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NR (Natural rubber)

NR is a kind of natural polymer compound with polyisoprene as the main component, the molecular formula is (C5H8)n, 91%~94% of its composition is rubber hydrocarbon (polyisoprene), the rest is protein, fatty acid, ash, sugar and other non-rubber substances.

Supplier:Vietnam, Thailand, Laos

IR (Polyisoprene rubber)

IR for industrial use has the same main chain molecular structure as NR, and its physical parameters are basically the same. It can replace NR in whole or in part for rubber products such as tires, rubber hose tapes and rubber shoes.

Supplier:Sibur, Chinese local producer

IIR (Butyl rubber)

IIR has good chemical stability and thermal stability, the most prominent is air tightness and water tightness. Its permeability to air is only 1/7 of NR, 1/5 of SBR, and its permeability to steam is 1/200 of natural rubber and 1/140 of SBR.

Supplier:Sibur, Sundow

BR (Polybutadiene Rubber)

BR is the abbreviation of cis-1, 4-polybutadiene rubber, and its molecular formula is (C4H6)n. BR is a structured synthetic rubber made from butadiene polymerization, is the second biggest only to SBR.

Supplier:Sinopec, CNPC, Sibur, LG

SBR (Polymerized Styrene Butadiene Rubber)

The physical mechanism performance, processing performance and product performance of SBR are close to NR, some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed are better than NR, and can be used with NR and a variety of synthetic rubber, widely used in tires, tape, hose, wire and cable, medical equipment and various rubber products production fields.

Supplier:Sinopec, CNPC and Sibur

SBR (Polymerized Styrene Butadiene Rubber)

NBR (Butadiene–Acrylonitrile Rubber)

NBR is a copolymer of acrylonitrile and butadiene monomer, which is mainly produced by low temperature emulsion polymerization. It has excellent oil resistance and high wear resistance, heat resistance and strong adhesion, but the insulation performance is not ideal, and the elasticity is slightly lower.

Supplier:LG or Chinese local producer

EP(D)M (Ethylene Propylene (Diene) Monomer)

EP(D)M rubber is a synthetic rubber with ethylene and propylene as the main monomer, according to the different composition of monomers in the molecular chain, there are EPM and EPDM, the former is a copolymer of ethylene and propylene, expressed by EPM, the latter is a copolymer of ethylene, propylene and a small amount of non-conjugated diolefin third monomer, expressed by EPDM.

Supplier:CNPC, Kumho, Versalis/Eni

EP(D)M (Ethylene Propylene (Diene) Monomer)

SIS (Styrene-Isoprene - Styrene Block Copolymer)

SIS is a kind of styrene-isoprene styrene triblock copolymer, the appearance of white porous particles or translucent dense particles, has the characteristics of thermoplasticity, high elasticity, good melting flow, good compatibility with tackier resin, safety and non-toxic, can be used in hot melt pressure sensitive adhesive, solvent adhesive, flexible printing plate, plastic and asphalt modification fields.

Supplier:Sinopec, other Chinese producers

SIS (Styrene-Isoprene - Styrene Block Copolymer)

SBS/SEBS

The full name of SBS is styrene-butadiene-styrene block copolymer, and SEBS is a hydrogenated polymer of SBS.

Supplier:Sinopec, other Chinese producers

Rubber additives

As a manufacturer and trader of many synthetic rubbers, Sundow has partnerships with many rubber additive suppliers, so Sundow can provide high quality rubber additive products:

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