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Interview

4 December 2019г.

Increasing the Pace of Production, not Forgetting about the Environment

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Urea-formaldehyde resins of «KF-Zh» grade

Urea-formaldehyde resins of «KF-Zh» grade

UREA FORMALDEHYDE RESIN of “KF-ZH” grade

GOST 14231-88 (HS code 390 910 9000)

The resins are widely used in the process of production of plywood, gluing of furniture parts, joinery, for cored foundry mold, ground stabilization and also for press materials production, laminated plastics, plastic foam, adhesives, and coating of paper and textile processing.

Specifications

Physical configuration

homogeneous suspension from white to light-yellow color without foreign impurity

Mass fraction of dry residue, %

67±2

Mass fraction of free formaldehyde, %, no more than

0,9

Relative viscosity under (20,0±0,5) °С by viscosimeter B3-1 with nozzle 5,4 mm

20–40 (F)

40–60 (M)

15-30 (L)

Activity index of hydronium ions, рН

7,5–8,7

Gel time under 100°С

40–65

Resins miscibility with water under 20°С with ratio to volume basis resin: water=1:2

complete

Tensile strength at spalling plywood after maceration of samples in water during 24 hours, MPa, no less than

1,5

Density at 20°С, g/sm3

1,26–1,28

Freezing point, °С

minus (14-18)

Safety requirements: resins represent incombustible mixture, inexplosive aqueous suspension.

Transportation: in railroad tank car, truck tank, steel barrels ensuring the protection of resins quality in transit and storage.

 
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