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POLYISOPRENE

POLYISOPRENE Structure
POLYISOPRENE structure
CAS No.
9003-31-0
Chemical Name:
POLYISOPRENE
Synonyms
IR;Natural rubber;NATSYN 2210;cis-1,4-Polyisoprene rubber;Isoprene rubber;POLYISOPRENE, CIS;Trans-polyisoprene;1,3-Butadiene, 2-methyl-, homopolymer;isoprened;Kraton[R]
CBNumber:
CB1382840
Molecular Formula:
C5H8
Molecular Weight:
68.12
MDL Number:
MFCD00084438
MOL File:
9003-31-0.mol
Last updated:2024-01-16 15:13:54
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POLYISOPRENE Properties

Melting point 64 °C
Boiling point 122-142 °C(lit.)
Density 0.92 g/mL at 25 °C
refractive index n20/D 1.521
Flash point >230 °F
storage temp. 2-8°C
form slab/chunk
CAS DataBase Reference 9003-31-0
Indirect Additives used in Food Contact Substances POLYISOPRENE
FDA 21 CFR 175.105; 177.1010; 177.2600
EWG's Food Scores 1
EPA Substance Registry System 1,3-Butadiene, 2-methyl-, homopolymer (9003-31-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS02,GHS07,GHS08
Signal word  Danger
Hazard statements  H226-H304-H312+H332-H315-H335-H360FD-H412
Precautionary statements  P210-P273-P280-P301+P310-P303+P361+P353-P331
Hazard Codes  T
Risk Statements  60-61-10-20/21-38
Safety Statements  24/25-7/9-45-36/37-16-53
RIDADR  UN 1307 3/PG 3
WGK Germany  3
RTECS  VL8020000

POLYISOPRENE price More Price(2)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 651796 Negative photoresist I 9003-31-0 100ml $180 2024-03-01 Buy
Sigma-Aldrich SAB4501556 Anti-IR antibody produced in rabbit affinity isolated antibody 9003-31-0 100μG $485 2023-01-07 Buy
Product number Packaging Price Buy
651796 100ml $180 Buy
SAB4501556 100μG $485 Buy

POLYISOPRENE Chemical Properties,Uses,Production

Description

Polyisoprene is the polymer known as natural rubber, although it can also be manufactured. The natural rubber latex is harvested from the rubber tree, Hevea brasiliensis. This substance has a variety of natural additives, such as proteins and sugars. The polymer from the natural latex is resistant to many solvents and also is easily processed. The synthetic form of this rubber is produced from a pure isoprene solution with a stereospecific isomer to produce the more commonly used cis-l,4 isomer. These rubbers are resistant to abrasion and most solvents and are commercially used in automobile tires, adhesives, and a variety of products that come in close contact with the general public. Their use in baby bottle nipples is a good indication of the extremely low toxicity associated with these elastomers.
Polyisoprene structure

Chemical Properties

Natural rubber is the name applied to the polymer cis-1,4-polyisoprene obtained chiefly from the 4590 RUBBER, NATURAL latex of the Hevea brasiliensis tree.

Chemical Properties

There are two main solvents for rubber: turpentine and naptha (petroleum). Because rubber does not dissolve easily, the material is finely divided by shredding prior to immersion. Natural rubber has been partially replaced by synthetics, particularly styrene–butadiene, as a generalpurpose rubber. High resilience, low heat buildup, and easy processing are particular advantages of natural rubber when it is often used in blends with synthetic polyisoprene and other elastomers. Natural rubber, alone and in combination with neoprene, has been rated highly for resistance to water, dimethyl sulfoxide, and some alcohols in a comparative test of glove materials; resistance to other solvents varied from good to poor. Polyisoprene supports combustion.

Uses

Natural rubber is a vital, strategic, and irreplaceable raw material used in enormous quantities by the commercial, medical, transportation, and defense industries. At least 40,000 different products and over 400 medical devices contain natural rubber.

Definition

The major component of natural rubber, also made synthetically. Forms are stereospecific cis-1,4and trans-1,4-polyisoprene.Both can be produced synthetically by the effect of heat and pressure on isoprene in the presence of stereospecific catalysts. Nat

Production Methods

The latex of natural rubber is obtained from trees (Hevea brasiliensis); the actual monomer is isopentenyl pyrophosphate that has been formed by biosynthesis. Natural rubber contains low-molecular-weight impurities; small amounts of sugar, fatty acids, proteins, and trace metals all play an important part in processing.
Depending on the catalyst, rubber may undergo 1,2-; 3,4-; or 1,4- additional polymerization that leads to several isomeric structures.
Almost all commercial synthetic polyisoprenes are prepared from purified isoprene monomer by a solution process. A stereospecific catalyst, such as an Al–Ti Ziegler type, is required for direct polymerization to the cis-1,4 isomer.
The production of the finished polymer requires two separate manufacturing processes: (a) formation of the rawpolymer and (b) conversion of the polymer to the finished rubber product. The first step is similar to that of plastic production. Large-scale operations use bulk materials in an enclosed system.

General Description

Available as part of Negative Photoresist kit 654892

Industrial uses

Rubber is characterized as being a highly elastic or resilient material, and the natural product is obtained mainly as a latex from cuts in the trunks of the Hevea brasiliensis tree. The latex consists of small particles (averaging about 2500 ? units in diameter) of rubber suspended in an aqueous medium (at about 35% solids content). The system also contains about 6 to 8% nonrubber constituents, some of which are emulsifiers, naturally occurring antioxidants, and proteins.
Natural rubber is used for making many types of articles. Because of its abrasion-resistant quality and low hysteresis in reinforced compounds, it is used in truck-tire tread stocks and in conveyor belts that which are employed in conveying abrasive material such as coal, crushed rock, ore, and cinders. In large tires, it has found application in carcass compounds because of the tack and building qualities of the raw polymer. It has also been used in carcass compounds because of the low heat buildup (low hysteresis) of the carcass compound vulcanizate during severe service conditions in tire usage.

POLYISOPRENE Preparation Products And Raw materials

Raw materials

Preparation Products

TIRE rubber products Chlorinated rubber Neoprene adhesive Double face pressure sensitive adhesive tape

POLYISOPRENE Suppliers

Global( 81)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21691 55
Hangzhou FandaChem Co.,Ltd. 		008657128800458; +8615858145714 fandachem@gmail.com China 9348 55
Chongqing Chemdad Co., Ltd 		+86-023-61398051 +8613650506873 sales@chemdad.com China 39916 58
career henan chemical co 		+86-0371-86658258 15093356674; factory@coreychem.com China 29826 58
Shaanxi Dideu Medichem Co. Ltd 		+86-029-81138252 +86-18789408387 1057@dideu.com China 3537 58
Shaanxi Dideu Medichem Co. Ltd 		+86-29-87569266 15319487004 1015@dideu.com China 2263 58
ANHUI WITOP BIOTECH CO., LTD 		+8615255079626 eric@witopchemical.com China 23556 58
Henan Alfa Chemical Co., Ltd 		+8618339805032 alfa4@alfachem.cn China 12755 58
Alfa Chemistry 		+1-5166625404 Info@alfa-chemistry.com United States 21317 58
Wuhan Godbullraw Chemical Co.,ltd 		+undefined18986288449 Alisasales@godbullraw.com China 560 58
Supplier Advantage
Henan Tianfu Chemical Co.,Ltd. 		55
Hangzhou FandaChem Co.,Ltd. 		55
Chongqing Chemdad Co., Ltd 		58
career henan chemical co 		58
Shaanxi Dideu Medichem Co. Ltd 		58
Shaanxi Dideu Medichem Co. Ltd 		58
ANHUI WITOP BIOTECH CO., LTD 		58
Henan Alfa Chemical Co., Ltd 		58
Alfa Chemistry 		58
Wuhan Godbullraw Chemical Co.,ltd 		58

Related articles

View Lastest Price from POLYISOPRENE manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
POLYISOPRENE pictures 2022-09-16 POLYISOPRENE
9003-31-0
 US $20.00 / kg 1kg 99% 5000 tons Hebei Duling International Trade Co. LTD
Polyisoprene pictures 2022-05-11 Polyisoprene
9003-31-0
 US $0.00 / g 10g 99.0% 10tons Wuhan Godbullraw Chemical Co.,ltd
Polyisoprene pictures 2022-05-10 Polyisoprene
9003-31-0
 US $0.00 / KG 0.01KG 99% 1 tons Wuhan Godbullraw Chemical Co.,ltd
  • POLYISOPRENE pictures
  • POLYISOPRENE
    9003-31-0
  • US $20.00 / kg
  • 99%
  • Hebei Duling International Trade Co. LTD
  • Polyisoprene pictures
  • Polyisoprene
    9003-31-0
  • US $0.00 / g
  • 99.0%
  • Wuhan Godbullraw Chemical Co.,ltd
  • Polyisoprene pictures
  • Polyisoprene
    9003-31-0
  • US $0.00 / KG
  • 99%
  • Wuhan Godbullraw Chemical Co.,ltd

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2-Methylbuta-1,3-diene, ol isoprene homopolymer Anti-IR, C-Terminal antibody produced in rabbit Anti-IR antibody produced in rabbit CD220 antigen kinase InsR 1,4-POLYISOPRENE 10'000 1,4-POLYISOPRENE 100'000 1,4-POLYISOPRENE 150'000 1,4-POLYISOPRENE 20'000 1,4-POLYISOPRENE 200'000 1,4-POLYISOPRENE 30'000 1,4-POLYISOPRENE 300'000 1,4-POLYISOPRENE 400'000 1,4-POLYISOPRENE 5'000 1,4-POLYISOPRENE 50'000 1,4-POLYISOPRENE 600'000 1,4-POLYISOPRENE 700 1,4-POLYISOPRENE 70'000 1,4-POLYISOPRENE 800'000 TRANS-ISOPRENE POLYMER CIS-ISOPRENE POLYMER 1,3-Butadiene,2-methyl-,homopolymer POLYISOPRENE, CIS, AVERAGE MW CA. 800,00 0 (GPC) 1,4-POLYISOPRENE STANDARD 2'000 1,4-POLYISOPRENE STANDARD 150'000 1,4-POLYISOPRENE STANDARD 20'000 1 4-POLYISOPRENE STANDARD 800'000 STAB. 1,4-POLYISOPRENE STANDARD 30'000 1,4-POLYISOPRENE STANDARD 5'000 1,4-POLYISOPRENE STANDARD 200'000 POLYISOPRENE, HYDROGENATED POLYISOPRENE, TRANS POLYISOPRENE POLY(ISOPRENE-1,4) POLYISOPRENE (1,4-ADDITION) POLY(PROPYLENE-ALT-ETHYLENE), MULTI-ARM NATSYN 2200 NATSYN 2205 1,4-polyisoprene standard 600000 Polyisoprenecissynthetic Polyisoprenetranssynthetic 3-butadiene,2-methyl-homopolymer betapreneh cis-1,4-polyisoprene[qr] isoprene,polymers isoprened isopreneoligomer isoprenepolymer NR(naturalrubber) poly(2-methyl-1,3-butadiene) poly-1-methylbutenylene[qr] Rubber (all-cis) trans-1,4-polyisoprene[qr] 1,4-POLYISOPRENE STANDARD 50'000 1 4-POLYISOPRENE STANDARD 300'000 STAB. 1,4-POLYISOPRENE STANDARD 70000, FOR GPC , STAB. 1,4-POLYISOPRENE STANDARD 8'000