw material (containing 0.5wt% DLTP antioxidant) is injected in the reactor 4 through nitrogen pressure, discharges the air in the reactor as far as possible, is filled with liquid raw material in the reactor, opens circulation pump, is warming up to given temperature at React under a given nitrogen pressure of 2 MPa. After the reaction is over, use a heat exchanger to cool down. The liquid material is released through nitrogen pressure, and the C9 resin solid is obtained by vacuum distillation. The precision of the used filter core tube in the specific embodiment, circulation ratio, temperature, the impact of process parameters such as reaction time on the resin product quality, see table .1 for details.
[0023] Reference comparative example: for comparison with the above examples, the same C9 resin oil raw material (containing 0.5 wt% DLTP antioxidant) was used to synthesize C9 resin in a tank reactor. The air in the reaction kettle was replaced wit...
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Abstract
The invention provides a special device for preparing C9 petroleum resin through thermal polymerization, which comprises a pressure-proof raw material storage tank 1 as shown in the specification, wherein the raw material storage tank 1 is provided with a feed port 2 and a nitrogen inlet pipe 3; a discharge port 11 is formed in the bottom of the raw material storage tank 1 and is connected with a reactor 4; the reactor 4 is cylindrical; a metal filter element pipe 5 is arranged at the center of the reactor 4; the discharge port 11 of the raw material storage tank 1 is connected with the metal filter element pipe 5; the bottom of the reactor 4 returns to the metal filter element pipe 5 through a pipeline, a circulating pump 6 and a heat exchanger 7 to form a reaction material cycle; an exhaust port 8 for feeding during starting is formed in the pipeline at the upper part of the metal filter element pipe 5; and a product outlet 9 is formed in the pipeline at the bottom of the reactor 4. A C9 resin oil raw material is added into the reactor from the raw material storage tank, reacts for 2-5h at 190-255 DEG C and 2Mpa nitrogen pressure and is then cooled, and reactants are discharged and treated by reduced pressure distillation to obtain C9 petroleum resin solids. The preparation method provided by the invention has low reaction temperature, and the prepared petroleum resin is relatively light in color.
Description
Technical field: [0001] The invention relates to a method for synthesizing C9 petroleum resin, belonging to the field of fine chemicals, and in particular to a synthesis process for producing C9 petroleum resin with light chroma and variable softening point by thermal polymerization. Background technique: [0002] The components of C9 aromatics are complex, including unsaturated olefins such as styrene, methylstyrene, styrene propylene, cycloolefins, and indene. In 2014, the by-product C9 aromatics produced by cracking ethylene units in my country was about 2 million tons, of which about 900,000 tons of C9 aromatics were used to produce C9 petroleum resin. The molecular weight of C9 petroleum resin is generally 800-2500, and the softening point is 90-150°C. It can be used in the coating industry, adhesives, rubber industry and printing ink industry. poly) and thermal poly two. Cold Polymer C9 Resin Made of AlCl 3 or BF 3 Such Lewis acid catalyzed cleavage of double bonds...
Claims
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IPC IPC(8): C08F240/00C08F2/01B01J19/24
Inventor 高强许波连范以宁
Owner NANJING UNIV