chloroprene


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Related to chloroprene: Polychloroprene

chloroprene

(klōr`əprēn') or

2-chloro-1,3-butadiene,

colorless liquid organic compound used in the synthesis of neoprene and certain other rubbersrubber,
any solid substance that upon vulcanization becomes elastic; the term includes natural rubber (caoutchouc) and synthetic rubber. The term elastomer is sometimes used to designate synthetic rubber only and is sometimes extended to include caoutchouc as well.
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. The structure of the chloroprene molecule is very similar to that of isoprene; the molecule contains two double bonds and is readily polymerized.

Chloroprene

 

CH2=CH—CCl=CH2. Chloroprene, also called 2-chloro-butadiene-1,3, is a colorless liquid with a pungent odor. Chloroprene has a boiling point of 59.4°C and a density of 0.9585 g/cm3 (at 20°C). It is insoluble in water but is soluble in most organic solvents. It attaches halogens and hydrogen halides through double bonds (usually, in the 1,4 position), participates in the diene synthesis reaction, and very readily undergoes polymerization (consequently it is stabilized by the addition of pyrogallol or pyrocatechol).

Chloroprene is produced by the hydrochlorination of vinyl acetylene at 0°–20°C in the presence of cuprous chloride, Cu2Cl2, and ammonium chloride. It is used in the production of chloroprene rubber. Chloroprene is toxic, and its maximum permissible concentration in the air is 0.002 mg/liter.

chloroprene

[′klȯr·ə‚prēn]
(organic chemistry)
C4H5Cl A colorless liquid which polymerizes to chloroprene resin. Also known as chlorobutadiene.
References in periodicals archive ?
[27], who studied the permeation of cytostatics (bleomycin, dacarbazine, daunorubicin, etoposide, etoposide phosphate, ifosfamide, idarubicin, irinotecan, mitomycin, mitoxantrone, oxaliplatin, teniposide, topotecan, and vinorelbine) through natural rubber latex and chloroprene rubber using HPLC with a ultraviolet-visible (UV-VIS) detector.
Denka, Mitsui and DuPont inked an agreement last December for the acquisition of DuPont's chloroprene rubber business.
Chloroprene rubber used is Neoprene AD with 98% of polymers and copolymers content, a product of Dupont Performance Elastomer, USA.
coal tar Catechol Propyleneimine Dichloromethane Chlordane Styrene Dioxin and dioxin- like compounds Chloroform Styrene oxide Epichlorohydrin Chloroprene Tetrachloroethylene Ethylene oxide Chromium and chromium Toluene-2.4- Formaldehyde compounds diisocyanate Cobalt and cobalt Toluenediisocyanate Hydrazine compounds Creosote.
In 2001 production capacities necessary for the production of chloroprene rubber were
The DuPont synthetic rubber has been referred to by many names including Duprene, Neoprene and Chloroprene. The DuPont synthetic rubber retained many of the advantageous features of natural rubber, while being superior in a number of ways.
The other fines were higher given the number of companies involved and the duration of the cartels: 519 million in November 2006 for synthetic rubber BR-ESBR particularly used in making tyres (see Europolitics 3200) and 243.2 million for chloroprene rubber (adhesives, diving equipment, condoms) in December 2007 (3428).
THE EUROPEAN COMMISSION in December imposed a total of $356 million in fines on Bayer, Denka, DuPont, Dow, ENI and Tosoh for participating in a cartel for chloroprene rubber in the European Union.
Neolon 2G gloves are made from an advanced proprietary neoprene (chloroprene) formulation, making them softer, more comfortable and more durable than traditional neoprene gloves.
Rubbers that are typically used include Styrene Butadiene Rubber (SBR), Acryloniltrile-Butadiene Rubber (NBR), Chloroprene (CR), Ethylene-Propylene Copolymers (EPM) and Ethylene-Propylene-Diene Terpolymer (EPDM).
Evaluation of Butadiene and Chloroprene Health Risks.