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 ?
With the closing of the deal, DPE has thus become the manager of chloroprene rubber-related operations that DuPont divested, including a part of production facilities at the Pontchartrain Works site in La Place, Louisiana, the United States, effective November 1, 2015.
Newly Developed Chloroprene Rubber Composites Based on Electron-modified Polytetrafluoroethylene Powder.
In 2001 production capacities necessary for the production of chloroprene rubber were
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.
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.
Each mount incorporates a thick chloroprene rubber base that is resistant to oil, water, and most chemicals, and all metal components are zinc-plated for rust protection and long life.
The SiYPro program is available for plants that produce ethylene, butadiene, styrene, acrylonitrile, acrylates, methacrylates, vinyl acetate, chloroprene, crude C4s, and pyrolysis gasoline.
However, a recent Finnish study reported that no surgical latex or chloroprene gloves were permeated by 2% glutaraldehyde for up to 4 hours (Ann.