Neoprene rubber latex

Figure 5. Weight change of neoprene rubber latex as a function of time following immersion in 1,1,1-trichloroethane...

Of the remaining materials in Table IV, only Viton, neoprene rubber latex,poly(vinyl alcohol), butyl rubber, and butyl-coated nylon exhibited at least a 20-min breakthrough time forl,2 dichloro-ethane permeation to occur. The nitrile rubber latex, cement dipped nitrile rubber, polyethylene (medium density), and surgical rubber latex were all penetrated by 1,2-dichloroethane in less than 3 min and would be of little use in situations requiring the garment to be in constant contact with 1,2-dichloroethane. From the above, butyl rubber or Viton appear to be the best materials to protect the worker against 1,2-dichloroethane, but because of apparent lot-to-lot variations(20) in butyl properties, Viton appears to be the best suited material of these studies to protect the worker from this chemical. 

SURGICAL RUBBER LATEX 0 BUTYL RUBBER NITRILE RUBBER LATEX NEOPRENE RUBBER LATEX... 

Because the viscosity of neoprene latex at a given solids content is less than that of natural rubber latex, thickeners are generally needed with the former. Methylcellulose and the water-soluble salts of poly(acrylic acid) are the two most commonly used thickeners. Natural and synthetic gums are also used. 

Because of their widespread use in the American workplace, butyl rubber, nitrile latex, neoprene latex, poly(vinyl alcohol), surgical rubber latex, and Viton elastomer were chosen for the present studies. The composite/bonded substances of this study were not in all cases presently available as commercial material for protective garments, but rather were chosen to determine their potential for resistance to solvent permeation. Likewise, Teflon gloves were included in these studies simply because they are commercially available. 

For the homogeneous, nonbonded materials evaluated in these studies (butyl rubber, neoprene latex, nitrile latex, polyethylene, polyvinyl alcohol), surgical rubber latex, and Viton elastomer), only the perlyVinyl alcohol) did not correlate well in this relationship. As has been shown in Fig. 6, most likely the polyethylene... 

The major emulsion processes include the copolymerization of styrene and butadiene to form SBR rubber, polymerization of chloroprene (Fig. t -4) to produce neoprene rubbers, and the synthesis of latex paints and adhesives based mainly on vinyl acetate and acrylic copolymers. The product is either used directly in emulsion form as a paint or else the surfactants used in the polymerization are left in the final, coagulated rubber product. 

Natural rubber is produced from a milky-white colloidal latex found in the rubber tree. It is a polymeric terpene with isoprene being the recurring polymeric unit. Polyisoprene rubber can also be produced synthetically by the addition polymerization of isoprene by 1,4-addition. Other synthetic rubbers include SBR (styrene-butadiene rubber), polybutadiene, and neoprene. Rubber is strengthened, hardened, and made more elastic by a process called vulcanization in which sulfur bridges form links within the polymeric chains. These links become strained when the rubber is stretched and when released the rubber assumes its original conformation. 

Neoprene is also available in a variety of forms. In addition to a neoprene latex that is similar to natural rubber latex, neoprene is produced in a "fluid" form as either a compounded latex dispersion or a solvent solution. Once these materials have solidified or cured, they have the same physical and chemical properties as the solid or cellular forms. 

Chemically resistant gloves are made from rubber (latex, nitrile, or butyl) or a synthetic composition such as neoprene. Frequently used gloves are ... 

Uses Flame retardant for plastics, rubbers, latex adhesives, neoprene, paints, fabric coatings, inks, carpet backings, paper coatings plasticizer, tackifier... 

Polymers Resins I Butyl Rubber, Epichlorohydrin Elastomers, Ethylene Propylene Rubber, Hypalon (TM) Production, Neoprene Production, Nitrile Butadiene Rubber, Polybutadiene Rubber, Polysulfide Rubber, Styrene-Butadiene Rubber Latex 07/31/97... 

Cellulose acetate natural rubber (latex), polyisobutylene rubber, neoprene rubber, polyvinyl acetate, ethylene vinyl acetate, polyacrylate (carboxylic), cyanoacrylate, polyamide (versamid), phenoxy, polyester + isocyanate, nitrile-phenolic, polyurethane, and resorcinol-formaldehyde. 

Synthetic elastomer latices include styrene butadiene, neoprene, and acrylonitrile butadiene. Neoprene latex is a water dispersion of neoprene rubber, and it has dispersed particles smaller than those of natural latex, giving better penetration in coating paper and textiles. Styrene butadiene latex with 68 percent solids is used for production of foamed rubber. 

Protective gloves, especially rubber gloves made of natural rubber latex or synthetic rubber (e.g., neoprene rubber), as well as rubber parts of respiratory masks used with certain industrial solvent-based paints should also be remembered as potential causes of sensitization in painters. Preservatives in barrier creams, hand ointments and hand cleansers are other potential causes of dermatitis (Mathias 1984 Estlander et al. 1994, i996a,b). 

Gloves made of rubber (latex, nitrile, or butyl), plastic, or synthetic rubber-like material (such as Neoprene) protect workers from bums, irritation, and dermatitis caused by contact with oils, greases, solvents, and other chemicals. The use of rubber gloves also reduces the risk of exposure to blood and other potentially infectious substances. 

Chemical Neoprene Natural Latex or Rubber Butyl Nitrile Latex... 

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