Mimusops balata

Balata tree, Mimusops Balata, have achieved economic importance or are considered as resources for natural mbber as a renewable polymer. Chemically, natural rubbers are polyterpenes consisting of 1,4-c -(mbber) or 1,4-frans-(gutta-percha, balata) polyisoprene, generated by enzymatically catalyzed biosynthetic polymerization of isoprene, and stabilized by phospholipids. 

Balata. A gutta-percha-like tough, hard, poorly elastic polyisoprene (structure see under natural rubber) obtained from the resin-rich milk of wild-growing tropical trees (Mimusops balata, Sapotaceae) in Venezuela and Brazil. 

Balata a rubber-like polyterpene of low molecular mass from the latex of certain tropical trees, in particular from Mimusops balata. The double bonds of B. have trans configuration (see Polyterpenes, Fig.), and it is therefore not very elastic (in contrast to rubber). It softens when heated. 

The hard thermoplastic hydrocarbon obtained from the latex of Mimusops globosa. Balata has the same molecular formula as natural rubber (C5H8)n but has the tram polyisoprene structure whereas natural rubber has c/ s-structure. 

B-Zustand polym B-stage Backbiting Reaktion (intramolekulare Ubertragungsreaktion/ Ringschluss) backbiting reaction Backenbrecher jaw crusher, jaw breaker Bahn (endlos) web Bakelit bakelite Balata Mimusops bidentata=... 

Balata bo- lla -to [Sp, fr. Carib] (1860) (1) Dried juice of a West Indian tree Mimusops globosa). It has mbbery characteristics and is sometimes used as a substitute of gutta-percha. It resembles both this and ordinary mbber in that it consists of isoprene molecules (CsHg), but polymerized in its own particular way. Impure form of trans-polyisoprene. (2) Trans-1,4-PoIy (isoprene). (Langenheim JH (2003) Plant resins chemistry, evolution ecology and ethnobotany. Timber, Portland). 

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