polyisoprene


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polyisoprene

[¦päl·ē′īs·ə‚prēn]
(organic chemistry)
(C5H8)x The basis of natural rubber, balata, gutta-percha, and other rubberlike materials; can also be made synthetically; the stereospecific forms are cis-1,4- and trans-1,4-polyisoprene; the polymer is thermoplastic.
References in periodicals archive ?
The material system identified to be a Theologically 'matched' system, was the yellow butyl and polyisoprene system, while the 'mismatched' rheological system was yellow butyl and black butyl.
Finally, Kent Elastomer found Cariflex polyisoprene products, a synthetic polyisoprene latex from Kraton Performance Polymers (www.
With almost 10% of the American population afflicted with latex allergies, SKYN's non-latex polyisoprene formula avoids any natural rubber latex allergens that might cause adverse reactions with latex-sensitive users.
After removal of the solvent, the resulting polyisoprene was purified by reprecipitation from toluene with methanol three times (Fuller and Fulton 1990, Tangpakdee et al.
In analyzing the infrared results, our discussions will first center on the structure of the polyisoprene, and then the structural changes, as different grades of carbon blacks that are milled into the rubber, will be discussed.
SKYN condoms, made from ultra-soft polyisoprene, are said to be clinically proven to provide greater stimulation than polyurethane and natural rubber latex condoms.
Consequently, we were the first to launch a nonlatex, polyisoprene condom in the U.
5])4] but to obtain block polymers with the syndiotactic St-St sequences and cis-1,4 polybutadiene sequences and cis-1,4 polyisoprene sequences.
While polychloprene and polyisoprene gloves are available, some users find that these alternative choices in gloves don't always match the fine control or greater sensitivity to touch available with latex surgical gloves.
The Solution: Chemist developed a of self-lubricated polyisoprene materials that have been manufactured with a proprietary lubricant system and show a minimal reduction of physical and mechanical properties.
Polyisoprene blocks are inserted between the polystyrene and polybutadiene blocks for improved mechanical and thermal properties.
The specific product segments analyzed are Styrene Butadiene Rubber (SBR), Polybutadiene Rubber, Ethylene Propylene Rubber (Ethylene Propylene Diene Monomer or EPDM), Polychloroprene Rubber, Nitrile Rubber, Polyisoprene Rubber, and Others (Include Isoprene/Isobutylene Rubber (IIR) and Specialty Rubbers).