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What does BR stand for?

BR stands for Butadiene Rubber (polybutadiene rubber)

This definition appears very frequently and is found in the following Acronym Finder categories:

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We have 50 other meanings of BR in our Acronym Attic

Samples in periodicals archive:

It seems paradoxical but cheap tyres made only of conventional types of rubber have simply become too expensive for cost and environmentally conscious consumers," said Joachim Grub, Head of the Lanxess Performance Butadiene Rubbers business unit.
Nitrile butadiene rubber (NBR) grades with acrylonitrile (ACN) content from 17% to 40% and viscosity from 35 to 120 Mooney units are available.
patent: 8,258,213 Issued: September 4, 2012 Inventors: Tatsuya Miyazaki Assigned: Sumitomo Rubber Industries Key statement: The present invention provides to a rubber composition for a breaker topping including 15 to 50 parts by weight of carbon black and 5 to 50 parts by weight of silica based on 100 parts by weight of a rubber component (provided that a butadiene rubber containing 1,2-syndiotactic poly-butadiene crystals is not included), including 10 to 45% by weight of a modified butadiene rubber and/or a modified styrene-butadiene rubber and 55 to 90% by weight of a natural rubber and/or an isoprene rubber for the purpose of improving low fuel cost while keeping rigidity, elongation at break and peel strength at a high level.