ABSTRACT
All references in this entry are to styrene-butadiene rubber (SBR), with a composition of approximately 25% styrene, 75% butadiene, unless “high impact polystyrene’ ‘ (containing 5 to 10% butadiene) is specified. Reference may also be made to the Part III entries: ASPHALT; and polyISOPRENE–polySTYRENE–BUTADIENE
