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Device for preparing solid acrylic resin and method thereof

A technology of solid acrylic acid and equipment, applied in chemical instruments and methods, chemical/physical/physical chemical fixed reactors, chemical/physical/physical chemical processes, etc., can solve the difficulties of high viscosity transportation, stirring and heat and mass transfer and other problems, to achieve high heat transfer coefficient, large heat transfer area, and improve the effect of monomer conversion rate

Pending Publication Date: 2018-10-19
BOLIER CHEM YANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems of high-viscosity transportation, stirring and heat and mass transfer difficulties in the continuous bulk polymerization process, the present invention provides a kind of equipment and method for preparing solid acrylic resin using multi-stage series plug flow reactors and continuous bulk technology. The reaction process The temperature control is stable, the color of the obtained product is uniform, and the molecular weight distribution is small

Method used

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  • Device for preparing solid acrylic resin and method thereof
  • Device for preparing solid acrylic resin and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Add 20kg of methyl methacrylate, 16kg of 2-hydroxyethyl methacrylate, 13.5kg of butyl methacrylate, 0.5kg of methacrylic acid, and 3.5kg of n-dodecyl mercaptan in the batching tank 1 , initiator tert-butyl peroxybenzoate 0.05kg;

[0047] The mixed material passes through the metering pump 2 and enters the prepolymerization reactor 4 through the preheater 3 . The material is first heated to 60°C through the preheater 3, and the feed rate is 1000ml / hr. The pressure of the reaction system is ~0.45Mpa; the materials are completely filled in the three reactors.

[0048] The temperature of the three temperature control zones R11, R12, and R13 of the prepolymerization reactor 4 is controlled at 92°C, 98°C, and 102°C, respectively; the stirring speed of the reactor is 20rpm; the reaction time is 3.5hr.

[0049] The material passing through the prepolymerization reactor 4 has a conversion rate of 45%, and then enters the second reactor 5, and the three temperature control zone...

Embodiment 2

[0052] In batching tank 1, add methyl methacrylate 24.5kg, isobornyl methacrylate 24.5kg, methacrylic acid 1kg, molecular weight regulator n-dodecyl mercaptan 2.8kg, initiator tert-butyl peroxybenzoate 0.05kg;

[0053] The mixed material passes through the metering pump 2 and enters the prepolymerization reactor 4 through the preheater 3 . The material is first heated to 60°C through the preheater 3, and the feed rate is 1000ml / hr. The pressure of the reaction system is ~0.55Mpa; the materials are completely filled in the three reactors.

[0054] The temperature of the three temperature control zones R11, R12, and R13 of the prepolymerization reactor 4 is controlled at 92°C, 96°C, and 100°C, respectively; the stirring speed of the reactor is 25rpm; the reaction time is 3hr.

[0055] The material passing through the prepolymerization reactor 4 has a conversion rate of 43%, and then enters the second reactor 5, and the three temperature control zones R21, R22, and R23 of the s...

Embodiment 3

[0058] In batching tank 1, add methyl methacrylate 2.5kg, styrene 13kg, α-methylstyrene 16.5, isooctyl acrylate 1kg, molecular weight regulator n-dodecyl mercaptan 6.2kg, initiator benzene peroxide Tert-butyl formate 0.065kg;

[0059] The mixed material passes through the metering pump 2 and enters the prepolymerization reactor 4 through the preheater 3 . The material is first heated to 60°C through the preheater 3, and the feed rate is 800ml / hr. The pressure of the reaction system is ~0.60Mpa; the materials are completely filled in the three reactors.

[0060] The temperature of the three temperature control zones R11, R12, and R13 of the prepolymerization reactor 4 are respectively controlled at 92°C, 95°C, and 98°C; the stirring speed of the reactor is 28rpm; the reaction time is 3.5hr.

[0061] The material passing through the pre-polymerization reactor 4 has a conversion rate of 46%, and then enters the second reactor 5. The three temperature control zones R21, R22, and...

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Abstract

The invention relates to a device for preparing a solid acrylic resin and a method thereof, solving a problem of difficulty of high viscosity conveying, stirring and heat and mass transfer in a continuous bulk polymerization process. The method is based on a process formula, cooperated with a corresponding device, without adding a solvent, mixes acrylic and methacrylic monomers, vinyl monomers andfunctional monomer mixtures in the presence of organic peroxides and molecular weight regulators, through a plurality of plug flow reactors connected in series and independently controlling temperature, and performs copolymerization reaction. An obtained product has uniform color and a small molecular weight distribution.

Description

technical field [0001] The present invention relates to the preparation method of acrylic resin, in particular, relates to a kind of equipment and method for preparing solid acrylic resin. Background technique [0002] Solid acrylic resin is a copolymer synthesized from vinyl monomers such as (meth)acrylate, (meth)acrylic acid, styrene, and other functional monomers as main raw materials. This kind of resin has the characteristics of light color, color retention, gloss retention, weather resistance, corrosion resistance and pollution resistance, and is widely used in automobiles, aircrafts, machinery and electronics, furniture, construction, leather, wood, papermaking, printing and dyeing, industrial plastics and daily products Finishing and other fields. [0003] The polymerization process of acrylic resin mainly includes: solution polymerization, suspension polymerization, emulsion polymerization and bulk polymerization, and each polymerization process has its own advanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/18C08F220/14C08F220/20C08F220/18C08F220/06C08F212/08C08F212/12C08F2/01
CPCB01J19/1862C08F2/01C08F212/08C08F220/14C08F212/12C08F220/06C08F220/1808C08F220/20C08F220/1804C08F220/18
Inventor 舒纪恩姜笃兵
Owner BOLIER CHEM YANGZHOU
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