DOW<DOW> RAISES STYRENE-BUTADIENE LATEX PRICES Dow Chemical Co said it increased prices by nine cts a pound (solids) for styrene-butadiene latex and plastic pigments, effective May One. Dow did not release the percentage increase. It said the increase will affect the floor covering markets, paper, paperboard and specialty markets. It said the increase is in addition to a previously announced seven cts a pound (solids) increase, effective March One.