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Chloroprene Rubber (CR)

Chloroprene Rubber (CR)

  Chloroprene rubber (CR) is a synthetic rubber that is also known by the trade name Neoprene. CR has a good balance of properties, including good chemical stability and usefulness over a wide temperature range. 

  CR has perfect mechanical properties and fatigue and tear resistances which are second only to those of NR, with excellent oil, chemical and heat resistances, low flammability, high ozone and weather resistance.


  CAS No.: 9010-98-4

  Series No.: CR121，

                    CR232，

                    CR244，

                    CR322

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  Chloroprene rubber (CR) is a synthetic rubber that is also known by the trade name Neoprene. CR has a good balance of properties, including good chemical stability and usefulness over a wide temperature range. 

  CR has perfect mechanical properties and fatigue and tear resistances which are second only to those of NR, with excellent oil, chemical and heat resistances, low flammability, high ozone and weather resistance.


  CAS No.: 9010-98-4

  Series No.: CR121，

                    CR232，

                    CR244，

                    CR322



  Polychloroprene Rubber CR121   


  Description:

   A sulfur-modified chloroprene rubber with medium crystallization rate, the density is 1.23. It has good resistance to tear and flexure. It is similar to Du Pont’s Neoprene GN and GNA and Denka’s PM-40.


  Application: For making rubber products such as conveyor belt, triangle

                        belt, v belt, synchronous belt and mining cable sheath, etc.


  Specification:

ITEM

INDEX

Mooney Viscosity

(ML100 ℃ 1 +4)

CR1211

CR1212

30 – 45

46 – 60

Mooney Scorch

(MSt 5 , min ) ≥

30

Tensile strength， MPa ≥

24

Modulus at 500％，MPa

1-5

Elongation at break ％ ≥

850

Volatile matter，％ ≤

1.2

Ash content，％ ≤

1.2

Appearance

Beige white chips

   


Packaging&Storage:

       Packed in bags, 25kg net weight each.

       Half a year below 25℃ in cool place from the date of production.



 Polychloroprene Rubber CR232   

Description:

    A xanthogen or dodecyl mercaptan modified polychloroprene rubber with medium crystallization rate. The density is 1.23. It has good heat resistance and high temperature stability. It is similar to Denka' s M-40 and Du Pont s neoprene W.


 Application:

   For making light- coloured rubber products, such as seals, dust covers, rubber rollers, liners, rubber dams and hose outer sheath, etc.


 Specification:

ITEM

INDEX

Mooney Viscosity

(ML100 ℃ 1 +4)

CR2321

CR2322

CR2323

35 – 45

46 – 55

According to

customer needs

Mooney Scorch

(MSt 5 , min ) ≥

11

11

Tensile strength，MPa ≥

12

12

Modulus at 500％，MPa

2-7

5-10

Elongation at break，％ ≥

750

550

Volatile matter，％ ≤

1.5

1.5

Appearance

Milk white chips

     


Packaging&Storage:

       Packed in bags, 25kg net weight each.

       One year below 20°C and half a year below 30°C from the date of production.



 Polychloroprene Rubber CR244   


  Description:

    A xanthogen or dodecyl mercaptan modified polychloroprene rubber with fast crystallization rate and high bonding strength at room temperature. The density is 1.23. It is similar to Denka' s A range such as A-90 and Du Pont' s neoprene AD range such as AD-20.


 Application:

   For making Chloroprene adhesives. The Chloroprene adhesives are used for bonding and self adhesion between rubber, leather, fiber, metal, wood and cement products, etc.


 Specification:

ITEM

INDEX

Viscosity in 5%

toluene solution,

mPa.s

CR2440

13-24

CR2441

25-34

CR2442

35-53

CR2443

54-75

CR2444

76-115

CR244A

116-140

CR244B

≥141

Peel ％ ≥

90

Volatile，％ ≤

1.5

Appearance

Milk white chips

   


   Packaging&Storage:

       Packed in bags, 25kg net weight each.

       One year below 20°C and half a year below 30°C from the date of production.




 Polychloroprene Rubber CR322   


   Description:

     A sulfur and xanthogen mixed-modified chloroprene rubber with medium crystallization rate, the density is 1.23. It has good resistance to tear and flexure, superior processibility over sulfur-modified types and superior resistant properties to ozone, sunlight, weather, oil, grease and flame. It is similar to Du Pont’s Neoprene GW.


   Application:

    For making rubber products such as hoses, cable sheath, etc.


  Specification:

ITEM

INDEX

Mooney Viscosity

(ML100 ℃ 1 +4)

CR3221

CR3222

30-45

46-60

Mooney Scorch

(MSt 5 , min ) ≥

25

Tensile strength，MPa ≥

26

Modulus at 500％，MPa

1-5

Elongation at break, ％ ≥

800

Volatile matter，％ ≤

1.2

Ash content，％ ≤

1.2

   


   Packaging&Storage:

       Packed in bags, 25kg net weight each.

       Half a year below 25℃ in cool place from the date of production.




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