POLYISOPRENE

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
EPA Substance Registry System	1,3-Butadiene, 2-methyl-, homopolymer (9003-31-0)

SAFETY

Risk and Safety Statements

Symbol(GHS)	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
TSCA	TSCA listed

POLYISOPRENE price More Price(2)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich(India)	SAB4501556	Anti-IR antibody produced in rabbit affinity isolated antibody	9003-31-0	100μG	₹50560.5	2022-06-14	Buy
Sigma-Aldrich(India)	651796	Negative photoresist I	9003-31-0	100ML	₹18048.6	2022-06-14	Buy

Product number	Packaging	Price	Buy
SAB4501556	100μG	₹50560.5	Buy
651796	100ML	₹18048.6	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

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.

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.

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

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( 88)Suppliers

Supplier	Tel	Country	ProdList	Advantage	Inquiry
K.L. Trading Corporation	08048372552Ext 222	Delhi, India	3	58	Inquiry
Madhavi Rubber Industries	08048607215	Ahmedabad, India	1	58	Inquiry
Yujiang Chemical (Shandong) Co.,Ltd.	+86-17736087130 +86-18633844644	China	969	58	Inquiry
Hebei Zhuanglai Chemical Trading Co.,Ltd	+8613343047651	China	3002	58	Inquiry
Hebei Shengyang Water Conservancy Engineering Co., Ltd.	+8615373025980	China	858	58	Inquiry
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	China	21675	55	Inquiry
Hangzhou FandaChem Co.,Ltd.	008657128800458; +8615858145714	China	9338	55	Inquiry
Chongqing Chemdad Co., Ltd	+86-023-6139-8061 +86-86-13650506873	China	39916	58	Inquiry
career henan chemical co	+86-0371-86658258 +8613203830695	China	29826	58	Inquiry
Shaanxi Dideu Medichem Co. Ltd	+86-029-81138252 +86-18789408387	China	2359	58	Inquiry

Supplier	Advantage
K.L. Trading Corporation	58
Madhavi Rubber Industries	58
Yujiang Chemical (Shandong) Co.,Ltd.	58
Hebei Zhuanglai Chemical Trading Co.,Ltd	58
Hebei Shengyang Water Conservancy Engineering Co., Ltd.	58
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

9003-31-0(POLYISOPRENE)Related Search:

POLYISOPRENE, CHLORINATED POLY(ISOPRENE), CIS, AVERAGE M.W. 800.000 POLYISOPRENE, TRANS, AVERAGE MW CA. 410, 000 (GPC) Isotretinoin Tris(2,4-pentanedionato)chroMiuM(III)

TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) 2,4-PENTANEDIONE, SILVER DERIVATIVE Benzyl isocyanide 1,1,3,3-TETRAMETHYLBUTYL ISOCYANIDE SALCOMINE

METHYL ISOCYANOACETATE DICHLORO(ETHYLENEDIAMINE)PLATINUM(II) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) COBALT(II) ACETYLACETONATE Aluminum acetylacetonate

Ethyl isocyanoacetate TERT-BUTYL ISOCYANIDE PHENYLSELENOL

chevron_left

1of4

chevron_right

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