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Product Group
Chloroprene Rubber

SNR242

Addtime: 2017-6-26

 SURPREN TM SNR242

Introduction

Chloroprene rubber SNR242 is high bond strength, it is obtained by mercaptan modified and Chloroprene monomer by emulsion polymerization with high rate of crystallization. It can be seen as equivalent to Dupont AD-20 of the United States.

Characteristics

l  Fast rate of crystallization and stronger cohesion;

l  Medium viscosity among the SNR24- series and can be dissolved in toluene or mixed solvents;

l  Better solubility and uniformity than CR244 and good storage stability;

l  Adhesive cements prepared by SNR242 is light in color and high bonding strength, quick good grips, easy handling, adhesion layer to keep a long time;

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

l  SN242 can be divided into SNR242A and SNR242B, SNR242A is closer to A90 and can be used as applicable grade of preparing grafted adhesive; SNR242B is closer to AD-20, mainly preparing decoration adhesive and so on.

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

Typical property

Item

SNR242

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

SN242A

34 - 40

SN242B

41 - 52

Mass fraction of volatiles,   wt. %

≤ 1.3

Mass fraction of ash,    wt. %

≤ 1.0

Comparable grades

SNR242A   

Denka, Japan:         A-90

Lanxess, Germany:    320

SNR242B

Dupont, American:    AD-20

Lanxess, Germany:    320

Application

SNR242, which is a basic raw material for preparing adhesive cements, can be used alone or combination with other types is the most typical grade of preparing adhesive. Adhesive is suitable for bonding of the shoe industry, rubber leather, wood, metal and construction materials.

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