Abstract
The carpet mills work with their suppliers to optimize latex compounds for cost and performance. Most carpets produced are coated with carboxylated styrene butadiene rubber (SBR) latex. SBR is synthetic rubber produced by the copolymerization of about three parts butadiene and one part styrene. The widespread use of SBR is because of its cost effectiveness when compared to other latex types. With SBR, the sum of raw material cost, ease of compounding, processing feasibility, and quality of the finished products result in cost performance that other latex cannot match. In addition, SBR latex is strong and can be extended with large amount of minerals, typically calcium carbonate. There are other latex materials used in the carpet industry. These aqueous materials include polymers such as vinyl acetate ethylene (VAE), polyvinyldene chloride (PVDC), acrylic, and polyurethane. These polymers are designed for specific markets, and therefore information about them is scarce.
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