Rubber Accelerators

Products

Chemical Composition

Appearance

Melting

Point °C

      Application Characteristics

MBT(M)

2-Mercapto-benzthiazol

Light yellow 

to grey powder

≥170

A semi-ultra, multi-purpose accelerator with a long plateau  effect. It provides vulcanizates with good physical properties. In sulphur-free compounds,  MBT acts as a scorch retarder, in CR compounds as a  retarder.

MBTS(DM)

Dibenzothiazyldisulphide

Light yellow 

to grey powder

≥166

A versatile semi-ultra accelerator with good processing  safety. It may be used alone or in conjunction with other accelerators. During the processing and vulcanization of CR compounds it has a retarding effect.

CBS(CZ)

N-cyclohexyl-2-benzothiazyl

sulphenamide

White  to grey powder

≥97

Comparing to   MBT and  MBTS, CBS has longer scorch safety and curing speed. Normally used in the tire, belts, hose, and other TRG articles.

TBBS(NS)

N-tert.-butyl-2-benzothiazyl

sulphenamide

White  to grey powder

≥104

TBBS compares to CBS, it has longer scorch time, more processing safety and faster curing speed. Suitable for  the tire, belts, hose, and other TRG articles.

CBBS

N-t-cyclohexyl-di-(2-benzothiazole) sulfenimide

White  to grey powder

≥120

CBBS show longer scorch safety, better antireversion curing, lower curing speed, higher modulus and lower HBU of NR and diene rubbers than the standard CBS. To replace DCBS for the tire steel cord  bonding compounds show excellent heat resistance and service durability. Suitable for tires, belts, hoses, and other TRG articles.

TBSI

N-t-butyl-di-(2-benzothiazole) sulfenimide

White  to grey powder

≥128

TBSI show longer scorch safety, better antireversion curing, lower curing speed, higher modulus and lower HBU of NR and diene rubbers than TBBS. TBSI can increase the heat stability and durability of bonding compounds of tire rubber to steel cord. The physical performance of vulcanizates is almost same with TBBS and DCBS. Suitable for the more thick section rubber products, e.g. TBR, OTR and GOTR tires.