Krishna Antioxidants Pvt. Ltd.

Degradation is a generic term used to describe any change in the rubber properties when compared to the initial desirable properties. Most synthetic rubbers are produced using controlled chain reactions to achieve molecules of desired properties. However, once the initial product is exposed to various physiological factors, chemical reactions start within the product and change its chemical and physical properties. The almost inevitable oxidation process starts a chain reaction, which speeds up the degradation unless a stabilizer is used.


Process Stabilizers

After polymerization most synthetic rubbers are shipped to manufacturers of the final rubber article. During processing, the rubber undergoes a series of heating cycles. Each such cycle causes degradation, a result of the combined action of heat and oxygen. Process stabilizers are used to prevent such degradation during processing.

Cristol-CPA 700 is a low-medium molecular weight cationic latex coagulant recommended for use in the manufacture of synthetic rubber such as SBR, NBR etc. It is very effective in emulsion breaking and production of white rubber from latex. It is useful in coagulation of particles and clarification. It is particularly useful in the production of white rubber because of its low colour.


Cristol-CPA 700 is recommended as an auxiliary coagulant along with Acid-salt coagulants during manufacture of Styrene Butadiene Rubber (SBR) etc. for maximum efficiency.


Cristol-CPA 700 when used in the manufacture of Synthetic rubbers gives the following benefits :

• Effective separation of polymer and aqueous layers.

• Replaces Brine.

• Improves clarity of aqueous layer/mother liquor.

• Effective coagulation and faster setting.

• Reduces fine loss.

Cristol-OTB is a very versatile basic accelerator of good process ability, especially suitable for cured goods without odour and taste. It is also well suited in combination with other accelerators.


Cristol-OTB is used alone or in combination with other accelerators for odourless and tasteless rubber goods particularly jar rings, bottle washers, hose for wine and beer, mechanical goods, fast cured repair sheets of good storage stability for inner tubes, curing cement, eraser stocks (with sulphur chloride factice, without addition of zinc oxide) etc., natural rubber and synthetic rubbers of the SBR types and the NBR types.