Pmma

[CH₂C(CH₃)(COOCH₃)]ₙ · Variable (polymer)

[CH₂C(CH₃)(COOCH₃)]ₙ

Optical-grade transparent thermoplastic (acrylic glass)

Molecular Weight

Variable (polymer)

State

Solid

Catalyst

Azo compounds or Peroxid

Reactor

Cast sheet (batch) or ex

Olefinverbund Integration

Inputs

Methyl Methacrylate

→

Product

Pmma

→

Outputs

Windows, Optical

Chemistry & Engineering

Reaction	`Free radical polymerization`
Thermodynamics	Exothermic
Catalyst	Azo compounds or Peroxides
Reactor class	Cast sheet (batch) or extrusion
Note	High optical clarity (‚Acrylic Glass‘).

Applications

Windows and skylights (aircraft, buildings)
Lighting fixtures
Signage and displays
Medical devices and dental materials

Extraterrestrial Production Pattern

MMA purification and inhibitor removal
Bulk or suspension polymerization
Thermal or peroxide initiation at 60-100°C
Cast sheet or extrusion/injection molding grades

Reaction Diagram

n CH2=C(CH3)COOCH3 -> [-CH2-C(CH3)(COOCH3)-]n

Unit Operations

Process steps following chemical engineering unit operation principles

#	Operation	Description
1	MMA Purification	Remove inhibitor, add fresh initiator
2	Bulk Polymerization	Heat at 80-100°C with AIBN initiator
3	Syrup Stage	Partial polymerization to syrup (15-30%)
4	Sheet Casting	Cast between glass plates, cure at 60°C
5	Annealing	Heat treat to relieve stress
6	Finishing	Cut, polish to specification

S88 Batch Control Model

ISA-88 BatchML schema — simplified for educational purposes

<?xml version="1.0" encoding="UTF-8"?>
<!-- ISA-88 Batch Control Model for Pmma -->
<!-- Educational schema - simplified for demonstration -->
<BatchML xmlns="http://www.wbf.org/xml/B2MML-V0600">
  
  <ProcessCell ID="PMMA_PLANT_CELL">
    <Description>Process cell for Pmma production</Description>
    
    <Unit ID="PMMA_PLANT">
      <Description>Main synthesis unit</Description>
      
      <!-- Equipment Modules -->
      <EquipmentModule ID="PURIFIER">
        <Description>Purifier</Description>
      </EquipmentModule>
      <EquipmentModule ID="PREPOLYMERIZER">
        <Description>Prepolymerizer</Description>
      </EquipmentModule>
      <EquipmentModule ID="SYRUP_TANK">
        <Description>Syrup Tank</Description>
      </EquipmentModule>
      <EquipmentModule ID="CASTING_CELL">
        <Description>Casting Cell</Description>
      </EquipmentModule>
      <EquipmentModule ID="OVEN">
        <Description>Oven</Description>
      </EquipmentModule>
      <EquipmentModule ID="FINISHING">
        <Description>Finishing</Description>
      </EquipmentModule>
    </Unit>
  </ProcessCell>
  
  <MasterRecipe ID="PMMA_PLANT_RECIPE">
    <Description>Master recipe for Pmma</Description>
    <ProductID>PMMA</ProductID>
    
    <UnitProcedure ID="PMMA_PLANT_UP">
      <Description>Unit procedure for synthesis</Description>
      
      <Operation ID="OP_01">
        <Description>Operation 1</Description>
        <Phase ID="PURIFY">
          <Description>Purify phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_02">
        <Description>Operation 2</Description>
        <Phase ID="INIT_POLY">
          <Description>Init Poly phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_03">
        <Description>Operation 3</Description>
        <Phase ID="SYRUP">
          <Description>Syrup phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_04">
        <Description>Operation 4</Description>
        <Phase ID="CAST">
          <Description>Cast phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_05">
        <Description>Operation 5</Description>
        <Phase ID="ANNEAL">
          <Description>Anneal phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_06">
        <Description>Operation 6</Description>
        <Phase ID="FINISH">
          <Description>Finish phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
    </UnitProcedure>
  </MasterRecipe>
  
</BatchML>

Process CellPhysical grouping of all production equipment

UnitMajor equipment performing the synthesis

Equipment ModulesIndividual devices: reactors, columns, absorbers

PhasesLowest control level: REACT, SEPARATE, PURIFY

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