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Project at a Glance

Contents on the CD Rom

  • Isocyanate is the functional group of atoms N=C=O (1 nitrogen, 1 carbon, 1 oxygen), not to be confused with the cyanate functional group which is arranged as OC=N.
  • Any organic compound which contains an isocyanate group may also be referred to in brief as an isocyanate. An isocyanate may have more than one isocyanate group. An isocyanate that has two isocyanate groups is known as a diisocyanate.
  • Diisocyanates are manufactured for reaction with polyols in the production of polyurethanes.
  • A monofunctional isocyanate of industrial significance is methyl isocyanate (MIC), which is used in the manufacture of pesticides.
  • The isocyanate group reacts with the hydroxyl functional group to form a urethane linkage. If a diisocyanate is reacted with a compound containing two or more hydroxyl groups (a polyol), long polymer chains are formed, known as polyurethanes.
  • The normal industrial route to the manufacture of diisocyanates, is to synthesise the desired molecular structure with amine functional groups at the positions to be occupied by the isocyanate groups. Reaction with phosgene replaces the amine groups with isocyanate groups.
  • Common methods for the synthesis of isocyanates in the laboratory are the Curtius rearrangement of acyl azides and the Lossen rearrangement of hydroxamic acids.
  • Isocyanates (NCO) are highly reactive species used in the motor vehicle repair, adhesives, polyurethane and coating industries.
  • Major applications of these isocyanates are in manufacture of flexible and rigid foams, spandex fibres, coatings, elastomers, adhesives, microcellular sponages, synthetic leather etc.
  • The non-polymeric applications of these isocyanates lie largely in the field of insecticides, herbicides and other biologically active compounds.
  • MDI is used mostly for rigid polyurethane foam manufacture, which are highly crosslinked cellular polymers with a closed cell structure; each bubble within the material has unbroken walls in order to restrict gas movement and thus have excellent thermal insulation.
  • The Isocyanate markets of Japan and Korea are tied up, but other Asian countries demand of TDI and MDI(Diphenylmethane Polyiisocyanate) was increased by 57,000m.t. and 77,000m.t. Most of increased portions were exported to Europe and USA.
  • As Asian market expands, Isocyanate manufacturers are concentrating on Asian market and try to expand market share.
  • The annual output of isocyanates in China is around 20000 tons, falling far short of the domestic market demand. The net import amount was 97700 tons , as high as 5.6 times the output that year and then it increased to    129,000 tons and reached 53,100 tons.
  • Methyl isocyanate (MIC) is one of the most reactive of all isocyanates and is rapidly degraded in aqueous medium. Because of its reactivity, MIC is used as an intermediate in the synthesis of N-methylcarbamate and N-methylurea insecticides and herbicides.
  • A compilation of case reports in industrial workers consistently noted skin and respiratory irritation in MIC exposed workers but no definitive case of sensitization. The mechanism of action for the pulmonary, skin, and eye effects is irritation, but the mechanism of action for the systemic effects is unknown.
Introduction
  • Isocyanate Chemical Category
  • Isocyanate
  • Methyl isocyanate
  • Isocyanates - Info
  • Methyl Isocyanate - Patient Information Sheet
  • Ontario Air Standards For Methyl Isocyanate
  • Isocyanate - Synthesis

MSDS

  • Safety data for poly[(phenyl isocyanate)-co-formaldehyde]
  • Isocyanate Activators, Hardeners, and Additives
  • Cyclohexyl isocyanate
  • Isocyanate Developing Solution
  • Polymethylene Polyphenylisocyanate
  • Roof Insulation Adhesive
  • Safety data for methyl isocyanate
  • 2-Phenylethyl isocyanate

Product

  • Isocyanate paints
  • Toluene Diisocyanates
  • PS-Isocyanate
  • Isocyanate - Technical Bulletin
  • Toluene Diisocyanates - Technical Sheet
  • 4-Trifluoromethylphenyl Isocyanate

Patent

  • Isocyanate Derivatizing Agent and Methods of Production and Use
  • Methyl Isocyanate Process
  • Organic Isocyanate Preparation
  • Isocyanate Preparation
  • Isocyanate Process for the Preparation of 1,3A,8-Trimethyl - 1,2,3,3A,8,8A - Hexahydro - Pyrrole (2,3-B) Indol-5 (3AS, 8AR) - Hepthylcarbamate
  • Process for the preparation of isocyanates
  • Isocyanate Production Procedure

Process and Technology

  • The Nature of Isocyanate to Wood Adhesion and the Locus of Resin Penetration
  • Process
  • A Mild and Simple Method for the Preparation of Isocyanates from Aliphatic
    Amines Using Trichloromethyl Chloroformate. Synthesis of an Isocyanate Containing an Activated Disulfide
  • Baxenden Chemicals Technology
  • Polyurethane Spray Technology
  • Soy Based Foam Technologies for Automotive Seating

Market

  • The demand for isocyanates in Russia exceeds the offer by twofold
  • 4 Majors are Controlling Isocyanate Market
  • Iran to start isocyanates production in Nov.
  • Present Status of Isocyanate Production and Demand
  • Isocyanates - Price
  • The demand for isocyanates in Russia exceeds the offer by twofold
  • Toluene Diisocyanate (TDI) Uses and Outlook
  • Production

Turnkey Provider

  • Turnkey Provider from India
  • Turnkey Provider from North Chicago
Uses
  • Isocyanates - Common Uses
  • Steam-Injection Pressing of Isocyanate-Bonded Aspen Flakeboards
  • Water Reducible Polyester Polyol
  • Novel Isocyanate Isocyanate-Reactive Adhesives for Structural Wood Based Composites (LVL)
  • Measured Airborne Isocyanate from Mixing and Brush and Roller Application of Isocyanate based 2-pack Paints
  • Assessment of Isocyanate Exposure During the Spray Application of Polyurethane Foam
  • Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets

Company Profiles

  • Company from Sweden
  • Company from North America
  • Company from China
  • Company from Mumbai
  • Company from Shanghai

Suppliers and Buyers

  • Chemical Industry
  • Isocyanate Selling leads
  • Isocyanate Suppliers
  • Suppliers of Isocyanate
  • Buyers

Consultants

  • Experts in Diphenylmethane-4,4'-Diisocyanate
  • Consultant from New Orleans
  • Consultant from Michigan
  • Consultant from California
  • Another Consultant from California

Guidelines

  • Controlling Isocyanate Hazards at Work
  • Guidelines for Safe Loading/Unloading
    Transportation Storage Of TDI and MDI
    in Bulk
  • A Guide to Spraying Isocyanate Containing Paints

Risk and hazards

  • Hazard Evaluation System and Information Service
  • Concise International Chemical Assessment Document
  • Spray-on urethane truck bed linings and isocyanate exposures
  • Safe Use of Isocyanates
  • Safe Work Procedures for Isocyanate-Containing Products
  • Chronic Toxicity Summary - Methyl Isocyanate

Report

  • Automotive Refinishing Industry Isocyanate Profile
  • Case Application
  • Legacy Report
  • Isocyanate - Induced Asthma In Michigan
  • Real Time Monitoring of Isocyanate Chemistry Using a Fiber - Optic FTIR Probe
  • Proposed Acute Exposure guidelines Levels
  • A Case of Occupational Asthma in Tunnel Workers Exposed to Isocyanates
 

 

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