OJSC Efremov Synthetic Rubber Enterprise

Ефремовский завод синтетического каучука

ГGOST

LOW-MOLECULAR WEIGHT CIS-BUTADIENE MODIFIED RUBBER SKDN-N(M)

TECHNICAL REQUIREMENTS

SKDN-N(M) is a liquid product of polymerization of butadiene under the action of a catalytic system based on nickel salts and organoaluminum compounds. It has improved adhesion.

SPECIFICATION
Properties Value for type Test method
Type 1 Type 2
Conditional viscosity, s 170 … 250 350 … 450 GOST 84020
Dynamic viscosity at 20°C, mPa·s 700 … 1040 1450 … 1880 Viscometry (according to Heppler)
Transparency, sm³, ≥ 100 Manufacturer's methods
Purity No rash
Loss of mass during drying, % wt. ≤ 0,5 GOST 19338
Acid Number,mg KOH/g ≤0,5 Manufacturer's method
Ash content, % wt. ≤0,2 GOST 19816.14
Color according to the iodometric scale, mg iodine/100 sm³ ≤5 GOST 19266
Antioxidant content, % wt.:
AO-300
or agidol-2 (type 2246)
or Irganox 1520L

0,5 … 0,9
0,2 … 0,5
0,1 … 0,4

Manufacturer's
methods

At the request of the consumer, the absence of an antioxidant in the product is possible (indicated in the certificate (passport) of quality).

GENERAL USE AND APPLICATIONS

Possesses high chemical and water resistance, low-temperature stability, is well soluble in aliphatic, aromatic hydrocarbons and ethers, combined with hydrocarbon and wood resins.

It is used for the manufacture of high-quality varnishes, paints, in the production of insulating, anti-corrosion, protective, decorative and protective coatings. Coatings based on SKDN-N(M) rubber are characterized by higher adhesion to metal, concrete and other structural materials compared to SKDN-N rubber.

SKDN-N(M) finds the widest application as a modifier for redispersible polymer powders (RPP), in particular, based on copolymers of vinyl acetate, ethylene, butyl acrylate, vinyl laurate and vinyl chloride, as well as copolymers of styrene with butadiene and butyl acrylate. Dry building mixtures prepared using modified RPP are characterized by increased adhesion to the base and water resistance. The maximum effect of increasing adhesion is achieved when using SKDN-N(M) grade 2 as a modifier.

At the request of the consumer, samples of SKDN-N(M) of both grades can be provided for testing both in the form of «dry» rubber and in the form of stable aqueous emulsions (dispersions) with a polymer content of at least 60% by weight.

PACKAGING AND TRANSPORT

- steel (volume 200 dm³);
- IBC (volume 1000 dm³);
- delivery in road tankers

SHELF LIFE

Three years from the date of manufacture.

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