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Product Group
Chloroprene Rubber

SN244

Addtime: 2017-6-26

 SURPREN TM SN244

Introduction

Chloroprene rubber SN244 is high bond strength, it is obtained by mercaptan modified and Chloroprene monomer by emulsion polymerization with high rate of crystallization, for using a Nairit recipe and process technology. It can be seen as equivalent to Dupont AD-40 of the United States.

Characteristics

l  Fast rate of crystallization and stronger cohesion;

l  The highest viscosity among the SN24- series;

l  Compared with CR244, has better solubility and uniformity;

l  Adhesive cements prepared by SN244 is light in color and storage stability;

l  Excellent bonding strength, quick grips, easy handling, the adhesion layer to keep a long time, can be dissolved in toluene or mixed solvents;

l  Good resistant to ozone, weather, oil, chemical corrosion and extension of the fine is not flammable;

l  The same applied properties as Dupont AD-40 of the United States.

Appearance
White or light yellow chips, with talcum as a release agent, no mechanical impurities.

Typical property

Item

SN244

Broodfield solution viscosity,  5% toluene solution, 25 ºC, mPa.s

76 - 115

Mass fraction of volatiles,   wt. %

≤ 1.3

Mass fraction of ash,    wt. %

≤ 1.0

Comparable grades

Dupont, American:    AD-40

Denka, Japan:         A-120

Lanxess, Germany:     350

Application

SN244, which is a basic raw material of preparing adhesive cements, can be used alone or combination with other types, preparing adhesive where a very higher tack is required. Adhesive is suitable for bonding of the shoe industry, rubber leather, wood, metal and construction materials.

 

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