... or light yellow particles Trans-PolyIsopreneQuality Indexes of Trans-l,4-PolyIsoprene, TPIAppearance: White or light yellow particles Trans Content: Minimum 97% Volatile ... % Mooney Viscosity: 20~100 (Different from each model) Models of Trans-l,4-PolyIsoprene, TPITPI-I: Mooney viscosity maximum 20, low ... , used in materials for special purposes, oil-extended materials, etc. trans polyisoprene