Chloroprene rubber is a polymer made from the monomer 2-chloro-1,3-butadiene.
Neoprene is an important variety of synthetic rubber, not only has excellent light resistance, aging resistance, flexural resistance, acid and alkali resistance, oil resistance and heat resistance, but also has good physical and mechanical properties; its comprehensive performance is incomparable to other synthetic rubber. It is widely used in national defense, transportation, construction, light industry and military industry. Neoprene is mainly used in the production of automotive parts, machinery and industrial products and adhesives.
Based on the abundant knowledge in polymer chlorination technology and extensive word-wide distribution channels, from 2015, Sundow stepped into chloroprene rubber business, a SURPREN™ brand is created for chloroprene rubber under the agreement between Sundow and its partner.
SURPREN™ technology is introduced from Nairit, Amenia; this technology was originated from DuPont Neoprene rubber.
And now SURPREN™ is exported to more than 15 countries such as USA, Russia, Brazil, Argentina, Korea, Germany, Italy, Spain, Australia, and India etc.
Table 1 The chloroprene rubber
(CR) used in general industrial rubber products
|Sundow SURPREN||Modifier||Crystallization||Mooney Viscosity, ML(1+4)100℃||Dupont,SDK Neoprene||Lanxess Baypren||Denka||TosohSkyprene||Main application|
|R22/R11||Mine conveyor belts, power transmission belts, hoses, seals, wire and cable jackets|
|SNR231||Mercaptan||Medium||34-41||W-M1||211||M-30||B31||Extruded bars, hoses, tapes, rubber seals, wire and cable jackets|
|SNR321||Four sulfide+ Sulfur||Medium||34-49||GW||510/611/711|
|Mine conveyor belts, power transmission belts, hoses, seals, cushions, wire and cable jackets.|
|SNR322||Four sulfide+ Sulfur||Medium||50-60||---||510/611/711|
|SNR323||Four sulfide+ Sulfur||Medium||60-70||---||---||---||---|
Table 2 The chloroprene rubber
(CR) used in adhesives
|Sundow SURPREN||Modifier||Crystallization||Brook field viscosity, mPa s (25℃, toluene solution)||Dupont,SDKNeoprene||LanxessBaypren||Denka||TosohSkyprene||Main application|
|5%solid content||10% solid content|
|SNR243||Mercaptan||Fast||54-75||AD30||330/340||A-100||G40T||Adhesive with higher tack.|
|Y30||Goods with highly loading, adhesive, conveyor belts, hoses, rubber seals, some hard goods.|
Hoses for high pressure and ultra-high pressure, medium pressure and low pressure
Oil and fuel hoses
Hoses for use in the petroleum industry
2. Cables and wires
Rubber-sheathed flexible cables
Flat flexible power and control cables
Flat flexible lighting cables
3. Conveyer and transmission belts
Powder transmission belts for the automotive and general industry
Conveyer belts with steel cord and textile reinforcement for industries
4. Molded parts
Bellows and dust caps Axle boots
Dampers and bearings
Windshield wiper blades
5. Sealing strips
Solid and microcellular rubber sealing strips
Expansion joint seals
Foam rubber sheet for wet suits