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Carbamide-formaldehyde concentrate (CFC) TY 2181-032-00203803-2003

CFC is used as a semi-product for the production of urea formaldehyde, melamine-carbamide-formaldehyde resins and for carbamide treatment to resist slumping; it is used in woodworking and furniture industry for production of plywood, chipboards, etc.

 

Production: The CFC production method bases on catalytic oxidation of methanol to formaldehyde along with subsequent absorption of formaldehyde with carbamide solution.

Basic physical and chemical features:

Appearance

Homogenous viscous liquid

Mass share of total formaldehyde, %

58,0 ± 2,0

Mass share of carbamide, %

23,0 ± 2,0

Mass share of methanol, %, not exceeding

0,3

Concentration of hydrogen ions, pH

7,0 - 9,0

Buffer capacity, ml, not exceeding

20+

Mass share of dry residue during calcinations (ash content), %, not exceeding

0,5

Mass share of methylol groups, %, at least

25,0

Funnel viscosity at temperature (20±05) °С, by flow meter VZ-246 (nozzle 4 mm), s, not exceeding

80

Terms and periods of storage:

Storage temperature, °С

(+10 +30)

Warranty storage period (since the date of fabrication)

6 months

At low temperatures (down to -40, °С) CFC turns into paste (it gets sluggish). When it is heated in accordance with the requirements of specifications, it returns to the initial state. 

Transportation:

It is supplied in rail cars (model 15-1487-01).

Consumers of these products get considerable benefits.

The use of CFC in the technology of carbamide-formaldehyde resins makes it possible to:

  • Withdraw the product concentration stage from the technological process and reduce production expenditures;
  • Resolve the problem of disposal of formaldehyde containing waste waters, methanol and formaldehyde containing gas discharges;
  • Reduce expenditures for transportation by 40%, as CFC will be required by 1.6-2.2 times lass then formalin;
  • Reduce required carbamide by 25%;
  • Provide synthesis of low-toxic highly water-resistant resins with the spatial structure of polymers;
  • Ensure high quality of obtained carbamide-formaldehyde resins (with methanol content by 0.2%), fabricate particle boards of E1 emission class;
  • Reduce methanol discharges by several times in the process of pressing.