Synthetic rubber is a belong to the family of artificially- made polymer material which acts as an elastomer and has some rubber characteristics but differs in chemical structure and properties. An elastomer can undergo much more elastic deformation under stress than most materials returning to its original size without permanent deformation.
Synthetic rubber can serve as a substitute for natural rubber in many cases, especially when improved material properties are needed. They had good resistance to weather, sun, ozone & abrasions. Their versatility makes them useful in many applications requiring oil, weather or combination of these properties such as wire & cables, molded goods, soles & heels, adhesives & alike products.
Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber.
Chloroprene Rubber (CR), also known as chlorobutadiene rubber, is an important diene-based elastomer. The name Neoprene® is a registered trademark of DuPont Performance Elastomers.
Nitrile butadiene rubber (NBR) is a family of unsaturated copolymers of 2-propenenitrile and various butadiene monomers (1,2-butadiene and 1,3-butadiene). Although its physical.
Styrene butadiene rubber (SBR) is one of the cheaper synthetic general purpose elastomers that is sometimes used as a substitute for natural rubber (NR).
Polybutadiene (PBR) was one of the first types of synthetic elastomer, or rubber, to be invented. It didn't take a great a degree of imagination to come up with, as its very similar to natural rubber, polyisoprene.
Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" or polyisobutene, (C4H8)n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, but has two methyl groups substituted on every other carbon atom, rather than one. Polyisobutylene is a colorless to light yellow viscoelastic material. It is generally odorless and tasteless, though it may exhibit a slight characteristic odor.
Butyl rubber has excellent impermeability, and the long polyisobutylene segments of its polymer chains give it good flex properties.
A synthetic rubber, or elastomer, butyl rubber is impermeable to air and used in many applications requiring an airtight rubber. Polyisobutylene and butyl rubber are used in the manufacture of, agricultural chemicals, fiber optic compounds, ball bladders, O-rings, caulks and sealants, cling film, electrical fluids, lubricants (2 stroke engine oil), paper and pulp, personal care products, pigment concentrates, for rubber and polymer modification, for protecting and sealing certain equipment for use in areas where chemical weapons are present, as a gasoline/diesel fuel additive, and chewing gum. The first major application of butyl rubber was tire inner tubes. This remains an important segment of its market even today.
NIZHNEKAMSKNEFTEKHIM (BUTYL bk-1675n)
LANXESS (BUTYL 301)
EXXonMobil (BUTYL 268 / BROMO BUTYL 2255/2222 / CHLOROBUTYL 1068 / BROMO BUTYL 238)
Chloroprene Rubber (CR), also known as chlorobutadiene rubber, is an important diene-based elastomer. The name Neoprene® is a registered trademark of DuPont Performance Elastomers.The commercial grades are mostly trans-1,4-polychloroprene produced by free-radical emulsion polymerization of 2-chloro-1,3-butadiene. The chlorine in the polymer reduces the reactivity to many oxidizing agents.
Chloroprene rubber typically displays good resistance to ozone cracking, heat aging and to chemical attack. For example, it has good resistance to many chlorofluorocarbons, aliphatic hydrocarbons, mineral oils, greases and ozone, but only moderate or poor resistance to acids, solvents, and fuels. Its flame resistance is excellent. In fact, chloroprene is one of the few rubbers that are self-extinguishing. It also gives excellent rubber-to-metal bonds. However, chloroprene tends to harden over time and degrades in the presence of some fairly common chemicals such as hydrochloric acid, acetone, xylene, acetic acid, and hydrogen peroxide.
Its mechanical properties are generally inferior to those of natural rubber but it has superior chemical resistance.
TOSO-CSM is produced from polyethylene by chlorination and chlorosulphonation with chlorine and sulphur dioxide gas. Various types of TOSO-CSM are obtained according to degree of chlorination and chlorosulphonation as well as sort of polyethylene polymer. TOSO-CSM has excellent resistance against ozone, weather, oil and chemicals. And it can be colored in brilliant shades. TOSO-CSM is used for hoses of automobiles, gas and other industrial use, electric cable, rubber coatings, packings, gasket, rolls and lining, adhesives and bounding systems, etc. For goods of daily use, TOSO-CSM is used for life boats, life-jackets, windbreakers, raincoats, handrails of escalator and municipal gas hoses, etc.
TOSOH (SKYPRENE B-30/31/Y-30H/G-40S)
ARLANXEO (BAYPREN 100/110/210/320/310)
TOSOH (TS-530 (HYPALON))
Nitrile butadiene rubber (NBR) is a family of unsaturated copolymers of 2-propenenitrile and various butadiene monomers (1,2-butadiene and 1,3-butadiene). Although its physical and chemical properties vary depending on the polymer’s composition of nitrile, this form of synthetic rubber is unusual in being generally resistant to oil, fuel, and other chemicals (the more nitrile within the polymer, the higher the resistance to oils but the lower the flexibility of the material).
It is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks, since ordinary rubbers cannot be used. It is used in the nuclear industry to make protective gloves. NBR's ability to withstand a range of temperatures from −40 to 108 °C (−40 to 226 °F) makes it an ideal material for aeronautical applications. Nitrile butadiene is also used to create moulded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats.
Its resilience makes NBR a useful material for disposable lab, cleaning, and examination gloves. Nitrile rubber is more resistant than natural rubber to oils and acids, and has superior strength, but has inferior flexibility. Nitrile gloves are therefore more puncture-resistant than natural rubber gloves, especially if the latter are degraded by exposure to chemicals or ozone. Nitrile rubber is less likely to cause an allergic reaction than natural rubber.
KUMHO PETROCHEMICAL KUMHO KNB 35L /40M)
LG Chem LG 6240)
LANXESS PERBUNAN NT 3445/3965/2846)
JSR Corporation JSR 230SL / 220S / 220SH)
Styrene butadiene rubber (SBR) is one of the cheaper synthetic general purpose elastomers that is sometimes used as a substitute for natural rubber (NR). It can be produced by free-radical solution polymerization or by emulsion polymerizationeither warm at 30 to 60°C (hot rubber) or cold at temperatures near 0°C (cold rubber). Emulsion SBR (ESBR) continues to lose ground to solution SBR (SSBR) which is better suited for high-performance tires. Nevertheless, emulsion SBR grades still account for more than 75% of the total world capacity as of 2015. However, more and more SBR is produced by solution polymerization.
SBR is a highly random copolymer of butadiene and 10 to 25 percent styrene.
The addition of styrene lowers the price and contributes to the good wear and bonding properties. The addition of styrene also improves the strength, abrasion resistance, and blend properties of polybutadiene.
Styrene butadiene rubber (SBR) is the highest volume genral purpose synthetic rubber. It can be used in similar applications as NR / IR elastomers, except in severe dynamic application due to the inferior fatigue resistance. Typical applications include drive couplings, haul-off pads, conveyor belts, shoe soles and heels, adhesives, roll coverings and car tires (but not truck tires) and various other molded rubber goods. The typical working temperature range is -25°C to +100°C for static sealing.
KUMHO PETROCHEMICAL (SBR1502)
Polybutadiene (PBR) was one of the first types of synthetic elastomer, or rubber, to be invented. It didn't take a great a degree of imagination to come up with, as its very similar to natural rubber, polyisoprene. It's good for uses which require exposure to low temperatures. Tires treads are often made of polybutadiene copolymers. Belts, hoses, gaskets and other automobile parts are made from polybutadiene, because it stands up to cold temperatures better than other elastomers. Many polymers can become brittle at low temperatures thanks to a phenomenon called the glass transition. Driving in the winter can be bad enough with out hoses and gaskets going out on you! A hard rubber called poly(styrene-butadiene-styrene), or SBS rubber is a copolymercontaining polybutadiene.
SBR is a highly random copolymer of butadiene and 10 to 25 percent styrene.