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TDI & MDI

  • Origin: Russia
  • Supply Type: in stock
  • Processing Time: Miscellaneous
  • Min Order: 20

Supplier Info.

  • Employees Total 5-10
  • Annual Revenue US$1 Million - US$2.5 Million
TDI is a member of isocyanates which are widely used today in the manufacture of polyurethane. TDI Application Flexible foams – used for the fabrication of bedding, furniture, automotive seating, flexible packaging and carpet underlay; this is the largest market application for TDI “Foamed-in-place” polyurethane plastics – ranging from soft and sponge-like to hard and porous for use in furniture, packaging, insulation and boat building Polyurethane coatings – used on leather, wire, tank linings and masonry Elastomers – used to produce adhesives, films and linings, and abrasive wheels and other mechanical items that require abrasion and solvent resistance Rigid, “pour-in-place” foams – for use in appliances, and, in smaller amounts, packaging Urethane sealants – used in construction applications Cast elastomers – for production of articles such as roller blade wheels • Methylene diphenyl diisocyanate Methylene diphenyl diisocyanate, most often abbreviated as MDI, is an aromatic diisocyanate. It exists in three isomers, 2,2'-MDl,2,4'-MDI, and 4,4'-MDI The first step of the production of MDI is the conversion of Benzene into nitrobenzene. Next, in the presence of a suitable catalyst, aniline is produced. Then, Aniline is reacted with Formaldehyde in the presence of Hydrochloric acid 32%Wt., produce PMA (Polymeric di-phenyl Methyl Amine). Finally, by the effect of carbonyl chloride, PMA produce MDI. MDI Application MDI is reacted with Polyol to produce polyurethane. These rigid polyurethane foams are good thermal insulators and are used in nearly all freezers and refrigerators worldwide, as well as buildings. It is also used in industry-leading adhesives, leather and automotive industries such as car seats and dashboards and car interior panels, and the production of bedding and footwear of various types of shoes.
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